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ISSN

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RADIOACTIVSIJRVEY∵D
inJ

RadioactivitySurveyData
inJapanNumber72
March19$5

Contents

EnvironmentalandDietaryMateriaIs‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥･
佃戸∂〃Cわe/刀正∂/月〃∂/′∫血C即re′ノ
1.CoIIectionandpretreatmentofsamples‥..‥･‥‥‥‥‥‥‥‥‥･

2.PreparationofsamplesforanalysIS……･‥‥‥‥‥‥‥‥‥‥‥･

3･SeparationofStrontium･90andCesium･137……:‥‥･･･……‥･
4.DeterminationofStabtestrontium.caIciumandPotasslum…………･･
5.Counting‥‥‥‥‥...‥‥‥･‥■･‥‥‥･･‥‥･･‥･■‥‥･
6.Results‥‥.‥‥‥‥‥..‥‥‥.‥‥‥‥‥‥‥‥‥‥‥‥(1)･1Strontium･90andCesium･137inRainanddryfa"out‥‥‥‥‥‥(fordomesticprogram)
一2

Strontium･90andCesium･137inRainanddryfal10ut‥‥‥‥‥‥(forWHOProgram)(2)

Strontium･90andCesium･137inAirbornedust‥‥‥‥‥‥･‥･(3)

Strontium･90andCesium･137inServicewater‥･‥‥‥‥‥‥‥(4)

Strontium･90andCesium･137inFreshwater……………‥･(5)

Strontium･90andCesium･137inSoiJ.‥.‥‥‥･‥‥‥‥‥‥侍)Seawater

EnvironmentalandDietaryMaterials*

Sea〔血p∂〃伽e/刀血∂/月〃∂/作血Ce〃托〃

where
WaS

1.

Co"ectionandpretreatmentofsampIes

samplingtray.approximately5000cm2inarea.which
filled with

water

to

a

depth

the

at

oflcm

beginnlngOfeverymonth.
The

also glVenl

SamPlingwascarriedoutwl
few days.To
thelastRainanddryfaJloutwascoJIectedmonthlyona

was

colle

eXPeCted

Sideration was(1)Rainanddryfa"out

was

water

the effect of terresI
to be negli!

filtered after strontium

prc

SamPleswerecolle亡tedatl
just before shestoodsti"
bucl
POlyethylene
usln9aCeSiumcarrierswereadded.Thetraywaswashedwith

COllection.the sampleswt
than3byaddingconcentr

5史Ofdistilledwaterandthewashingwascombinedto
the filtrate.Thesamplewas
passed through史POlyethylenecontainers･lwas

sampJeDowex50W

andratiooflm史tol史Ofseal
acationX8.50〜exchangeco(umn(500m史Of
100mesh,Naform)atarateof80m史/min.

collected atthesamestati(

dustwascollected

precipitatorormonthsata

rate

The

samplingafilter air sampler

byanelectrostatic

for

every

three

ofmorethan3000m3permonth.
wasdoneltol･5meters
above

the

ground.

Chlorinity.

(6)Seasediments
Sediment
fortheService water.100史each.wasco"ected
intakeofthewater･treatmentPlantandatthetapafterWaS(eft

runnlngforatinthesection(1).Freshwaterwastreatedinthesame
WayaStheseⅣicewater.

Soil

an

five minutes.Water.towhich added carriers ofstrontium andcesiumimmedi･
atelyaftersampling.wasvIgOrOuSlystirredandfiItered.
Thesubsequentprocesswasthesameasthatdescribed仰

wascolleclseawatersample.1

intoaccount:
a.

The

b.

tide.
No significant

C.

ObseⅣedinthe
Mud.siItandfil(3)Servicewaterandfreshwater

Water

th

hydrochIoricacidandthen
hundredm‖ililuse.Two(2)Airbornedust
Airborne

werecontainers

wellasdepth

Aconventionalsedimentsz
COIIectingthetopfewcent

Approximatety4kgofth･叩readonaIargeporceIain
ovenatlO5to=00ctoa■

用

Tota川ietofり2)Fish.shellfishanl(9)Milk
Raw

and

milk

was

co"ectedin
wascommercialmilk

districts

producing

districts.Milkinastainlesssteelpanoraporcelaindish

drynessfoIlowed

wasevaporatedto

Seafishanl

Fish

was

rinsedfilterpaper.OnIythe

consumlng

purchasedina.

largersizedfish.andtr

bycarbonization

smaller ones.Eachsa汀

andashing.

StainlesssteelpanoraI

thesamplewasashedilb.
Shellfish(10)Vegetables
SpinachandJapaneseradishwereselectedasthe

Approximately‑

representativesforleafvegetablesandfornon･StarChshells wasroots.respectiveIy.Afterremovingsoit.theediblepartwasdried and由rbonizedinof vegetablesamplecollected oI

She"s,itwastreatedin

a

fish.

stainlesssteelpanoraporceIaindish･c.

Seaweeds

Edible seaweeds
to

water

り1ITeaFive hundred

gramsofmanufactured

thegreentearemove

Ⅵ忙ighed.driedandash

wasco"ected.carbonizedandashedinastainLesssteeI
PanOraPOrCelaindish.

Tabtelsho購deti
TabIelDetailsofsamplecollection
Frequencyofsampling

Sample=Environmentalmaterials=(1)Rainanddryfa1loutlfordomesticprogrammonthly2

forWHOprogrammonthly(2)Airbornedust(3)ServicewaterandfreshwaterlServicewater(soursewater)
2
Servicewater(tapwater)
3

Freshwater

quarterly

semiyearly(JuneandDecember)semiyearly(JuneandDecember)
yearly(fishingseason)(4)Soil
l

O〜5cm

2

5〜20cm(5)Seawater(61Seasediments

sandsurface.These

yearly(JuneorJuly)
yearly(JuneorJuly)
yearly(JulyorAugust)
yearly(JulyorAugust)v

SampleFrequencyofsampling

consumlngdistricts

4

pOWderedmilk

3

Semiyearly(FebruaryandAugust)semiyearly(AprilandOctober)

2

史〜

3

(10)Vegetables
4●

produclngdistricts

2

consumlngdistricts

yearly(harvestingseason)
yearly(harvestingseason)
yearly(thefirstharvestingseason)(11)Tea

4
5

kgkg∞

I

(12)Fish,She11fish,andseaweeds
SeafishFreshwaterfish

3

Shellfish

4

Seaweeds(1)Rain.servicewaterandfreshwater
Strontiumchloric acid from442acid by

PreparationofsamplesforanalysIS2.

4yearly(fishingseason)
yearly(fishingseason)
yearly(fishingseason)
yearly(fishingseason)hydro･

were

and cesium
eluted withthe cation exchange column.The

heating.After

insoLublepartwasfiltereda
washingswerecombinedfo

anelectricmufflefurnaceandtheashwasdissoIvedinhydrochloricacid･TheinsolubIepartwasfilteredandanalysIS.

tothepreviousthewithnitricacidtodryness,extracted with hydrochIo

residueofrainsamp[eonthefilterpaperwasashedin

washed.ThefiItratekgkgkg〜I2(5)Airborne

dust.diet.

Sheltfish.seaweeds.愉
TheseashedsamptesI

andthewashingswerecombined
and used for radiochemicaleIuateprocedureasthatdescribedanalysIS.

(2)SoitAir･dried soilwas

passedthrougha20meshsieve.Thesievedsamplewasheated.inthepresenceof
carriers.togetherwith
StrOntiumand cesiumhydroxide.The
heatedwith
samplewasthen
Chloric

acid andwashed.The

theinsoJuble

combined

soJution

part

was

(3)Seasedimen也

Separationofstrontiu(1)Strontium･90
sodiumhydro･

fiLtered andof the filtrate and

WaShingswasusedforradiochemicalanalysIS.

3.

Samplesolutions.prt

SeCtions2･(1)through2･(jSOdiumhydroxide.Afterso
theprecipitateof strontiul

WaSSeParated.Thesuperna
for cesium･137
determinat

foryttrium･90toweeks for strontium･90andattain equilibrium.Theyttrium･90wascoprecipitatedtwo

ferric hydroxide

With

and

theprecipitatewasfiJteredchemicalyieId
precipit】

activityfromcesium･1

4.

(2)Cesium･13Tsupernatant

the

tate.

Off,WaShedandcounted.

The

it.theWeighing

separated

from

the

strontium

fractioninthesolutionwasacidifiedwithhydrocMoricacid.Whilestirringthesolution.cesiumwasadsorbed
OnammOniummolybdophosphate.
After filtered off and washed with dilutenitricwasdissoIvedin2･5Nacid,theprecipitate
sodiumDeterminationq

POtaSSium

A weighed amol
treatedunderheatinga(hydrocMoricWithaliquotofashedsamp】
tish.shelけish or seewhydroxideso)ution･AmmoniawasremovedcompleteJy

chloric acid or nitrica

fromthesolutionbyboi[ing.ThesoIutionwasadjusted

When

topH8.2withhydrochIoricacidanda"owedtocooI･hydroxidewhichcameoutinthesolu･
Molybdenum

appropriatevolumew■
SamPleso山tion wasation.wasfilteredWith

standard potassil

offandwashedwithwater･lnsuch

thatcircumstanceontaminationbyrubidium･87wasofsolution

ferric chloride solution

dissoJved

with

2.5N

tium
to

the
added
hydroxide.
sodiumwas

SeParatingcalciumas･
troscopy

notnegligibleforthemeasurementofcesium･137.thefo"owing10n･eXChangeprocedurewasapplied･Afixedamountnecessary.The

hydroxidewereremoved
and moIybdenum
described above.Ethylenediaminetetraaceticacid

wasapplied

andSOrption

potassiuml
flame

and

tivelY.

AmmoniaastetrasodiumsaItwasaddedtothefiltrateandwashings.
were
a
on
Cesiumadsorbed
cationand rubidium
resin.Cesium wasseparated
byelutingwithhydrochloricacid.
exchangeTo●removlng

fromrubidium

thiseJuate

orthefiltrateandwashingsafterhydroxide.chloropIatinicacidmOlybdenumSO)utionwasaddedtoprecipitatecesium.TheprecIPl･tate

wasfiIteredontoataredpaperinademountablefilterethanoJ.Afterand washed with water andthen
fixin9thefiIterpaperonataredpIanchetteanddrying

5.

Counting
Aftertheradioc

PreCipitateswere

coulgroundbetacounters
COuntingcrateswererecovery.setf･absorpt
COntent

Ofstrontium･!

PerSamPlealiquot.Fr
these nucJidesintheo

6.Results(1)‑1Strontium･90andCesium･137inRainanddryfa"out(fordomesticprogram)(fromJan.1985toJ山.198引‑CO〃f/〃〟ed斤0/刀∧b.7β0′r/丁血p〟ム〟c∂r/0〃‑

TabIe(1)‑1:Strontium･90andCesium･137Rainanddryfallou

Preclpitation

90sr

(mm)

(mCi爪m2)

LocationJanuary,1985
Sapporo,HOKKAIDO

37

Aomori,AOMORI

2 ′0

157.0

36.6

0.001±0.0005

0.004±0.0007

Onagawa‑maChi,MIYAGI

37

6.6

0.007±0.0008

Yamagata,YAMAGATA

29

35.4

0.002±0.0006

00kuma‑maChi,FUKUSHIMA

36

9.4

0.001±0.0006

Mito,IBARAGI

2

00

4.5

0.001±0.0006

Shinjuku,TOKYO

29

4.0

0.001±0.0006

Yokohama,KANAGAWA

28

13.2

0.001±0.0005

Fukui,FUKUI

31

147.6

0.005±0.0007

Shizuoka,SHIZUOKA

29

21.0

0.002±0.0006

Nagoya,AICHI

26

18.0

0.001±0.0006

Kyoto,KYOTO

29

9.0

0.002±0.0005

Kobe,HYOGO

3

′0

8.7

0.002±0.0006

Wakayama,WAKAYAMA

2

′0

14.8

0.000±0.0005

Tottori,TOTTORI

28

190.6

0.005±0.0007

Matsue,SHIMANE

32

116.0

0.003±0.0006

Hiroshima,HIROSHIMA

2 ′0

l 2

0.005±0.0007

Matsuyama,EHIME

3 ′0

1 ′b 50.002±0.0005

Dazaifu,FUKUOKA

29

43 2

0.001±0.0005

Saga,SAGA

33

13 4

0.001±0.0005

Precipitation

90sr(days)(mm)(mCi/km2

Mito,IBARAGI

29

185.0

0.002±0.00

Shinjuku,TOKYO

29

185.2

0.005±0.00

Yokohama,KANAGAWA

30

178.3

0.002±0.00

Fukui,FUKUI

2 ′0

214.2

0.004±0.00

Shi2:uOka,SHIZUOKA

29

152.5

0.001±0.00

Nagoya,AICHI

29

132.0

0.002±0.00

Kyoto,KYOTO

29

92.0

0.002±0.00

Kobe,HYOGO

29

98.7

0.002±0.00

Wakayama,WAKAYAMA

33

44.2

0.002±0.00

Tottori,TOTTORI

29

172.2

0.004±0.00

Matsue,SHIMANE

31

117.6

0.003±0.00

Hiroshima,HIROSHIMA

29

112.8

0.006±0.00

Matsuyama,EHIME

29

80.5

0.002±0,00

Da2:aifu,FUKUOKA

29

139.0

0.002±0.00

Saga,SAGA

30

132.9

0.002±0.00

Nagasaki,NAGASAKI

29

114.0

0.002±0.00

Yonagusuku‑mura,OKINAWA

29

177.0

0.001±0.00

Sapporo,HOKKAIDO

37

157.0

0.001±0.00

Aomori,AOMORI

32

15.5

0.013±0.00

Onagawa‑maChi,MIYAGI

30

127.7

0.006±0.00

Yamagata,YAMAGATA

32

65.6

0.003±0.00

00kuma‑maChi,FUKUSHIMA

30

149.2

0.006±0.00

Mito,IBARAGI

32

126.0

0.003±0.00

Shinjuku,TOKYO

32

145.7

0.002±0.00

Yokohama,KANAGAWA

30

188.5

0.005±0.00

Fukui,FUKUI

32

161.4

0.004±0.00

Shizuoka,SHIZUOKA

32

319.0

0.001±0.00

Nagoya,AICHI

32

165.0

0.003±0.00

Kyoto,KYOTO

29

127.1

0.003±0.00

Kobe,HYOGO

31

117.0

0.002±0.00

Duration
Location

March,1985

Precipitation

90sr(days)(mm)(mCi/km2)

Nagasaki,NAGASAKI

32

186.0

0.002±0.0005

Yonagusuku‑mura,OKINAWA

34

108.5

0.001±0.0005

Sapporo,HOKKAIDO

3l

51.5

0.002±0.0006

Aomori,AOMORI

31

33.0

0.021±0.0011

Onagawa‑maChi,MIYAGI

33

138.8

0.006±0.0007

Yamagata,YAMAGATA

31

54.4

0.001±0.0006

00kuma‑maChi,FUKUSHIMA

33

225.1

0.002±0.0006

Mito,IBARAGI

3l

176.5

0.001±0.0006

Shinjuku,TOKYO

31

213.2

0.001±0.0006

Yokohama,KANAGAWA

32

253.8

0.002±0.0007

Fukui,FUKUI

31

174.7

0.001±0.0006

Shizuoka,SHIZUOKA

31

241.5

0.002±0.0007

Nagoya,AICHI

31

210.0

0.002±0,0006

Kyoto,KYOTO

30

133.9

0.003±0.0006

Kobe,HYOGO

32

171.2

0.001±0.0005

Wakayama,WAKAYAMA

4 0

88.3

0.002±0.0006

Tottori,TOTTORI

31

191.8

0.005±0.0007

Matsue,SHIMANE

31

117.6

0.002±0.0006

Hiroshima,HIROSHIMA

31

160.2

0.003±0.0007

Matsuyama,EHIME

31

131.5

0.002±0.0006

Dazaifu,FUKUOKA

31

140.3

0.001±0.0005

Saga,SAGA

37

140.5

0.003±0.0006

Nagasaki,NAGASAKI

31

129.5

0.002±0.0006

Yonagusuku‑mura,OKINAWA

28

142.5

0.002±0.0006

31

16.0

0.003±0.0006

Aomori,AOMORI

32

77.5

0.020±0.0011

Onagawa‑maChi,MIYAGI

32

110.5

0.004±0.0007

Yamagata,YAMAGATA

32

79.2

0.002±0.0008

Duration
Location

April,1985

May,1985
Sapporo,HOKKAIDO

0.002±0.0006

Duration

Precipitation

90sr

Loca也on(days)(mm)

Nagoya,AICHI

31

211.5

0.002±0.0(mCi/km

Kyoto,KYOTO

32

60.7

0.002±0.0

Kobe,HYOGO

32

167.9

0.002±0.0

Wakayama,WAKAYAMA

28

131.5

0.002±0.0

Tottori,TOTTORI

32

134.8

0.004±0.0

Hiroshima,HIROSHIMA

34

155.8

0.005±0.0

Matsuyama,EHIME

32

186.5

0.003±0.0

Dazaifu,FUKUOKA

32

193.5

0.002±0.0

Saga,SAGA

31

225.7

0.003±0.0

Nagasaki,NAGASAKI

32

229.5

0.002±0.0

Yonagusuku‑mura,OKINAWA

32

167.5

0.000±0.0

Sapporo,HOKKAID0

32

16.0

0.001±0.00nagawa･maChi,MIYAGI

30

93.9

0.004±0.0

Yamagata,YAMAGATA

31

57.9

0.002±0.000kuma‑maChi,FUKUSHIMA

31

217.6

0.003±0.0

Mito,IBARAGI

31

332.5

0.002±0.0

Shinjuku,TOKYO

31

439.5

0.001±0.0

Yokohama,KANAGAWA

32

535.3

0.003±0.0

Fukui,FUKUI

37

290.4

0.001±0.0

Shizuoka,SHIZUOKA

31

520.5

0.000±0.0

Nagoya,AICHI

32

374.4

0.002±0.0

Kyoto,KYOTO

32

344.9

0.003±0.0

Kobe,HYOGO

32

197.3

0.001±0.0

Wakayama,WAKAYAMA

30

282.0

0.001±0.0

Tottori,TOTTORI

31

262.5

0.007±0.0

Hiroshima,HIROSHIMA

2 9

420.9

0.004±0.0

Matsuyama,EHIME

31

236.5

0.002±0.0

DazaifuFUKUOKA

31

633.2

0.001±0.0

Saga,SAGA

24

553.4

0.002±0.0

Nagasaki,NAGASAKI

31

456.5

0.002±0.0

June,1985

Figure(1ト1Samp=ngLocationsofRainanddryfaJIout(fordomesticprogram)
1.Sapporo

12.Kyot0

2.Aomori

13.Kob0

3.Onagawa･lmChi

14.Wakaya閥

4.YanⅦgata

15.Tottori

5.00kuma‑maChi

16.Matsu0

6.Mito17.Hiro事hima

7.Shinjuku

18.MatsuYamさ

8.Yokohama

19.Dazaitu

9.Fukui

20.Sa9alO.Shizuoka

21.N叩a鰭ki

ll.Nagoya

22.Yonagusuku･mura

SEA

OFJAPAN

一●●●●●●●〜

12

(1)･2 Strontium･90andCesium･137inRainanddryfaJlout(forWHOprogram)什romJan.1985toJリー.1!柑5)‑CO〃J血〟ed什0〝1几b.7β0′め血p〟ム/血∂rわ〃‑

TabIe(1)･2:Strontium･90andCesium･137RainanddrYfa

Duration

Precipitation

90sr

(mm)

(mCi/km2

Location(days)
JanuaⅣ,1985
Akita,AKITA

29

81.9

0.004±0.00

Niigata,NIIGATA

29

73.9

0.002±0.00

Kanazawa,ISHIKAWA

35

275.0

0.004±0.00

Nagano,NAGANO

29

13.4

0.002±0.00

Osaka,OSAKA

29

20.7

0.001±0.00

Okayama,OKAYAMA

28

11 2

0.000±0.00

Yamaguchi,YAMAGUCHI

33

49 5

0.004±0.00

Kochi,KOCHI

28

70.004±0.00

Kagoshima,KAGOSHIMA

26

●

■

.7
12 0
●

0.003±0.00

February,1985
Akita,AKITA

29

119.1

0.004±0.00

Chiba,CHIBA

29

206.3

0.000±0.00

Niigata,NIIGATA

29

64.5

0.004±0.00

Kanazawa,ISHIKAWA

29

161.5

0.004±0.00

Nagano,NAGAN0

29

64.6

0.001±0.00

0saka,OSAKA

29

95.3

0.003±0.00

Okayama,OKAYAMA

29

95.5

0.001±0.00

Yamaguchi,YAMAGUCHI

2

164.5

0.004±0.00

Kochi,KOCHI

29

178.5

0.004±0.00

Kagoshima,KAGOSHIMA

29

189.0

0.008±0.00

Akita,AKITA

3 2

109.5

0.002±0.00

Chiba,CHIBA

32

158.2

0.001±0.00

Niiqata.NIIGATA

32

113.7

0.003±0.00

凸7March,1985

Precipitation

90sr(days)(mm)(mCi/Km2)

Akita,AKITA

31

115.5

0.002±0.0006

Chiba,CHIBA

32

180.3

0.001±0.0007

Niigata,NIIGATA

31

58.3

0.002±0.0006

Kanazawa,ISHIKAWA

30

124.0

0.001±0.0006

Nagano,NAGAN0

31

66.1

0.002±0.0007

0saka,OSAKA

32

200.7

0.002±0.0006

Okayama,OKAYAMA

31

136.0

0.003±0.0006

Yamaguchi,YAMAGUCHI

30

215.5

0.003±0.0006

Kochi,KOCHI

35

419.7

0.006±0.0007

Kagoshima,KAGOSHIMA

3 1

63.0

0.004±0.0006

Akita,AKITA

32

130.0

0.001±0.0005

Chiba,CHIBA

33

120.1

0.001±0.0006

Niigata,NIIGATA

32

165.3

0.003±0.0007

Kanazawa,ISHIKAWA

35

238.5

0.001±0.0006

Nagano,NAGAN0

32

64.9

0.002±0.0006

0saka,OSAKA

32

125.8

0.002±0.0005

Okayama,OKAYAMA

32

94.7

0.002±0.0006

Yamaguchi,YAMAGUCHI

34

219.0

0.002±0.0006

Kochi,KOCHI

32

290.1

0.004±0.0007

Kagoshima,KAGOSHIMA

32

159.0

0.003±0.0006

Duration
Location

April,1985

May,1985

June,1985
Akita,AKITA

3 1

34.4

0.003±0.0009

Chiba,CHIBA

29

349.1

0.001±0.0007

Niigata,NIIGATA

31

97.5

0.002±0.0007

Kanazawa,ISHIKAWA

27

217.0

0.002±0.0006

Nagano,NAGAN0

3 1

282.4

0.001±0.0006

0saka,OSAKA

32

327.6

0.001±0.0006

Okayama,OKAYAMA

3 1

489.5

0.002±0.0005

Yamaguchi,YAMAGUCHI

29

675.0

0.001±0.0006

Figure(1)‑2

SampIingLocationsofRainanddryfallout

1400(forWHOprogram)
1.Akita
2.Niigata
3.Chiba
4.Kanazawa
5.Nagano
6.Osaka

7.Okayama
8.Yamaguchi
9.KochilO.Kagoshima

S【A

OFJAPAN(2)Strontium･90andCesium･137inAirbornedust(fromOct.1984toJun.1985)‑CO〃r/〃〟edわm〃0.乃0′抽血p〟ム故∂わ〃‑

Table(2):Strontium･90andCesium･137inAirbornedust

Sampling

Absorption

90sr

Periodvolume(m3)(10.3pci/m00kuma‑maChi,FUKUSHIMA

10〜12

13,7360.0

Mito,IBARAGI

10〜12

11,4880.01±0.0

Niigata,NIIGATA

10〜12

13,971

0.0±0.0

Fukui,FUKUI

10〜12

19,8300.0±0.0

Hamaoka‑maChi,SHIZUOKA

10〜12

11,5260.03±0.0

Nagoya,AICHI

10〜12

9,576

0.0

Kyoto,KYOT0

10〜12

9,980

0.02±0.0

0saka,OSAKA

10〜12

8,424

0.02±0.0

Kobe,HYOGO

10〜12

10,2990.01±0.0

Tottori,TOTTORI

10〜12

9,216

0.0

±0.0

Hiroshima,HIROSHIMA

10〜12

10,7100.0±0.0

Nagasaki,NAGASAKI

10〜12

12,0520.01±0.0

Location

October〜December,1984
±0.0

±0.0

January〜February,1985
9,923

Kobe,HYOGO

0.0

±0.0

January〜March,1985
00kuma‑maChi,FUKUSHIMAlMito,IBARAGIl〜

Niigata,NIIGATAl〜

Fukui,FUKUIl〜Hamaoka‑maChi,SHIZUOKAl〜

Nagoya,AICHIl〜

Kyoto,KYOTO

l

〜

〜

3

10,8700.01±0.0

3

10,8900.01±0.0

315,4540.0

319,4770.03±0.0

311,654

0.0

±0.0

3

9,643

0.0

±0.0

3

8,601

0.02±0.0±0.0

Sa叩Pling

Absorption

Periodvolume(m3)9Location

4

Kobe,HYOGO

4

Tottori,TOTTORI

4

Hiroshima,HIROSHIMA

4

〜

〜

〜

〜

′○

′b▼ ′b▼

Osaka,OSAKA′bFigure(2)SamplingLocationsofAirbornedust
1.00kuma‑maChi

7.KYOt02.Mito8.Osaka

3.Niigata

9.Kob04.Fukui

10.Tottori

5.Hamaoka‑maChi

ll.Hiroshima

6.Nagoya

12.Nagasaki

1350

S【A OFJAPAN

(1 0‑

3

14,008

0 03

9,825

0 03

10,003

0 02

10,0970 04

(3)Strontium･90andCesium･137inServicewater(fromDec.1984toJul.198引‑C研一/〃〟ed血m〃0.7β0′抽血p〟ム庇∂如〃‑

TabJe(3):Strontium･90andCesium･137inServicewater

Location

pH(SourceWater)
December,1984
Katsusika,TOKYO

0.05±0.005

Fukuoka,FUKUOKA

0.08±0.006

January,1985
Sapporo,HOKKAIDO′090.08±0.005

Kyoto,KYOTO

7 ′○0.17±0.007●●

May,1985
0.01±0.003

Tsukui‑maChi,KANAGAWA
June,1985
Katsushika,TOKYO′b7

0.08±0.005

Inuyama,AICHI

7

0.08±0.005

Moriguchi,OSAKA

7

ユ2

0.15±0.007

Fukuoka,FUKUOKA

6 8

0.08±0.005

■

●

●

July,1985
0.07±0.005

Sapporo,HOKKAIDO(TapWater)
December,1984′0

Wakkanai,HOKKAIDO

6

Aomori,AOMORI

7 3

0.03±0.004

Akita,AKITA′b7

0.12±0.007

Fukushima,FUKUSHIMA

′b7

●

●

●

●

0.09±0.006

0.13±0.006
n

nA+n

nnち

90sr
LocationpH(pCi/史)Kagoshima,KAGOSHIMA

0.02±0.003

Naha,OKINAWA

0.20±0.008

January,1985
Kyoto,KYOTO

710.18±0.007

Wakayama,WAKAYAMA

7 9

0.09±0.005

コ

May,1985
0.02±0.003

Yokohama,KANAGAWA
June,1985
6 4

0.05±0.005

Aomori,AOMORI

7 6

0.05±0.005

Yamagata,YAMAGATA

7 00.08±0.006

Mito,IBARAGI

7 4

0.06±0.005

Katsushika,TOKYO′○7

0.07±0.008

Niigata,NIIGATA

7 1

0.10±0.006

Kanazawa,ISHIKAWA

7 0

0.09±0.006

Fukui,FUKUI

7 2

0.01±0.003

Nagano,NAGANO′0 00

0.04±0.004

Shizuoka,SHIZUOKA

7 50.05±0.004

Nagoya,AICHI′○7

0.09±0.006

Osaka,OSAKA′080.12±0.006

Kobe,HYOGO

7 5

0.11±0.008

Wakayama,WAKAYAMA

7 1

0.08±0.005

Tottori,TOTTORI

7 5

0.08±0.006

Matsue,SHIMANE

7 2

0.12±0.006

Okayama,OKAYAMA

70.09±0.006′0 ′○0.08±0.005

70.07±0.005

Hiroshima,HIROSHIMAUbe,YAMAGUCHI′b▼

Wakkanai,HOKKAIDO

Matsuyama,EHIME.1
7 4

Kochi,KOCHI

7

Fukuoka,FUKUOKA

′0

.1

9

0.05±0.004
0.05±0.004
0.08±0.005

Figure(3〉1400

SampLingLocationsofServiceWater

1.Wakkanai

19.Kyoto

2.Sapporo

20.Moriguchi

3.Aomori

21.Osaka

4.Sendai

22.Kobe5.Akita

23.Wakayama

6.Yamagata

24.Tottori

7.Fukushima

25.Matsu0

8.Mito26.OkaYama

9.Katsushika

27.Hiroshima

lO.Tsukui･maChi

28.Ub0ll.Yokohama

29.Matsuyama

12.Niigata

30.Kochi13.Kanazawa

31.Fukuoka

14.Fukui

32.Saga

15.Nagan0

33.Nagasaki

16.Shizuoka

34.Kagoshima

17.Nagoya

35.Naha18.lnuyama

SEA

OFJAPAN128

仰Strontium･90andCesium･13TinF帽Shwater仰ay.198引‑C8〃如〟ed血爪〟0.7β○′r/I血p〟ム庇∂如〃一

TabJe(4):Strontium･90andCesium･137inFreshwater

Location(Freshwater)
MAy,1985
8.5●

Kasumlgaura‑Lake,IBARAGI

Figure(4)Samp=ngLocationsofFreshwaterl.K■5umi9aura･Lako

00.16±0.007

(5)Strontium･90andCesium･137inSoiI(fromMaY1985toJul.19貼)‑CO〃r/〃〟ed什0〝丁〟0.7β0′抽血p〟ム眈∂如〃‑

Table(5):Strontium･90andCesium･137inSoil

Sampling
Location

Depth(Cm)(pCi/kg)(mCi/Km2)

(p

150±7

6.0±0.28580

88±5.68.6±0.55

200

12±3.00.7±0.191115±3.33.0±0.64

2

May,1985
Tookai‑mura,IBARAGI

0〜

5

5〜20

Akabane‑maChi,AICHI

0〜

5

5〜20
June,1985
Fukushima,FUKUSHIMA

0〜

5

5〜20

160±7
･37±4.1

2.7±0.12
3.3±0.36

July,1985
Yamagata,YAMAGATA

0〜

5

5〜20
0〜

Miyatsu,KYOTO

5

5〜20
0〜

Kobe,HYOGO

5

0〜

5

5〜20

l/

Kaimon‑maChi,KAGOSHIMA
/†

O〜
5〜20

810

4.3±0.554748±4.22.2±0.19

1700

±1.5

170

34±4.71.4±0.19290

33±3.83.6±0.41270

52±4.64.6±0.41290

54±4.514200

92±5.4

5〜20

Hiroshima,HIROSHIMA

6.6±0.32

29±3.7

150±7

5

25

±1.2

26±3.61.0±0.1351

13±3.01.4±0.30

42

1400

Figure(5)SamplingLocationsinSoi1
1.Yamagata
2.Fukushima

3.Tokai‑mura
4.Akabano‑ma￠hi
5.Miyatsu
6.Kob07.Hiroshima

8.Kaimon･maChi

S【A

OFJAPAN