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3A01

ZnS(Ag)ࠍၮᧄⷐ⚛ߣߔࠆࡎࠬ࠙ࠖ࠶࠴ᬌ಴ེ߳ߩశቇᛛⴚߩㆡ↪
㧙ࠕࠢ࠴ࡁࠗ࠼߆ࠄߩ᡼኿✢ࠍหᤨ⸘᷹ߔࠆߚ߼ߦ㧙(ේሶജᯏ᭴) ż⥓↰㊀๺‫ޔ‬቟↰ஜ৻㇢‫ޔ‬᪉੗ ⡡㧝㧚ߪߓ߼ߦ
ࠕࠢ࠴ࡁࠗ࠼ߩ᜼േࠍ⺞ߴࠆߚ߼‫ޔ‬Į ✢ߣ ȕ(Ȗ)✢ߐࠄߦߪᾲਛᕈሶ(nth)෸߮ㅦਛᕈሶ(nf)ࠍᑯ
೎ߒߡหᤨߦ⸘᷹ߢ߈ࠆ ZnS(Ag)ࠍၮᧄⷐ⚛ߣߔࠆࡎࠬ࠙ࠖ࠶࠴ᬌ಴ེࠍ᭴▽ߒߡ߈ߚ 1-4)‫ޕ‬ߎߩࡎࠬ࠙ࠖ࠶࠴ߢߪ‫ߩࠇߙࠇߘޔ‬᡼኿✢ߦኻߒㆬᛯ⊛ߥᗵᐲࠍ᦭ߒ਌ߟᷫ⴮ᤨ㑆߇ㆡᒰߦ⇣ߥࠆⶄᢙߩࠪࡦ࠴࡟࡯࠲ࠍ⚵ߺวࠊߖߡ‫ޔ‬ᵄᒻ࡮ᵄ㜞ᑯ೎ᚻᴺࠍ㚟૶ߔࠆ‫ߩߎޕ‬㓙‫ޔ‬శቇࡈࠖ࡞࠲࡯ߥߤߩశቇᛛⴚࠍㆡ↪ߔࠇ߫‫ߦࠄߐޔ‬ఝࠇߚᑯ೎ߥߤߩᕈ⢻ᡷༀ߇ᦼᓙߢ߈ࠆ‫ޕ‬ᧄ⊒⴫ߢߪ‫ߜ┙ߩ࠲࡯࡟࠴ࡦࠪޔ‬਄߇ࠅᤨ㑆(RT)ߥߤߩ․ᕈࠍߢ߈ࠆߛߌห৻᧦ઙߢᢛℂߒ‫ޔ‬శቇࡈࠖ࡞࠲࡯ߩലᨐࠍਛᔃߦశቇᛛⴚࠍࡎࠬ࠙ࠖ࠶࠴ᬌ಴ེߦㆡ↪ߒߚᚑᨐࠍ߹ߣ߼ߚ‫ޕ‬㧞㧚ታ㛎ᣇᴺĮ ↪ߦߪ⊒శ㊂߇ᄙߊ RT ߩㆃ޿ ZnS(Ag)‫ޔ‬ȕ(Ȗ)෸߮ nf ↪ߦߪ RT ߩㅦ޿᦭ᯏࠪࡦ࠴࡟࡯࠲
(NE102A‫ޔ)ߤߥࡦ࠮࡜࠻ࡦࠕޔ‬Ȗ ෸߮ nth ↪ߦߪਛ㑆ߩ RT ࠍᜬߟήᯏࠪࡦ࠴࡟㧙࠲(NaI(Tl)ߥߤ)෸߮ 6Li ࠟ࡜ࠬ(NS8)ࠍ↪޿ߚ‫ޕ‬ZnS(Ag)߆ࠄߩⰯశߩㅘㆊ․ᕈࠍᄌ߃ࠆߚ߼‫ޔ‬ND(Neutral
density)‫࠻࠶ࠞࡊ࡯ࡖࠪޔ‬෸߮ࡃࡦ࠼ࡄࠬࡈࠖ࡞࠲࡯ࠍ↪޿ߚ‫ޕ‬Į‫ޔ‬ȕ(Ȗ)෸߮ਛᕈሶ⸘᷹↪ߦ‫ޔ‬244Cm‫ޔ‬137Cs‫ޔ‬252Cf ߥߤߩ✢Ḯࠍ૶↪ߒߚ‫ޕ‬㧟㧚⚿ᨐ෸߮⠨ኤઍ⴫⊛ߥࡎࠬ࠙ࠖ࠶࠴ߣߒߡ‫ޔ‬Į/ȕ(Ȗ)↪ߩ
ZnS(Ag)/NE102A‫ޔ‬Į/ȕ(Ȗ)/nf/nth ↪ߩ ZnS(Ag)/ࠕࡦ࠻࡜࠮ࡦ/NS8 ߥߤ߇޽ࠆ‫ޕ‬᭴ᚑߔࠆࠪࡦ࠴
࡟࡯࠲ߩ⊒శ㊂߇ᭂ┵ߦ⇣ߥࠆ႐วߪ‫ޔ‬ND ࡈࠖ࡞࠲࡯ࠍ೑↪ߒߡ‫⊒ޔ‬శ㊂߇ᦨ߽ᄙ޿ ZnS(Ag)߆ࠄߩⰯశㅘㆊ㊂ࠍᛥ߃ࠆߎߣߦࠃࠅ‫ޔ‬ኈᤃߦᵄ㜞ࠍ⺞ᢛߔࠆߎߣ߇ߢ߈ߚ‫৻ޕ‬ᣇ‫ࠪޔ‬ࡖ࡯ࡊࠞ࠶࠻෸߮ࡃࡦ࠼ࡄࠬࡈࠖ࡞࠲࡯ߩ RT߳ߩലᨐࠍ Fig.1 ߦ߹ߣ߼ߚ‫ޕ‬ᮮゲߩᵄ㐳ߪ‫ޔ‬ߘࠇߙࠇߩㅘㆊ㒢⇇( ਅ㒢୯ )෸߮ਛᔃᵄ㐳ࠍ␜ߔ‫ࠍ࡯࠲࡞ࠖࡈߩࠄࠇߎޕ‬೑↪ߔࠇ߫‫ޔ‬ZnS(Ag)ߩ RT ࠍ޽ࠆ⒟ᐲㆃߊ෶ߪㅦߊߔࠆߎߣ߇
น⢻ߥߩߢ‫ࠅࠃޔ‬ലᨐ⊛ߥᵄᒻᑯ೎߇ታ⃻ߢ߈ࠆ‫ޕ‬ZnS(Ag)ߦߪ‫ࠆߥ⇣ޔ‬ᵄ㐳㗔ၞߢᷫ⴮ᤨ
㑆ߩ⇣ߥࠆⶄᢙߩ⊒శᚑಽ߇ሽ࿷ߔࠆߚ߼‫ޔ‬RT ߩ೙ᓮ߇น⢻ߦߥߞߚߣᕁࠊࠇࠆ‫ࡎߩߎޕ‬ࠬ࠙ࠖ࠶࠴ߢߪ‫ޔ‬ZnS(Ag)એᄖߩࠪࡦ࠴࡟࡯࠲ Fig.1 Summary of the effects of sharp cut andߪశቇࡈࠖ࡞࠲࡯ߣߒߡ߽௛ߊ‫ ޔߪߢ⴫⊒ޕ‬band pass filters on the rise times of output
ߎࠇࠄࠪࡦ࠴࡟࡯࠲ߩㅘㆊ․ᕈ߿ઁߩశቇᛛ signals from ZnS(Ag) [The vertical error bars
indicate the FWHM of each rise time peak].
ⴚߩㆡ↪଀߽⚫੺ߔࠆ‫ޕ‬1)⥓↰, ╙ 39 ࿁᡼኿ൻቇ⸛⺰ળ੍Ⓜ㓸(ᣂẟᄢ, 1995 ᐕ 10 ᦬), p.327-328. 2)Usuda,S. Yasuda,Y.,
Sakurai,S., Appl. Radiat. Isot., 49, p.1131-1134 (1998). 3)idem, Nucl. Instr. Methods, A388, p.193198 (1997). 4)idem, J. Alloys and Compounds, 271-273, p.58-61 (1998).
Application of optical techniques to phoswich detectors composed of ZnS(Ag) for simultaneous
counting of radiations emitted from actinides
USUDA, S., YASUDA, K., SAKURAI, S.

3A02W£ql²À%/2çqðW&   l²&eġċdÖõßĈÈ¸É Öõß~}Ô tn¹·ĚCPI SÃp ĤĐý ę Ìþå ¦ø¨¿ rÿhQ Tª ±½
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À#'Ø$2tÓ% ¹zW£ql²ÀĥINAAĦ5ĕ×2#"ħĞÙ¸ÉÑđ&čĊf&eġ50%yT2#¬"2Ĩ INAA 'Tĉ&Q»¸ÉÈ À#'Ø$1ħÊÄq2#$ Ě"2#$mÎ" 2Ĩ$0 |j%
!' INAA %/2l²ó³&eġċd%! ¸ÉÑđĞÙ%º$È Và&ĆÎ0ċdb'$ "®ßæ"' ßæ«ĔĞÙ NMIJ CRM 8004-a çqðë­W& Cr Co 5 INAA " Ě & Ěf&Và5ċd2#5ÜÚ# * tÍW&WÐ©%2W°&Vđ.÷;F:@LÈ ©&aÚ_ø%/2(05ĒÇ2,% jĖ¸ÉÑđ#! Cs 5Č¥u)¼ē¸É%Åo2#-Č+ «ñÚ%03 INAA %/2 Cr Co

Ěf5Z& ÀĥID-ICPMS,

ICP-MS, ICP-OESĦ%/2l²ó³#¼ēĪĨĢ NMIJ CRM 8004-a çqðë­í 200 mg 5ÆÂ$¦èĠ÷ĄGK8>MNă%YĘi Cr Co &¼ē¸É' ßæî¾ ÉÑđĥCr,¸ÉÄ Co ¸ÉÄĦ5ė ÁÂ4ïĥADVANTEC No 5CĦ%lÀ%/1ËU!ďĄ jĖ¸ÉÑđ#!
' Merck áĄ Cs ICP standard 1000 mg/L Cs Certipur 5ė!× ďĄČ¥5¦®tnßæĞÙ¹·ßæ×tÍJRR-3 &Pn-1 -'JRR-4 &TB6E"3320lÐÞsÇ¬´ä5ÇĂ Ge s`µkz%/1÷;F:@L5È  Č¥u)¼ē¸É&È 'ą¤{Ā *Ĉ¤Ď%/2(05ĒÇ2,%51

Cr, 60Co é&DP:&97N@¤ 3 R0 6 R97N@ã%$2*"÷;F:@L5È īĨó³#ù Ò©Î"03ó³0 NMIJ CRM 8004-a çqðë­W& 10 g/g \U& Cr Co
5 INAA %/1¢Và#! 2 %ĥÝf k=2Ħ\U" Ěvú$#àč" * Cr, CoĚf'ÊÄq5^ql²ÀĥID-ICPMS, ICP-MS, ICP-OESĦ#üQû!2

#-àč"
Reliability evaluation of neutron activation analysis of Cr and Co in silicon nitride (NMIJ CRM 8001-a)
MIURA, T., KUROIWA, T., NONOSE, N.,HIOKI, A.,CHIBA, K., KAMIOKA, H., MATSUE, H.

3A03
3A03

᡼኿ൻಽᨆᴺࠍ↪޿ߚ㆙ᵗᕈᶏᵗၸⓍ‛⴫ጀߦ߅ߌࠆଏ⛎Ḯߩᬌ⸛(᧲ᄢ㒮✚ว1, ᧲ᄢᶏᵗ⎇2)٤ዊ⼺Ꮉൎ⷗1, ਭ㊁┨ੳ1, ૒㊁᦭ม2, ᧻የၮਯ1[ߪߓ߼ߦ] ᶏᵗၸⓍ‛ਛߦߪߐ߹ߑߥߥଏ⛎Ḯࠃࠅ߽ߚࠄߐࠇߚర⚛߇ᷙ࿷ߔࠆ‫ޕ‬ၸⓍ‛ߩ☸ᓘ೎ൻቇ⚵ᚑ߿ห૏૕⚵ᚑ߆ࠄଏ⛎Ḯࠍផቯߔࠆ⎇ⓥႎ๔ߪᄙᢙ⷗ฃߌࠄࠇࠆ߇‫࡯ࡠࡊޔ‬ࡉએᄖߩర⚛Ớᐲᄌേⷐ࿃ࠍ᣿ࠄ߆ߦߔࠆߎߣߪ㔍ߒ޿‫⎇ᧄޕ‬ⓥߢߪၸⓍ‛ਛߦ⇣ߥࠆଏ⛎
Ḯࠍᜬߟ႐ว‫ߩࠇߙࠇߘޔ‬ర⚛⚵ᚑࡄ࠲࡯ࡦ߇
0.2
SX21⇣ߥࠆߣ޿߁ⷰὐ߆ࠄ‫ޔ‬ၸⓍ‛ቯ㊂୯ߦᄙᄌ㊂
0.0⸃ᨆࠍㆡᔕߒ‫ߩߘޔ‬ଏ⛎Ḯಽ೎ࠍ⹜ߺߚ‫ޕ‬[ታ㛎] ᶏᵗၸⓍ‛ߪ⊕㡅ਣ((⁛)ᶏᵗ⎇ⓥ㐿⊒
-0.2
SX18
ᯏ ᭴ (JAMSTEC)) ߦ ࠃ ࠆ KH04-05 ⥶ ᶏ ߦ ߡ 0.3
2004-2005 ᐕ߆ߌߡ⷏⚻ 170 ᐲࠍ࠻࡜ࡦ࠮ࠢ࠻ 0.2
0.1ߦណขߒߚධᄢ⷏ᵗߩ㆙ᵗᕈࠦࠕ(4 ࠦࠕ)ࠍ↪ 0.0޿ߚ‫ޕ‬ၸⓍ‛ߪ㋦⋥ᣇะߦ 0.5-1.0cm ߦࠞ࠶࠻ -0.1
SX16ߒߚ߽ߩࠍ INAA(ᯏེਛᕈሶ᡼኿ൻಽᨆᴺ,
0.2
JRR-4) ߦ ട ߃ ߡ PGA( හ ⊒ ࠟ ࡦ ࡑ ✢ ಽ ᨆ ᴺ ,0.0
JRR-3)ߦࠃࠆᄙర⚛ಽᨆࠍⴕ޿‫ޔ‬29-36 ర⚛ߩ
-0.2
SX09
ቯ㊂୯ࠍᓧߚ‫ޕ‬ቯ㊂୯ࠍᄙᰴరࡌࠢ࠻࡞ߣߺߥ 0.2
ߒᄙᄌ㊂⸃ᨆ(ਥᚑಽಽᨆ)ࠍㆡᔕߒ‫ޔ‬ၸⓍ‛ਛ 0.1
0.0ߢߩర⚛Ớᐲᄌേ࿃ሶࠍ᛽಴ߒߚ‫ޔ߅ߥޕ‬ฦቯ -0.1
-0.2
㊂୯ߪ᷹ቯ⺋Ꮕߩട㊀ࠍ⠨ᘦߒߚ‫ޕ‬
SX09 IRD
Al[⚿ᨐ෸߮⠨ኤ] 㒽Ḯర⚛ߩ࿕᦭ࡌࠢ࠻࡞ࠍ࿃ 0.3
K
0.2
Rbሶ೎ߦFigureߦ␜ߔ‫ޕ‬ฦ࿃ሶߩነਈ₸ࠍTableߦ 0.1
Sc
0.0
Ti
᜼ߍߚ‫ޕ‬࿕᦭ࡌࠢ࠻࡞ߩࡄ࠲࡯ࡦߩ᜼േߩ㘃ૃ -0.1
ᕈ ߆ ࠄ ࿃ ሶ ࠍ Gr.1 [SX09 (factor1) ߣ SX18 -0.2
Factor 1
Factor 2
Factor 3(factor1)]ߣGr.2 [SX16 (factor1)ߣSX21 (factor2)]
Group 1 SX09(factor1) - SX18(factor1)
Group 2 SX16(factor1) - SX21(factor2)ߦಽ೎ߒߚ‫ߥ⚦⹦ޕ‬⠨ኤߩ⚿ᨐ‫ޔ‬Gr.1 ߪᄢ㒽⿠Ḯ⎕ድ‛(㘑ㅍႲ)ߢ޽ࠅ‫ޔ‬Gr.2 ߪἫጊጤ(₵ᱞጤ)
Figure Eigenvectors of terrigenous elementsߣផቯߒߚ‫ߦ․ޕ‬SX09 ߦ㑐ߒߡߪධᭂᄢ㒽⿠
of the South Pacific sediments and IRD.
Ḯߩṫᵹጤድ(IRD)ߩࡌࠢ࠻࡞ࡄ࠲࡯ࡦߣ㉃ૃ
ߔࠆߎߣ߆ࠄ‫ߩߘޔ‬ଏ⛎Ḯ߇ධᭂᄢ㒽ߢ޽ࠆߎߣ߇ᒝߊផቯߐࠇࠆ‫ߚ߹ޕ‬ၸⓍ‛ߩK/Ti, Euࠕࡁ࡯ࡑ࡝࡯(Eu/Eu*)ߩ᜼േ߆ࠄ߽ߎࠇࠄߩផቯࠍᡰᜬߔࠆߎߣ߇ߢ߈ࠆ‫ޕ‬
Table Sampling sites and factors loading from principal components analysis
Sample
SX09
SX16
SX18
SX21
o
o
o
43.18 S
39.99 S24.79o S
Location
65.18 S
174.08o W
171.17o W
170.00o W
169.98o W
Variance
Factor 1
26
54
49
28
Factor 2
20
26
9
22
/%
Factor 3
12
18
7
20
K/Ti
4.39
4.89
8.33
3.34
*
Eu/Eu
- 1.22r0.06 1.08r0.05 1.18r0.06
Estimation of the source of surface sediments in the pelagic sea by instrumental neutron
activation analysis
SHOZUGAWA, K., KUNO, A., SANO, Y., MATSUO, M.

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0.0
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[1] M. Arisaka, et al, Radiochim. Acta, 2002,

Fig. 1 1.00 M NaSCN + 0.10 M HClO4ÀËÆ090, 193

Ó

[2] T. Mori, et al, J. Radioanal. Nucl. Chem.,

Eu(III) ()Am(III) ()"ÕTiĆ

5GAIJNć¿ÅnÄ!*-2007, 272, 247-250
Separation of An(III) from Ln(III) using a capillary electrophoretic technique
MORI, T., ISHII, Y., HAYASHI, K., YANAGA, M., SATOH, I., SUGANUMA, H.

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ú°µj%ÿeøØ4-,$/0Ä2TìrÚCm 4ÿi¼"Ö28IDKLQï59?C6B$k

 Am

Á

KP>C6B4u+8IDKLQú°µj#/2eø4ÝÅwªÍ#2À'$á*#u)032%8IDKLÅ¡ô#eø4Ý¥Z4²$¥Z4À

Á

Cm $eø.ï59?C6B$k Á

4Â®#ÆÎ4Ý~Éþ

{ý$t]_$¹r»4À

,#k

Cm %ÿNGM«»U# Į _1$eø%½}$ª«»Ð¾#

þ AmÁå\èþ#êCm $ÿi¼eø#g)

-v2

Cm %¦lñÆ¶=P>Q/1äº3-$4`À{ýANQ:Q%¾Æ$ AVF :69OAOPñ$ªÈÇp#/1¿-$4`Àòf Į-hydroxyisobutyric acid (Į-HIBA) mhú|%+30.7 kVáb´

cm10s)4Àd 100 µm $EJQ<B;L78IDKLQ$cóÌj¸$ pH/& outlet ë$HPF·é4k2 AmÛ´(10#/1þ#ê¥Z4²$¥Z

Cm $eø4Ý

0.6

2ÃÁ"Ìj$#%3(!kà03pH ^(!æé#Ìj2$pH 4 3.0ā3.1 Xç#íî#/ãÑ8IDKLQó% 60cmHPF$·é% 1.48 ml / min  AmCm/& Cf $

ratio of all activitiesÓ¨ pH % 3ā4 $ô%{ý#

Am Cm
0.4

Cf
0.2

eø4Ý$þ$ú°µjz(Fig. 1)
4q#Ê$Ó¨Am

Cm

43

3cð$ 90%YT$eø#g)
$ú°µjÞÔ4Àhéx¿32ÅwªÍ#êÀ2

4á

0
4

4.5

5

time / minFig. 1 Electropherogram of Am, Cm and Cf*

Mutual separation of rare earths and the short-lived lanthanide using capillary electrophoresis
KURIBAYAHSI, T., OOE, K., OMOTO, T., FUJISAWA, H., KOMORI, Y, TAKAHASHI, N.,
YOSHIMURA, T., HABA, H., ENOMOTO, S., MITSUGASHIRA, T., SHINOHARA, A.

3A06
3A06

TG=Fs|¢¶i^Ve!)(Th  U Z UTEVA G2I,J8E62È¤(`l\) µ`RUlPv¹OwzÐ[³]
 TG=Fs|¢¶i^Ve!)(ThUZUTEVAG2IÈ¤*
¾ 1 )!Ì\M%(,DA.H@8/D;+*·  !)ÆTM À"&)FJ5IZ­k,DA*dÅ(jcÆ*[ (  ! ,J8E62*¤Ä?I<%'KoÆÅ(137AÈ¤*¾
Sample solution[qÓ](3 M HNO3 – 0.5 M Al(NO3)3)
 TG=Fs|¢¶i^V* (
UTEVA
"0I.EJ8(88Ô)FeO(12Ô)*<D4
3 M HNO3
Waste1100-150 m@¶ ¶i^V*  ¶
Packed column 3 M HNO32 mli^V*HF$HNO3HClO4*¤ËZ½
-0.1 M NH2OH-0.01 M C6H8O6Èps¬*]HNO3Á¿
Waste2orUTEVAG2I,DAUTEVAG2
3 M HNO3
Waste2UTEVA
I,J8E62(Eichrom«º2 ml)Fig.1 ª
0.1 M HNO3
50-100 m-0.01 M C2H2O4
3-JA *Åb¥ZTh
cartridge
Th, U
2
242
237
241
UICP-MS%' Pu Np AmSi_tVYf%'NaAlCaFeICP-AES
Waste1(Fe, Al, Na, Ca,%'oÍ
Np, (Pu), Am, Cm)[±] Åx,DA*¤¿^mZÑ*
Fig.1Scheme for the separation of Th and U
±90ÔSLThU ga¥Zga Am¯ 99ÔWaste1 Pu¯ 80Ô Waste2 YTh,Uga¥ZAmPu {YÏ¦SMNp¯ 89ÔWaste1 &Waste2 Y ¯ 1Ô Th,Uga¥ZY237Np238UÂÍ Ã |¢ONp {UT²&)("Uoy)²&)(!Å 3 Î °Q  ,DAÆTM ¼&)O 10 Î »(##,DA5B9EI/­*É (";E68 ( ;E68,DA¸¨£ Æ}Ò*N(Kh()(K,J8E62
G2I®~ u Çr"&)("5B9EI/Ê ¡ ;E68#¡K´§:-CJA>6.3*¤Å( Ä?I<*¤
UTEVAG2I,J8E62Å±89ÔTh 98ÔU ga¥Zga)
Na$AlCaFe&ZÑ)( *©À  Æ 100 ml/h(,DAjc 4Õ5 X)noW   
1 Asako Fujiwara, et al., J. Chromatography A, 1140 (2007) 163-167.
Application of UTEVA resin cartridge to separate Th and U in solidified products of
low-level radioactive waste
FUJIWARA, A., KAMEO, Y., NAKASHIMA, M.

         

3A07
3A07

FT-TIMS ಽᨆᴺߦ߅ߌࠆ TIMS ߦࠃࠆ⾰㊂ಽᨆᛛⴚߩ㐿⊒(ේሶജᯏ᭴) ٤੗ญ৻ᚑ ᧘⥌࿻ ㋈ᧁᄢテ દᄹᎹẢ ᳯဈᢥቁ 㑆ᨩᱜ᣿᪉੗⡡ ⥓↰㊀๺ ◉ේિᄦ ⚦⷗ᵏਯ ዊ㊁ኹ⾆ผ ⑔ጊ⵨ᐽ ᳯဈᧁߩታ
[✜⸒] ේሶജᯏ᭴ߢߪᧂ↳๔ߩේሶജᵴേᬌ⍮ߩߚ߼ߩ଻㓚ភ⟎ⅣႺ⹜ᢱಽᨆߩߚ߼ߩࠨ
ࡉࡒࠢࡠࡦࠨࠗ࠭ߩዊߐߥ☸ሶߩಽᨆࠍ߽ⷐ᳞ߐࠇࠆFT-TIMSಽᨆᴺߩ㐿⊒ࠍㅴ߼ߡ޿ࠆ‫ޕ‬FT-TIMSಽᨆᴺߢߪࡈࠖ࠶࡚ࠪࡦ࠻࡜࠶ࠢ(FT)ᴺߦࠃࠅⅣႺ⹜ᢱਛߩᩭ‛⾰฽᦭☸ሶࠍᬌ಴ߒߡ‫⴫ޔ‬㕙㔚㔌ဳ⾰㊂ಽᨆ⸘(TIMS)ߦࠃࠆ⾰㊂ಽᨆߦࠃࠅᩭ‛⾰ߩห૏૕Ყࠍ᳿ቯߔࠆ‫੹ޕ‬
࿁ߪFTᴺߢᬌ಴ߒߚห૏૕ᮡḰߩ࠙࡜ࡦ☸ሶߩ235U߅ࠃ߮238Uߩ᷹ቯߦട߃ߡේሶജᵴേߦ
ߟ޿ߡߩࠃࠅ⹦⚦ߥ⍮⷗ࠍᓧࠆߎߣߩߢ߈ࠆࡑࠗ࠽࡯ࠕࠗ࠰࠻࡯ࡊ234Uߣ236Uࠍ߽᷹ቯߒߚ‫ޕ‬߹ߚࠨࡉࡒࠢࡠࡦࠨࠗ࠭ߩዊߐߥ☸ሶߩห૏૕Ყߩ᳿ቯߦᚑഞߒߚ‫ޕ‬[ታ㛎] ࠙࡜ࡦ☸ሶߪห૏૕ᮡḰ‛⾰(ൻቇᒻ: U3O8)ߩỚ❗࠙࡜ࡦࠍ↪޿ߚ‫ޕ‬FT⹜ᢱߪๆᒁ
ᴺߦࠃࠅ⺞⵾ߒ[1]‫ޔ‬ේሶജᯏ᭴ߩJRR-4 ߢࡈ࡞ࠛࡦࠬ 81014 cm-2ߩᾲਛᕈሶᾖ኿ࠍⴕߞߚ‫ޕ‬☸ሶᬌ಴ߩߚ߼ߩࠛ࠶࠴ࡦࠣᤨ㑆ߪ 15 ಽߢⴕߞߚ‫ޕ‬TIMS᷹ቯߪThermo Fishier Scientifics
⵾ߩTRITONࠍ↪޿‫ࠣࡦࠖ࠹࡞ࡔࡦ࡯࠱ޔ‬ಣℂߒߚ࡟࠾࠙ࡓࡈࠖ࡜ࡔࡦ࠻ࠍ↪޿ߚ࠳ࡉ࡞ࡈ
ࠖ࡜ࡔࡦ࠻ᣇᑼߢⴕߞߚ‫ࡦࠝࠗޕ‬ൻࡈࠖ࡜ࡔࡦ࠻ߩ㔚ᵹ୯ࠍ⺞ᢛߒߚᓟ‫ࡦ࡚ࠪ࡯࡟ࡐࡃࠛޔ‬ࡈࠖ࡜ࡔࡦ࠻ߩ㔚ᵹ୯ࠍ਄ߍߡ࠙࡜ࡦࠗࠝࡦߩାภࠍ 2 ᰴ㔚ሶ୚Ⴧ▤(SEM)ߢᬌ಴ߒߡ᷹ቯ
ߦචಽߢ቟ቯߥାภᒝᐲࠍᓧߡห૏૕Ყ234U/238U‫ޔ‬235㨁/238㨁‫ޔ‬236U/238Uࠍ᳿ቯߒߚ‫ޕ‬[⚿ᨐ࡮⠨ኤ] ࿑ 1 ߦU350(35%Ớ❗࠙࡜ࡦ)☸
ሶߩ234㨁/238㨁ߩห૏૕Ყ᷹ቯ⚿ᨐࠍ␜ߒߚ‫ޕ‬࿑

0.0044ਛߦ᷹ቯਛߩାภᒝᐲࠍၮߦߒߡផቯߒߚ☸ሶ

0.0042ߩᄢ߈ߐࠍ␜ߒߚ‫ޕ‬ಽᨆ୯ߪ♖ᐲ 10㧑એౝߢ଻

0.0040ߦߟ޿ߡ߽ߘࠇߙࠇ♖ᐲ 1.6%એౝ‫ޔ‬8.8%એౝߢ
଻⸽୯ߦ৻⥌ߒߚ‫ߚߒ␜ߢߎߎޕ‬U350 ☸ሶߪᲧセ⊛ᄢ߈ߊ(1.5-2.7 Ǎm)Ớ❗ᐲ߽㜞޿߇‫ᧄޔ‬ᴺߦ
ࠃࠅࠨࡉࡒࠢࡠࡦࠨࠗ࠭ߩૐỚ❗ᐲߩU050(5%㩿㪉㪅㪊㪀

0.0038㩷㩷 U/238U

㩿㪉㪅㪎㪀

234

⸽୯ߦ৻⥌ߒߚ‫ޕ‬ห૏૕Ყ235U/238Uߣ236U/238U

㩿㪈㪅㪌㪀㩷㩷㩷㩷଻⸽୯

0.0036

㪇㪅㪇㪇㪇㪉㪐㪊㪐

0.00340.0032㩿㩷㪀䈲☸ሶ䈱ᄢ䈐䈘㪆㱘㫄

1

2
⹜ᢱ⇟ภ

3

Ớ❗࠙࡜ࡦ)ߩห૏૕Ყߩ᳿ቯߦᚑഞߒߡ޿ࠆ‫ޕ‬ߎࠇࠄߩ⚿ᨐߪᧄᴺ߇ᩭ‛⾰☸ሶߩห૏૕Ყ᳿ቯߦ᦭ലߢ޽ࠆߎߣ␜ߒ‫ޔ‬TIMSߦࠃࠅ☸ሶߩᄢ߈ߐࠍ߽⹏ଔߢ߈ࠆߎߣ߆ࠄ‫ޔ‬TIMSߦࠃࠅᓧߚᖱႎߣએ೨ߩႎ๔[2]ߩᩭ‛⾰ߩỚ❗ᐲ೎ಽ㔌ᛛⴚࠍ⚿߮ߟߌߡFT-TIMSಽᨆᴺߩ⢻ജ߇ะ਄ߔࠆߎߣ߇ࠊ߆ߞߚ‫ޕ‬1) C. G. Lee et al., Jpn. J. Appl. Phys., 45 (2006) L294-L296., 2) C. G. Lee et al., Jpn. J. Appl.
Phys., 45 (2006) L1121-L1123.
Development of mass analysis technique by TIMS for FT-TIMS method
IGUCHI, K., LEE, C. G., SUZUKI, D., INAGAWA, J., ESAKA, F., MAGARA, M., SAKURAI, S.,
USUDA, S., SHINOHARA, N., HOSOMI, H., ONODERA, T., HUKUYAMA, H., ESAKA, K.

3A08
3A08

塩酸溶液中でのテクネチウムの 3 級ピリジン樹脂への吸着挙動(1 東工大原子炉, 2 東北大工) ○鈴木達也 1、山後誠 1、藤井靖彦 1、
呉艶 2、三村均 2【序論】テクネチウムは原子炉内でウランの核分裂等により生成し、その同位体である 99Tc
は半減期 2.11×105 年の長半減期核種である。そのため、高レベル廃棄物中から除去することが望まれている。我々は、使用済燃料の再処理・核種分離技術として 3 級ピリジン樹脂を塩酸溶液系で用いるものを提案している[1]。3 級ピリジン樹脂は弱塩基性陰イオン交換樹脂の性質とソフトドナー配位子としての性質を持っており、テクネチウムの吸着挙動は興味深い。
そこで、テクネチウムの塩酸溶液中での 3 級ピリジン樹脂への吸着挙動を調べ、代替物質として使われるレニウムの吸着挙動と比較し、報告する。また、テクネチウム分析の観点からは軽白金族元素との分離が重要であるので、白金族元素の挙動も合わせて報告する。
【実験】テクネチウムの吸着挙動は、バッチ試験により行った。バイアル瓶に 240kBq のNH499TcO4 と塩酸溶液を混ぜ合わせ、全体の容積 1.1cm3 になるようにした。塩酸濃度は 0.1〜
9 mol/dm3 になるように調整した。この溶液から 0.1cm3 取り出し、テクネチウムの初期濃度(放射能)を確認した。残りの溶液に 0.1g の wet な 3 級ピリジン樹脂を加えて、1 時間ほど撹拌した後、樹脂と溶液が分離するのを待って、0.1cm3 溶液を取り出し、テクネチウムの測定を行った。測定には液体シンチレーションカウンターを用いた。レニウム及び軽白金族元素(Ru, Rh,
Pd)の吸着挙動の評価については、3 級ピリジン樹脂をカラムに充填して、溶離クロマトグラ
フィ実験により行った。濃度測定には ICP-MS を用いた。
【結果と考察】バッチ法で求めたテクネチウムの数の結果を図に示す。図を見るとテクネチウムは
高塩酸濃度でレニウムよりも高い分配係数を持つが、吸着挙動は比較的似た傾向を持ち、レニウ
ムはテクネチウムの模擬物質として十分に用いることが出来ると考えられる。図では示していな
いが、アンモニア水を加え pH 調製を行い、Distribution coefficient

分配係数とカラム法で用いたレニウムの分配係
10

3

10

2

10

1

Tc
Re

pH=8-10 の領域でテクネチウムの分配係数の評価も行った。その結果、分配係数は 1000 程度でほぼ一定になることが確認された。軽白金族元素については基本的に非常に強く吸着されるが、ル
テニウム、ロジウムについては 20%ほど吸着せずに漏出する成分があることを確認した。

10

–1

0

10
3
[HCl] / mol/dm

10

1Fig. Distribution coefficient of Tc(VII) andRe(VII) on tertiary pyridine resin inhydrochloric acid solution.

[1] S. Koyama et al., J. Nucl. Sci & Technol. 43(2006)681.
T. Suzuki et al., Progress in Nuclear Energy, in press. 等
Adsorption behavior of technetium on tertiary pyridine resin in hydrochloric acid solution
SUZUKI, T., SANGO, M., FUJII, Y., WU, Y., MIMURA, H.

ªáv$óĄ»!,/G;KE6T"ûsúgw  ûsG;KE6T(IV)JLÜ"Ï Äì 

3A09
3A09

(²tĆ«C 1 ²tāÍ 2) Āµ r 1,2Muhammad Zakir2
G;KE6T99 #uÁ° 21 _"´kéÏË 6%ĈÏ

É.´È­a!ý!ć´kéx/eÐÀ(´È­a"G;KE6T#ijÍĆZRYª¶É¾a!jk0/! /"þ°ÓÎ aÖç!Ā/ÕÚ"üê /h3ð&/)!þ~´Ø"

Òèä-#G;KE6Tåôþ°ÿ!2Ćáý!-0/3ãº"§í3n¨"ªákìÏ ÉG;KE6T"w3ð&"à³÷
G;KE6Tû57\(TcVIIO4-)ºă+ºßWA8Y!,/úg3yTcIVO2nH2 O >[5IćJLÜĂzdĈ!õ©0/3ëûsúgwss!üê



p3³",2WA8YwÛ!,/
WA8Yw#óĄ»Æ!

,*ò. /ªáÆ"z"¸!æ}¤0"óĄ»!,/G;
KE6T"ûsúgw! l)ð&±Òè#"à³! |/ï­# TcO4-ºÄ½,$ TcO2nH2O JLÜk¬ºÄ½3Ð00G;KE6

TÅ3 0.1 mM ×QX6T'#4Y?\9BMPX\<3ç 20"*
200 kHz (200 W)"óĄ»3ÆºÄ½"{xBS;HY3¯ÿ*!Ã
TcO4-57\úg0/·#ë-0
3Æ/Ü¼1 TcO2nH2O JLÜk¬ºÄ½

*! TcO 4-57\Ï4Y?\a# 30 k×-ýÓ! TcO4 57\!ûs0/2 óĄ»Æ!,.ºda#:UNG^@V\Ìñò/Äì
ÔÿÓ!Ă'.MPY3/¹dk

/"MPYâ0/ĆÂ]ĆÊÏ'0

ºk"kì!,. HOH WA8Y¡Ó!Ï /Tc(IV)"ûs#" OH WA8Y!,/ã -0OH WA8Y"¦¥o/ t-PDL^Y3¿q/ûs.¢-0'ºÄ½!Äì
\a!

/Ï

/¹d"Øą!,* TcO4−"Ï

ö#QX6Ta!

/ö"Þ 3 f

öÑ

.4Y?

ćè 1ĈOXF=áýî

3"Ý!Ð  OH WA8Y"Ï ö3ëÙ*/+#.4Y?\a"®QX6T
a,.* 0#`¹d"ÇbË"ù !ò/ã -0ÇbË"Ć

QX6T#MPY-d%"Ç£¬,.ö+!ò/)MPY"møÂc /º"kì#4Y?\a,.*ò.!Ï ö ã -0//)! OH WA8Y

è 1ĉóĄ»Æ!,/ TcVIIO4−"Ï öΟΗWA8Y"Ï ö¹d"ÇbË
Saturating
OH
Thermal conductivity,
TcVIIO4−
gas
formation ratemW m-1 K-1 (300K)
formation rate
-1-1
µM minµM min
He
3.30
11.6
156.7
Ar
10.1
28.1
17.90
Redox Reactions of Technetium by Radiolysis and Sonolysis: Formation and Dissolution of Tc(IV)Oxide Nanoparticles
SEKINE, T., ZAKIR, M.

᧲ㇱࠗࡦ࠼ᵗ෸߮ߘߩ๟ㄝᶏၞߦ߅ߌࠆ 241Am ߩᷓᐲಽᏓ

3B01
3B01


㧔㊄ᴛᄢ㒮⥄ὼ 1㊄ᴛᄢℂ 2㧕٤๺ᴰᜏᦶ 1㧘᳗ጟ⟤૫ 2㧘ᮮጊ᣿ᒾ 1㧘ਛ⷏ ቁ 1‫ ޤߦ߼ߓߪޣ‬ᄢ᳇࿤ౝᩭታ㛎ߦ઻ߞߡ᡼಴ߐࠇߚੱᎿ᡼኿ᕈᩭ⒳߇ᶏ᳓ਛ߆ࠄᶏᐩၸⓍ‛߳ߣ㒰෰ߐࠇࠆㆊ⒟ߩ࿾⃿ൻቇ⊛ࡔࠞ࠾࠭ࡓߣᤨ㑆ࠬࠤ࡯࡞ߦ㑐ߔࠆ⎇ⓥ߇ᄙᢙⴕࠊࠇߡ߈
ߡ޿ࠆ߇㧘 ⇟ర⚛ࠕࡔ࡝ࠪ࠙ࡓ Am ߦߟ޿ߡߪ㧘ᶏ᳓ਛỚᐲ߇ૐ޿ߚ߼ߦ㧘⎇ⓥ߇޽߹
ࠅㅴࠎߢ޿ߥ޿‫ޕ‬ᩭታ㛎ߦ↱᧪ߔࠆ Am ห૏૕ߪ 241Am ඨᷫᦼ ᐕ㧘ǩ ᡼኿૕ ߢ޽ࠅ㧘
241
Pu ඨᷫᦼ ᐕ ߩ Ǫუᄌߦࠃߞߡ↢ᚑߔࠆ‫⎇ᧄޕ‬ⓥߢߪ㧘 ᐕ㨪 ᐕߦ᧲ㇱࠗࡦ࠼ᵗ෸߮ߘߩ๟ㄝᶏၞߢᷓᐲ೎ߦណขߐࠇߚᶏ᳓ߦߟ޿ߡ 241Am ߩಽᨆࠍⴕߞߚ‫ޕ‬‫ޣ‬ታ 㛎‫᧲ ޤ‬ᄢᶏᵗ⎇⊕㡅ਣߩ -*㧙㧙 ᰴ⎇ⓥ⥶ᶏߦ߅޿ߡᷓᐲ೎ߩᄢ㊂ណ᳓㧔㧝⹜ᢱ⚂ .㧕߇ⴕࠊࠇ㧘⦁਄ߢ 242Pu㧘243Am ߥߤߩᣢ⍮㊂ࠍ࠻࡟࡯ࠨߣߒߡᷝടᓟ㧘㋕౒ᴉ߇ⴕࠊࠇߚ‫ߩߘޕ‬᳓㉄ൻ‛ᴉᲚ߆ࠄ߹ߕ Pu ߇ಽ㔌ߐࠇ㧔᡼ක⎇㧕㧘ߘߩᓟ㧘ᧄ⎇ⓥߦ߅޿ߡ Amࡈ࡜࡚ࠢࠪࡦߩ♖⵾ࠍⴕߞߚ߇㧘243Am ࠻࡟࡯ࠨߩǩ✢ࡇ࡯ࠢߣ㒰෰ߒಾࠇߥ޿ 210Po ߩǩ✢ࡇ࡯ࠢ߇㊀ߥߞߡ 241Am ߩቯ㊂ࠍ⺋ࠄߖࠆߩߢ㧘♖⵾ߒߚ Am ࡈ࡜࡚ࠢࠪࡦߦ 209Po ߩᣢ⍮㊂ࠍᷝടߒߡ Po ࠍ㌁᧼ߦᨆ಴ߐߖߚᓟߩṁᶧ߆ࠄ Am ߩ㔚⌕ࠍⴕߞߚ‫ ⵾♖ޕ‬Am ߩ㔚⌕✢ḮߣPo ࠍᨆ಴ߐߖߚ㌁᧼ࠍ ǩ ✢ࠬࡍࠢ࠻ࡠࡔ࡯࠲ߢ᷹ቯߒ㧘Po ✢Ḯߩ 210Po209Po ⸘ᢙ₸Ყߣ Am✢Ḯߩ 209Po ⸘ᢙ୯ߦၮߠ޿ߡ 243Am ࡇ࡯ࠢ߳ߩ 210Po ߩነਈࠍ⵬ᱜᓟ㧘241Am243Am ⸘ᢙ₸Ყ
ߣᷝട 243Am ㊂߆ࠄ 241Am ㊂ࠍ᳞߼ߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫⃻ ޤ‬࿷߹ߢߦᓧࠄࠇߚ⚿ᨐࠍ (KI ߦ␜ߔ‫ޕ‬ᶏ᳓ਛߩ 241Am Ớᐲ߇ૐ޿਄ߦ
Am ߩൻቇ෼₸߇㜞ߊߥ޿ߩߢ㒝Ꮺ⺋Ꮕ߇ᄢ߈޿⚿ᨐߣߥߞߡ޿ࠆ‫ޕ‬241Am ỚᐲߩᷓᐲಽᏓࠍ

2W ỚᐲߩᷓᐲಽᏓߣᲧセߔࠆߣߣ߽ߦᶏၞ㑆ߢᲧセߒߚ⚿ᨐ㧘ᶏၞߦࠃߞߡ Am ߩᴉ㒠᜼േ߇⇣ߥࠆߎߣ߇ಽ߆ߞߚ‫ޕ‬241Am ߩᷓᐲಽᏓߪ㧘241Am ࠍᜂߞߡ޿ࠆᴉ㒠☸ሶߩࡈ࡜࠶ࠢ
ࠬߣ⒳㘃ߩ㆑޿ࠍਥߦ෻ᤋߒߡᶏၞߦࠃߞߡ⇣ߥࠆ߽ߩߣ⠨߃ࠄࠇࠆ‫ޕ‬(a)             (b)
(c)
241







241

Am P$ S . 㧙 






















&GRVJO&GRVJO&GRVJO

241

Am  P$ S . ́ Am  P$ S . ́ 



















Fig. 1
Depth distribution of 241Am in water columns: (a) 8°50’N, 121°48’E (Sulu Sea), (b)29°59’S, 110°00’E (Perth Basin), (c) 40°01’S, 110°00’E (Southeast Indian Ridge).

Depth distribution of 241Am in water columns of the Eastern Indian Ocean and its
adjacent seas
IZUMI, T., NAGAOKA, M., YOKOYAMA, A., NAKANISHI, T.

3B02
3B02

Colloid Transport of Plutonium in the Far-Field of the Mayak
Production Association, Russia(஑኱㝔⌮) ‫ۑ‬S. Utsunomiya, A. P. Novikov, S. N. Kalmykov, R. C. Ewing,
F. Horreard, A. Merkulov, S. B. Clark, V. V. Tkachev, B. F. Myasoedov.

Sorption of actinides, particularly plutonium, onto submicrometer-sized colloids increases
their mobility, but these plutonium colloids are difficult to detect in the far-field. We identified
actinides on colloids in the groundwater from the Mayak Production Association, Urals, Russia; at thesource, the plutonium activity is ~1000 becquerels per liter. Plutonium activities are still 0.16
becquerels per liter at a distance of 3 kilometers, where 70 to 90 mole percent of the plutonium issorbed onto colloids, confirming that colloids are responsible for the long-distance transport ofplutonium. Nano–secondary ion mass spectrometry elemental maps reveal that amorphous iron oxide
colloids adsorb Pu(IV) hydroxides or carbonates along with uranium carbonates.
Figure 1. Direct evidence of
Pu adsorption onto
amorphous Fe hydroxide.
(A) Scanning electron
micrograph of typicalcolloids from well 1/69.
Many spherical particles
were observed with a size of<1 mm. (B) High-angle
annular dark-field scanningtransmission electron
microscopy image of thespherical colloids. Electron
diffraction patterns fromthese particles indicate thatthey are amorphous. (C) Energy dispersive x-ray spectrum from the spherical particles shows that Fe
is a major constituent associated with trace amounts of Si and Ca. a.u., arbitrary units. (D) Nano-SIMS
elemental maps.
Colloid Transport of Plutonium in the Far-Field of the Mayak Production Association, Russia.
UTUNOMIYA, S., NOVIKOV, A.P., KALMYKOV, S.N., EWING, R.C., HORREARD, F., MERKULOV,A., CLARK, S.B., TKACHEV, V.V., MYASOEDOV, B.F.

3B03
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239
;2? KÁbPR Pu %m,  W!Ä *ÑV
<C:;2?/ º~p[lW)+W×´À~Ûz ICP-MS /©
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6(Aoyama and Hirose, 2004)Ö&*-9G7/Ã© 
3. ¸
 ^jxL£w5A10(32.5qS, 177.7qW-149.8qW) 5 ¢  239Pu z Ò­Wv/&,  239Pu z!¿Ù z Qµ 1mBq m-3 239Pu
z!zVgX600m * 800m ii z!µ 5 mBq m-3  ~239Pu z!q1500m !µ 1.5 mBq m-3 +* gi
'i  zhY!± \jxÉ,^jx <C:;2?
Ò­Wv! 600m-800m ir }-,³ÚO/± W $^\jxV Pu/137Cs !¿Ù *µ 1000m z$VÔ¬gi, Å·%,¿r!^jx 239,240Pu z!\jxb²z ((QU, o<C:;2?irN !^\Ó
zt gi
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& Pu 1F=F:BGÜ0-2300mÝ/& ¸),\jx 239,240Pu
1F=F:BG!^jx#HNIÛ a» , W 

Behavior of plutonium in seawaters of the North and South Pacific Ocean.
HIROSE, K., AOYAMA, M., KIM, C.S., YIM, S.A.

3B05
3B05

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®ÊąM. Yamamoto, T. Tsukatani, Y. Katayama, Health Phys. 71:142-148; 1996.
Residual induced radioisotopes in the soil of the Semipalatinsk nuclear test site in the former USSR
KOJIMA, S., ARINOBU, T., SAITO, T., YAMAMOTO, Y.

3B06
3B06

ⅣႺ᡼኿⢻ߩࠠࡁࠦ߳ߩ᜼േߦߟ޿ߡ
⍹Ꮉ⋵଻ஜⅣႺ࠮ࡦ࠲࡯  ٤ዊᶆ೑ᒄ‫ޔ‬Ꮉ⇌ବਯ‫ޔ‬ਛ⼱శ‫ ޔ‬              ศᧄ㜞ᔒ‫ޔ‬ਛጊືᒾ

‫ޤ⊛⋡ޣ‬ㆊ෰ߦᣣᏱ㘩ਛߩ᡼኿⢻⺞ᩏ㧝㧕ࠍታᣉߒߚਛߢ‫ޔ‬㘩᧚ߦࠠࡁࠦ߇฽߹ࠇߚ႐วߦ‫ޔ‬%U Ớᐲ߇㜞޿௑ะ߇ߺࠄࠇߚ‫ޔ߼ߚߩߎޕ‬ⅣႺ᡼኿⢻ߩࠠࡁࠦ߳ߩ᜼േࠍ⍹Ꮉ⋵৾የᏒߩጊᨋߢណขߒߚ⥄↢ࠠࡁࠦ㧔ࠕࠞࡕࡒ࠲ࠤ‫  ోޔઁࠤ࠲ࠬ࠙ޔ‬⒳㧕ߦߟ޿ߡ⺞ᩏߒߚ‫ࠠޕ‬ࡁࠦਛߩ᡼኿⢻ߦ㑐ߒߡߪ‫ޔ‬૕ౝⵍ߫ߊ✢㊂⹏ଔߩⷰὐ߆ࠄߘߩỚ❗ᕈ߇⌕⋡ߐࠇߡ޿ࠆߣ
ߎࠈߢ޽ࠅ‫ޔ‬ේሶജᣉ⸳߿੹ᓟߩᩭታ㛎߆ࠄ᡼಴߇੍ᗐߐࠇࠆᩭ⒳ߩ᜼േߦ㑐ߒߡ੍ኤ⊛ᬌ⸛ࠍⴕ߁ᔅⷐ߇޽ࠆ‫ߩߘޕ‬ၮ␆⾗ᢱࠍᓧࠆߚ߼‫ޔࠦࡁࠠޔ‬ኋᧁ‫ޔ‬࿯ფߦ฽߹ࠇࠆ᡼኿⢻෸߮቟ቯห૏ర⚛ߦߟ޿ߡ‫ޔ‬ర⚛㑆ߩⷫ๺ᕈ߿⒖ⴕߦߟ޿ߡ⺞ᩏߒߡ޿ࠆ‫ޕ‬ ੹࿁‫ࠦࡁࠠ↢⥄ޔ‬ਛߦߪ‫ޔ‬%U ߇㜞޿Ớᐲߢ฽߹ࠇࠆߎߣ‫ޔ‬਄ㇱ㧔ࠞࠨ㧕ߦỚ❗ߐࠇࠆߎߣ‫ޔ‬㜞޿⒖ⴕଥᢙࠍ␜ߔߎߣ‫ޔ‬4D ߣߩ㑆ߦ⋧㑐߇޽ࠆߎߣߥߤ߇⏕⹺ߐࠇߚߩߢႎ๔ߔࠆ‫ޕ‬‫ޣ‬ᣇᴺ‫ޔߪࠦࡁࠠޤ‬᳓ᵞߒߡ࿯ფ߿⪭⪲ࠍขࠅ㒰޿ߚᓟ‫ⵙߊ߆⚦ޔ‬ᢿߒ‫ޕߚߒ῎ੇޔ‬᡼኿ᕈ
ᩭ⒳ߩ᷹ቯߪ‫ࡓ࠙࠾ࡑ࡞ࠥޔ‬ඨዉ૕ᬌ಴ེઃ߈ᩭ⒳ಽᨆⵝ⟎ߦߡⴕߞߚ‫ޕ‬቟ቯห૏ర⚛ߩ᷹ቯߪ‫ߣ㉄⎣ޔ‬ㆊ㉄ൻ᳓⚛᳓ࠍ↪޿ߡ᦭ᯏ‛ࠍಽ⸃ߒߚᓟ‫ޔ‬+%2/5 ߦߡⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬᡼኿⢻ߩ᷹ቯ⚿ᨐ߆ࠄ‫ࠦࡁࠠ↢⥄ޔ‬ਛߩ %U ߪ‫ᦨޔ‬ᄢߢ $SMI ੇ῎㧔࠙ࠬ࠲ࠤ㧕ߢ޽ࠅ‫ᦨޔ‬ዊߪ 0&ߢ޽ࠅ‫ޔ‬ᄢ߈ߥᏅࠍ␜ߒߚ߇‫ޔ‬- ߪ‫ޔ‬ห╬ߢ޽ߞߚ‫ߎޕ‬ߩߎߣ߆ࠄ‫ޔ‬- ߦߪࠠࡁࠦߩ⒳㘃߿↢⢒ⅣႺߦࠃࠆỚᐲᏅߪߥ޿߇‫ޔ‬หߓࠕ࡞ࠞ࡝㊄ዻߩ%U ߦߪᄢ߈ߥỚᐲᏅ߇޽ࠆߎߣࠍ⏕⹺ߒߚ‫ޕ‬ ㇱ૏೎ߩỚᐲࠍᲧセߔࠆߣ‫ޔ‬- ߩ਄ㇱߣਅㇱ㧔ࠞࠨߣࠫࠢ㧕ߩᲧߪ 㨪 ߣߥࠅ‫ޔ‬ᄢ߈ߥᏅ߇ߥ߆ߞߚߩߦኻߒ‫ޔ‬%U ߢߪ‫ޔ‬㨪 ߢ޽ࠅ‫ޔ‬Ꮕ߇ᄢ߈ߊ‫ߩߡోޔ‬⒳㘃ߢ ࠍ⿥߃ߡ߅ࠅ‫ޔ‬਄ㇱ㧔ࠞࠨ㧕ߦ⫾Ⓧߐࠇࠆ௑ะ߇⷗ࠄࠇߚ‫ޕ‬ ၮ⾰߆ࠄߩ⒖ⴕߦߟ޿ߡߪ‫ߩࠦࡁࠠޔ‬⒳㘃Ფߩ↢⢒ᒻᘒߦࠃߞߡ࿯ფ߆ࠄߩ⒖ⴕߣኋᧁ߆
ࠄߩ⒖ⴕߦ඙೎ߒߡ⸃ᨆࠍⴕߞߚ‫ޕ‬࿯ფ߆ࠄߩ - ߩ⒖ⴕଥᢙߪ‫ޔ‬㨪‫ޔ‬ኋᧁ߆ࠄߩ⒖ⴕଥᢙߪ‫ޔ‬㨪 ߢ޽ࠅ‫ޔ‬- ߪ⒖ⴕߒᤃ޿ߎߣ߇⏕⹺ߐࠇߚ‫ޕ‬࿯ფ߆ࠄߩ %U ߩ⒖ⴕ
ଥᢙߪ‫ޔ‬㨪‫ޔ‬ኋᧁ߆ࠄߩ⒖ⴕଥᢙߪ‫ޔ‬㨪 ߢ޽ࠅ‫ߩࠦࡁࠠޔ‬⒳㘃ߦࠃࠅߘߩ⒖
ⴕߩ⒟ᐲߦᄢ߈ߥᏅ߇޽ࠆߎߣ߇⏕⹺ߐࠇ‫ ߢࠤ࠲ࠬ࠙ߦ․ޔ‬㨪‫ ߢࠤ࠲࠾ࡌ࡜࠙ࠨࠢޔ‬㨪 ߣᄢ߈ߥ୯ࠍ␜ߒߚ‫ޕ‬ ቟ቯห૏ర⚛ߩ᷹ቯ⚿ᨐ߆ࠄ‫࡝ࠞ࡞ࠕޔ‬ర⚛㑆ߩ㑐ଥߦߟ޿ߡߪ‫ޔ‬%U ߣ 4D 㑆ߪ㜞޿⋧㑐߇޽ߞߚ߇‫ޔ‬%U ߣ .K‫ޔ‬0C‫ޔ‬- 㑆ߪ⋧㑐߇ߥ߆ߞߚ‫ޔࠄ߆ߣߎߩߘޕ‬%U ߩㆬᛯ⊛Ớ❗ߦߪ‫ޔ‬
4D ߇㑐ଥߒߡ޿ࠆߎߣ߇␜ໂߐࠇߚ‫ޕ‬ ੹ᓟ‫ޔ‬቟ቯห૏ర⚛㑆ߢߩᡰ㈩⊛ߥ᜼േ߿ኋᧁ‫ޔ‬࿯ფ߆ࠄߩ⒖ⴕߦߟ޿ߡ‫⸃ߦࠄߐޔ‬ᨆࠍㅴ߼ࠆߎߣߢ‫ޔ‬ⅣႺ᡼኿⢻ߩࠠࡁࠦ߳ߩ᜼േ⸃᣿ߦߟ޿ߡᣂߚߥ⍮⷗߇ᓧࠄࠇࠆ߽ߩߣᦼᓙ
ߐࠇࠆ‫ޕ‬‫ޣ‬ᢥ₂‫ ޤ‬ౝ↰⾫๋⍹Ꮉ⋵଻ஜⅣႺ࠮ࡦ࠲࡯⎇ⓥႎ๔ᦠ㧔㧕


3B07
3B07

ᮿᓧ㐿㊟ࡡ㐿∸࡞௛╌ࡊࡒ௛╌∸ࡡ㉫″ࡡ᥆ᏽ
(1 ாኬ࣬⅌, 2 ᆀ⌣◂) ‫ې‬୯㔕㸝ኯ⏛㸞᭰Ꮔ 1, Ꮽῳᩌྍ 2,୯㔕Ꮟᩅ 2, ❉⏛༜ず 1, 㤷ཋಕ඼ 1

1. ⥬ゕ
ᮿᓧ㐿㊟ࡢ⸬ሲࢅ⿿㏸ࡊ࡙࠷ࡒ࡛⩻࠻ࡼࡿࡾ⿿ሲ㐿㊟ࡡࡥ࡛ࡗ࡚࠵ࡾࠊ᲻ 1), 2)ࡢࠉ࠾ ࢆ Ề ‸ ࡞ ௛ ╌ ࡊ ࡒỷ Ẃ ∸ ୯ࡡ ム ᩩ ୯ࡡ⌓ ⸬ Ṿ ᩐ ࢅฦ ᯊ ࡊ ࠉ ⌓ ⸬ ࡢ ࡮࡛ ࢆ ࡜
Cocconeis scutellum ࡚ࡊࡴࡼࡿ࡙࠷ࡾࡆ࡛ࢅ᪺ࡼ࠾࡞ࡊࡒࠊCocconeis scutellum ࠽ࡻࡦࡐࡡን⛸ࡡ C.scutellum var.ࡢࠉἚᓃᆀᖈࡡᾇ⏐௛╌⏍ࡡ⌓⸬࡛ࡊ࡙ᗀࡂฦᕱࡊࠉ
࡛ࡽࢂࡄ C.scutellum var.ࡢሲẴࡡ࠵ࡾࡷࡷᾇࡡዚࡱࡖࡒሔᡜ࡞⏍᜝ࡌࡾ࡛ࡈࡿࡾࠊ ௑ᅂࡢࠉࡆࡡ࠾ࢆỀ‸࡞௛╌ࡊࡒ௛╌∸࠿ᾇ⏜ᮮࡡࡵࡡ࡚࠵ࡾ࠾࡜࠹࠾ࡡึ᩷ࢅ
87Sr/86Sr ྜྷనమẒ࠽ࡻࡦ᚜㔖ඔ⣪࡝࡜࠾ࡼ㆗ㄵࡊࠉ
ᮿᓧ㐿㊟ࡡ㐿∸࡞௛╌∸ࡊࡒ௛╌∸ࡡ㉫″ࡡ᥆ᏽࢅムࡲࡾࠊ
2. ᧧షយ▩┬ᮿᓧ㐿㊟ࡡ࠾ࢆỀ‸࡞௛╌ࡊࡒ௛╌∸ࡡ Sr ࡡ㏪ḗ᢫ฝࢅ⾔ࡖࡒࠊ࠾ࢆỀ‸࡞௛╌ࡊࡒ௛╌∸ࢅ⣟Ề࡞ྱᾈࡈࡎࡒࠊḗ࡞⣟Ề࡞ྱᾈࡈࡎࡒ࠵࡛ࡡṟ῵ࢅ 1M ࡡ㓉㓗ࢻࢹ࣑ࣛࢗ⁈ᾦ࡞ྱᾈࡈࡎࡒࠊḗ࡞㓉㓗ࢻࢹ࣑ࣛࢗྱᾈᾦࡡṟ῵ࢅ 1M ࡡ㓉㓗࡛㓉㓗ࢻࢹ࣑ࣛࢗΊྙᾦ㸝pH=5㸞࡞ྱᾈࡈࡎࡒࠊࡆࡡྱᾈ⁈ᾦࢅฦ㞫ࡊ࡙ࠉṟ῵ࢅᚋࡒࠊධ࡙ࡡྱᾈ⁈ᾦࡢ 0.45ȣm ࡡ࣒ࣤࣇࣝࣤࣆ࢔ࣜࢰ࣭࡚ࢀ㐛ࢅࡊࠉ྘᢫ฝᾦࢅᚋ
ࡒࠊ྘᢫ฝ⁈ᾦ࡞ྱ᭯ࡈࡿ࡙࠷ࡾඔ⣪ࡡ⃨ᗐࢅ ICP-AES ࡚ῼᏽࢅ⾔ࡖࡒࠊ୹こඔ⣪࠽ࡻࡦ᚜㔖ඔ⣪ࡢ ICP-AES , ࢓ࣜ࢜ࣛඔ⣪㸝K, Li㸞ࡢ AAS, ௛╌∸ࡡ⤎ᬏ┞ࡢ
XRD(Rint-2100, Rigaku Co. Ltd.)࡚ྜྷᏽࢅ⾔ࡖࡒࠊSr ྜྷనమẒࡢࠉMS(Finnigan
MAT 262RPQ)࡞࡙ῼᏽࡊࡒࠊ
3. ⤎ᯕ௛╌∸ࡢࠉCa, Al, P, S ࢅ୹࡞ྱ᭯ࡊ࡙࠷ࡒࠊ⤎ᬏ┞ࡡ 80%ࡢ Calcite (CaCO3)࡚ᵋ
ᠺࡈࡿ࡙࠷ࡾࡆ࡛࠿ࢂ࠾ࡖࡒࠊ௛╌∸୯ࡡ 87Sr/86Sr ྜྷనమẒࡢ 0.709277±0.000004
࡚࠵ࡽࠉᾇỀ୯ࡡ 87Sr/86Sr ྜྷనమẒ࡛࡮࡯ୌ⮬ࡊࠉ௛╌∸ࡡ㉫″ࡢᾇ⏜ᮮࡡࡵࡡ࡚
࠵ࡾࡆ࡛࠿♟ြࡈࡿࡒࠊ
ㅨ㎙
ムᩩࡡᥞ౩ࢅࡊ࡙࠷ࡂࡓࡈ࠷ࡱࡊࡒ⩻ཿᏕࡇᑍ㛓ࡡ඙⏍᪁࡞῕ࡂᚒ♡⏞ࡊ୕ࡅࡱࡌࠊཤ⩻ᩝ⊡1) ᲻ຩୌ, ᇔⶮᩝ໩㈀យ▩, 17 (1989)., 2) ᲻ຩୌ, ⩻ཿᏕ㞟ヽ, 76, 62-75(1991).
Estimation of origin of sample clinging on remains of Matsusaki site
Nakano-Ohta, T. 1, Ando, A. 2, Nakano, T. 2, Kubota, T.1 and Mahara, Y.1
1Res. Reactor Inst., Kyoto Univ., 2 Res. Inst. for Humanity and NatureąÉ Na-Cl }ÄĀ¼¶T Ra u[^!|ÎmÔØÛ

3B08
3B08

(ÿ¸ LLRL1, Ï 2) Ò à 1, « £d 1, ]Ü ¾ 2
"(SÓ!ºÒM8=Ò|~Ć_Ra u[^ĆU Þh! 226RaĆnÃª 1600 yć ,$ Th Þh!

jÐÌ/ºÒ¶T
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--0/ąÉ Na-Cl }ÄĀ¼"»|~,.ýû*À|~1"ÝOßÀÊ,.ç¯CHL9@L!´ĄĆ©²Ìć ä'À¶T U !ÉĂĆ226Ra !

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V

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226

Ra 2ąÉ

w'!"è§«À

Ë{/ Na-Cl }ÄĀ¼¶T! Ra u[^!|ÎmÔØÛ2(«Z"

§«!ºÒĉ8=Ò|~©v/¥ÈÕ'»|~--0 Na-Cl }ÄĀ¼!ã®

,$×ĉÕ!:INL?B|~2wx/

¦½Na-Cl }ÄĀ¼!ñ¤q"×ĉM¥ÈÕ!»û|~ð 57 |ËêĆsQzć¹¶) 9 |ËqRa u[^" BaSO4 e·½U u[^" Fe e·½,.yp00Jæ,$Dæ=D9@KG@INu[^µÑõþg­ðUìÇ,.þ¶áMüáu[^µ"g"46L9KE@:HBÅã®ĉèq Na-Cl }ÄĀ¼¶"GD-G18OGD-ClÔ,$ SO4/Cl !āb

í!|~!¶À¶%"m×À¶!ÂtÌ/¨-

0-ÄĀ¼¶T!

226

Ra É ,$

228

Ra/ Ra ¢éµ"00 2.3Ĉ2400 mBq/kg0.28
N

É!ÄĀ¼íf0ÄĀ¼¶T! 238U!

-!`å!&" 226Ra ąÉ/"f¬X!G7A>F2è
ì/Í{
)ú(

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

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% Th !RÇ2è/Ç
î°Ú/!i;3!g­.ÄĀ¼¶T! Ra u[^!öÆ!Çf²±ĆgÉ



226

Ĉ9.7 .226Ra 2 1000 mBq/kg YPw'ąÉ" 0.008Ĉ2.4 mBq/kg ă

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a



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Radium isotope geochemistry in Na-Cl type saline spring waters
TOMITA, J., YAMAMOTO, M., SATAKE, H.



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#D$3*'0K=?o]

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1.  £¬!_ #3*'0K=? 9D%$}d:#%$¯ ¡$"D ¨$FXD Į H©"$¯ #oD
$yZ°o]h¬$1.+ 1)26),5'35!-4'
0&T M _$`_&DZ°&3*'0K=?DjE
{¤
Table 1 Activity ratios and specific activities of Ra isotopes in
2. ¥ qthe monazite, euxenite and granite sample
Z°1.+ 1)
Activity ratio
Specific activity(mBq/g)
Sample26),5`_M
0.10 ± 0.00
Ra/ RaRa(1.30 ± 0.00)×10%$3*'0K=?o]
1.01 ± 0.01
Monazite
Ra/ RaRa(1.30 ± 0.00)×10
Ra(1.30 ± 0.00)×10
 "o]& Table 1
8.50± 0.01
Ra/ RaRa(2.89 ± 0.00)×10
l$
Euxenite
1.00 ± 0.00
(3.40 ± 0.01)×10
Ra/ RaRa
Ra(2.89 ± 0.00)×10
3. Z°n@2.62 ± 0.14
(3.96 ± 0.12)×10
Ra/ RaRaxI¥q&¥Granite1.00 ± 0.04
(1.51 ± 0.06)×10
Ra/ RaRa(3.96 ± 0.08)×10Ra!/6(6C%³H &¦15
Qª&2510days (1)2510days (2)7Yw­®fD
2530days
3*'0K=?o]e25365days
10
c& Y
5010days
5030days
4. z\Monazite(8.5)
1)

228

226

228

2

224

228

226

3

224

2
2

228

226

228

224

228

226

228

226

228

224

228

226

224

2

5. Gp

5

-1

0

1

2

3

4
pH

5 HCl615 days
7 (1) 8

-1

0

1

2

3

4
pH

5

HCl 15 days (2)HCl 15 days (3)Euxenite (0.10)

228

226

228Ra/
226RaRa
Activityratio
ratio
Ra/
Activity
ofof

0.400

228
226Ra
Activity ratio
ratio of
Activityof 228Ra/
Ra / 226
Ra¬!_k¢$ p² U$gD
$3*'0«^
232
Th# 1 NRSi%$228
Ra  238U # 5 NRS&i  % $ 226Ra  o ]  (228Ra / 226Ra)SF& Fig. 1 1.+`_PJpH 8s
< 228Ra/226Ra o]^
$BL 7r26),5"BL#% 
 #7|¬!_W
O$vmA 3*'0K=?
D&[u$#%


Activity ratio of 228Ra/226Ra
Activity ratio of 228Ra / 226 Ra

224

0.2

0.03
0.0

6

7

8

HCl 15 days
Granite (2.6)21) K. Nagai, E. Hashimoto, J. Sato, Radioisotopes,
55, 567-575 (2006)

Activity ratio of Ra isotopes leached frommineral and rock
NAGAI, K., TAKAHASHI, M. and SATO, J.

1-1

Fig. 1 :

0

1

2

3

4
pH

5

6

7

8

Activity ratios of 228Ra / 226Ra in leachates frommonazite, euxenite and granite samples in HClaqueous solutions and in neutral solution.

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KUR ߦ߅ߌࠆਛᕈሶᾖ኿ߦࠃࠅ Al ⹜ᢱ߆ࠄ(n, 2n)෻ᔕߢ↢ᚑߒߚ
26

Al ߩቯ㊂(1 ੩ᄢἹ‫ޔ‬2 ᣣᄢᢥℂ‫ޔ‬3 ᧲ᄢ㒮Ꮏ) ٤㑐ᧄବ 1‫ޔ‬㜞ችᐘ৻ 1‫ޔ‬ዊᨋ⾆ਯ 2‫ޔ‬᧻ፒᶈਯ 3‫ޔ‬ᩊ↰⺈৻ 1䇼ߪߓ߼ߦ䇽ᚒ‫ߦߢ߹ࠇߎޔߪࡊ࡯࡞ࠣߩޘ‬੩ㇺᄢቇේሶἹታ㛎ᚲߩ⎇ⓥἹ(KUR)ߦ߅޿ߡ‫ޔ‬ᯏེਛᕈሶ᡼኿ൻಽᨆ(INAA)ߦࠃࠅ‫ޔ‬ᷓᶏᐩၸⓍ‛߆ࠄㆬ೎ߒߚ⏛ᕈ⃿☸⹜ᢱߩൻቇ⚵ᚑߩ᷹ቯࠍⴕ޿‫ࠇߙࠇߘࠍࡓ࠙ࠫ࡝ࠗߪߚ߹࡞ࠤ࠶࠾ޔ‬ᢙ%‫ޔ‬ᢙ ppm ߢቯ㊂ߢ߈ߚ⹜ᢱࠍ࿾⃿ᄖ⿠Ḯ‛⾰ߣ್ቯߒߚ 1) ‫੹ޕ‬ᓟ‫ߩࠄࠇߎޔ‬࿾⃿ᄖ⿠Ḯߣ⠨߃ࠄࠇࠆ⃿☸⹜ᢱਛߩ 26Al ࠍቯ㊂ߔࠆߦ޽ߚࠅ‫⹜☸⃿ޔ‬ᢱߩ INAA ߩ㓙ߦ‫ޔ‬ㅦਛᕈሶߦࠃࠅ߅ߎࠆ 27Al (n, 2n) 26Al ߩᓇ㗀ࠍ⷗Ⓧ߽ࠆᔅⷐ߇޽ࠆ‫⎇ᧄߢߎߘޕ‬ⓥߢߪ‫ޔ‬KUR ߦ߅޿ߡ㜞⚐ᐲ Al ⹜ᢱࠍ⃿☸⹜ᢱߣห᭽ߩ᧦ઙ
ߢਛᕈሶᾖ኿ࠍⴕ޿‫(ޔ‬n, 2n)෻ᔕߢ↢ᚑߔࠆ 26Al ࠍቯ㊂ߒߚ‫⚿ߩߘޕ‬ᨐ߆ࠄ‫ޔ‬INAA ߦࠃࠅ‫ޔ‬⃿☸⹜ᢱਛߦ↢ᚑߔࠆ 26Al ߩ㊂ࠍ⷗Ⓧ߽ߞߚ‫ޕ‬䇼ታ㛎䇽㜞⚐ᐲ Al ⹜ᢱߩਛᕈሶᾖ኿ߪ‫ޔ‬એਅߩ 2 ⒳㘃ߩ᧦ઙ(γ) KUR ߩ࿶᳇ャㅍ▤ No. 2(Pn-2)
ߢ 50 ಽ㑆‫(ޔ‬δ)Ἱᔃߢ 50-120 ᤨ㑆‫ޕߚߞⴕߢޔ‬ᾖ኿ᓟߩ Al ⹜ᢱߪ‫ޔ‬ൻቇಣℂࠍⴕ޿ Al2O3
ߩ࿕૕⹜ᢱߣߒߚᓟ 2)‫᧲ޔ‬੩ᄢቇߩ࠲ࡦ࠺ࡓടㅦེ(MALT)ࠍ↪޿ߚടㅦེ⾰㊂ಽᨆᴺ(AMS)ߦࠃࠅ 26Al ߩ᷹ቯࠍⴕߞߚ 3)‫ޕ‬䇼⚿ᨐ࡮⠨ኤ䇽᧦ઙ(γ)ߢਛᕈሶᾖ኿ࠍⴕߞߚ㜞⚐ᐲ Al ⹜ᢱߦ߅ߌࠆ AMS ߩ⚿ᨐߪ‫ޔ‬26Al /27Al= (5.4r0.8)10-14 ߢ޽ߞߚ‫⹜☸⃿ޕ‬ᢱߩ INAA ߪߎߩ᧦ઙߢⴕߞߡ߅ࠅ‫ޔ‬Al ฽᦭㊂߇ 0.1 µg⒟ᐲߩ⃿☸⹜ᢱߩ႐ว‫(ޔ‬n, 2n)෻ᔕߦࠃࠅ⃿☸⹜ᢱਛߦ 26Al ߇↢ᚑߔࠆߣ‫ޔ‬ൻቇಣℂߩ㓙ߦ
27

Al ࠠࡖ࡝ࠕࠍ 100-200 µg ട߃ࠆߎߣ߆ࠄ‫⹜☸⃿ޔ‬ᢱߦ߅ߌࠆ 26Al /27Al Ყߪ<5.410-17 ߣ⷗Ⓧ߽ࠄࠇ‫ޔ‬MALT ߦ߅ߌࠆ AMS ߩᬌ಴㒢⇇୯ 26Al /27Al =110-15(Ref. 3)ࠍਅ࿁ࠆ‫ޕ‬એ਄ࠃࠅ⃿☸⹜ᢱߩ INAA ߩ㓙ߦ‫ޔ‬ㅦਛᕈሶߦࠃࠅ߅ߎࠆ 27Al (n, 2n) 26Al ߩᓇ㗀ߪ㕖Ᏹߦዊߐ޿ߎߣ
߇⏕⹺ߐࠇߚ‫ޕ‬
᧦ઙ(δ)ߢਛᕈሶᾖ኿ࠍⴕߞߚ㜞⚐ᐲ Al ⹜ᢱߦ߅ߌࠆ 26Al ߩ᷹ቯ⚿ᨐߣ‫ޔ‬KUR ߩἹᔃߦ߅

ߌࠆ㜞ࠛࡀ࡞ࠡ࡯ਛᕈሶ᧤ 4)(⸘▚୯)෸߮ 27Al (n, 2n) 26Al ߩ෻ᔕᢿ㕙Ⓧ 5)߆ࠄ᳞߼ߚ⸘▚୯ߣߩᲧセ߽ⴕߞߚ‫ߚ߹ޕ‬หߓ᧦ઙߢਛᕈሶᾖ኿ࠍⴕߞߚ㜞⚐ᐲ Ni ⹜ᢱߦ߅޿ߡ‫ޔ‬58Ni(n, np)‫ޔ‬58Ni(n, 2n) 57Niψβ+-decay ߦࠃࠅ↢ᚑߒߚ 57Co ߦߟ޿ߡ߽᷹ቯࠍⴕߞߡ߅ࠅ‫⚿ߩߎߪߦᤨ⴫⊒ޔ‬ᨐ߽૬ߖߡ‫ޔ‬KUR ߩἹᔃߦ߅ߌࠆ㜞ࠛࡀ࡞ࠡ࡯ਛᕈሶ᧤ࠍታ㛎⊛ߦ⷗Ⓧࠆ੍ቯߢ޽ࠆ‫ޕ‬㩷䇼ෳ⠨ᢥ₂䇽1)S. Sekimoto et al., J. Radioanal. Nucl. Chem. 272, No. 3, 447 (2007)2)S. Shibata et al., J. Nucl. Radiochem. Sci. 7, No. 2, 33 (2006)
3)H. Matsuzaki et al., Nucl. Instrum. Methods Phys. Res. B 259, 36 (2007)4)K. Kobayashi et al., KURRI Technical Report 287, 1-31 (1987)5)K. Shibata et al., J. Nucl. Sci. Tech. 39, 1125 (2002)
Determination of 26Al produced by fast neutron-induced reaction (n, 2n) in an aluminum sheet at KUR
SEKIMOTO, S., TAKAMIYA, K., KOBAYASHI, T., MATSUZAKI, H., SHIBATA, S.

3P02ከ㔜࣐࢞ࣥ⥺ᨺᑕ໬ศᯒἲࢆ⏝࠸ࡓ㝹▼ヨᩱࡢྠ఩యศᯒ◊✲(ཎᏊຊᶵᵓ) ‫ึۑ‬ᕝ㞝୍ࠊᐑᮏࣘࢱ࢝ࠊ኱⃝ᔞேࠊ⸨ᬸ㍜ࠊᮌᮧᩔࠊ
኱ᓥ┿⃈ ᡃࠎࡣ࣐࢞ࣥ⥺ࡢྠ᫬ᐃ࡜୰ᛶᏊᨺᑕ໬ศᯒࢆ⤌ࡳྜࢃࡏࡿࡇ࡜࡟ࡼࡾࠊ㧗ឤᗘ࡞ඖ⣲ศᯒἲ࡛࠶ࡿከ㔜࣐࢞ࣥ⥺ᨺᑕ໬ศᯒἲࢆ㛤Ⓨࡋ࡚ࡁࡓࠋᮏἲ࡟ࡼࡾ㸳㸮࠿ࡽ㸯㸮㸮࣑ࣜࢢ࣒ࣛࡢᒾ▼ヨᩱ୰ࡢ࢖ࣜࢪ࣒࢘ࢆ㸯㸮㹮㹮㹲⛬ᗘࡢ᳨ฟ㝈⏺࡛ᐃࡍࡿࡇ࡜ 1,2㸧࡟ᡂຌࡋࡓࠋ

ࡉࡽ࡟ᮏἲࡣ㠀◚ቯศᯒࢆ⾜ࡗ࡚࠸ࡿࡢ࡛ࠊ╔┠ࡋ࡚࠸ࡿඖ⣲௨እࡢከඖ⣲ࡢྠ᫬ᐃ㔞ࡀྍ⬟࡛࠶ࡿࠋᮏ◊✲࡛ࡣࡇࡢከ㔜࣐࢞ࣥ⥺ᨺᑕ໬ศᯒἲࢆ⏝࠸࡚㝹▼୰࡟ぢฟࡉࢀࡿࣉࣞࢯ࣮
࣮ࣛࢢࣞ࢖ࣥ୰ࡢᚤ㔞ඖ⣲ศᯒ࠾ࡼࡧྠ఩యศᯒࢆヨࡳࡓࠋࣉࣞࢯ࣮࣮ࣛࢢࣞ࢖ࣥ 3㸧࡜ࡣ㝹▼୰࡟ぢࡽࢀࡿᚤᑠࡢ㖔≀⢏Ꮚ࡛ኴ㝧⣔ࡢᙧᡂ௨๓ࡢ㉥Ⰽᕧᫍࡸ㉸᪂ᫍ⇿Ⓨ࡞࡝࡛࡛ࡁࡓࡶ
ࡢ࡜⪃࠼ࡽࢀࠊࡑࢀࡽᜏᫍ୰࡛ࡢඖ⣲ྜᡂ㐣⛬ࡢ᝟ሗࢆಖᣢࡋ࡚࠸ࡿࡶࡢ࡜⪃࠼ࡽࢀࡿࠋࡑ
ࡇ࡛ࣉࣞࢯ࣮࣮ࣛࢢࣞ࢖ࣥ୰ࡢᚤ㔞ඖ⣲ศᯒࢆ⾜࠺ࡇ࡜࡟ࡼࡾኴ㝧⣔ࢆᙧᡂࡍࡿ࠸ࡃࡘ࠿ࡢ
ඖ⣲ྜᡂ㐣⛬࡟㛵ࡍࡿ㔜せ࡞᝟ሗࡀᚓࡽࢀࡿࡶࡢ࡜ᮇᚅࡉࢀࡿࠋ
ጞཎⓗ㝹▼࡛࠶ࡿⅣ⣲⣔ࢥࣥࢻࣛ࢖ࢺࠊ࢔࢚ࣥࢹ㝹▼࠿ࡽ AMARI ࡽ 4㸧ࡢ᪉ἲ࡟ᇶ࡙࠸
࡚໬Ꮫศゎࢆ⾜ࡗࡓࠋࣇࢵ໬Ỉ⣲㓟࠾ࡼࡧሷ㓟࡟ࡼࡿศゎࢆ⾜ࡗࡓࡢࡕ࡟ KOH ࢆῧຍࡋ࢔
ࣝ࢝ࣜศゎࢆ⾜࠸ࣉࣞࢯ࣮࣮ࣛࢢࣞ࢖࡛ࣥ࠶ࡿࢼࣀࢲ࢖ࣖࣔࣥࢻࢆྵࡴࢥࣟ࢖ࢻ≧ࡢヨᩱࢆᚓࡓࠋ  ᚓࡽࢀࡓࢼࣀࢲ࢖࢔ࣔࣥࢻࢆ▼ⱥ⟶࡟ᑒධࡋࡇࢀࢆཎᏊຊᶵᵓ࣭◊✲⏝ཎᏊ⅔ JRR-3 ࡢ
Ẽ㏦⟶↷ᑕ᪋タ PN-1㸦ȭ=5.21013 n sec-1 cm-2㸧࡟࠾࠸࡚ 10 ศ㛫ࡢ↷ᑕࢆ⾜ࡗࡓࠋ↷ᑕࡣ࣐࢖ࢡࣟࢲ࢖࢔ࣔࣥࢻヨᩱࡢ࡯࠿࡟ Eu, Ir, Ag ࠾ࡼࡧᶆ‽ᒾ▼ヨᩱ JP-1 ࢆඖ⣲ᶆ‽࡜ࡋ࡚ྠ୍᮲௳࡛↷ᑕࠊ ᐃࢆ⾜࠸௒ᅇࡢ ᐃ࡛  ඖ⣲ࠊ ᰾✀ࡢ᳨ฟ࡟ᡂຌࡋࡓࠋࡇࡢ࠺ࡕ࢖ࣜࢪ࣒࢘ࡣ  ᰾✀ࡀ᳨ฟࡉࢀࡓࡢ࡛ྠ఩యẚ࡟ࡘ࠸᳨࡚ウࡋࡓࡀࠊᶆ‽ヨᩱ࡜ࡢẚ㍑࡛≉࡟ྠ఩యࡢ␗ᖖ
ࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࠋ  ࡲࡓ (X ྠ఩యࡢศᯒࢆ⾜ࡗࡓࠋ ࡲࡎ (X(X ⃰⦰ྠ఩యヨᩱ࡜ኳ↛ (X ヨᩱࢆࡑࢀࡒࢀ▼ⱥ⟶࡟ᑒධࡋཎᏊ⅔࡟࡚↷ᑕࢆ⾜ࡗࡓࠋ ྠ᫬࡟ $OOHQGH 㝹▼࠿ࡽ᥇ྲྀࡋࡓࢥࣥࢻ࣮ࣝࣝヨᩱࡶྠᵝ࡟▼ⱥ⟶࡟ᑒධࡋࠊ(X ヨᩱ࡜ྠࡌ࢝ࣉࢭࣝ࡟ධࢀ࡚ཎᏊ⅔࡛ࡢ↷ᑕࢆ⾜࠸ࠊࡑࡢᚋከ㔜࣐࢞ࣥ⥺ศᯒࢆ⾜ࡗࡓࠋ ⤖ᯝࢆḟࡢ࣮࣌ࢪࡢᅗ⾲࡟♧ࡍࠋ  ࡘࡢࢥࣥࢻ࣮ࣝࣝヨᩱࡢ࠺ࡕ  ࡘࡣㄗᕪࡢ⠊ᅖෆ࡛ኳ↛ࡢ (X ࡢ್࡜୍⮴ࡋࡓࡀ㸡㸰ࡢ (X ヨᩱࡣࡇࢀࢆእ
ࢀ࡚ (X ࡀ㐣๫࡞್ࢆ♧ࡋࡓࠋ ᩥ⊩ 㸧<+$768.$:$HWDO*HRFKLP&RVPRFKLP$FWD$ 㸧<+$768.$:$HWDO-5DGLRDQDO\W1XFO&KHP 3㸧($1'(56DQG(=,11(5 0HWHRULWHV 
4㸧($0$5,HWDO*HRFKLP&RVPRFKLP$FWD  Measurements of isotope ratios in meteorite samples using neutron activation analysis withmultiparameter coincidence method
HATSUKAWAࠊY., MIYAMOTO, Y., OSAWA,T., TOH,Y.,KIMURA,A., OSHIMA, M.,୰ᛶᏊ࢖࣓࣮ࢪࣥࢢཬࡧ㠀◚ቯศᯒᡭἲࢆ⏝࠸ࡓ㔠ᒓࡢ㛗ᮇᏳᐃᛶホ౯◊✲

3P03
3P03

(ཎᏊຊᶵᵓ) ○ᯇỤ⚽᫂, ྜྷᕝⱥᶞ, ᯇᯘᨻோ, 㣤಴ᐶ, ℩ᕝ㯞㔛Ꮚ࠙ࡣࡌࡵ࡟ࠚᨺᑕᛶᗫᲠ≀ᆅᒙฎศࢩࢫࢸ࣒ࡢ㛗ᮇ⪏ஂᛶホ౯ࡢࡓࡵ࡟ࠊᅵ୰࡟ᇙタࡉࢀ࡚࠸ࡓ
㕲㑇≀ࡢ⭉㣗㔞ホ౯ࡢ㧗ᗘ໬◊✲ࢆ⾜ࡗ࡚࠸ࡿࠋᮏሗ࿌࡛ࡣࠊᅵተ୰㔠ᒓࡢ㛗ᮇᏳᐃᛶ࡟㛵ࡍࡿ◊✲࡟ᑐࡋ࡚ࠊᚑ᮶ࡢ X ⥺ CT ᡭἲ࡞࡝࡟ຍ࠼࡚ࠊ㔠ᒓ➼࡬ࡢ㏱㐣ᛶ࡟ඃࢀࡓ୰ᛶᏊࣅ࣮࣒ࢆ฼
⏝ࡋࡓ࢖࣓࣮ࢪࣥࢢᡭἲࡸ㠀◚ቯඖ⣲⤌ᡂศᯒࢆ㐺⏝ࡋࠊ⭉㣗᮲௳ࡢᢕᥱ࡬ࡢ㐺⏝ྍ⬟ᛶࢆ᥈ࡗࡓࠋ࡞࠾ࠊᮏ◊✲ࡣཎᏊຊᶵᵓෆ࡛ᐇ᪋ࡉࢀࡓᖹᡂ 18 ᖺᗘ㐃ᦠ࣭⼥ྜ◊✲ࠕ㔠ᒓࡢ㛗ᮇᏳᐃᛶ஦౛ホ౯◊✲ࠖ࡟ᇶ࡙࠸࡚⾜ࢃࢀࡓࡶࡢ࡛࠶ࡿࠋ
࠙ᐇ㦂ࠚ1)

ᐃヨᩱ〇స㸸Ⅳ⣲㗰㸦SM400B

䐟㻌䐠

30x30x2mm㸧

ࢆᶍᨃᾏỈ୰࡟⣙ 5 ᖺ㛫ᾐₕࡋ⾲㠃ࢆ⭉㣗ࡉࡏࡓࡶࡢࢆ⭉㣗Ⅳ⣲㗰ヨᩱ࡜ࡋࡓࠋ୍᪉ࠊNAA

ᐃᐇヨᩱ࡜ࡋ࡚ࡣࠊᐑ

ෆᗇᥦ౪ࡢᏱ࿴ዉ㎶㝠቎ཧ⪃ᆅ㝙ሯ኱࿴භྕቡฟᅵ㘵ཬࡧ

䐟
㻌
㻌
䐠

ยᏊࡢᐇヨᩱࢆ⏝࠸ࡓࠋ2) ୰ᛶᏊ࢖࣓࣮ࢪࣥࢢ㸸ཎᏊຊᶵᵓ JRR-3 ࡢࣛࢪ࢜ࢢࣛࣇ࢕⿦⨨ࢆ⏝࠸࡚㏱㐣⏬ീ᧜ᙳཬࡧ
CT ᧜ᙳࢆ⾜ࡗࡓࠋ3) X ⥺ CT ࢖࣓࣮ࢪࣥࢢ㸸ᮾⰪ♫〇TOSCANER-32250μhd(ᐃ᱁ 225kV-1mA)࡟࡚ࠊ࣐࢖ࢡࣟ
X ⥺ CTᐃࢆ⾜࡞ࡗࡓࠋヨᩱࡣ㗵ࡧࡢ๤㞳ࢆ㜵ࡄࡓࡵ࡟ཌ

ᅗ㸯

ࡉ 4mm ࡢᶞ⬡ᅛᐃࢆ⾜࡞ࡗࡓࠋ4) ୰ᛶᏊ฼⏝㠀◚ቯඖ⣲⭉㣗Ⅳ⣲㗰ヨᩱࡢ୰ᛶᏊᢞ
ᙳ⏬ീ(ୗࠊ㯮⥺ࡣษ᩿఩⨨ࢆ♧ࡍ)ཬࡧ᩿ᒙീ(ୖ)ศᯒ㸸ᐇ⪃ྂᏛⓗヨᩱࡢ NAA ࡣࠊJRR-3 ࡢ PN-1 ࡟࡚ 20ศ㛫↷ᑕࢆ⾜࠸ࠊk0 ἲ࡟࡚ᐃ㔞ࢆ⾜ࡗࡓࠋࡲࡓࠊJRR-3
༶Ⓨγ⥺ศᯒ⿦⨨࡟࡚ࠊ㕲⪃ྂ㑇≀ヨᩱ୰ࡢ㕲ࠊỈ⣲ࡢ
2D ࣐ࢵࣆࣥࢢࡢヨ⾜ࢆ⾜ࡗࡓࠋ࠙⤖ᯝ࡜⪃ᐹࠚ୰ᛶᏊ࢖࣓࣮ࢪࣥࢢ: ᅗ 1 ࡟⭉㣗Ⅳ⣲㗰ヨᩱࡢᢞᙳ⏬ീ(㯮⥺ࡣ᩿ᒙ఩⨨)࡜᩿ᒙീࢆ♧ࡍࠋ᩿ᒙീ࡟
࠾࠸࡚⭉㣗࡟క࠺ẕᮦࡢῶ⫗ࡢᵝᏊࡀ᫂░࡟ほᐹ࡛ࡁࡓX ⥺ CT ࢖࣓࣮ࢪࣥࢢ㸸࣐࢖ࢡࣟ X ⥺ CT
ཌ 80μm ࡛ᐃࡋࡓࠋ⏬ീ

ᅗ㸰⭉㣗㕲ヨᩱࡢ X ⥺ CT ⏬ീᐃࡣࢫࣛ࢖ࢫ

ᐃࡢ⤖ᯝ㸪㗵ཌࡣ᭱኱࡛ 2.16±0.04mm ࡛࠶ࡗࡓࠋヨᩱࡢ୍㒊ࡣ⬺㗵ฎ⌮ࡋ࡚࠾ࡾ㸪ࡑࡢ㒊ศࡣ X ⥺ࡢᩓ஘࡟ࡼࡾⓎ⏕ࡍࡿ࢔ࣥࢳࣇ࢓ࢡࢺ⏬ീࡢᙳ㡪ࡀฟ࡚࠸ࡿࠋ
ྠീࡢཌࡉࢆ

ᐃࡋࡓ⤖ᯝ 0.09±0.04mm ࡛࠶ࡗࡓࠋ୰ᛶᏊ฼⏝㠀◚ቯඖ⣲ศᯒ㸸NAA ࡟࠾ࡅࡿ㕲⪃ྂ㑇≀ࡢศᯒ࡟࠾࠸࡚ࡣࠊ100ppb 㹼 1㸣ࡢᗈ⠊ᅖࡢ⃰ᗘࣞ࣋ࣝ࡟ΏࡾࠊFe, Mn, Co, Cu,
As, W ࡞࡝ 15 ඖ⣲ࡢศᯒࡀྍ⬟࡛࠶ࡗࡓࠋࡲࡓࠊᐇ㝿ࡢ⪃ྂヨᩱ࡟ 2D-PGAᐃࢆᐇ᪋ࡋࠊඖ

⣲ศᕸ⏬ീࡀᚓࡽࢀࡓࠋ୺ᡂศࡢ㕲ཬࡧ⭉㣗≀⏤᮶ࡢࡶࡢ࡜⪃࠼ࡽࢀࡿỈ⣲ࡢඖ⣲ศᕸࢆ 1mm2ࡢ఩⨨ศゎ⬟࡛ᐃࡍࡿࡇ࡜ࡀྍ⬟࡛࠶ࡗࡓࠋ

Long-term stability evaluation by neutron imaging and activation analysis of archeologicalsamples for radioactive waste disposal study
MATSUE, H., YOSHIKAWA, H., MATSUBAYASHI, M., IIKURA, H., SEGAWA, M.

3P04
3P04

ടㅦེⅣႺߢ↢ᚑߔࠆੑᰴਛᕈሶߩࠦࡦࠢ࡝࡯࠻
ㆤ⭁૕ਛߦ߅ߌࠆಽᏓ
㧔㜞ࠛࡀ⎇㧕 ٤ᧁਅື৻‫᧛᧻ޔ‬ብ‫ޔ‬೎ᚲశᄥ㇢‫ᤩ↰⼾ޔ‬ᒄ‫ޔ‬᪊ᧄ๺⟵ 㜞ࠛࡀ࡞ࠡ࡯ടㅦེ⎇ⓥᯏ᭴㧔KEK㧕ߢߪ‫ޔ‬㜞ࠛࡀ࡞ࠡ࡯ߩ㓁ሶࠪࡦࠢࡠ࠻ࡠࡦߩ
ㆇォߦ઻޿‫࠻࡯࡝ࠢࡦࠦޔࡊࡦ࠳ࡓ࡯ࡆ߿࠻࠶ࡀࠣࡑޔ‬ㆤ⭁૕ߥߤߦടㅦߐࠇߚ☸ሶ߇ᛂߜㄟ߹ࠇ‫ޔ‬ᩭ⎕⎈෻ᔕߥߤߢ↢ߓߚਛᕈሶߥߤ߇ੑᰴ☸ሶߣߒߡ⊒↢ߔࠆ‫ߦ․ޕ‬ਛᕈሶߦߟ޿ߡߪㅘㆊജ߇ᒝߊടㅦེ๟ㄝߩ᭽‫‛ߥޘ‬૕ࠍ᡼኿ൻߔࠆߩߢ‫ޔ‬ਛᕈሶߩಽᏓࠍᛠីߔࠆߎߣߪ᡼኿✢㒐⼔ߩⷰὐ߆ࠄ߽㕖Ᏹߦ㊀ⷐߢ޽ࠆ‫ߢ߹ࠇߎޕ‬᭽‫ߥޘ‬ᣉ⸳ߦ߅޿ߡࠦࡦࠢ࡝࡯࠻ㆤ⭁૕ਛߩ᡼኿ᕈᩭ⒳ߩᷓᐲಽᏓ߇᷹ቯߐࠇ‫⴫ޔ‬㕙߆ࠄ~1 m߹ߢߩੑᰴ☸ሶߩャㅍߦߟ޿ߡ᣿ࠄ߆ߦߐࠇߡ߈ߚ‫⎇ᧄޕ‬ⓥߢߪࠦࡦࠢ࡝࡯࠻ㆤ⭁૕ߩᦝߦᷓ޿ㇱಽߩੑᰴਛᕈሶߩ᜼േߦߟ޿ߡߩ⍮⷗ࠍᷓ߼ࠆߎߣࠍ⋡ᮡߦ‫ޔ‬ᭂᓸᒙߩǫ✢ࠬࡍࠢ࠻ࡠࡔ࠻࡝࡯ࠍⴕߞߚ‫ޕ‬ KEK ߩ EP1 ࡆ࡯ࡓ࡜ࠗࡦߩᢙࠞᚲߢ~5 m ෘߩࠦࡦࠢ࡝࡯࠻ㆤ⭁૕ߩࡏ࡯࡝ࡦࠣࠍ
ⴕߞߚ‫ޕ‬ᓧࠄࠇߚࠦࡦࠢ࡝࡯࠻ࠦࠕߩ৻ㇱಽࠍ☳⎈ߒࡊ࡜ࠬ࠴࠶ࠢኈེߦ⹣߼ߡ‫⴫ޔ‬㕙߆ࠄ 3 m ߹ߢߩ⹜ᢱߪㅢᏱߩ HPGe ࠍ↪޿ߡǫ✢ࠬࡍࠢ࠻ࡠࡔ࠻࡝࡯ࠍⴕߞߚ‫ޕ‬3 mࠃࠅ߽ᷓ޿ㇱಽߩ⹜ᢱߦߟ޿ߡߪ᡼኿⢻߇㕖Ᏹߦᒙߊ‫ޔ‬ㅢᏱߩ᷹ቯߢߪቯ㊂߇࿎㔍ߢ޽ࠆߩߢ‫ޔ‬Ge ᬌ಴ེߩᏀฝߣ਄ᣇะࠍ 3 ߟߩ NaI ࠪࡦ࠴࡟࡯࡚ࠪࡦᬌ಴ེߢ࿐ߞߚ
HPGe ࠍ↪޿ߡǫ✢ࠬࡍࠢ࠻ࡠࡔ࠻࡝࡯ࠍⴕߞߚ‫ߩߎޕ‬᷹ቯߦࠃࠅ Ge ߣ NaI ߩࠪࠣ࠽࡞ߩࠦࠗࡦࠪ࠺ࡦࠬ╬ࠍขࠆߎߣ
ߢൻቇಽ㔌ࠍߒߥߊߡ߽‫ޔ‬ᩭ⒳ߦࠃߞ

101ࠄߔߎߣߦᚑഞߒߚ‫ޕ‬100

 ᓧࠄࠇߚ Na-22‫ޔ‬Mn-54‫ޔ‬Co-60‫ޔ‬
Cs-134 ߩᷓᐲಽᏓࠍ࿑ 1 ߦ␜ߔ‫ޕ‬㜞ㅦਛ ᕈ ሶ ߣ ߩ (n,2n) ෻ ᔕ ߢ ↢ ᚑ ߔ ࠆ
Na-22 ߣ Mn-54 ߪ⴫㕙ㇱಽ߆ࠄᜰᢙ㑐

Activity (Bq/g)ߡߪࡃ࠶ࠢࠣ࡜࠙ࡦ࠼ᚑಽࠍ 2-3 ᩴᷫ

10-1
10-2
10-3

ᢙ⊛ߦᷫዋߔࠆ‫৻ޕ‬ᣇߢ‫ޔ‬ᾲਛᕈሶߣ

10-4

ߩ(n,J)෻ᔕߢ↢ᚑߔࠆ Co-60 ߣ Cs-134

10-50ߪ⴫㕙߆ࠄ~30 cm ㇱಽߦ߆ߌߡࡆ࡞
࠼ࠕ࠶ࡊߒ‫ߩߘޔ‬ᓟᜰᢙ㑐ᢙ⊛ߦᷫዋߔࠆ‫ ߚ߹ޕ‬70 cm ઃㄭߢ௑߈߇ᄌࠊࠆ
ߎߣ߇ᣂߚߦ⊒⷗ߐࠇߚ‫ޕ‬ٟ Na-22
ً Mn-54‫ غ‬Co-60
٠ Cs-134

100

200

300

400

500

Depth (cm)࿑ 1 ࠦࡦࠢ࡝࡯࠻ㆤ⭁૕ਛߩ Na-22‫ޔ‬Mn-54‫ޔ‬Co-60‫ޔ‬Cs-134 ߩᷓᐲಽᏓ

Distribution of secondary neutron produced at high-energy accelerator facility in a shielding
concrete
KINOSHITA, N., MATSUMURA, H., BESSHO, K., TOYODA, A., MASUMOTO, K.

3P05
3P05

හ⊒ࠟࡦࡑ✢࠼࠶ࡊ࡜࡯ᐢ߇ࠅᴺߦࠃࠆࡎ࠙⚛࠼࡯ࡊ࠳ࠗࡗࡕࡦ࠼ߩಽᨆ
(ᄢหᎿᄢ 1㧘࿖㓙ၮ〈ᢎᄢℂ 2㧘ේሶജᯏ᭴ 3) ٤㜞ጊദ 1㧘㈬੗㓁৻ 1㧘ᷰㄝ⵨ᄦ 1㧘ਭ଻⻞຦ 2㧘᧻ᳯ⑲᣿ 3㧘ἑᎹ㤗㉿ሶ 3‫ޤ⸒✜ޣ‬හ⊒ࠟࡦࡑ✢࠼࠶ࡊ࡜࡯ᐢ߇ࠅᴺߪ㧘10B(n,Į)7*Li ෻ᔕߢ⊒↢ߒߚ㜞ࠛࡀ࡞ࠡ
࡯7*Li ߩ‛⾰ਛߢߩᷫㅦ᜼േ߆ࠄ㧘⹜ᢱߩ‛ℂ⊛࡮ൻቇ⊛⁁ᘒߦ㑐ߔࠆᖱႎࠍᓧࠆಽ
ᨆᴺߢ޽ࠆ‫ߢ߹ࠇߎޕ‬ᚒ‫ߪߢࡊ࡯࡞ࠣߩޘ‬㧘ᷫㅦ᜼േߩᜰᮡߢ޽ࠆᷫㅦቯᢙ D ߩၮ␆࠺࡯࠲ࠍᓧࠆߴߊ㧘᭽‫⹜ߥޘ‬ᢱߩಽᨆࠍⴕߞߡ߈ߚ߇㧘὇⚛න૕⹜ᢱߦߟ޿ߡߪ࠺࡯
࠲߇ਇචಽߢ޽ࠆ‫⎇ᧄߢߎߘޕ‬ⓥߢߪ㧘ᰴ਎ઍ㔚ሶ࠺ࡃࠗࠬ↪᧚ᢱߣߒߡᦼᓙߐࠇߡ
޿ࠆࡎ࠙⚛࠼࡯ࡊ࠳ࠗࡗࡕࡦ࠼ߦᵈ⋡ߒߚ‫ࠍ⚛࠙ࡎޕ‬ᓸ㊂ߦᷝടߒߚ࠳ࠗࡗࡕࡦ࠼⹜
ᢱߦහ⊒ࠟࡦࡑ✢࠼࠶ࡊ࡜࡯ᐢ߇ࠅᴺࠍㆡ↪ߔࠆߎߣߢ㧘὇⚛න૕⹜ᢱਛߢߩ 7*Li ߩᷫㅦ᜼േߦ㑐ߔࠆ⍮⷗ࠍᓧࠆߎߣࠍ⋡⊛ߒߚ‫ޕ‬‫ޣ‬ታ㛎‫⹜࠼ࡦࡕࡗࠗ࠳ࡊ࡯࠼⚛࠙ࡎޤ‬ᢱߪ㧘ࡊ࡜࠭ࡑ CVD (chemical vapor deposition)ᴺߢࠤࠗ⚛ၮ᧼਄ߦ⭯⤑ᒻᚑߐࠇߚ߽ߩࠍ૶↪ߒߚ‫⹜ޕ‬ᢱࠨࠗ࠭ߪ 12.012.0 mm2ߢ㧘࠳ࠗࡗࡕࡦ࠼⤑ෘߪ 20 μm ߢ޽ࠆ‫ޕ‬හ⊒ࠟࡦࡑ✢࠼࠶ࡊ࡜࡯ᐢ߇ࠅᴺߦࠃࠆ᷹ቯ
ߪ㧘ᣣᧄේሶജ⎇ⓥ㐿⊒ᯏ᭴ߩ JRR-3M ߦ૬⸳ߐࠇߚහ⊒ࠟࡦࡑ✢ಽᨆⵝ⟎ࠍ↪޿ߡⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐ߅ࠃ߮⠨ኤ‫ޤ‬ಽᨆߩ⚿ᨐ㧘᷹ቯߦ↪޿ߚࡎ࠙⚛࠼࡯ࡊ࠳ࠗࡗࡕࡦ࠼⹜ᢱਛߦߪ㧘45.4r0.2 μg ߩࡎ࠙⚛߇฽߹ࠇߡ޿ࠆߎߣ߇್᣿ߒߚ‫ࠅࠃࠇߎޕ‬᳞߼ࠄࠇࠆ࠳ࠗࡗࡕ
ࡦ࠼⭯⤑ਛߩࡎ࠙⚛Ớᐲߪ 91020 atoms/cm3 ߢ޽ࠆ‫ޕ‬ ࿑ 1 ߦࡎ࠙⚛࠼࡯ࡊ࠳ࠗࡗࡕࡦ࠼ߩ࠼࠶ࡊ࡜࡯ᐢ߇ࠅࠬࡍࠢ࠻࡞ࠍ␜ߔ‫࠻ࠢࡍࠬޕ‬࡞ߪኻ⒓ߢ޽ࠅ㧘ᩭ෻ᔕߦࠃߞߡ↢ߓߚ෻〡 7*Li ߪ࠳ࠗࡗࡕࡦ࠼⭯⤑ਛߢ߶߷ቢోߦ
஗ᱛߔࠆߎߣࠍ␜ໂߔࠆ‫⸃ࠣࡦࠖ࠹࠶ࠖࡈߩ࡞࠻ࠢࡍࠬޕ‬ᨆࠃࠅ㧘ᷫㅦቯᢙ D ߪ 3.37
1012 s-1 ߣ޿߁୯ࠍᓧߚ‫ߩߎޕ‬୯ߪᚒ‫߇ޘ‬᷹ቯߒߚන૕⹜ᢱߩᷫㅦቯᢙߩਛߢᦨ߽ᄢ
߈ߊ(⴫ 1)㧘࠳ࠗࡗࡕࡦ࠼ਛߢߪ 7*Li ߇㕖Ᏹߦᒝߊᷫㅦߐࠇࠆߎߣ߇␜ߐࠇߚ‫ޕ‬
B060908
B/C on Si‫ ޓ‬㧔Iihara–1 chip)Counts per channel /10

3

30

–1

D=3.37 +– 0.01 (ps)20

B; 45.4 +– 0.2 Ǵ㨓

10

0

–10

0

10

Energy shift / keV

࿑ 1. ⒳‫ߩޘ‬න૕⹜ᢱߩᷫㅦቯᢙ D (ታ㛎୯ D
ߣ LSS ℂ⺰ߦࠃࠆ⸘▚୯ DLSS)‛⾰D (1012 s-1)

DLSS (1012 s-1)

B

2.57

2.54

Si

1.5

1.37

Fe

2.99

2.67

Co

3.02

2.88

࠳ࠗࡗࡕࡦ࠼
(ᧄ⎇ⓥ)

3.37r0.01

3.67

࿑ 1. ࡎ࠙⚛࠼࡯ࡊ࠳ࠗࡗࡕࡦ࠼ߩ
࠼࠶ࡊ࡜࡯ᐢ߇ࠅࠬࡍࠢ࠻࡞

Analysis of boron-doped diamond using Doppler broadening method of prompt gamma-rays
TAKAYAMA, T., SAKAI, Y., WATANABE, Y., KUBO, K., MATSUE, H., SEGAWA, M.

lévuª¢tT[ë

3P06
3P06
(

ùġē*nÝ**VĔÝ***)

qÓOnĐ*ÂÁx*dĝM**®¼â¨**³P***

1. #)!  Uðĕ¢ð!,/AG9"fÈj°/¢ðBID79j°2Ćlévĉ0/lév"

þ$ðĕ!Ę/ýà#b#òk!,.ýà0

·nh_tW/¢ðÅ+#lév#¢tT[ë2Ãi§Òv(¢6K7FLCAJ:5=ĩRCP)"á¸ĈvÙ"M/§¬"RCP !#¢ðĜę¸¿"ĀeNĚZ/'RCP "Î!

Ë¢tT[ë2Ãiÿv (Naturally Occurring Radioactive MaterialĩNORM)#²n¤ÍĊ"Ā¹¿!
,/Āe2p/§¬!#RCP(NORM)"á¸ĈvÙ#Ê¬Ýå#BID79lév!u'0/[ëb¯ ,%þ$ðĕ"ĂY2Ù×

2. Ģ  ă¤ -¢a0/ð2 HPGe ´ay MCA(CANBERRA)!,.b¯
4MeV-8192chÚjÏ 35ĥ/ĞÞ´±¿/OmÕðb¯(PGAJRR-3),% EPMA(JEOL)!,/[ëb¯2û

BID79lévă¤ÜĤ 2 äĠ

84I 2 äĠèÖè 1 äĠ5HLE 1 äĠ(ā 6 äĠ)ÌMølév/À?
<5 2 äĠ2Ò'PGA #[ë»"»č")õ÷gG>KÄ¾"[(ğ|Ñ)ã/ RCP "rMäĠÉ¦Û" Gd,Sm ¶Æă¤2b¯«`Ð"ă¤2AG
9;<5ÿ(U8)y!\0 HPGe Òă¤tµ!«`Ð"ă¤2 FEP @3IE!Ç PGA Òă¤EPMA #ċđ(50,000 rpm)!,.-0½º2ă¤ă¤-"Ēþ$ðĕ#ØöæYðĕÏ£2ÒĂY£"ą­S#

ICRP 74 !lév" 1 z"XÒĕ2ĂYėþ$ðĕ2ça3. í°o%ó  BID79lév#1 äĠ"ÜĤ2ě ] - Th,% U ê

224c"²ä´a0NORM ÿvèÖè"»¢ô©*ģ Ra ²ä"sā# 32 Bq/g ¡0¢ü"2u( 224Ra "ę¸¿"ĀeNĚZ 10 Bq/g #Č/NORM ÿv/)²n¤"ĀeZĦ{Wħ370 Bq/g RN PGA !,/b¯-BID79lév]!

ģÉ(7ī600 ppm)!u'0!*Gd  Sm " 2 [ëQ[ë!»&ă¤O" Gd/Sm É»#rlév"Õ[Ô1-MM¥»čÌMø}n¤/ó?<5 2 äĠ RCP 2 äĠ#Ô-0/À/ Gd/Sm »]BID79lév!Ãi0/¢ðÅ#Gd,Sm 2ć!u(}ĠĖÜ.]ÿď[!_Ď/ó
EPMA !,/b¯/-#ĨNa, Al, Si, K, Ti, Cr, Fe, Zn, Zr, Nd, Yb-0/

"[ë"~ßĄ0

84I5HLEèÖè" 3 äĠ"lév#îïXÒ!,.Øö"ìñæYðĕM
ø^ú"ĚZ 50ĪSv/y 2ČĂY0BID79j°2Ćlév#RCP á¸ĈvÙ&/àw0
Radioisotopes in cosmetics.
FURUTA,E.,NAKAHARA,H.,OURA,Y.,HATSUKAWA,Y.,MATSUE,H,SAKANE,H.

3P07
3P07

੝㋦ᰳਲೋᦼߦ߅ߌࠆࡑ࠙ࠬ⢄⚦⢩ਛߩᓸ㊂ర⚛Ớᐲߩᄌൻ(㕒ጟᄢℂ) ٤᧛᧻⥶㧘਄ፉᷕᘏ㧘Ꮉፉ⟤ᥓሶ㧘ጊ㊁༑㧘
⩲ᴧ⧷ᄦ㧘㊁ญၮሶ㧘⍫᳗⺈ੱ‫ ޤ⸒✜ޣ‬ᚒ‫⎇ߩߢ߹ࠇߎߩޘ‬ⓥ⚿ᨐࠃࠅ‫ޔ‬3 ㅳ㑆੝㋦ᰳਲ㙄ࠍਈ߃ߚࡑ࠙ࠬ㧔3 ㅳࡑ࠙ࠬ㧕ߩ⢄⚦⢩ᚑಽਛߩర⚛ỚᐲࠍᱜᏱࡑ࠙ࠬߩߘࠇߣᲧセߔࠆߣ‫ߢߤߥ࡞࠱࠻ࠗࠨޔ‬੝㋦Ớᐲ߇ᷫዋߒ‫⚦ߩߡోޔ‬⢩ᚑಽߦ߅޿ߡࠦࡃ࡞࠻Ớᐲ߇Ⴧടߔࠆߣ޿߁ߎߣ߇ࠊ߆ߞߡ޿ࠆ‫ࠇߎޕ‬ࠃࠅೋᦼߩᲑ㓏ߦ߅޿ߡߪ‫ޔ‬⢄⤳ో૕ߢߪࠦࡃ࡞࠻Ớᐲߩߺߦᄌൻ߇⷗ࠄࠇࠆ‫⚦ޔߒ߆ߒޕ‬⢩ᚑಽਛߢߪೋᦼᲑ㓏ߦ߅޿ߡ߽‫࠻࡞ࡃࠦޔ‬એᄖߩర⚛Ớᐲߦ߽ᄌൻ߇⷗ࠄࠇࠆߩߢߪߥ޿
߆ߣ⠨߃ࠄࠇࠆ‫ޕ‬ߘߎߢ‫⎇ᧄޔ‬ⓥߢߪ੝㋦ᰳਲߩೋᦼᲑ㓏ߦ⌕⋡ߒ‫ޔ‬੝㋦ߥߤߩᓸ㊂ర⚛ߣ⚿วߒߡ޿ࠆ࠲
ࡦࡄࠢ⾰ࠍᄙߊ฽߻⢄⤳ߩ⚦⢩ᚑಽਛߦ߅ߌࠆర⚛Ớᐲߩቯ㊂ࠍⴕߞߚ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬ICR ♽㓶ࡑ࠙ࠬ 8 ㅳ㦂ࠍ 2 ⟲ߦಽߌ‫৻ޔ‬ᣇߦߪ੝㋦ᰳਲ㙄‫ઁޔ‬ᣇߦߪኻᾖ㙄ࠍਈ
߃ 1 ㅳ㑆㘺⢒ࠍⴕߞߚ㧔1 ㅳࡑ࠙ࠬ㧕‫ߩࠇߙࠇߘޕ‬⢄⤳ࠍ៰಴ߒ‫ޔ‬㆙ᔃಽ㔌ᴺߦࠃࠅ‫ޔ‬㕖⎕უ⚦⢩‫ޔ‬ᩭ‫ ߩ࡞࠱࠻ࠗࠨޔࡓ࡯࠰ࡠࠢࡒޔࡓ࡯࠰࠰࡝ޔࠕ࡝࠼ࡦࠦ࠻ࡒޔ‬6 ߟߩ↹ಽߦಽ㔌ߒߚᓟ‫ޔ‬ᯏེਛᕈሶ᡼኿ൻಽᨆᴺߦࠃࠅฦ⹜ᢱਛߩర⚛Ớᐲࠍቯ㊂ߒߚ‫ޕ‬ ߹ߚ‫ޔ‬ᄙߊߩ࠲ࡦࡄࠢ⾰ࠍ฽߻ߎߣ߇⍮ࠄࠇߡ޿ࠆࠨࠗ࠻࠱࡞ߦߟ޿ߡߪ‫ޔ‬㆙ᔃಽ㔌ᴺߦ
ࠃࠅಽ㔌ߒߚᓟ‫ޔ‬SDS-PAGE ߅ࠃ߮ੑᰴర㔚᳇ᵒേᴺߦࠃࠅ‫ߩ⾰ࠢࡄࡦ࠲ޔ‬ಽ㔌ࠍⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐ㨯⠨ኤ‫ ޤ‬⢄⚦⢩ᚑಽਛߩర⚛Ớᐲቯ㊂⚿ᨐߩ৻଀ߣߒߡ‫ޔ‬1 ㅳࡑ࠙ࠬߩࠨࠗ࠻࠱࡞ߦ
ߟ޿ߡߩ⚿ᨐࠍ࿑ߦ␜ߒߚ‫࠻࡞ࡃࠦޔߡ޿߅ߦ࡞࠱࠻ࠗࠨޕ‬Ớᐲߦߟ޿ߡߪ੝㋦ᰳਲ⟲ߢኻᾖ⟲ߣᲧߴߡỚᐲߩჇട߇⷗ࠄࠇߚ‫ޔߒ߆ߒޕ‬3 ㅳࡑ࠙ࠬߢߪỚᐲᄌൻߩ⷗ࠄࠇߚ੝㋦Ớᐲߥߤ‫ߩઁޔ‬ర⚛Ớᐲߦߟ޿ߡߪᄌൻ߇⷗ࠄࠇߥ߆ߞߚ‫ࠄ߆ߣߎߩߎޕ‬੝㋦ᰳਲ⁁ᘒߦ߅޿ߡ
੝㋦ᰳਲߩೋᦼᲑ㓏ߦ߅޿ߡߪ‫࡞ࡃࠦޔ‬࠻߇㑐ਈߔࠆ૗ࠄ߆ߩᯏ᭴߇௛޿ߡ޿ࠆ
ߣ޿߁ߎߣ߇⠨߃ࠄࠇࠆ‫ޕ‬ ߹ߚ‫ޔ‬SDS-PAGE ෸߮‫ޔ‬ੑᰴర㔚᳇ᵒേࠍⴕߞߚ⚿ᨐ‫ޔ‬ਔ⟲㑆ߢ࠲ࡦࡄࠢ⾰ࡃࡦ࠼෸߮‫߿⃻⊒ߩ࠻࠶ࡐࠬޔ‬ᶖᄬߪ⷗ࠄ
ࠇߥ߆ߞߚ‫ࠄ߆ߣߎߩߎޕ‬੝㋦ᰳਲߩೋᦼᲑ㓏ߦ߅޿ߡߪ‫ޔ‬੝㋦ᰳਲߦࠃࠆ࠲ࡦ
ࡄࠢ⾰ߩ⊒⃻߿ᶖᄬߩน⢻ᕈߪૐ޿ߣ⠨߃ࠄࠇࠆ‫ޕ‬Ớᐲ / (µg / g ⢄⤳) ߪ੝㋦Ớᐲ߇ᷫዋߔࠆࠃࠅ߽వߦࠦࡃ࡞࠻Ớᐲ߇Ⴧടߔࠆߣ޿߁ߎߣ߇ࠊ߆ߞߚ‫ޔࠅࠃࠇߎޕ‬

103
102
101

 ੝㋦ᰳਲ⟲
 ኻᾖ⟲

100
10-1
10-2
10-3

Na Mg Cl Mn Fe Co Cu Zn Se Rb
࿑ ᯏེਛᕈሶ᡼኿ൻಽᨆߦࠃࠅቯ㊂ߒߚࡑ࠙ࠬ⢄⤳ࠨࠗ࠻࠱࡞ਛߩర⚛Ớᐲ

Change of concentrations of trace elements in hepatocyte of mice at early stage of zinc deficiency
MURAMATSU, W., KAMISHIMA, J., KAWASHIMA, M., YAMANO, Y., SUGANUMA, H.,
NOGUCHI, M., YANAGA, M.

3P08
3P08

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X-ray fluorescence analysis of trace elements in standard materials by SAGA-Light Source
KAWAMURA, H., TAGOMORI, H., MATSUOKA, N., SUMITANI, K., ISHIJI, K., OKAJIMA, T.

3P09
3P09

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Ħ0.39Bq/L -ģ<·ę×  ģ&Á»µdĿĹŁľ ))ġL0äÓÌą¡ ģTFWT &

TBT Ä ³čÚġNe0äą¡ 8ĕâĆ/C:ð«+-ģu´ HTO »µĶĽĴīĺÄ ģØĝ ,ċĜGy./. ģÄPĕþ! òĖĄH'rãĵŁĪĳ.
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Tritium dynamics in the environmentĤCase study at Kagoshima PrefectureĤ
KAWAMURA, H., TAMARI, T., MATSUOKA, N., IKENOHIRA, T., SHIRASAKA, K. and TOMO, N.

3P10
3P10

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AMS Method for determination of I-129 in environmental samples
KAWAMURA, H., TAMARI, T., MATSUOKA, N., KAKIUCHI, H., AKATA, H., UEDA, S.

3P11
3P11

AMSࠍ↪޿ߚᣣᧄฦ࿾ߩ࿯ფਛ129IỚᐲಽᨆ㧔ቇ⠌㒮ᄢℂ1㧘᧲ᄢᎿ2㧘᡼ක⎇3㧕٤㜞↰ࠁ߆ࠅ1‫᧻᧛ޔ‬ᐽⴕ1‫᧻ޔ‬ፒ
ᶈਯ2‫ޔ‬ศ↰⡡3‫ޤߦ߼ߓߪޣ‬129

Iߪ⥄ὼ⇇ߢߪXeߣቝቮ✢ߩ෻ᔕߢ↢ᚑߐࠇߡ޿ࠆ‫৻ޕ‬ᣇੱᎿ⊛ߦߪ‫ޔ‬ᩭታ㛎ߩ㓙߿‫↪૶ޔ‬ᷣߺᩭΆᢱౣಣℂߩ㓙ߦ↢ᚑߐࠇ‫ޔ‬ᓸ㊂ߢ޽ࠆ߇ᄢ᳇ਛߦ᡼಴ߐࠇߡ޿ࠆ‫ੱߪ⚛࡛࠙ޕ‬૕ߢߪ↲⁁⣼ߦỚ❗ߐࠇࠆߩߢ‫ޔ‬ⅣႺਛߩỚᐲࠍ⺞ߴࠆߎߣߪⅣႺ቟ోߩⷞὐ߆ࠄ㊀ⷐߢ޽ࠆ‫ޕ‬ߘߎߢ‫ޔ‬ᣣᧄฦ࿾ߢណขߒߚ࿯ფਛߩ 129I/127IᲧࠍᬌ಴ᗵᐲߦఝࠇߚAMS(Accelerator Mass
Spectrometry)ࠍ↪޿ಽᨆߒߚ‫ߚ߹ޕ‬቟ቯᩭ⒳ߢ޽ࠆ127IỚᐲࠍICP-MSߢ᷹ቯߒߚ‫ޕ‬ᣣᧄฦ࿾ߩ
࿯ფਛߩ129Iߩಽᨆ⚿ᨐߩ৻ㇱߪߔߢߦႎ๔ߒߡ޿ࠆ߇‫੹ޔ‬࿁ߪ‫᧲ޔ‬ᶏ᧛๟ㄝ‫ࡩ౐߮ࠃ߅ޔ‬ᚲ᧛๟ㄝߥߤߩ࿯ფߦߟ޿ߡߩ⚿ᨐ߽ᓧࠄࠇߡ޿ࠆߩߢ‫ࠍࠄࠇߘޔ‬฽߼⊒⴫ߔࠆ‫ޕ‬‫ޣ‬᷹ቯᣇᴺ‫ޤ‬࿯ფࠨࡦࡊ࡞ࠍ 0.5g⒟ᐲΆ὾ࡏ࡯࠼ߦ㊂ࠅขࠅ⍹⧷▤ਛߢ⚂ 1000͠ߦടᾲߒߚ‫ߢߎߘޕ‬ើ⊒ߒߡ߈ߚ࡛࠙⚛ࠍࠕ࡞ࠞ࡝ṁᶧߢ᝝㓸ߒߚ‫ߩߎޕ‬ṁᶧߩ৻ㇱࠍ೎ㅜߣࠅࠊߌ‫ޔ‬ㆡቱᏗ㉼ߒ
ICP-MSߢ127IỚᐲࠍ᷹ቯߒߚ‫ࠍ⚛࡛࠙ޕ‬᝝㓸ߒߚṁᶧߩᄢㇱಽߪ129I/127IᲧ᷹ቯߩߚ߼ࠠࡖ࡝ࠕ
࡯5mgࠍട߃ߡṁᇦ᛽಴࡮ㅒ᛽಴ࠍⴕߞߚ‫࡞ࡊࡦࠨߚߒ⵾♖ޕ‬ṁᶧߪỚ❗ᓟ‫㉄⎣ޔ‬㌁ࠍട߃ߡ࡛࠙ൻ㌁ߩᴉᲚࠍ૞ࠅ‫࡛࠙ߚߒ῎ੇޕߚߖߐ῎ੇޔ‬ൻ㌁ࠍࠞ࠰࡯࠼ߦ⹣߼ߡ‫ޔ‬AMSߢ129I/127IᲧࠍ᷹ቯߒߚ‫ޕ‬ICP-MSߦࠃߞߡᓧࠄࠇߚ127IỚᐲߣAMSࠍ↪޿ߡ᷹ቯߒߚ129I/127IᲧࠍ↪޿ߡ⹜ᢱਛߩ129IỚᐲࠍ▚಴ߒߚ‫ޕ‬‫⚿ޣ‬ᨐ‫ޤ‬ᩭΆᢱౣಣℂᣉ⸳ߩߥ޿৻⥸⊛ߥ࿾ၞߩ129IỚᐲߪ 1.4 ×10-5 ޯ2.0 ×10-3 Bq/kgߢ‫ޔ‬129I/127IᲧ
ߪ 3.9 ×10-11ޯ3.0 ×10-8ߢ޽ߞߚ‫ޔߚ߹ޕ‬࿯࿾ߩ೑↪ᒻᘒ೎ߩ127IỚᐲߩᐔဋ୯ߪ‫ޔ‬᫪ᨋ߇
37ppm‫ ߇⇌ޔ‬28ppm‫ޔ‬᳓↰߇ 3.6ppmߢ‫ޔ‬᫪ᨋ㧪⇌㧪᳓↰ߣ޿߁㗅ߢ޽ߞߚ‫ޕ‬᫪ᨋߪ⴫㕙Ⓧ߇
ᄢ߈޿ߚ߼‫ޔ‬᮸౰⴫㕙ߦߟ޿ߚᄢ᳇ਛߩ࡛࠙⚛߇㔎ߣߣ߽ߦ࿾⴫ߦ⪭ߜ‫ޔ‬Ớᐲ߇㜞ߊߥߞߚ߽ߩߣ⠨߃ࠆ‫৻ޕ‬ᣇ᳓↰ߪ‫ޔ‬Ḗ᳓ߔࠆߎߣߢ࿯ფਛߩㆶర⁁ᘒ߇ㅴߺ‫⚿ߩߘޔ‬ᨐ࿯ფਛߩ࡛
࠙⚛߇᳓ߦṁߌ಴ߒ࡛࠙⚛Ớᐲ߇ૐߊߥߞߚߣផ᷹ߔࠆ‫ߚ߹ޕ‬ᷓᐲ೎ߩỚᐲ߽᷹ቯߒߚߣߎ
ࠈ‫ޔ‬129Iߪ࿯ფ⴫ጀߦๆ⌕ߐࠇߡ޿ࠆߎߣ߇ࠊ߆ߞߚ‫ޕ‬㕍᫪⋵ߢណขߒߚ࿯ფ⹜ᢱਛߩ129IỚᐲߦߟ޿ߡ߽᷹ቯߒߚ‫⚿ߩߘޕ‬ᨐ‫ࡩ౐ޔ‬ᚲ᧛ߢߪ129IỚᐲߪ 2.710-3Bq/kg‫ޔ‬129I/127IᲧߪ 3.210-8‫ޔ‬߻ߟᏒߢߪߘࠇߙࠇ 7.3×10-4Bq/kg‫ޔ‬4.510-9‫᧲ޔ‬ㅢ᧛ߢߪߘࠇߙࠇ 5.4×10-4Bq/kg‫ޔ‬1.910-9ߢ޽ߞߚ‫ߩࠄࠇߎޕ‬୯ߪ‫ޔ‬ᣣᧄߩ৻⥸⊛ߥ࿾ၞߢᓧࠄࠇߚ▸࿐ߦ߶߷౉ࠆ‫⨙ޕ‬ၔ⋵᧲ᶏ᧛ߦ޽
ࠆᩭΆᢱౣಣℂᣉ⸳߆ࠄߩ〒㔌೎ߦᢙ࿾ὐߩ࿯ფࠨࡦࡊ࡞ࠍណขߒߡ129IỚᐲࠍ᷹ቯߒߚ‫ߎޕ‬ࠇࠄߩࠨࡦࡊ࡞ਛߩ129IỚᐲߪઁߩ࿾ၞߣᲧߴߡ㜞޿௑ะߦ޽ߞߚ‫⃻ߪ࠲࡯࠺޿ߒ⹦ޕ‬࿷ᢛℂਛߢ޽ࠅ‫⚿ޔ‬ᨐߪࡐࠬ࠲࡯ߢႎ๔ߔࠆ‫ޕ‬
Determination of 129I in soil samples collected from various places in Japan by AMS
TAKADA, Y., MURAMATSU, Y., MATSUZAKI, H., YOSHIDA, S.

AMS 䉕↪䈇䈢㐳ඨᷫᦼᩭ⒳ 36Cl 䈱ቯ㊂
㵪36Cl-AMS ⹜ᢱಣℂ䈮䈍䈔䉎⎫㤛㒰෰ᠲ૞䈱ᬌ⸛㵪

3P12
3P12

䋨╳ᵄᄢᢙℂ‛⾰ 1䋬╳ᵄᄢ↢๮ⅣႺ 2䋬᧲ᄢᎿ 3䋬╳ᵄᄢᔕ↪ടㅦེ 4䋩٤₹ℂ⟤ᥓሶ 1㧘ᧃᧁ໪੺ 1㧘ᚭፒ⵨⾆ 2㧘᧻྾㓶㛉 3㧘㜞ᯅദ 4㧘╣౏๺ 1㧘㐳ፉᵏᄦ 4‫ޣ‬ᐨ⺰‫ޤ‬Ⴎ⚛ߩ᡼኿ᕈห૏૕ߢ޽ࠆ 36Cl㧔ඨᷫᦼ㧦3.01 × 105 ᐕ㧕ߪᄢ᳇ਛߢߪਥߦቝቮ✢ߦ
ࠃࠆ 40Ar ߩᩭ⎕⎈෻ᔕߢ↢ᚑߒ㧘ⅣႺਛߦᐢߊሽ࿷ߒߡ޿ࠆ㧚ㄭᐕ㧘36Cl ߩ᷹ቯߦߪടㅦེ
⾰㊂ಽᨆᴺ㧔AMS㧕߇↪޿ࠄࠇߡ޿ࠆ㧚AMS ᷹ቯߢߪ㧘36Cl ߩห㊀૕ߢ޽ࠆ 36S ߩሽ࿷߇ᅹ
ኂ࿃ሶߣߥࠆߚ߼㧘⎫㤛ߩᄙ޿⹜ᢱ㧔଀߃߫㧘࿯ფߥߤ㧕ߪ⹜ᢱಣℂߩᲑ㓏ߢ⎫㤛ࠍߢ߈ࠆ㒢ࠅขࠅ㒰޿ߡ߅ߊᔅⷐ߇޽ࠆ㧚⎫㤛㒰෰ᠲ૞ߣߒߡ㧘⎣㉄ࡃ࡝࠙ࡓߩᷝടߦࠃࠅ⎫㉄ࠗࠝࡦࠍ⎫㉄ࡃ࡝࠙ࡓᴉᲚߣߒߡขࠅ㒰ߊᣇᴺ㧔એਅ BaSO4 ᴺ㧕߇৻⥸ߦ↪޿ࠄࠇߡ޿ࠆ[1]㧚ߒ߆ߒ㧘BaSO4 ᴺߢߪ㧘BaSO4 ᴉᲚ↢ᚑߩߚ߼ߩട᷷ߦ㐳ᤨ㑆ࠍⷐߒ㧘߹ߚᦨ⚳⊛ߥ AgCl ߩ෼₸߇ૐਅߔࠆߣ޿߁໧㗴߇޽ࠆ㧚߹ߚ㧘࿯ფߦᄙߊ฽߹ࠇࠆ᦭ᯏ⎫㤛ߥߤ㧘⎫㉄ࠗࠝࡦߢߥ
޿ᒻߩ⎫㤛ࠍ㒰෰ߔࠆߎߣߪߢ߈ߥ޿㧚ᧄ⎇ⓥߢߪ㧘BaSO4 ᴺߦઍࠊࠆᚻᴺߣߒߡ㧘BaCO3
ߦࠃࠆ SO42−ߩ౒ᴉࠍ೑↪ߒߚᣇᴺ߿㒶ࠗࠝࡦ੤឵᮸⢽ࠍ↪޿ߚᣇᴺࠍ⠨᩺ߒ㧘35S ߩ࠻࡟࡯ࠨ࡯ታ㛎ߦࠃߞߡ⎫㤛㒰෰ߩน⢻ᕈࠍᬌ⸛ߒߚ㧚ߎߎߢߪ㧘㒶ࠗࠝࡦ੤឵᮸⢽ࠍ↪޿ߚᣇᴺߦߟ޿ߡㅀߴࠆ㧚‫ޣ‬ታ㛎‫ࡦࠝࠗޤ‬੤឵᮸⢽ߪᒙႮၮᕈ㒶ࠗࠝࡦ੤឵᮸⢽ (AG4-X4) ߣᒝႮၮᕈ㒶ࠗࠝࡦ੤឵᮸
⢽ (DOWEX 1-X4) ߩ 2 ⒳㘃ࠍ↪޿ߚ㧚ࠨࡦࡊ࡞ṁᶧߦ࠻࡟࡯ࠨ࡯ߣߒߡ Na235SO4 ᳓ṁᶧࠍ
10 kBq ട߃㧘ṁᶧࠍ㉄ᕈߦߔࠆ႐วߦߪỚ⎣㉄ࠍട߃ߚ㧚᮸⢽㧘੤឵૕㧘ṁ㔌೷ߩ᧦ઙࠍᄌ
߃ߡታ㛎ࠍⴕߥ޿㧘ṁ಴ᶧࠍಽ↹ߒߡᶧ૕ࠪࡦ࠴࡟࡯࡚ࠪࡦࠞ࠙ࡦ࠲࡯ߢ᷹ቯߒ㧘35SO42−ߩṁ಴૏⟎ࠍ⺞ߴߚ㧚߹ߚ㧘ṁ಴ᶧߦ AgNO3 ࠍṢਅߒߡ㧘Cl−ߩṁ಴૏⟎߽⏕⹺ߒߚ㧚‫⚿ޣ‬ᨐ‫ޤ‬ᄙߊߩ᧦ઙߦ߅޿ߡ 35SO42−ߣ Cl−ߩṁ80

NaNO3 ߣߒߚ᧦ઙߩߺࡇ࡯ࠢ૏⟎ߦᏅ߇⃻ࠇߚ㧚ߎߩṁ㔌ᦛ✢ࠍ Fig. 1 ߦ␜ߔ㧚ߎߩᣇᴺࠍ↪޿ࠆߣ㧘ṁᶧਛߩ⎫㉄ࠗࠝࡦߩ⚂ 70%ࠍ㒰෰ߢ߈ࠆ㧚 ߹ߚ㧘ࠗࠝࡦ੤឵᮸⢽ࠍ↪޿ࠆߎߣߦࠃࠅ㧘⎫㉄ࠗࠝࡦߢߥ޿ᒻߩ⎫㤛ߪ᮸⢽਄ㇱߦᱷࠆ߆ๆ⌕ߐࠇߕߘߩ߹߹ᵹ಴ߒߡࠨࡦࡊ࡞߆ࠄขࠅ
㒰߆ࠇࠆߎߣ߇ᦼᓙߐࠇࠆ㧚ߎߩᣇᴺࠍ࿯ფߩ
36

Cl-AMS ⹜ᢱಣℂ䈮䈍䈇䈩⹜䉂䈢䋮ID
IDofof column
column ::30
30 mm
mm
resin
resin volume
volume::20
20 ml
ml
type
type ::NO
NO33
samplesample ::33 ml,
ml, pH2
pH2
eluent:0.5M
eluent : 0.5M NaNO
NaNO3

0.5 M NaNO3

60

35

ࡦ੤឵᮸⢽ߢ੤឵૕ࠍ NO3 ᒻߦ㧘ṁ㔌೷ࠍ

Activity ratio of S (%)಴ࡇ࡯ࠢߪቢోߦ৻⥌ߒߚ߇㧘ᒝႮၮᕈ㒶ࠗࠝ

40

3

Sample solution

٤ AgCl

20
0

0

20

40

60

80

Effluent weight (g)Fig. 1. Elution curve of a strong base anion-exchange

resin (DOWEX 1-X4).

‫ޣ‬ෳ⠨ᢥ₂‫ޤ‬[1] Y. Nagashima et al., Nucl. Inst. and Meth. B 172 (2000) 129–133
Determination of a long-lived radionuclide 36Cl by AMS–study of sulfur reduction process in 36Cl-AMS sample preparation–
TAMARI, M., SUEKI, K., TOSAKI, Y., MATSUSHI, Y., TAKAHASHI, T., SASA, K., NAGASHIMA, Y.

3P13
3P13

ᄢ᳇ਛࠢ࡝ࡊ࠻ࡦߩಽ㔌᝝㓸ⵝ⟎ߩ⵾૞(਻ᄢℂ) ٤੗਄ผ჻‫⊖ޔ‬ፉೣᐘ‫᧖ޔ‬ේ⌀ม‫ޔ‬೨↰☨⬿‫ޔ‬᎑↰⚐‫⼱ޔ‬ญ⌀ੱ ࠢ࡝ࡊ࠻ࡦߪᄢ᳇ਛߦ 1.4ppmሽ࿷ߔࠆᏗࠟࠬߢ޽ࠅ‫ޔ‬࿾⃿਄ߦሽ࿷ߔࠆ᳇૕ߩਛߢ
ᦨ߽㊂߇ዋߥ޿᳇૕ߢ޽ࠆ‫ޔߚ߹ޕ‬ⅣႺਛߦሽ࿷ߔࠆ᡼኿ᕈᏗࠟࠬߩਛߢ‫ޔ‬㊀ⷐߥᩭ⒳ߣߒߡ85Kr߇޽ࠆ‫ߩߎޕ‬85Krߪ‫ޔ‬ਥߦᩭΆᢱߩౣಣℂߦࠃߞߡᄢ᳇ਛ߳᡼಴ߐࠇࠆ‫ޕ‬ඨᷫᦼߪ 10.76 ᐕߢ޽ࠅ‫ޔ‬0.687MeVߩǪ✢ࠍ᡼಴ߒߡǪუᄌߒ‫ޔ‬85Rbߦߥࠆ‫ޕ‬⃻࿷‫ߩࡦ࠻ࡊ࡝ࠢޔ‬ಣℂߩᣇᴺߦߪ㜞࿶ࡏࡦࡌߦ⾂⬿ߔࠆߣ޿߁߽ߩߒ߆ߥ޿‫ߒޕ‬߆ߒ‫ޔ‬ඨᷫᦼ߇㐳޿ߚ߼⾂⬿ߒߡ߽ᷫ⴮㊂߇ዋߥߊ‫⚿ޔ‬ᨐ⊛ߦ᡼಴Ớᐲࠍ⋙ⷞߒߥ߇ࠄߩᏗ㉼᡼಴ߩ߶߁߇ෂ㒾ᕈ߇ዋߥ޿ߣ್ᢿߐࠇߡ޿ࠆ‫ޕ‬85Krߪᶏᵗߦߪ߶ߣࠎߤๆ
෼ߐࠇߥ޿ߚ߼‫ޔ‬᡼኿უᄌએᄖߩᄢ᳇ਛߢߩ㒰෰ㆊ⒟ߪሽ࿷ߖߕ‫ޕ‬᡼಴㊂߇᡼኿უᄌ
㊂ࠍ⿥߃ࠆߣᄢ᳇ਛߦ⫾Ⓧߒ‫ޔ‬ታ㓙ߦᄢ᳇ਛߩỚᐲߪᓢ‫ߦޘ‬Ⴧടߒߡ޿ࠆ‫ޕ‬࿾⃿ో૕ߢߪ‫ ߘࠃ߅ޔ‬4000PBqߩ85Kr߇ᄢ᳇ਛߦ޽ࠆߣផቯߐࠇ‫ੱޔ‬ὑ⿠Ḯߩ᡼኿ᕈᩭ⒳ߣߒ
ߡߪⅣႺਛߢߩሽ࿷㊂ߪᦨᄢߣ⠨߃ࠄࠇߡ޿ࠆ‫ޕ‬ ᄢ᳇ਛࠢ࡝ࡊ࠻ࡦߩ85KrߩỚᐲߪᓢ‫ߦޘ‬Ⴧടߒߡ޿ࠆ‫ޔߪࠇߎޕ‬ᩭታ㛎߿ᩭΆᢱߩ
ౣಣℂߦࠃߞߡ⛮⛯⊛ߦᄢ᳇ਛߦ᡼಴ߐࠇߡ޿ࠆ߆ࠄߢ޽ࠆ‫ޕ‬85Krߪᄢ᳇ߩ⒖ᵹ᜛ᢔ
ߦ઻ߞߡ࿾⃿ో૕ߦ᜛߇ࠆߚ߼‫ޔ‬ᄢⷙᮨߥᄢ᳇ᓴⅣ࠻࡟࡯ࠨߣߒߡᵈ⋡ߐࠇߡ޿ࠆ‫ޕ‬߹ߚ‫ޔ‬᡼኿ᕈࠢ࡝ࡊ࠻ࡦߩోߡ߇ੱᎿ⿠Ḯߢ޽ࠆߎߣࠍ↪޿ߚේሶജᣉ⸳ߩᓇ㗀⹏ଔ࡮᳓ߦṁ⸃ߒߡ޿ࠆࠢ࡝ࡊ࠻ࡦߩห૏૕Ყࠍ↪޿ߚ⥄ὼ᳓ṛ⇐ᤨ㑆ߩ᳿ቯߥߤߩᚻ
Ბߣߒߡ߽ᵈ⋡ߐࠇߡ޿ࠆ‫ޕ‬ ߎߩࠃ߁ߦ‫ޔ‬ᄢ᳇ਛࠢ࡝ࡊ࠻ࡦߦߟ޿ߡߩ⎇ⓥߪߣߡ߽᦭↪ߢ޽ࠆ‫ߚ⑳ޔߢߎߘޕ‬ߜߪᄢ᳇ਛࠢ࡝ࡊ࠻ࡦߩಽ㔌᝝㓸ⵝ⟎ߩ⵾૞ࠍ⋡⊛ߣߒߡ⎇ⓥࠍⴕߞߡ޿ࠆ‫ޔߕ߹ޕ‬᷹ቯߦ↪޿ࠆࡃࠗࠕ࡞࡮ࠠࡖ࠶ࡊߩᬌቯࠍⴕߞߚ‫⚿ߩߘޕ‬ᨐ‫ࡦࡠࡈ࠹ߪࡦ࠻ࡊ࡝ࠢޔ‬ࡃࠗࠕ࡞ߦ߅޿ߡᄖㇱߦṳࠇߡ޿ࠆߎߣ߇ࠊ߆ߞߚ‫ޕ‬ᰴߦછᗧ㊂ߩⓨ᳇࡮ࠢ࡝ࡊ࠻ࡦ
Pumpࠍዉ౉ߔࠆߎߣߦࠃߞߡ‫ޔ‬ᄢ᳇He
TCDਛࠢ࡝ࡊ࠻ࡦߩಽ㔌ߦ↪޿ࠆ
Heࠟࠬࠢࡠࡑ࠻ࠣ࡜ࡈߩࠞ࡜ࡓ
ߩ⒳㘃‫ޔ‬ዷ㐿᷷ᐲߩᬌቯࠍⴕߞ Dust filter
Scintillatorߚ‫ߩ⟎ⵝޕ‬᭎⇛࿑ࠍ࿑ 1.ߦ␜ߔ‫ޕ‬
Pump૶↪ߔࠆࠞ࡜ࡓࠍ᳿ቯߒߚᓟ‫ޔ‬ታ㓙ߦᄢ᳇ࠍዉ౉ߒߡࠢ࡝ࡊ
Flow meter࠻ࡦߩ᝝㓸ࠍⴕߞߚ‫৻ޕ‬ㅪߩ⎇ColumnVial
Molecular Charcoal
sieve trap
trapⓥߩ⚿ᨐࠍ⸛⺰ળߦ߅޿ߡ⊒⴫ߔࠆ‫                ޕ‬࿑ 1. ಽ㔌᝝㓸ⵝ⟎ߩ᭎⇛࿑
Producing an apparatus to separate and to collect krypton in the atmosphere
INOUE, F.

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3P14
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2Hirose, A., Inoue, F., Sugihara, S., Momoshima, N., Maeda, Y., Satake, H.                 

3P15
3P15

ステンレススチール表面からの HT、CH3T およびCH4 発生傾向に及ぼすトリチウム浸透方法の影響（東大 RI センター1、現・静岡大放射研 2）○桧垣 正吾 1, 大矢 恭久 1,2, 巻出 義紘 1

[MBq / mmol][MBq / mmol]

ステンレススチール（SS）同士の衝突・衝撃等により原因不明のメタン発生の起きることが知られている。その発生過程を解明するために、トリチウム（T）をトレーサーとして利用
し、SS 製小球の入った SS 製容器を振って衝撃を与え、同現象をシミュレートした。これまで、加熱のみにより SS 内部に T を浸透させた（以下、Thermal 法と呼ぶ）容器での結果を報告してきた。今回は、加熱のみならず同時に衝撃を与えることで、T を SS 内部に浸透させた（以下、Mechanical 法と呼ぶ）容器を新たに作成して、同現象をシミュレートした。先に報告した Thermal 法により作成した容器での結果と比較することで、T の浸透方法の違いが、衝撃による SS からの気体発生傾向に及ぼす影響を調べた。
実験には、SS316 製球（直径 3mm）を約 1800 個入れた全 SS316 製容器（内容積 50ml）を用いた。容器には、9.1MBq の T2 ガスを導入した。Thermal 法では容器全体を 120℃に 46 時
間加熱のみ行ったが、Mechanical 法では 120℃に 46 時間加熱しながら、そのうちの 24 時間（240回／分）シェーカーで振って SS 内部に T を浸透させた。Thermal 法では 4.7MBq の T が SS
内部に浸透したのに対して、Mechanical 法では 2.2MBq の T が SS 内部に浸透し、3.0MBq のCH3T および 2.9×10-6mol の CH4 が容器中に発生した。
以上の方法により作成した、T を浸透させた SS 容器を高真空に排気した後、ヘリウム 15kPaを導入した。全体を 30 分間の加熱（70℃、120℃あるいは室温のまま）後、15 分間振って SSに衝撃を与えた。容器内に発生する CH3T、および共に発生する HT を低温捕集し、ガスフロー型比例計数管を用いたラジオガスクロマトグラフにより分離定量した。同時に発生する
4CH4 は、ガスクロマトグラフ／FID 検出器
10(a)で定量した。測定後の容器は高真空に排Thermal3
気し、新たにヘリウムを導入して、同じ
10
容器で 1 日 3 回の実験を繰り返した。
2
Fig.1 に、Thermal 法および Mechanical10法により T を浸透させた SS 容器から衝撃1により発生したメタンの比放射能を示す。
10
1
10
20
Thermal 法では実験を繰り返してもほぼDay一定であるのに対して、Mechanical 法で410は徐々に減少する傾向がみられた。また、(b)Mechanical
CH3T の HT に対する発生量の比は、いず
310れの方法により T を浸透させた容器でも、実験を繰り返すことによる変化はほとん
210
どみられなかった。これらのことから、
Thermal 法により T を浸透させた場合で
1
10は、SS 内部での H に対する T の深さ方向
1
10
20
Day
への分布は変化が少ないと考えられた。
その一方で、Mechanical 法により T を浸 Figure 1. Specific ratio activity of the emitted methane.
(a) Injected tritium by Thermal method.
透させた場合では、SS 内部での H に対(b) Mechanical method.
する T の深さ方向への分布は、表面近く◆: Room Temp., ●: 70℃, ◇: 120℃.
で高くなっていると考えられた。

Effect of tritium injecting methods on the HT, CH3T and CH4 emission trends fromstainless steel surface
HIGAKI, S., OYA, Y., MAKIDE, Y.

3P16
3P16

Po ߩࠬ࠹ࡦ࡟ࠬ᧼߳ߩ㔚⌕ᴺߦ㑐ߔࠆᬌ⸛(㊄ᴛᄢ㒮⥄ὼ) ٤਄᧖ᱜ᮸‫ޔ‬ਛ⷏ ቁ㔚⌕෼₸䋨䋦䋩

㧝㧚ߪߓ߼ߦ
210
Po ߪ㧘࠙࡜ࡦ♽೉ᦨᓟߩ᡼኿ᕈᩭ⒳ߢ޽ࠅ‫ޔ‬222Rn‫ޔ‬210Pb‫ޔ‬210Bi ߩሶቊᩭ⒳ߣߒߡ⍮ࠄࠇߡ߅ࠅ‫ޔ‬ⅣႺߩ޿ߚࠆߣߎࠈߦሽ࿷ߔࠆ‫ޕ‬ㄭᐕ‫ޔ‬㘶ᢱ᳓㧔․ߦ࿾ਅ᳓㧕߿㘩ຠਛߩ 210Po
ߣߘߩᓇ㗀⹏ଔ߇ᵈ⋡ߐࠇߡ޿ࠆ‫ߦߢ߹ࠇߎޕ‬⒳‫ ߦ߼ߚߩ⊛⋡ߩޘ‬210Po ߩಽᨆ߇ߥߐࠇ
ߡ߈ߚ߇ 1㧕‫ޔ‬Po ߩಽᨆߦ߅޿ߡߪ‫ޔ‬ๆ⌕‫ޔ‬ើᢔߥߤߩᵈᗧߔߴ߈໧㗴߇ሽ࿷ߒߡ޿ࠆ‫߹ޕ‬ߚ‫ޔ‬Po ߩ᷹ቯߪǩ✢ࠬࡍࠢ࠻ࡠࡔ࠻࡝࡯ߦࠃࠅⴕ߁ߩߢ‫ޔ‬㔚⌕ᴺߪൻቇಽ㔌ߣߣ߽ߦ㊀ⷐߢ޽ࠅ‫ߦߛᧂޔ‬ᡷༀ⎇ⓥߩ૛࿾߇ᱷߐࠇߡ޿ࠆ‫ޕ‬ᚒ‫ߪޘ‬ⅣႺ⹜ᢱਛߩ Po ㄦㅦቯ㊂ᴺࠍᬌ
⸛ਛߢ޽ࠅ‫ޔ‬210Po Ớᐲࠍቯ㊂ߔࠆ㓙ߦ‫✢ޔ‬Ḯ⺞⵾ᴺߣߒߡᐢߊⴕߥࠊࠇߡ޿ࠆ㌁᧼߳ߩ⥄ὼᨆ಴ᴺߦઍࠊࠅ‫ޔ‬቟ଔߢ⏕ታᕈߩ޽ࠆᣇᴺߣߒߡ Po ࠍࠬ࠹ࡦ࡟ࠬ᧼㧔⋥ᓘ 25mm‫ޔ‬ෘߐ
0.2mm㧕߳㔚⸃ᨆ಴ߐߖࠆᣇᴺ 2㨯3㧕ߦߟ޿ߡᬌ⸛ߒߚ‫ޔ߅ߥޕ‬210Po ߪ 5.304MeV ߩǩ✢ࠍ᡼಴ߒ‫ ߪ࡯ࠡ࡞ࡀࠛߩߘޔ‬243Am (5.275MeV)‫ޔ‬232U㧔5.32MeV㧕ߣㄭ޿‫ޔߢߎߘޕ‬U ߿ Am
ߩⅣႺ⹜ᢱಽᨆߦ߅޿ߡߪ‫ޔ‬ǩ✢᷹ቯߩߚ߼ߩ㔚⌕ߩ㓙ߦ‫ޔ‬Po ߩᳪᨴߦᵈᗧࠍᛄ߁ᔅⷐ߇
޽ࠅ‫ޔ‬U ߣ Am ߩ㔚⌕᜼േߦߟ޿ߡ߽ᬌ⸛ߒߚ‫ޕ‬㧞㧚ታ㛎  㔚⌕෼₸ߦᓇ㗀ߔࠆ੐㗄ߪ‫ޔ‬㔚⌕ᶧߩᶧᕈ‫౒ޔ‬ሽࠗࠝࡦ‫ޔ‬㔚ᵹ‫ޔ‬᷷ᐲߢ޽ࠆ‫ޔߢߎߘޕ‬ਅ⸥ߩࠃ߁ߦ᧦ઙࠍᄌ߃ߡ Po ߩ㔚⌕෼₸ࠍ᷹ቯߒߚ‫ޕ‬  Ԙ 㔚⌕ᶧߩᶧᕈߪ‫ޔ‬Ⴎ㉄㧙‫㉄⎫ޔ‬㧙‫㉄⎣ޔ‬㧙‫㉄ࡦ࡝ޔ‬㧙㉄ᕈߣߒߚ‫ޕ‬ԙ ౒ሽࠗࠝࡦߪ‫ޔ‬Fe‫ޔ‬Ba‫ޔ‬Pb‫ޔ‬U‫ޔ‬Am ߣߒߚ‫ޕ‬  Ԛ 㔚ᵹߪ‫ޔ‬0.1A ߹ߚߪ 0.2 A ߣߒߚ‫ޕ‬㪈㪇㪇  ԛ ᷷ᐲߪ‫ޔ‬Ᏹ᷷෸߮ 90͠ߣߒߚ‫ޕ‬
㪐㪇
㧟㧚⚿ᨐ
0.2A
㪏㪇
  Ԙ Ⴎ㉄㧙‫㉄⎣ޔ‬㧙‫㉄ࡦ࡝ޔ‬㧙㉄ᕈߢߪ‫ࠃޔ‬㪎㪇޿㔚⌕෼₸߇ᓧࠄࠇߚ߇‫ߩ࠼ࠗࡁ࠴ࠢࠕޔ‬㪍㪇㪌㪇㔚⌕ߦ↪޿ࠄࠇࠆ⎫㉄㉄ᕈߢߩ㔚⌕෼₸ߪ
0.1A
㪋㪇30㧑⒟ᐲߢ޽ߞߚ‫ޕ‬㪊㪇  ԙ ࠕࠬࠦ࡞ࡆࡦ㉄ߩᷝടߦࠃࠅ‫ޔ‬Fe ࠗࠝࡦ㪉㪇ߩ㔚⌕ߦኻߔࠆᅹኂߪߥ߆ߞߚ‫ޔߒ߆ߒޕ‬㪈㪇
Ba‫ޔ‬Pb ߦߟ޿ߡߪᴉᲚߩᨆ಴߇⷗ࠄࠇߚ‫ޕ‬㪇Ԛ 㔚ᵹ 0.1㨪0.2A‫ޔ‬
2 ᤨ㑆ߩ㔚⸃ߢ 90㧑⒟ᐲ
㪇
㪌㪇
㪈㪇㪇
㪈㪌㪇
䇭ᤨ㑆䋨ಽ䋩
 ߩ Po 㔚⌕෼₸߇ᓧࠄࠇߚ‫ޕ‬  ԛ Ᏹ᷷ߢߪ‫ޔ‬㔚⌕ߩቯ㊂ᕈߪ⏕଻ߢ߈ߕ‫ޔ‬࿑ ࠬ࠹ࡦ࡟ࠬ᧼߳ߩ Po ߩ㔚⌕90߳͠ߩട᷷߇ᔅ㗇ߢ޽ߞߚ‫  ޕ‬1) K. Murray Matthews et al., Applied Radiation and Isotopes, 65, 267-279(2007).
2) T. Miura et al., Analytical Sciences, 15, 23-27(1999).
3) T. Nakanishi et al., J. Radioanal. Nucl. Chem., 240, 887-891(1999).

Examination on electroplating of Po on stainless steel disk
UESUGI, M., NAKANISH, T.

3P17
3P17

I-126 ࠍ↪޿ߚⅣႺਛߩ࡛࠙⚛᛽಴ᴺߩᬌ⸛
(੩ㇺᄢේሶἹ 1 ේሶജᯏ᭴ 2) ٤┄↰ථ⷗ 1‫ޔ‬ਛ㊁(ᄥ↰)᦮ሶ 1‫ޔ‬ᄤ㊁శ 2‫ޔ‬㋈ᧁፏผ 2‫ޔ‬㚍ේ଻ౖ 1ߪߓ߼ߦ ⅣႺਛߩ࡛࠙⚛ಽᨆߦ߅޿ߡ‫ޔ‬ᐕઍ߇ฎߊ I-129 ߩห૏૕Ყߩૐ޿⹜ᢱࠍขࠅᛒ߁
㓙ߦߪ‫ੱޔ‬Ꮏ⿠Ḯ㧔ౣಣℂᎿ႐ߥߤ㧕↱᧪ߩᳪᨴߩᓇ㗀ࠍ⠨ᘦߔࠆᔅⷐ߇޽ࠆ‫⪺ޕ‬⠪ࠄߪ‫ޔ‬I-129 ߩห૏૕Ყ߇ૐ޿ߣߐࠇࠆජ⪲⋵⨃ේߩ߆ࠎ᳓⹜ᢱߩಽᨆࠍⴕߞߚ߇‫ޔ‬੍ᗐߦ෻ߒߡ‫ޔ‬㕖Ᏹߦ㜞޿ห૏૕Ყࠍᓧߚ‫ޕ‬ේ࿃ߣߥࠆᳪᨴ⚻〝ߪ޿ߊߟ߆⠨߃ࠄࠇࠆ߇‫⎇ᧄޔ‬ⓥߢߪ‫ޔ‬Ⴎ⚛ࠍ฽᦭ߔࠆ⹜⮎ߦ⿠࿃ߔࠆߣផ᷹ߒ‫ࠍࡦࠥࡠࡂޔ‬฽᦭ߒߥ޿
᛽಴♽㧔ࠗࠝࡦ੤឵ᴺ࡮ṁᇦ᛽಴ᴺ㧕ࠍᬌ⸛ߒ‫ޔ‬I-126 ࠍ↪޿ߡߘߩ᛽಴♽ߩ࿁෼₸ߦߟ޿ߡ⠨ኤࠍⴕߞߚ‫ޕ‬ታ㛎ᣇᴺ
 I-126 ߪ੩ᄢἹ LINAC ߦ߅޿ߡ‫ޔ‬NaI ߦ೙േ᡼኿✢ࠍᾖ኿ߒ(ǫ, n)෻ᔕࠍ੺ߒߡ⵾
ㅧߒߚ‫ޕ‬Na-24 ߩᷫ⴮ᓟߦታ㛎ߦଏߒ‫ޔ‬᡼኿⢻᷹ቯߪ NaI(Tl)ࠪࡦ࠴࡟࡯࡚ࠪࡦࠞ࠙ࡦ
࠲ࠍ↪޿ߚ‫ޕ‬ ࡛࠙⚛ߩๆ⌕࡮ṁ㔌․ᕈߩᬌ⸛ߦߪ‫ޔ‬NO3 ဳߦ⺞⵾ߒߚ㒶ࠗࠝࡦ੤឵᮸⢽ࠍ↪޿ߚ‫ޕ‬
0.4% NaI ṁᶧ߹ߚߪ 3.3% NaCl - 0.4% NaI ṁᶧ߆ࠄ᮸⢽߳ߩ࡛࠙⚛ߩๆ⌕࡮࡛࠙⚛ࠍ⽶⩄ߒߚ᮸⢽߆ࠄߩ 3.3% NaCl ṁᶧ߹ߚߪ 5 M NaNO3 ṁᶧߦࠃࠆ᮸⢽߆ࠄߩ࡛࠙⚛ߩṁ㔌ߦߟ޿ߡᬌ⸛ߒߚ‫ޕ‬ṁ㔌ᶧߩ✚㊂ߪ᮸⢽૕Ⓧߩ 12.5 ୚ߣߒߚ‫ޕ‬ ṁᇦ᛽಴ߦ߅ߌࠆ᦭ᯏ⋧ߣߒߡ࠼࠺ࠞࡦߣࠢࡠࡠࡎ࡞ࡓߩᲧセࠍⴕߞߚ‫ޕ‬᳓⋧ߩ
NaI ṁᶧࠍ NaNO2 ߅ࠃ߮ HNO3 ߦࠃࠅ I2 ߦ⺞⵾ߔࠆߎߣߢ᦭ᯏ⋧߳ߩᱜ᛽಴ࠍⴕ޿‫ޔ‬
0.1 M NaOH ṁᶧߦࠃࠅ࡛࠙⚛ߩㅒ᛽಴ࠍⴕߞߚ‫ޕ‬᳓⋧߅ࠃ߮᦭ᯏ⋧ߩ૕Ⓧߪߘࠇߙࠇ 10 ml ߣߒߚ‫ޕ‬
 AgI ⺞⵾ߪ‫᦭ޔ‬ᯏ⋧߆ࠄㅒ᛽಴ߒߚ࡛࠙⚛ߦ AgNO3 ࠍᷝടߒߡⴕ޿‫ޔ‬HNO3 ߦࠃࠅ
Ag2O ࠍṁ⸃ߩಣℂࠍᣉߒߚ‫ޕ‬AgI ࠍ Na2S2O3 ṁᶧߢṁ⸃ߒߡ᡼኿✢᷹ቯࠍⴕߥߞߚ‫ޕ‬⚿ᨐ࡮੹ᓟߩዷᦸ
 3.3% NaCl ṁᶧߪ࡛࠙⚛ߩๆ⌕ࠍᅹߍߕ߹ߚ࡛࠙⚛ߩṁ㔌ߦነਈߒߥ߆ߞߚ‫ޕ‬5 M
NaNO3 ṁᶧࠍ↪޿ࠆߣ࡛࠙⚛ో㊂ࠍṁ㔌ߒߚ‫ޕ‬ṁᇦ᛽಴ߢߪ‫ࡠࡠࠢ߮ࠃ߅ࡦࠞ࠺࠼ޔ‬ࡎ࡞ࡓߣ߽‫ޔ‬ᱜ᛽಴߅ࠃ߮ㅒ᛽಴ߩฦᠲ૞ࠍ 2 ᐲታᣉߔࠆߎߣߢ࡛࠙⚛ో㊂ࠍ࿁෼ߢ߈ࠆߎߣࠍ⏕⹺ߒߚ‫ޕ‬AgI ᴉᲚ↢ᚑߩ࿁෼₸ߪ 0.82 ~ 0.88 ߣߥߞߚ‫⎇ᧄޕ‬ⓥߩࡂࡠࠥࡦࠍ฽᦭ߒߥ޿⹜⮎ࠍ↪޿ߚ࡛࠙⚛᛽಴ᴺߦ߅޿ߡ‫ޔ‬᮸⢽ߦๆ⌕ߒߚ࡛࠙⚛ߩ 80%એ਄ࠍ AgI ߦ⺞⵾ߢ߈ࠆߎߣࠍ⏕⹺ߒߚ‫ޕ‬ ⨃ේߩ߆ࠎ᳓⹜ᢱߩ࡛࠙⚛ಽᨆࠍⴕ޿‫ޔߚ߹ޔ‬ᄢ㊂ߩ⹜ᢱ߆ࠄߩ࡛࠙⚛᛽಴ߦ߅ߌ
ࠆᧄᚻᴺߩㆡᕈࠍ⏕⹺ߒታ㓙ߩᶏ᳓߅ࠃ߮࿾ਅ᳓⹜ᢱ߆ࠄߩ࡛࠙⚛࿁෼ࠍⴕ߁⸘↹ߢ޽ࠆ‫ޕ‬
Investigation on extraction methods of environmental iodine with using I-126
KUBOTA, T., NAKANO-OHTA, T., AMANO, H., SUZUKI, T., MAHARA, Y.

3P18
3P18

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Fig.1
Energydistributionofmock  
environmental neutron source in air.
MCNPX zm¨` J>^"9(sV©¸ÂÉºÌ2¶Ð¨grF© 1 ¥£Ï½Ë»ÈÌÀ©S4 0.0 – 1.1, 34.1 – 38.5, ¥ 166.1 – 220.0
g cm-2 ©¸ÂÉºÌ2Ítª :¾¼ÌÉÎ¶ 2 ¨g© ¤ª9(;ÏS4#¨¢µ£T1Ï©S4¤ªY9(;#£´´©¸ÂÉºÌ2©
%ªÏ oq;¨±¡£¯&a§´^"9(sV©¸ÂÉºÌ2¶%zm rFÏÐ©9(;S42¨x§5¶F £´¡ 7¡£^"9(©¬¤¯Ï©;¶Fb¨¬´ux¤´A[1) Komura, K. and Hamajima, Y., Applied Radiation and Isotopes,
2004, 61, 185-189.
2) Komura, K, J. Radiation Reseach, 2001, 42, S17-S29.
3) Dunne, J. A. and Elmore D., Earth and Planetary Science Letters,
2003, 206, 43-49.
4) Hamajima, Y. and Komura, K., Radioactivity in the environment,
2006, 8, 511-519.

Effective shields of environmental neutron.
HAMAJIMA, Y., KOMURA, K.

Fig.2 Energy distributions of environmental
neutron in 0.0 – 1.1 (upper), 34.1 – 38.5 (middle),
and 166.1 – 220.0 (lower) g cm-2 concrete.

3P19
3P19

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3P20
3P20

212,214Pb
212,214Pb
i n - s it u

i n- s it u
5
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H V- 5 0 0 F
D AV I S

5 0 0 L / mi n
Va nt a g e P r o 2 w ea t h er mo n it or i n g s t a t io n
15

4
1

2
GB-100R,3

11 0 mm

3 cm
214

212

k eV )

7

P b ( 2 3 8 k eV )
1

8

6

7

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2

2007

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212,214

212

Pb
2007

214

5

Pb

Pb
26

C o rre l at io n bet w e e n 2 1 2 , 2 1 4 Pb a ct iv it i e s a nd le a d co nce nt r at io n i n t heat mo s p he re by a g a m ma - r ay me as ure me nt i ns t a ll i ng a n i n - s i t u w eat he r
mo ni t o ri ng s t at io n
S AK AM A, M . , I M UR A, H . , O K U BO , H . , SH I N M O T O , Y. , S UJ I N O , K .

3P21
3P21

ᎹፒᏒߦ߅ߌࠆ
ᎹፒᏒߦ߅ߌࠆᄢ᳇ਛ
ߦ߅ߌࠆᄢ᳇ਛߩ
ᄢ᳇ਛߩ 214Pb ỚᐲߩỚᐲߩᄌേ(᧲ᄢ RI ࠮) ٤ዊᳰ⵨਽‫(ޔ‬ᮮ࿖ᄢ㒮ⅣႺᖱႎ) ᧻Ỉ⩿‫ޘ‬ሶ‫ޔ‬(᣿ᴦᄢℂᎿ) ૒⮮ ⚐1. ߪߓ߼ߦ
ᄢ᳇ਛߩ 214Pb (ඨᷫᦼ: 27 min) ߪ 222Rn ߩᆷᩭ⒳ߩ৻ߟߢ޽ࠅ‫ ߫ߒ߫ߒޔ‬222Rn ߩઁߩᆷᩭ⒳ߢ޽ࠆ 218Po (ඨᷫᦼ: 3.10 min)࡮214Bi (ඨᷫᦼ: 19.9 min) ߣૃߚ᜼േࠍ␜ߒ 1)‫ߩߘޔ‬ᣣ㑆ᄌേ߿ቄ▵ᄌേ߇޿ߊߟ߆ႎ๔ߐࠇߡ޿ࠆ 1-3)‫ޕ‬222Rn ߩ⍴ኼ๮ᆷᩭ⒳ߪ‫ޔ‬222Rn ⥄૕ߩඨᷫᦼ߇
3.82 ᣣߣᲧセ⊛㐳ߊ‫ޔ‬უᄌࠍⴕ߁೨ߦ㐳〒㔌ߩ⒖േ߇น⢻ߥߚ߼‫ޔ‬ᔅߕߒ߽⊒↢Ḯߩઃㄭߢᬌ಴ߐࠇࠆࠊߌߢߪߥ޿‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬ᄢ᳇ਛߩ 214Pb Ớᐲߦߟ޿ߡ㒠㔎߿㘑ะ࡮㘑ㅦ╬ߣᲧセࠍⴕ޿‫ޔ‬᳇⽎ⷐ⚛ߣߩ㑐ଥࠍ⺞ߴߚ‫ߦߢ߹ࠇߎޔߚ߹ޕ‬ᎹፒᏒߢ᷹ⷰߒߚᄢ᳇ਛߩ 212Pb(ඨᷫᦼ: 10.6 h) ߩỚᐲ࠺࡯࠲ߣߩᲧセ߽ⴕߞߚߩߢႎ๔ߔࠆ‫ޕ‬
2. ታ㛎ᣇᴺ ࠛࠕࡠ࠱࡞ߩ᝝㓸ߦߪ ADVANTEC GB100R ࠟ࡜ࠬ❫⛽ࡈࠖ࡞࠲࡯ࠍⵝ⌕ߒߚ SIBATA
HVC-500 ࡂࠗࡏ࡝ࡘ࡯ࡓࠛࠕࠨࡦࡊ࡜࡯ࠍ૶↪ߒߚ‫ޕ‬ⓨ᳇ๆᒁㅦᐲߪ 600 dm3min-1‫ޔ‬᝝㓸ᤨ㑆ߪ 4 ᤨ㑆ߢ޽ࠆ‫⹜ޕ‬ᢱਛߩ 214Pb ߣ 212Pb ߩቯ㊂ߪ‫ޔ‬531.9 keV ߣ 238.6 keV ߩǫ✢ࠍ
LEPS ࠍ↪޿ߚ㕖⎕უǫ✢ࠬࡍࠢ࠻ࡠࡔ࠻࡝࡯ߦࠃߞߚ‫ޕ‬
3. ⚿ᨐߣ
⚿ᨐߣ⠨ኤ
2003 ᐕ 3 ᦬߆ࠄ 2004 ᐕ 2 ᦬߹ߢ᷹ⷰߒߚᄢ᳇ਛߩ 214Pb Ớᐲߩቄ▵ᄌേࠍ Fig.1 ߦ␜ߔ‫ޕ‬ᎹፒᏒߢ᷹ⷰߐࠇߚᄢ᳇ਛ 214Pb ߩ᦬ᐔဋỚᐲߪ 1.3㨪4.1 Bq/m3 ߢ‫ޔ‬౻ቄߦ㜞Ớᐲࠍ␜ߔ৻ጊ
ဳߩቄ▵ᄌേߢ޽ߞߚ‫ޕ‬᳇⽎࠺࡯࠲ߣᲧセߒߚ⚿ᨐ‫ޔ‬㒠㔎ߦࠃࠆỚᐲᷫዋ‫ޔ‬㘑ㅦߩ਄᣹ߦኻ
ߔࠆỚᐲߩૐਅ௑ะ߿㘑ะଐሽᕈ߇᷹ⷰߐࠇߚ‫ޕ‬ ᄢ᳇ਛߩ 214Pb ߣ 212Pb ߩỚߘࠇߙࠇߩⷫᩭ⒳ࠍ⠨ᘦߔࠆߣ‫ ޔ‬222Rn㧙 214Pb ߩ⚵ߺวࠊߖߢ‫ోޔ‬૕ߣߒߡߩඨᷫᦼߪ
222

Rn ߩ 3.8 ᣣߦ‫ޔ‬220Rn㧙212Pb

ߢߪ 212Pb ߩ 0.44 ᣣߣߥࠅ‫ޔ‬౒ߦඨᷫᦼ߇ᣣߩࠝ࡯࠳࡯ߢ
޽ࠆߚ߼‫ޔ‬㘃ૃߒߚỚᐲᄌേ߇⷗ࠄࠇߚߣ⠨߃ࠄࠇࠆ‫ޕ‬ෳ⠨ᢥ₂

6
Concentration / Bq䍃m-3ᐲߪ㘃ૃߒߚᄌേࠍ␜ߒߚ‫ޕ‬

4

2

0

March April May June July Aug Sept Oct Nov Dec Jan Feb
2003
2004
Month
Fig. 1 Monthly average of every four hours concentrations ofatmospheric 214Pb at Kawasaki from March 2003 to February 2004.

1) Porstendörfer, J., Butterweck, G. and Reineking, A., Atmos. Environ., 25A, 709-713 (1991)
2) Sheets, R. W. and Lawrence, A. E., J. Radioanal. Nucl. Chem., 242, 761-767 (1999)3) ጊਅ ᓀࠄ, Proceedings of the Fourth Workshop on Environmental Radioactivity, 71-77 (2003)
Variation in the atmospheric concentrations of 214Pb at Kawasaki, Japan
KOIKE, Y., MATSUZAWA, N., SATO, J.

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0.766
/Ëģõ 1Ĥú¹Yi4ßË#`ĐvÎ
filter17.7ġ§"ĞísĈ}ôú¹#DFç ±Âùp4ªbô_nÙì»#0 Ç*f\#é 32nmf¿Íl#é 2.8
MA=O"U8NX4čq Ď&$-/púñ Ģ 0xñ¤ 0
Development of a graded screen array for measuring size distribution of radioactive nano-particles
OSADA, N., BANNO, S., OKI, Y., YAMASAKI, K., SHIBATA, S.

3P23
3P23
              ⚕㘃ߦ฽߹ࠇࠆ᡼኿⢻㧔Χ㧕                          㧔᧲ᄢℂ㧕 ዊᯅ ᵻ຦㨇ߪߓ߼ߦ㨉⚕㘃ߪ‫ޔ‬ᄙ㊂ߦ↢↥࡮ᶖ⾌ߐࠇ‫ޔ‬ᑄ᫈࡮࡝ࠨࠗࠢ࡞ߐࠇߡ޿ࠆߚ߼‫ޔ‬ⅣႺߦ߅ߌࠆ᡼኿✢࡮᡼኿⢻ߩჇᷫࠍ߽ߚࠄߔේ࿃ߩ৻ߟߣߥߞߡ޿ࠆߣ⠨߃ࠄࠇࠆ‫߇ࠊޕ‬࿖ߢߪ‫ޔ‬ᑄ᫈ߐࠇߚ⚕㘃ߪ‫߇ߤࠎߣ߶ޔ‬นΆ‛ߣߒߡ὾ළಣಽߐࠇ‫⚿ߩߘޔ‬ᨐ↢ߓߚ὾ළἯߪ‫ޔ‬ᄢㇱಽᦨ⚳ಣಽ႐ߦၒ߼┙ߡࠄࠇߡ޿ࠆ‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬㔀⹹╬ߩ⚕㘃⹜ᢱߦߟ޿ߡ὾ළἯߦ฽߹ࠇࠆ᡼኿ᕈᩭ⒳ߩỚᐲࠍ᳞߼‫ߩߘޔ‬Ớᐲ࡟ࡌ࡞ߦߟ޿ߡ⠨ኤߒߚߩߢႎ๔ߔࠆ‫ޕ‬㨇ታ㛎㨉⹜ᢱߪ‫ޔ‬1999 ᐕ߹ߚߪ 2000 ᐕߦࠊ߇࿖ߢ⊒ⴕ߹ߚߪ⽼ᄁߐࠇߚ㔀⹹╬ߢ޽ࠅ‫ࠇߘޔ‬ࠄߦ฽߹ࠇࠆ᡼኿ᕈᩭ⒳ߩỚᐲߦߟ޿ߡߪ‫ޔ‬೨ႎ 1),2)ߦ߅޿ߡႎ๔ᷣߺߢ޽ࠆ‫ޕ‬Ἧൻ↪⹜ᢱߪ‫ޔ‬ฦ⚕㘃⹜ᢱࠍෘߺᣇะߦᢙ▎ᚲᛂߜᛮߊߎߣߦࠃࠅណขߒߚ‫ޕ‬900͠ߢἯൻߒ‫ޔ‬Ἧಽ฽᦭₸ࠍ᳞߼ߚ‫੹ޕ‬࿁᳞߼ߚἯಽ฽᦭₸ߣߔߢߦᓧࠄࠇߡ޿ࠆ⚕㘃⹜ᢱߩ᡼኿ᕈᩭ⒳ߩỚᐲ߆ࠄ‫⚕ޔ‬㘃⹜ᢱߩ὾ළἯߦ฽߹ࠇࠆ᡼኿ᕈᩭ⒳ߩỚᐲࠍ⸘▚ߒߚ‫ޕ‬㨇⚿ᨐߣ⠨ኤ㨉࿑ 1 ߦ‫⚕ޔ‬㘃⹜ᢱߩ὾ළἯߦ฽߹ࠇࠆᄤὼ᡼኿ᕈᩭ⒳ 226Ra‫ޔ‬228Th ෸߮ 40K ߩỚᐲ⸘▚⚿ᨐࠍ␜ߔ‫ޕ‬࿑ 1 ࠍ⷗ࠆߣ‫⹜ޔ‬ᢱߩ⒳㘃ߦࠃࠅ‫ߩࠅߥ߆ޔ‬Ớᐲߩ㆑޿߇޽ࠆߎߣߦ᳇ઃߊ‫ ోޕ‬34 ⹜ᢱߩ 226Ra‫ޔ‬228Th ෸߮ 40K Ớᐲߩᐔဋ୯ߪ‫ ࠇߙࠇߘޔ‬27‫ޔ‬75 ෸߮ 75 Bq/kg ߢ޽ࠆ‫ޕ‬ߎࠇࠄߩ୯ࠍ࿾Ზ෸߮⧎ፘጤߦ߅ߌࠆᐔဋ⊛ỚᐲߣᲧセߔࠆߣ‫ޔ‬226Ra ߦߟ޿ߡߪ࿾Ზߣ⧎ፘጤ
ߩਛ㑆⊛ߥ୯‫ޔ‬228Th ߦߟ޿ߡߪ⧎ፘጤਗߺߩ୯‫ޔ‬40K ߦߟ޿ߡߪ࿾Ზߩᢙಽߩ 1 ߢ‫⧎ޔ‬ፘጤߩ⚂
1 ഀߩ୯ߣߥߞߡ޿ࠆ‫ޕ‬ᑪ▽᧚ᢱ╬߆ࠄߩࠟࡦࡑ✢ߦࠃࠆⵍ߫ߊ߇ኈ⹺ߢ߈ࠆ߆ࠍ್ᢿߔࠆߚ
߼ߩ୯ߢ޽ࠆ࡜ࠫ࠙ࡓᒰ㊂ࠍ‫੹ޔ‬࿁ߩ⚕㘃⹜ᢱߩ὾ළἯߩ 226Ra‫ޔ‬228Th ෸߮ 40K ߩᐔဋỚᐲߦၮ޿ߡ⸘▚ߔࠆߣ‫ޔ‬129 Bq/kg ߣߥࠆ‫ޕ‬

࿑ 1  ⚕㘃⹜ᢱߩ὾ළἯߦ฽߹ࠇࠆᄤὼ᡼኿ᕈᩭ⒳ߩỚᐲ
⹜ᢱߩ⒳㘃ߪ‫ޔ‬ᰴߩㅢࠅߢ޽ࠆ‫ޕ‬A ᢥᐶᧄ‫ޔ‬B ౮⌀ㅳೀ⹹‫ޔ‬C ࠞ࡜࡯㔀⹹‫ޔ‬D ✚วㅳೀ⹹‫ޔ‬E Ẃ↹ㅳೀ⹹‫ޔ‬F ශ೚↪⚕‫ޔ‬G ࠦࡇ࡯↪⚕‫ޔ‬H ࡁ࡯࠻ࡉ࠶ࠢ‫ޔ‬I ᣂ⡞‫ޔ‬J ᛬ㄟᐢ๔1) ዊᯅᵻ຦㧘╙ 48 ࿁᡼኿ൻቇ⸛⺰ળ㧔2004)‫ޔ‬RADIOISOTOPES, 54, 427-435 (2005)2) ዊᯅᵻ຦㧘╙ 49 ࿁᡼኿ൻቇ⸛⺰ળ㧔2005)
Radioactivity content of papers (V)KOBASHI, A.

3P24
3P24

ǺÓȏȥǳȮƔ౴ϳƟƧǡȤȆȦ(VI)ߋઑƶ‫ݜ‬঵ư‫ڤ‬ईܲ੧(௉඿પ໊)¸Ē৵޽൅ࠇ¹ෝᓵ‫߼ܜ‬ñࣜۗòǡȤȆȦ(VI)ǟǥȮ UO22+ ƳଃਬƔ౴ϳƟƧߋઑƶඦ‫ݥ‬༎ƷࣺƲƌƔ¹ƛǔ ฉ Ƴ ඦ ‫ݥ‬Ɲ ǔ Ʈ ƌ Ǔǡ Ȥ Ȇ Ȧ (VI)Ƴ ଃ ਬƔ ౴ ϳ Ɵ Ƨߋ ઑ Ʒ¹ [UO2(acac)2py]1),[UO2(NO3)2(2,2’-bpy)]2), [UO2(OTf)2(terpy)]3) ௖ƔƊǓº෭‫ףڽ‬ƯƷ¹ǡȤȆȦ(VI)ƳଃਬƔ౴ϳƟƧ࠯ƶы‫؜‬ǚଳǁǓЀ¹ߡ‫ޕ‬ƶଃਬ‫ڈ‬౴ϳࠃƯƊǓ terpy (terpy = α,α’,α’’ǺÓȏȥǳȮ) Ɣ౴ϳƟƧ 2 Ƭƶߋઑ {[UO2(OH)(MeOH)(terpy)]2[UO2(NO3)4]} ư{[UO2(NO3)(terpy)]2O2} ƶ‫ݜ‬঵ư૒‫ڤ‬ई X ਅܲ੧ӕ৖ǚ݉ƫƧºñ‫ݜ‬঵òterpy 0.12 g (0.50 mmol) ǚȜǺȉÓȦ 10 ml ƳຜӕƟƧຜњƳ¹ख߱ǡȤȆ
Ȧ(VI)ང঎ཋ൝ 0.25g (0.50 mmol) ǚȜǺȉÓȦ 10 ml ƳຜӕƟƧຜњǚ‫ށ‬Ƥ¹ƥƶ
ǆǆ 24 ࠯յৌ૷ƝƣǓưҎॐ‫ڤ‬ईƶ {[UO2(OH)(MeOH)(terpy)]2[UO2(NO3)4]} Ɣ௻Ǒ
ǔ¹2 ȱ‫ڧ‬ϱरৌ૷ƝƣǓưᐘॐ‫ڤ‬ई {[UO2(NO3)(terpy)]2O2} Ɣ௻ǑǔƧºñ‫ڤ‬үò{[UO2(OH)(MeOH)(terpy)]2[UO2(NO3)4]} ƯƷ¹[UO2(OH)(MeOH)(terpy)]+ ư[UO2(NO3)4]2- ƶ 2 ࡾ་ƶ U(VI) ƔƊǒ¹ਕࡣƷ¹ǡȤȆȦ(VI)ƶǣǪǝȃȥǝȦ൲฻Ƴ¹terpy ƶ 3 Ƭƶଃਬư¹disorder ƟƮƌƮ಴ൿƯƕƲƌƔ MeOH ư঎߱Ҡ൝ǟǥȮƶ߱ਬƔ 1 ƬƢƬ౴ϳƟƧưࠈǗǔǓ¹ǌǌཌྷǛƨ۵ධ໩খ‫ ٺ‬7 ౴ϳƯ¹‫ࡣۼ‬Ʒ¹ǡȤȆȦ(VI)ƶǣǪǝȃȥǝȦ൲฻Ƴ¹2 Ƭƶ૒‫ޕ‬ƶख߱ǟǥȮư¹2 ƬƶǨȧÓȃ౴ϳƟƧख߱ǟǥȮƔȃȤȮǴஇƳ౴ϳƟƧངධ໩খ‫ ٺ‬8 ౴ϳƯƊƫƧº{[UO2(NO3)(terpy)]2O2} Ʒ¹ǡȤȆȦ(VI)ƶǣǪǝȃȥǝȦ൲฻Ƴ¹terpy ƶ 3 Ƭƶଃਬư¹૒‫ޕ‬ƶख߱ǟǥȮ 1 Ƭư¹ƥƟƮȌÓǥǨǲȄƶ 2 Ƭƶ߱ਬƔ౴ϳƟƧ¹ǌ
ǌཌྷǛƨངධ໩খ‫ ٺ‬8 ౴ϳߋઑƯƊƫƧºǆƧ¹ȌÓǥǨǲȄƷ¹[UO2(NO3)(terpy)] ȐȤǫȜȮȃƶյǚҰؑƟƮƌƧº[UO2(NO3)4]2- unit

[UO2(OH)(MeOH)(terpy)]+ unit{[UO2(OH)(MeOH)(terpy)]2[UO2(NO3)4]}

Molecular structure of{[UO2(NO3)(terpy)]2O2}

1) N. W. Alcock, et al., J. Chem. Soc., Dalton Trans., 679-681(1984).
2) N. W. Alcock, et al., Inorg. Chim. Acta, 94, 279-282(1984).
3) J. Berthet, et al., Dalton Trans., 2814-2821(2004).
Synthesis and crystal structures of the uranyl(VI) complexes coordinated by terpyridine
KAWASAKI T., KITAZAWA T.

3P25
3P25

4- ૷ ՘ ȏ ȥ ǳ Ȯ ǚ ս ǈ ǝ Ƕ Ǽ Ȧ ǝ Ƕ ȃ ȅ ȃ ǡ Ȥ Ȇ Ȧ (VI) ߋ ઑ
UO2(acac)2(R-py)ƶ‫ڤ‬ईܲ੧á௉඿પ໊âĒ‫૾»࣎ݿً้»়ؑݗ‬஡ฏ࢔ງ»ෝᓵ‫߼ܜ‬ӉÐƷǝǪǼȉǟȄҠ‫ݜ‬൝ƳƒƙǓ‫ݜڤ‬Ƴ‫ؘ‬ฒǚ࠮Ʃ»ࡾÐƶȈȒǿȆȦ(VI)Ҡ‫ݜ‬൝ƶ 237Np
ȜǴȋǡǝÓǴȕǪȃȦǚ੯୩ƟƮƕƮƌǓ¼ȏȥǳȮǌȎȏȥǳȦǚ౴ϳƟƧߋઑƶǴȕǪȃȦƓǑ»ଃਬ‫ࠃۍ‬ƶǃƎƔ߱ਬ‫ࠃۍ‬ǐǒǊ஢ࠃǚંƗ‫׼‬ຌƟ»஢ࠃƷȈȒǿȆȦ(VI)ƶ
5f ֭௶ƳࢌຓƝǔƮƌǓƛưƔ࠷‫މ‬ƝǔƧ¼ƥƛƯȏȥǳȮգीƳ૷՘֏ǚ௮హƟƧưƕƳ
Ʊƶ୷ஶ»஢ࠃीઙƔы‫؜‬ǚࢄƙǓƓǚଳǁǓ๋இƯ»[UO2(acac)2(R-py)]áR = H, CH3, OCH3,t
Bu, N(CH3)2, CNâǚ‫ݜ‬঵Ɵ»ƥƶ‫ڤ‬ईܲ੧ӕ৖ǚ݉ƲƫƧ¼ǡȤȆȦ(VI)ǚພƌƮƌǓƶƷ»ȈȒǿȆȦ(VI)ưƷ௬‫ٺ‬ƶ‫ڤ‬ईǚ߁ǓƛưƔǐƗ૯ǑǔƮƌƮ»ࡑ‫ۊ‬रƶর๢ƔࣺƲƌƓǑƯƊǓ¼‫ݶ‬ӖƷƛƶǡȤȆȦ(VI)ߋઑƶ‫ڤ‬ईܲ੧ƳƬƌƮඦ‫ݥ‬ơǓ¼
åࡑ‫ۊ‬æߋઑƶ‫ݜ‬঵¾ख߱ǡȤȆȦ(VI)ང঎ཋ൝ 0.5 mmol ǚ MeOH 10 mL ƳຜӕƟ»4-૷՘ȏȥǳȮ 2.5 mmol ưǝǶǼȦǝǶȃȮ 2.5 mmol ƶ MeOH ຜњ 10 mL ǚҦƐƧ¼ຜњǚࡋҜƯද૷Ɵ MeOH ǚृದƝƣƮ»ǥȧȮǳॐƶ‫ڤ‬ईǚ௻Ƨ¼௻ǑǔƧߋઑƷ»‫ی‬ਬൟ৖»1H
NMR»FAB-MS Ư௬୩ƟƧ¼‫ڤ‬ईܲ੧ӕ৖¾CCD ‫֎ࢽڸ‬പƕ X ਅӖ৥‫ ڈ‬SMART APEXáBurker ࡡâǚພƌƮࡋҜƯӖ৥ȂÓǺǚ੯୩ƟƧ¼ȂÓǺƶ໊ࣕưӕ৖Ʒऺ඲Ƴǐǒ݉Ʋƌ»঎ਬ‫ࠃۍ‬ϱӱƶ‫ࠃۍ‬ƳƬƌƮЂධ঴ҜஶПࠃǚஉພƟƮুธҠǚ݉ƲƫƧ¼å‫ڤ‬үư݂ߒæߋઑƷƌƢǔǊ۵ධ໩খ‫ٸ‬ƶൟࠃܲ੧ǚࡷǒ»ǣǪǝȃȥǝȦ฻Ƴ 2 ൟࠃƶ acac–ư
4-R-py Ɣ౴ϳƟƮƌǓ¼ǣǪǝȃȥǝȦ฻ƶ൲฻঴ƷƱƶߋઑƯǊ‫ݗ‬Ɨ»ǡȤȮ‫ࠃۍ‬Ʒ൲฻रƳϳ૷ƟƮƌǓ¼ຊੀƝǔǓǐƎƳȏȥǳȮգरƶ૷՘֏ƳǐƫƮ U–N ‫״‬໐Ʒ඄ҠƟƮƒǒ»஢ࠃ‫ט‬С঴ƶ CN Ɣ‫ݜڤ‬ơǓưସƗƲǒá2.668 Åâ»஢ࠃ‫׼‬
ຌ঴ƶ N(CH3)2 Ɣ‫ݜڤ‬ơǓư૜ƗƲǓá2.603 Åâ¼
U–N ‫ݜڤ‬ƶ඄ҠƷ»ǡȤȆȦƶ U=O ‫״‬໐ǌ acacưƶ U–O ‫״‬໐ƳǊы‫؜‬ǚຌƐƮƌǓ¼ই 1 Ƴ࠷ơǐƎƳ»ȌǾǨȮǫƶܑүƔƊǓǑƟƗ૒࣐ƳƷ඄ҠƟƮƌƲƌƔ»U–N Ɣ૜ƗƲǓư U=O»U–O
ưǊƳସƗƲǓ‫ܕٲ‬ƔƊǓ¼฻ಋƌƛưƳ඄Ҡƶ୷ஶƷ»ǡȤȆȦƶ U=O ƶධƔપƕƌ¼ǆƧ U–NƔ૜ƗƲǓư»మƬƶ acac ౴ϳࠃƶƎƩȏȥǳȮ
੩ƳƊǓ߱ਬ‫ࠃۍ‬ƔǡȤȮ‫ࠃۍ‬ǚ؏ǈԒ
áO(acaac)–U–O(acac’)âƔ‫ܢ‬ƔƫƮƌǓ¼ǆƧǣ
Fig. 1 Relation between U–N bondǪǝȃȥǝȦ฻ưȏȥǳȮգƔƬƗǓమ฻ઑԒƷ» lengths and U=O and U–O(acac) bond
R = CN ƶ 37.8°ƓǑ N(CH3)2 ƶ 56.1°ƶյƯ඄ҠƟlengths
and
O–U–O
anglesinƮƌǓ¼ U–N Ɣ૜ƗƲƫƮ»ৣ‫ؼ‬ơǓư»py գ[UO2(acac)2(4-R-py)]
ư acac ൟࠃյƶಶದǚཋǑƚǓƧǉƳ»py գƔ໔ƬǐƎƳƲƫƮƌǓư݂ƐǑǔǓ¼
Crystal structures of [UO2(acac)2(4-R-py)] (R = H, Me, Et, tBu, OMe, NMe2)
TAKAHASHI, M., KOMAGINE, J., TAKEDA, M., KITAZAWA, T.

⥄Ꮖ⚵❱ൻනಽሶ⤑ࠍ↪޿ߚ Am(III)ߣ Eu(III)ߩಽ㔌ߩ⹜ߺ

3P26
3P26

(㕒ጟᄢ᡼኿⎇‫᧲ޔ‬ർᄢ㊄⎇ 1‫ޔ‬ାᎺᄢℂ 2)

٤ട⮮㗅਽‫ޔ‬⍫᳗⺈ੱ‫ޔ‬૒⮮દ૒ോ 1‫ޔ‬ਛ᧛ବᄦ 2‫⩲ޔ‬ᴧ⧷ᄦ‫↪૶ ޤ⸒✜ޣ‬ᷣߺᩭΆᢱ߆ࠄ࠙࡜ࡦߣࡊ࡞࠻࠾࠙ࡓࠍ࿁෼ߒߚᱷࠅߩ㜞࡟ࡌ࡞᡼኿ᕈᑄ᫈
‛(HLW)ਛߦߪ‫ޔ‬ඨᷫᦼ߇ᢙචᐕએਅߩ࡜ࡦ࠲ࡁࠗ࠼(Ln(III))ߣඨᷫᦼ߇ᢙජᐕࠍᜬߟ߽ߩ߽
฽߻ࡑࠗ࠽࡯ࠕࠢ࠴ࡁࠗ࠼(MA(III))߇฽߹ࠇߡ޿ࠆ‫ޕ‬HLW ߆ࠄ MA(III)ߩߺࠍಽ㔌ߒ‫ࠇߘޔ‬ࠍᩭ෻ᔕߦࠃࠅ⍴ኼ๮ᩭ⒳߳ߣᄌ឵ߔࠆߎߣ߇ߢ߈ࠇ߫ HLW ߩ଻▤ᦼ㑆ࠍ⍴❗ߢ߈ࠆ‫߆ߒޕ‬ߒ‫ޔ‬Ln(III)ߣ MA(III)ߩൻቇ⊛ᕈ⾰߇ᭂૃߒߡ޿ࠆߚ߼ਔࠗࠝࡦߩಽ㔌ߪኈᤃߢߥ޿‫ޕ‬ᧄ⎇ⓥߢߪ‫ޔ‬エࠄ߆޿⎫㤛ࠍᯏ⢻ᕈㇱ૏ߦᜬߟ⥄Ꮖ⚵❱ൻනಽሶ⤑(SAMs)਄߳ߩ‫ޔ‬Ln(III)ߩ Eu(III)ߣ MA(III)ߩ Am(III)ߩๆ⌕ߦ⋧㆑ࠍ↢ߓࠆൻቇⅣႺࠍ⺞ߴࠆ⎇ⓥࠍⴕߞߚ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬SiO2 ☸ሶ(☸ሶᓘ 1~5 µm)਄ߦ 3 ࡔ࡞ࠞࡊ࠻ࡊࡠࡇ࡞࠻࡝ࡔ࠰ࠠࠪࠪ࡜ࡦ
(3-MPTS)SAMs ࠍ૞ᚑߒߚ‫ߦࠇߘޕ‬ኻߔࠆ Eu(III)ߣ Am(III)ߩๆ⌕ታ㛎ࠍએਅߩᚻ㗅ߢⴕߞߚ‫ޕ‬૞ᚑߒߚ SAMs ࠍ࠻࡟࡯ࠨ࡯㊂ߩ 152,154Eu(III)߅ࠃ߮ 241Am(III)ࠍ฽߻ 298 K ߩ 0.01 M ⎣㉄࠽࠻࡝࠙ࡓ᳓ṁᶧਛߦᶐẃߐߖ‫ޔ‬5 ಽ㑆ᝄߣ߁ᓟ‫ޔ‬3-MPTS SAMs ࠍࠈㆊߒ‫ߩߘޔ‬ṁᶧߣ SAMsߩ᡼኿⢻㊂ࠍ NaI(Tl)࿕૕ࠪࡦ࠴࡟࡯࡚ࠪࡦࠞ࠙ࡦ࠲ࠍ↪޿ߡ᷹ቯߒๆ⌕㊂ࠍ᷹ቯߒߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ ޤ‬Eu(III)ߣ Am(III)ߩๆ⌕ߪ‫ޔ‬ਔࠗࠝࡦߢ 4㧨pH ߩ▸࿐ߦ߅޿ߡ߶߷ 100%ๆ⌕߇⷗ࠄࠇ‫ޔ‬pH㧨4 ߩ▸࿐ߢߪ Am(III)ߩᣇ߇ Eu(III)ࠃࠅ߽‫ߦ⤑ࠅࠃޔ‬ๆ⌕ߐࠇ߿ߔ޿ߎߣ߇ࠊ
߆ߞߚ‫ ߪࠇߎޕ‬Eu(III)ߣ Am(III)ߩൻቇ⊛ᕈ⾰ߩ௖߆ߥエࠄ߆ߐߩ㆑޿ߦࠃࠆ߽ߩߣᕁࠊࠇࠆ‫ޕ‬ߐࠄߦ‫ޔ‬ṁᶧਛߩ⎣㉄࠽࠻࡝࠙ࡓỚᐲࠍᄌൻߐߖߚታ㛎ࠍⴕߞߚ‫࠙࡝࠻࠽ߣࡦࠝࠗ㉄⎣ޕ‬ࡓࠗࠝࡦỚᐲߩ਄᣹ߦ઻ߞߡๆ⌕㊂ߩᷫዋ߇ߺࠄࠇߚ‫ߪࠇߎޕ‬㧔1㧕3-MPTS SAMs ⤑ߣ࠽࠻࡝࠙ࡓࠗࠝࡦߣߩ෻ᔕߣ㧔2㧕Am(III)߅ࠃ߮ Eu(III)ߣ⎣㉄ࠗࠝࡦߣߩ෻ᔕߦࠃࠅ‫ޔ‬Am(III)߅
ࠃ߮ Eu(III)ߩ⤑߳ߩๆ⌕߇㒖ኂߐࠇߚߚ߼ߣ⠨߃ࠄࠇࠆ‫ޕ‬
㩷

100
80
60

㩷

80

Am
Eu
㩷

Am
Eu

ๆ⌕㊂㩷%

ๆ⌕㊂㩷%

100

㩷

60

40
20

40
3.0

3.5

             pH

4.0

࿑ 1 pH ߦኻߔࠆๆ⌕㊂ߩᄌൻ                     

4.5

0

-2.0

-1.5

-1.0
-0.5
log[NaNO3]

 ࿑ 2 ⎣㉄࠽࠻࡝࠙ࡓࠗࠝࡦỚᐲᄌൻߦኻߔࠆๆ⌕㊂ߩᄌൻ

Study on the separation of Am(III) from Eu(III) using self assembled monolayers
KATO, J., YAMAGA, M., SATOH, I., NAKAMURA, T., SUGANUMA, H.

0.0

!"#$%#$&'()* Eu(III)+ Am(III),-./0

3P27
3P27

(1
1

2

2
1

)

1

1

3

Am(III)Fig1

6(toluen-3,4dithiol(TDT)

4,4'-diphenyltetrathiafulvalene(DPTTF),

1,4,7,10,13,16-hexathiacyclooctadecane(18-ane-S6),

dihexyl-2,2′-bithiophene(DHBT), 2,2':5',2''-terthiophene(TT),5,5′-2,5-bis(5-tert-butyl-2-benzoxazolyl)
0.10 mol/dm3

thiophene(BTBBT))

1,2sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (TFPB)
152,154241Eu0.10 mol/dm3

1.0 µlAm

1

NaI(Tl)Eu(III)

Am(III)

4<pH<7Am(III)TFPBAm(III)

S

S

SH
SH

S

S

S

S

S
S

DPTTF

TDT

S
S

18-ane-S6
N

S

C6H13

S

S

C6H13

DHBT

S

S

N
S

O

TT
Fig. 1

Solvent extraction of Eu(III) and Am(III) using sulfur-coordination ligands.
MIYASHITA, S., SATOH, I., YANAGA, M., OKUNO, K., SUGANUMA, H.

O

BTBBT

6E1ߩ᳓⋧㧛᦭ᯏ⋧㑆ᮡḰࠗࠝࡦ⒖േࠡࡉ࠭ࠛࡀ࡞ࠡ࡯ߩ᳿ቯ

3P28
3P28




ේሶജᯏ᭴࡮ ᾢᧄᄢ  ٤ർㄞ┨ᶈ ‫⾆᧛ᧁޔ‬ᶏ ‫ᧁޔ‬ේჾᨋ ✜⸒ ᩭಽⵚ↢ᚑ‛ߩ߁ߜ 6E ߪ⎣㉄ṁᶧਛߢ  ଔ 6E1 ߇ᦨ߽቟ቯߢ޽ࠅ‫ޔ‬ౣಣℂᎿ⒟߿㜞࡟ࡌ࡞ᑄ᫈‛ಣℂߦ߅޿ߡࠕࠢ࠴ࡁࠗ࠼߿ߘߩઁߩᩭಽⵚ↢ᚑ‛ߩኻࠗࠝࡦߣߒߡᝄ⥰߁ߚ߼‫ޔ‬᜼േ೙ᓮߩ࿎㔍ߥర⚛ߢ޽ࠆߣ⹺⼂ߐࠇߡ޿ࠆ‫ޔߒ߆ߒޕ‬᛽಴೷ߣߩ⋥ធߩ㍲↢ᚑ߇㕖Ᏹߦዊߐ޿ࠕ࠾ࠝࡦߩࠗࠝࡦಽ㈩ߪ‫ޔ‬᳓⋧㧛᦭ᯏ⋧㑆ߩࠗࠝࡦߩᮡḰ⒖േࠡࡉ࠭ࠛࡀ࡞ࠡ࡯㧔')VT°㧕ߣ‫ ޔ‬ਥߦ ᦭ᯏ⋧ਛߢߩࠗࠝࡦኻ↢ᚑߥߤߦࠃߞߡ᳿߹ࠆߚ߼‫ߩࠄࠇߎޔ‬ၮ␆‛ᕈ୯ࠍ♖ᐲ⦟ߊᓧࠄࠇࠇ߫‫ޔ‬᜼േ੍᷹߽น⢻ߣߥࠆ‫ ߦߢ߹ࠇߎޕ‬6E ߦߟ޿ߡ‫ߩߎޔ‬᭽ߥ᛽಴᜼
േߩℂ⸃ߦᔅⷐߥၮ␆‛ᕈߪ߶ߣࠎߤ⎇ⓥߐࠇߡ޿ߥ޿‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬⒳‫᦭ߩޘ‬ᯏṁᇦ⋧ߣ᳓⋧㑆ߩ 6E1ߩ᛽಴ಽ㈩ࠍ⺞ߴ‫ޔ‬6E1ߩ᳓㧛᦭ᯏṁᇦ㑆ߩ')VT°ߩ᳿ቯࠍ⹜ߺߚ‫ޕ‬ታ㛎 6E1ṁᶧࠍ㧝/*01 ߢᏗ㉼ߒߡࠬ࠻࠶ࠢṁᶧߣߒߚ‫)'ޕ‬VT°᳿ቯߩߚ߼ߩၮḰࠗࠝࡦ
ߦߪ 01ࠍㆬᛯߒߚ‫ *ޕ‬016E1ࠗࠝࡦࠍ฽߻᳓⋧ ON ߣ VGVTCDWV[NCOOQPKWO 6$W# 01ࠗࠝࡦࠍ฽߻᦭ᯏ⋧ ON ࠍࡃࠗࠕ࡞↉ߦߣࠅ  ಽ㑆ᝄߣ߁ߒߡࠗࠝࡦᐔⴧߦ㆐ߒߚᓟ‫ޔ‬ਔ⋧ࠍ㆙ᔃಽ㔌ߒߚ‫ޕ‬6E1ߩಽ㈩Ყߪ‫ޔ‬ਔ⋧ࠍᶧ૕ࠪࡦ࠴࡟࡯࡚ࠪࡦ⸘ᢙᴺߦࠃࠆ᡼኿⢻᷹ቯߒߡ᳞߼ߚ‫ޕ‬01ߩಽ㈩Ყࠍ᳿ቯߔࠆߚ߼ߦ‫᦭ޔ‬ᯏ⋧ਛߩ 01ࠍ /*%N1 ᳓ṁᶧߦࠃࠅㅒ᛽಴
ߒߚᓟ‫ޔ‬᳓⋧߅ࠃ߮ㅒ᛽಴᳓⋧ࠍ⚡ᄖนⷞశๆ෼ಽశ᷹ቯߒਔ⋧ߩ 01Ớᐲࠍ᳞߼ߚ‫ޕ‬⚿ᨐ࡮⠨ኤ ࿑㧝ߪ‫ޔ‬᳓⋧㧛ࠫࠢࡠࡠࠛ࠲ࡦ &%' ⋧㑆ߩ 6E1߅ࠃ߮ 01ߩಽ㈩Ყ & ࠍ‫ޔ‬ᮮゲߦ᦭ᯏ⋧ߦ฽߹ಽ㈩Ყ߽Ⴧടߔࠆߎߣ‫ޔ‬ਔࠗࠝࡦߩ NQI& ߩᏅߪ ±

NQI&ߞߡ␜ߒߚ߽ߩߢ޽ࠆ‫ޕ‬01ߩಽ㈩Ყ߇Ⴧߔߦߟࠇ 6E1ߩߣ߶߷৻ቯߦߥࠆߎߣ߇ಽ߆ࠆ‫⇇ޕ‬㕙ࠗࠝࡦ⒖േᐔⴧ⁁ᘒߢߩ⇇㕙㔚૏Ꮕࠍ '㧘ࠗࠝࡦߩᮡḰ⒖േ㔚૏ࠍ '°㧘ᵴ㊂ଥᢙࠍǫߣߔࠆߣ‫࠻ࠬࡦ࡞ࡀޔ‬ᑼࠃࠅਔࠗࠝࡦߩỚᐲ E Ყߩ㑆ߦߪᰴߩᑼ߇ᚑࠅ┙ߟ‫ޕ‬
E

$
E NO
 
3

RT J NO3 ,org cNO3 ,orgln
F
J NO ,aq cNO ,aq
3

ࠃߞߡ 'G $TcO 4

$
ETcO
 
4

3

$
FETcO


4

$
'GNO
  RT ln

4

RT J TcO 4 ,org cTcO 4 ,org lnF
J TcO ,aq cTcO ,aq

3

4

J NO ,org J TcO  ,aq DNO 
3

4

3

3

4

4

J NO ,aq J TcO  ,org DTcO

6E1



ࠇࠆ 6$W#01 ߩೋᦼỚᐲࠍ‫❑ޔ‬ゲߦਔࠗࠝࡦߩಽ㈩Ყࠍߣ

01








E6$W#01/࿑㧝 6E1 ߅ࠃ߮ 01 ߩ᳓⋧㧛&%' ⋧㑆ߩಽ㈩Ყ
᳓⋧㧦/*01 /*6E1᦭ᯏ⋧㧦/6$W#01

᳓㧛&%' ⇇㕙ߢߩ 01 ߩ')VT°ߪ M,OQN=?ߣႎ๔ߐࠇߡ޿ࠆߩߢ‫ޔ‬6E1ߩ')VT°ࠍ M,OQNߣ᳿ቯߢ߈ߚ‫ߪࠇߎޕ‬หߓ᭴ㅧߢዋߒዊߐߥࠗࠝࡦࠨࠗ࠭ߩ %N1 ')VT°M,OQN ߦᲧߴߡࠊߕ߆ߦዊߐ޿୯ߢ޽ࠆ‫ߩઁߩߘޕ‬ṁᇦߣ᳓⇇㕙ߢߩ')VT°ߦߟ޿ߡ߽૬ߖߡႎ๔ߔࠆ‫ޕ‬
=?,%\CRMKGYKE\$%\CRMKGYKE\6WVCL,%JGO5QE(CTCFC[6TCPUC  
&GVGTOKPCVKQPQHUVCPFCTFVTCPUHGTGPGTI[QH6E1KQPDGVYGGPCSWGQWUCPFQTICPKEUQNWVKQPRJCUGUKITATSUJI, Y., KIMURA, T., KIHARA, S.

3P29
3P29

>8,<7· U(IV)v)d«£­±(ymD]p­) ÑH×R§L

|Å *#®ÎK UO22+Ë+)·Ô¨+ª©
a°>8,<7·b_n¢rg)Ów-.Cd«[Á+»[1,2]No Y>8,<7Fº®Î 'Pu(IV)% Y) ¬'* (GX1C;=E2?C¾¡ '·¤>8,<7  Pu(IV)d«[Õ¹f *)iePu(IV)
-.C U(IV)+¦ a°>8,<7·d«[ ÁtÙ U(IV)0.15M U(VI), 0.15M N2H4, 3M HNO3 +c$+Ø¿ÌXÛS¦Ýlq ³Ø-0.5V vs. Ag/AgClÜ)&(*+Ês{Ï10mM U(IV), 0.2 Þ 9M HNO3 +Ä½>8,<7·i[1,2] l q  2 @ /   h + ¦   * '  U(IV)  v  ) d «  [  9 5 4 

log KdÛ2.5cm3/0.25g-wet, 25, 1hÜÁZÍ Kd ÂVÛ·ÐÒ2@/Z+c#Ü´_µu P¼©· Kd  U(IV)d« )®Î2}Ur+U(VI)v)´
T Fig. 1 ¯:B@7C²· Silica-VP(1) U(IV)v
1
)d«[U(VI)v)jbÇ®Î}Ur mJ¶ Kd Wmz 0F,0@A²· Silica0
3
6
9
DMAA(1)®Î} 6M OÉ
Concentration of HNO3 / M
QI U(IV) !"d«Fig. 1 Adsorption of U(IV) onto monoamide resins
U(VI)v)Ë Ú Àfrom HNO3 solutions;)M~ Pu(IV)+¦ ÃÙ+
 Silica-VP(1)(U(IV)),  Silica-VP(1) (U(VI)),tÇÁ+»   Silica-DMAA(1)(U(IV)),  Silica-DMAA(1) (U(VI))
^µ¥1. M. Nogami, et al., J.
Radioanal. Nucl. Chem., 273, No.1, 37-41 (2007)
2. M. Nogami, et al., Prog. Nucl. Energy, in pressÆÈie )6E3`ÕymD]p­xÖF\kÆ¸#
A study on adsorptivity of U(IV) onto monoamide resins
NOGAMI, M., IKEDA, Y.

79    ᡼኿ᕈᑄ᫈‛ߦ฽߹ࠇࠆ Se ߩಽᨆ

3P30
3P30

㧔ේሶജᯏ᭴㧕 ٤੉የ ⵨㧘ጊ ᷕ㧘 ਛፉ ᐙ㓶

1. ✜ ⸒ 79Se ߪ㐳ඨᷫᦼߩᩭಽⵚ↢ᚑ‛ߢ޽ࠅ㧘᡼኿ᕈᑄ᫈‛ࠍಣಽߔࠆ㓙ߩ቟ో⹏ଔࠍⴕ߁
਄ߢ㊀ⷐߦߥࠆߣ⠨߃ࠄࠇࠆᩭ⒳ߢ޽ࠆ‫ޕ‬
ߒ߆ߒ 79Se ߪエ β ✢ߩߺࠍ᡼಴ߔࠆ㔍᷹ቯᩭ⒳ߢ޽ࠅ㧘ታ㓙ߦ᡼኿ᕈᑄ᫈‛ࠍಽᨆߒߚႎ๔଀ߪᭂ߼ߡዋߥ޿‫ᧄߢߎߘޕ‬ႎ๔ߢߪ㧘᡼኿ᕈᑄ᫈‛ࠍኻ⽎ߣߒߡ㐿⊒ߒߚ◲ᤃߥ 79Se ಽᨆᴺߩㆡ↪ᕈࠍ㧘ේሶജᯏ᭴ߩౣಣℂ⹜㛎ᣉ⸳߆ࠄ⊒↢ߒߚ᡼኿ᕈ
ᑄᶧࠍ↪޿ߡ⺞ߴߚ‫ޕ‬79Se ߩඨᷫᦼߦߟ޿ߡߪ㧘ߎࠇ߹ߢ 6.5×104 y ߇ᐢߊ↪޿ࠄࠇߡ߈ߚ߇㧘ᦨㄭߩ⎇ⓥߢߪ㧘2.80×105y [1]߿ 3.77×105y [2]ߥߤߩ୯߇ႎ๔ߐࠇߡ߅ࠅ㧘߽ߒඨᷫᦼ߇ᄌᦝߐࠇࠇ
߫㧘ಣಽࠪࠬ࠹ࡓߩᕈ⢻⹏ଔ╬ߦᓇ㗀ࠍਈ߃ࠆน⢻ᕈ߇޽ࠆ‫ ߢߎߘޕ‬79Se ߩಽᨆߣหᤨߦ 99Tc
ߩಽᨆࠍⴕ޿㧘79Se ߣ 99Tc ߩᩭಽⵚ෼₸߆ࠄ 79Se ߩඨᷫᦼߦߟ޿ߡ߽⠨ኤࠍⴕߞߚ‫ޕ‬
2. ታ 㛎 ౣಣℂ⹜㛎ᣉ⸳߆ࠄ⊒↢ߒߚ᡼኿ᕈỚ❗ᑄᶧ 0.5 ml ࠍណขߒ⹜ᢱṁᶧߣߒߚ‫ߩߎޕ‬ṁ
ᶧߦ Se ᜂ૕ 20 mg ߣ⎣㉄ࠍട߃㧘ടᾲߔࠆߎߣߦࠃࠅࠬ࡜࠶ࠫ╬ࠍṁ⸃ߒ㧘࿑ 1 ߦ␜ߔࡈࡠ࡯
ߦᓥߞߡ 79Se ߩಽᨆࠍⴕߞߚ‫ޕ‬หߓ⹜ᢱṁᶧߦኻߒߡ㧘99Tc ߩಽᨆࠍએਅߩᚻ㗅ߢⴕߞߚ‫ޕ‬Ԙ⹜ᢱṁᶧߩ೨ಣℂ㧘99mTc ࠻࡟࡯ࠨ࡯ߩᷝട㧘ԙTc ࠍㆶరߒ Fe ߣ౒ᴉ㧘ԚTc ࠍ㉄ൻߒ Fe ߣಽ㔌㧘
ԛTEVA ࡟ࠫࡦߦࠃࠆ Tc ߩಽ㔌㧘ԜTc ߩ㔚⌕‫ޕ‬࿁෼ߒߚ Se ᴉố෸߮ Tc 㔚⌕✢Ḯߪ㧘β ✢ࠬࡍࠢ࠻ࡠࡔ࡯࠲෸߮㜞⚐ᐲ Ge ᬌ಴ེߦࠃࠅ㧘79Se ෸߮ 99Tc ߩ β᷹ቯߦ߅޿ߡᅹኂߣߥࠆᩭ⒳ߩ᦭ήࠍ⏕⹺ߒߚ‫ޕ‬79Se ߪᮡḰ⹜ᢱṁᶧ࡝ࡦࡕ࡝ࡉ࠺ࡦ㉄14ṁᶧߣߒߡ౉ᚻߔࠆߎߣ߇࿎㔍ߢ޽ࠆߚ߼㧘 C ߩᮡḰṁᶧࠍ↪޿ߡᲧセ↪ᮡḰ᷹ቯ⹜ᢱࠍ⺞⵾ߒ㧘ᶧ૕ࠪࡦ࠴࡟࡯࡚ࠪࠈㆊ     ࠕࡦࡕ࠾࠙ࡓ
NaOH䋬Na2CO3

Cs

ࠈㆊ

ࡦࠞ࠙ࡦ࠲࡯ߦࠃࠅቯ㊂ࠍⴕߞߚ‫ޕ‬ࠈㆊ

3. ⚿ᨐߣ⠨ኤ ࿑ 1 ߦ␜ߔࡈࡠ࡯ߦࠃࠅ࿁෼ߒߚ Se ᴉốߦ㧘β ᷹ቯߦ߅޿ߡᅹኂߣߥࠆᩭ⒳ߪᬌ಴ߐࠇߕ㧘Ყセ⊛◲ᤃߦAl,Zn,U,Th

ታ᡼኿ᕈᑄᶧ⹜ᢱߦኻߒߡ᡼኿ൻቇ⊛⚐ᐲߩ㜞޿ Se ࡈ࡜࡚ࠢࠪࡦࠍᓧࠆߎߣ߇ߢ߈ߚ‫ޕ‬᡼኿ൻቇಽᨆߦࠃࠅ᳞߼ߚ 79Se
෸߮ 99Tc ߩ᡼኿⢻߆ࠄ㧘ߎࠇࠄᩭ⒳ߩේሶᢙࠍ▚಴ߒ㧘ߘߩ
99

Fe㧘ࠕࡦࡕ࠾ࠕ

Co,Ni,Sr,Ca

5

79

5

Ყࠍ᳞߼ߚ‫ ޕ‬Tc ߩඨᷫᦼߪ㧘
2.11×10 y ߣߒ㧘 Se ߪ 2.80×10 y

TEVA⥇ൻ᳓⚛㉄㧘ࠈㆊ Ⴎ㉄ࡅ࠼ࡠࠠࠪ࡞ࠕࡒࡦ

Tcࠈᶧੇ῎࡮㊀㊂᷹ቯ
β✢᷹ቯ

5

ߣ 3.77×10 y ߩ ႐ ว ࠍ ᳞ ߼ ߚ ‫ߚ ߹ ޕ‬  ࿑ 1 Se ಽ㔌ࡈࡠ࡯

ORIGEN2 ߦࠃࠅ㧘ౣಣℂ⹜㛎ᣉ⸳ߢಣℂߐࠇߚ૶↪ᷣΆᢱਛߩ 99Tc ߣ 79Se ߩේሶᢙ⴫㧝 ᡼኿ൻቇಽᨆ෸߮⸘▚ߦࠃࠅ᳞߼ߚ 99Tc/79Se ේሶᢙᲧߩᲧࠍ᳞߼ߚ‫⚿ߩࠄࠇߎޕ‬ᨐࠍ⴫ 1 ߦ␜ߔ‫ޕ‬Se ߩඨᷫᦼࠍ 2.80×105y ߣߒߚ႐ว㧘᡼኿ൻቇಽᨆߩ⚿ᨐߣ㧘ORIGEN2 ߦࠃࠆ⸘▚⚿ᨐ߇Ყセ⊛⦟ߊ৻⥌ߒߚ‫ޕ‬ඨᷫᦼ(y)

5

2.80×10

3.77×10㧙

Tc/79Se ේሶᢙᲧ104±18

77±14

113

99

[1] Ming He, et al., Nucl. Instrum. Methods B, 194, 393 (2002).
[2] Philippe Bienvenu, et al., Appl. Radiat. Isot. 65, 355 (2007).
Determination of 79Se in radioactive waste samples
KAMEO, Y., KATAYAMA, A., NAKASHIMA, M.

ORIGEN2

᡼኿ൻቇಽᨆ

79

5ÏukK

3P31
3P31

$ Ce(IV)/Ce(III)Ï]ÎW\(`tZ) Ñ¾ÁÛ_~^MÛsÉ»Ä |®l}XYÛ(-38)7¯p\'·!
Û%"Ï]ÎW\'"$ÏÓ!#×'c\nh

$Ü

N§$

À$Ü(-38)7Ï]ÎW\Û%ÏukK 1,2) Ü²¶ÛPu(IV)/Pu(III)

$*BFÏ]ÎW

Ce(IV)/Ce(III)'°Û

nitrilotriacetic acid (NTA)!desferrioxamine B (DFO)ukK$Ce(IV)/Ce(III)Ï]ÎW\'/)-C4-;D2F>6CH(CV)!+B=ÖÖÃ£(CE)!#ÇÜyÚ CV§xÛU°Ö.B40H+H;F(GC)Û{±Ð¼Ûa¬ÖÙiKCl
Ò-o]ÒÖ'°Ü©¦pH' 2-7ÛNTA«' 0.005-0.2 MÔr]ÓT/)-C4-;D2?.B='§xÛCe-NTAÜÖÃÊ 0.1  1 M Na(NO3)'°

ÜCE§xÛU°ÖGC½¹Û{±Ðº'°ÜpH 7-12 $Ce-DFOÓT-HE<5F0A.B='ÛÆ¥Í 1.5 ml min-1, 1,@FÍ 0.5 mV s-1§x
Ce(III)-DFOÓT]vµY¡©¦ÖRªx'Ü

Û0.2 mM Ce(NO3)3, 0.2 mM DFO! 0.1 M NaCl'gÜ¸¿z 2 mM Ce3+Û0.05 M NTAÛ1 M NaNO3'gpH 6.0 ¡©¦CV§xÛdÌIÖt´\+0.51 VÂ§%Ü Ï]ÎWÖR(ENTA)ÛCe(IV)/Ce(III)¨Ï]ÎWÖR+1.4 V (vs. Ag/AgCl)

S

!#wx]

$ÜENTA pH 3.5-7 IxÜÛNTA«

%

'b

ÛNTAÓ!#ÛCe(III)

Ce(IV)

0.002-0.5 MÔENTAIxÜ %"¸ÛJÅ©¦PÛCe-NTAÓTÏ]ÎWQÛH+!NTAÃÕG¸eË
x"¢
$

pH 3.5 OJ'³

$Ü­Zv$Ce(III)-NTAÓTL]vµCeIII(nta)23- (H3nta: NTA)

ÛfpHØmCe-NTAÓTÏ]ÎWbÛCeIV(nta)22- +e- ↔ CeIII(nta)23-$&Ü
0.5 mM Ce3+, 1 mM DFO, 0.1 M NaNO3'gpH 7.3 ¡©¦CE§xÛ-0.055
VIÖtÏ]ÎW¤Â§$%Ü Ï]ÎWÖR(EDFO)pH 7.3 " 10.6 q[Û10.6 -0.127 VÜpH 10.6-12 IxÜÈV096%"¸ÛpH 7.3-10.6 CeÏ]ÎWQ:E6FÃÕG¸eËÛpH
10.6-12 %Ë

'³j"ÛpH 6.7-10.8Û10.8-12 (H3dfo: DFO)$$ÜÖRªx!$Ce(III)-DFOÓTY

$LÓT]vµÛ%%CeIII(Hdfo)+!CeIII(dfo)0

&ÜÛCe-DFOÓTÏ]ÎWbÛCeIV(dfo)++H+ + e- ↔CeIII(Hdfo)+ (pH 6.7-10.8), CeIV(dfo)+ +e- ↔CeIII(dfo)0 (pH 10.8-12)$

&

Ü
1) Y. Suzuki et al., Radiochim. Acta, 94, 579 (2006). 2) Y. Suzuki et al., J. Nucl. Sci. Technol. (in press).

Redox behavior of Ce(IV)/Ce(III) in the presence of organic acids
SUZUKI, Y., NANKAWA, T., OHNUKI, T.

3P32
3P32

3P33
3P33

ãcµÜw+»¦Ï[Û(Lvæ¹ 1ðLvæ 2) żqVÒ 1^¼ÉÔ 1O}è 2[Þ]v mí(p¸®c+âÕ"Nãc±Í+Z
.?D3H §"&)(J#¦Í¶©À) '¢º¨ Ð&)(Ï+»¦+[Û¦Í+º(¨©Àex_¾ê &)(d­åÄ j )(µY¹GÈ¹uv`_( ¦Íº¨ ÂÅ))R»¬!´aª» hÓ(Ð&)(  ÌÊ¦Ï+³#¦Ía·% ºÚo¦Ï~¥á¿yzµß) '[Û a·% â $[Û)C:0D$-/F XÎi¦[x  Ð&)(Ï[Û+Sâ(# \ºÄXÎi+](Üw Ú(ÏÑ(Üw²£ãcµ©À²£Üw+»
(ÜwÖë¦[x kÁ¦[x[Û Sâ)($f ÜwÖëà(%(XÎi]Æ Ð&)(¢Äî²£ãcµ+»¦Ï[Û+Õ&°w¢s¦¢«+»(°ß Ï[ÛI(ì{ï[{ï] |ä 3ml 1C;Ù@-,DÜwG°«+W60Co +Ï¯»Ë
20kGy ³³1;4EB=5CA[é¡äÏ¨Ø¤¦Íºä+zäºä+ G T(×³Q 100eV .?D3H+kgçº¦Í[x)ÇÜwÓ+¥áÜwK²£,D829>+»<D7D¨%'i³»¶z²£ãcµ W(¦ä
+tcÏ[Û[Î]PnKÜwNãc6-Í+» Îrl(iãc6-Í SEMU+ fig.ÃPn¢ãcµ+»Î
SiO2 +»#v  G T+Ã kÁ(¦ä+tc³+Õ*
SiO2  ZrO2 ½(b+Ã)&Úo+&Ý Mz(Radiolysis of water on some oxides.
SAKAMOTO, S., MAEDA, Y., OKAI, T.

Fig. SEM image of SiO 2

3P34
3P34

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gG íØ 2ĈF ÿ 2Ĉā¨ d 3Ĉ[ã H 1

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LÖ#úæ - ©ÎÔ % ]¸ó]÷$ij/~ì! ÕCØl
Ó#-iD²F$Râ¡)$ÞĀ®ñ/èª-!#*, ¹iD²F$ÚâÞĀ$|/è¥ iD²$²î#`&ă iDÃo!$þM#à}-!/ËÊ!
ĉ£ µĊ ]¸óunöÇ ¤©_vZÎÔýÉ±® ¹iÎÔ6?7
Acï$:A<?2w HDB-6 w(Xü:620m;²¹:281Č312ċ
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478m)*,iD²/
² Râ¡ĆAODCć$é¡ FISH µ/Æ domain Bacteria domain Archaea
G-proteobacteria $­U/ä ' iD²+Ì DNA /U 16S rDNA /°Ê! PCR p/ä +. PCR Å¾#~1>A8?2@4A3?4?
2/äĈnkøW/´{ĈBLAST #*-×Üèª/äĉÛ«!à}Ċ ¹iD²F$Ä¾Vª/äÛ« Râ¡% HDB-6 w
4.61.3104cells mL-1 !¦(K HDB-4 w
5.10.7106cells mL-1 !¦(Ą
N/Ð HDB-6 w#-Râ¡%¹¹ë¢  HDB-4 w%¹·ë¢ ¦( (¹£b#Áxûº"!/Ð ' Ám $Úâ$¶$°!"-Râ¡#~-VåF$Úá$Ya%
HDB-6 w 5.63ą!¦(Ą $ë¢$ FISH µ#*- domain Bacteria $­UÀ% 61.9%!Ą Ám $Ä¾¶Ą!/Ðe- $iD²F#% J-proteobacteriaĈ¿# Pseudomonas #ðÝ"ÚâO^,ĈĄ¶%.+$Úâ2=A9#+.!à+.- $ë¢%qf!ÒS$ioÈ+²($ , R§±½Ù» 130mg/mL !Ą B£HDB-4 w# Râ¡#~- domain Archaea $Ya% 10.3Č19.1ą!Ą ;7?Äâ - Methanobacterium hungate #ðÝ"1>A?­U. $iD²F#;7?05­U.- ' ÏùõPâĈ;7?ù\#þE-Ú
â#ðÝ$ôJvøW/1>A?­U. .+ÚâiDh#-¾î
ròÑ#þE-!}.Bacterial distribution and possible activity in deep subsurface environment
NAGAOSA, K., HAMA, K., KUNIMARU T., NAKAYAMA, M., AOKI, K., KATO, K.

3P35
3P35

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Involvement of the target of rapamycin (TOR) to uptake of amino acid and ammonia
HOTTA, Y., ISOMURA, T., OYOSHI. T., USHIMARU, T., URITANI, M.

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3P36
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3P37

Analysis of thyroid disrupting activities of environmental
compounds using various assays

1

Rahman Farhana Babli, 1Yumiko Kudo, 2Akinori Ishihara and 2Kiyoshi Yamauchi
Graduate School and Engineering1, and Department of Biological Science, Faculty of Science2,
Shizuoka University

Introduction: A number of industrial, medical, agricultural and spontaneously generated chemicals are
released in the environment have the ability to disrupt endocrine homeostasis in organisms. Most of thechemicals are lipophilic and can be found in soil, sediment and water. They include several classes ofcompounds that directly interfere with the thyroid system. Chlorinated phenol compounds, such as thechlorinated derivatives of bisphenol A, detected in effluents from paper manufacturing plants.
In this study we investigated the effects of endocrine disrupting chemicals (EDCs), such as bisphenol A,
nonylphenol and their chlorinated derivatives, o-t-butylphenol and 2-isopropylphenol on[125I]3,3′,5-L-triiodothyroine ([125I]T3) binding to the Xenopus laevis plasma thyroid hormone carrier proteintransthyretin (xTTR) and the ligand binding domain of X. laevis thyroid hormone receptor β (xTR LBD),
and on T3-induced metamorphosis in X. laevis tadpoles..

Experimental procedure:Preparation of recombinant xTTR and xTR LBD: Recombinant xTTR and xTR LBD were expressedin Escherichia coli BL21 and purified from the bacterial extracts by the affinity column chromatography.
125

I-T3 binding assay using xTTR (TTR assay) and the xTR LBD (TR assay): xTTR was incubatedwith 0.1 nM 125I-T3 in 250 µl of TCN buffer in the presence or absence of 5 µM unlabeled T3 for 1.0 h at
4oC. xTR LBD was incubated with 0.1 nM 125I-T3 in 250 µl of TEDG buffer in the presence or absence of 5
µM unlabeled T3 for 1.5 h at 4oC. For the TTR assay, protein-bound 125I-T3 was separates from free 125I-T3
by the polyethylene glycol method. For the TR assay, the Dowex method separated bound 125I-T3 from free125
I-T3. Radioactivity was measured in a gamma counter.
Metamorphosis assay: Five Xenopus laevis tadpoles in NF stages 52-53 were transferred into a 1-l
glass beaker containing 0.5 l of FETAX buffer. The FETAX buffer contained dimethylsulfoxide, T3 indimethylsulfoxide, or T3 and each chemical in dimethylsulfoxide. During the experiments, tadpoles wereanesthetized and measured the body length, tail length, interocular distance, forelimb and hindlimb length.
After 5 or 7 days, tadpoles were frozen in liquid nitrozen and then stored at -80oC.

Results and discussion: Scatchard plots of T3 binding to xTTR and xTR LBD revealed a single class ofT3 binding sites, with Kd values of 7.1 nM and 0.28 nM, respectively. Among the test chemicals,
3,3′,5-trichlorobisphenol A and 2,4,6-triiodophenol were potent inhibitors of [125I]T3 binding to xTTR andxTR LBD, respectively. 3,3′,5-Trichlorobisphenol A (2 µM) and 2,4,6-triiodophenol (1.2 µM) acted as T3
antagonists in the X. laevis tadpole metamorphosis assay using endogenous T3 responsive gene as amolecular marker. 2-Isopropylphenol and o-t-butylphenol, for which xTTR and xTR LBD have weak or noaffinity, showed T3 antagonists activity in the metamorphosis assay. Chemicals detected in water
downstream of effluents from paper manufacturing plants that interacted with xTTR using the TTR assay.
Our results suggest that EDCs target the process of T3 binding to xTTR and xTR LBD resulting in theinterference with the intracellular T3 signaling pathway.