ISSNNIRS･RO∠

RADIOACTIVSURVEY

D

NUM
Marc

RadioactivitySurveyD
inJapanNumber68
March1984
Contents
EnvironmentalMaterials.‥‥.‥‥‥..........‥‥....‥〃如∂〟甜e仰血/加∂ル∫仕ご即紬〃
1.CollectionandpretreatmentofsamF)les…..………….
2.PreparationofsampJesforanaIYSis...‥.‥..‥‥‥..‥

王…:器二慧i:ニミ;r芸:ごご5.Counting.‥‥‥‥‥.‥‥‥‥.‥‥‥‥‥‥‥.‥‥
6･Results…………･∴‥‥‥‥‥…‥……‥‥
Ceslum‑137in(1ト1Strontium‑90and(tordomestic program〉‑2 Strontium‑90and(torWHO
(2)
(3)
(4)
(5)

Cesium‑137in

RainanddrYfa"out.
FlainanddrYfa"out.

Progra叫Strontium‑90and

Cesium‑137inAirbornedust‥.‥Strontium‑90and

Cesium‑137in

Servicewater‥‥.

Strontium‑90andStrontium‑90and

Cesium‑137in

Freshwater..‥...

Cesium‑137in

SoiJ‥.‥....‥‥

崇｡:霊ご;慧芸ごミニ云EnvironmentalandDietaryMaterials*(5)Seawater
Seawaterwascollecte〃叩∂〟ご舶仰血/月〝∂小豆ご即J叫theeffect of terrestrialfn

expectedtobenegligiblysn

1.Co"ectionand(1)RainRain

andpretreatmentofsamples
dryfallout
dryfa"outwas

andwasaJsogIVentOWeathercI
carriedcoILected

davs.To

monthlyona

there

outwhencontaminprevent

sampIingtray,aPPrOXimate‑y5000cm2inarea.which

co11ectedatthebowofasa

WaSf‖edwithwatertoadepthoflcmatthebeglnnlng

stoodst川byscoopIngSurf

Ofeverymonth.
Thesamplewasfilteredafterstrontiumandcesium

lene

the washing

and

was

centratedhydrochloricacid

combinedtothe

filtrate.
The

sea

then

water.andstorectainers.ThesamplingequlP
wassampJepassedthroughaex‑cation(2)Airborne

dust

Airborne

dust

collected by

was

an

electrostatic

at

ofwal

slgnificant
thel

and
C.Mud,SiIt
A conventionalsedimentsz

finl

aftersampIlng.wasv.gorouslystirredandfiltered･The

COIIectlngthetopfewcentiApproximately4kg
ofthe

Subsequentprocesswasthesameasthatdescribedin

SPreadonalargeporcelain

thesection(1).Freshwaterwastreatedinthesameway

oven

added

as

the service

and

depth

ObservedinanWaterWaSleftrunnlngforfiveminutes.Water.towhichstrontium

seawatersample,

a.The
b.No

each.wascollectl

into account:

ground.

co"ected
intakeofthewate卜treatmentPlantandatthetapafterofrinsed wi
dist‖ed wat

sediments
Sediment was(3)Servicewaterandfreshwater

carriers

with(6)Seafortheatarateofmorethan3000m3permonth･Thesampling

Service water,100A

thenmil‖iters of sea water wa5
stations forthe determinat

PreCIPltatOrOrafi]terairsamplerforeverythreemonths
doneltol.5metersabovethe

thoroughly

were

and

Changecolumn(500mAofDowex50WX8.50〜100
mesh.Naform)atarateof80mA/min.

WaS

bucket.lmmediatelyal

pleswereacidifiedtoapH

carrierswereadded.Thetraywaswashedwith5Aof
distilled water

wascesiumimmediately

atlO5to1100C

to;water.

(7)TotaIdiet
Afullonedayordinar(4)SoiIand

SoilwascollectedfromtheIocationinthespacious

Water.teaand

flat area

WaSCOllectedasasamplec

without

past

disturbanceon

the surface

otherin‑betl

(12)Fish.she"fishand(9)Milk

a.Sea fish and fr
Fishwasrinsedwi

RawmiIkwascoIIectedinproduclngdistrictsandcommercialmilkwaspurchasedinconsumlngdistricts･
Mitkinastainlesstoevaporated

steelpanoradrynessfo"owed

porceIain

dishwasPaPer.Onlytheedibleby carbonization andSizedfish.andthewhoIc

ashing.

OneS.Eachsamplewas
lesssteelpanoraporc(10)Vegetables

SamPIewasashedina
b.Shellfish
Approximately4kl

SpinachandJapaneseradishwereseJectedasthe
representativesforleafvegetablesandfornon‑StarCh

WaSCO]lectedorpurcha:
wastreatedin the sam

roots.respectiveIy･Afterremov.ngsoiL.theedib]epartof
vegetablesamplewasdriedandcarbonizedinastain‑
lessateelpanoraporcelaindish,c.Seaweeds
EdibLe seaweeds(1りTeawatertoremovesandal

Fivehundredgramsofmanufacturedgreenteawas
collected.carbonizedandashedinastainlesssteelpan

surface.Thesewere
dried and ashed.

rer

TablelshowsdeOraPOrCeLaindish.

Tablel

DetaiLsofsampIeco"ection

SampleFrequencYOfsampling=Environmentalmaterials=(1)RainanddrYfallout
lfordomesticprogram

2

forWHOprogram(2)Airbornedust(3)ServicewaterandfreshwaterlServicewater(soursewater)monthlymonthlY

quarterlY2Servicewater(tapwater)

semiYearlY(JuneandDecember)semiYearlY(JuneandDecember)

3

Freshwater

YearlY(fishingseason)

1

0〜5cm

YearlY(JuneorJuly)2

5〜20cmYearlY(JuneorJulY)(4)Soi1(5)Seawater(6)Seasediments

YearlY(JulYOrAugust)YearlY(JulYOrAugust)=DietarYmaterials=(7)Totaldiet

semiyearlY(June,Novemberor

FrequencYOfsampling

Sample3

consumingdistricts

semiYearlY(FebruarYandAugust)

4

semiYearlY(AprilandOctober)powderedmilk(10)VegetablesI

producingdistricts

YearlY(hervestingseason)

2

consumingdistricts

YearlY(harvestingseason)(11)Tea

YearlY(thefirstharvestingseason)(12)Fish/Shellfish,andseaweeds
I

Sea

2

Freshwater

fish

3

Shell壬ishYearlY(fishingseason)

4

Seaweeds

YearlY(fishingseason)

Yearly(hshingseason)
fish

Yearly(hshingseason)

2.PreparationofsamplesforanaIysIS

filtered and(1)Rain.servicewaterandfreshwater

COmbinedforsubsequentr

Strontium and cesium were
elutedwithhydroch一
loricacidfromthecationexchangecolumn.Theresidue(5)Airbornedust.diet.m
Ifish.seaweeds.tea.
TheseashedsampIes

ofrainsampleonthefilterpaperwasashedinanelectricmufflefurnaceandtheashwasdissoIvedinhydrochlbric

PrOCedureasthatdescribeacid.Theinsoluble
partwasfilteredandwashed･The
filtrateandthewashingswerecombinedtotheprevious
eluatewashed.The

3.SeparationofstrontiL

and usedforradiochemicalanaIysIS.

(1)Strontium‑90
Sample(2)Soil
Air‑driedsoilwaspassedthrougha20meshsieve･The

sievedsamplewasheated,inthesoIutions.pr

SeCtions2‑(1)through2･

presence

carriers,tOgether
withand cesiumhydroxide･Thesamplewasthenheatedwithhydroch一
strontium

sodiumofhydroxide.Afters(

SOdiumtheprec[PltateOfstrontium
supernatar

SeParated.The

loricacidandtheinsolublepartwasfilteredandwashed･

cesium‑137

determination

ThecombinedsoIutionofthefiltrateandwashingswas

SOIvedinhydrochloric aci(

usedforradiochemicaIanalysIS.

WerePreC[Pltatedasoxala
soIvedin(3)Seasedments
Afterremovalofpebbles,Shetlsandotherforelgn

Calcium

nitric acid and sIbysuccessive

Iron scavenge

fur

was

matters,thesedimentsamplewasdriedinahot‑airoven

Carrier foIIowedmadeby bariurT

andgroundfinelywithamortar･Thesamplewaspassed

addition of barium

carrierlWhilestirrlng the solution.cesium

ammoniumwasonadsorbed

4.

A weighed amou
treated underheatlngl

Afterfilteredoffandwashedwithdilutenitricacid.
theprecipltateWaSdissoIvedin2.5Nsodiumhydroxide
wasof

POtaSSiummo]ybdophosphate.

SOIution.Ammonia

Determination

removedthecompleteIyfrom

Withhydrochloricacidl

SOIutionbyboiIing.ThesoIutionwasadjustedtopH8･2

Of ashed

samples

Withhydrochloricacidandal[owedtocool･Molybdenumhydroxidewhichcameoutinthesolution.wasfilteredoff

Shellfishoracid orandwashedwithwater.lnsuchcircumstancethatcon‑
tamination by rubidium‑87wasnotnegligibleforthe

oftseeweeds

nitric acid.hydnecessary.Theextract

measurementofcesium‑137,thefoIIwIng10n‑eXChangehydVOlumewithdiIutetionwasanalyzedforc

PrOCedurewasapplied･Afixedamountofferricchloride

POtaSSiumpermangana

solutioncium

wasaddedtothesoJutiondisso]vedwith2.5N

asoxalate.Atonl

SOdiumhydroxide.AmmoniaandmolybdenumhydroxideasWeredescribedabove.Ethytenediaminete‑
remOVedappliedwhenapproprI;

traaceticacid tetrasodiumsaltwasaddedtothefiltrateemissionsium

determinedwere

spectrometry.

andwashings.Cesiumandrubidiumwereadsorbedona
5.Countlng

Cationexchangeresin.Cesiumwasseparatedfromrubi‑
diumbyeIutlngWithhydrochloricacid･To

this eluate

removlngorthe

mOlybdenum

filtrate andAfter the radiochwashingsafterhydroxide,Chloroplatinicacid

PreCipltateS

Were

COun

groundbetacountersr
rateS

Were

SOlutionwasaddedtoprecJPJtateCeSium.TheprecIPl‑tatewasfilteredontoatared
paperinademountable

COUntlng

fiLter andof strontium‑90and

Afterfixing

washed

with

water

and thenethanol.

the filterpaperonataredplanchetteand

dryinglt,thechemicalyieldofcesiumwasdeterminedby
Weighingtheprec.p.tatewiththeplanchette･Radioactiv‑
ityfromcesium‑137wasmeasuredforthisprecIP[tate･C(

recovery.self‑absorptlOce

PIe aliquot.Fromthenuclidesinthe

orlglnal

(1)‑1Strontium‑90andCesium‑137inRainanddrYfaMout(fordome$ticprogram)世Om仙川.1983toJat.用糾I‑CO月山】ued存0皿〃0.660J班由puム〟co〟0′】‑

Table(1)‑1:Strontium‑90andCesiun‑137RainanddrYfallout
L｡Cati｡n㌔㌶nPre諾慧tion(m認m2,

November,1983
Matsue.SHIMANE

30

130.6

0.008±0.000

December,1983
Matsue,SHIMANE

31(∠

3 4. 50.006士0.000

37

70 5

0.002士0.000

9

4 3 5

6

65 7

0.005±0.000
0.005±0.000

January.1984
Sapporo′HOKKAIDO
Ojika‑gun,MIYAGI(∠3

Aomori,AOMORI
Yamagata,YAMAGATA

(∠

9

69 7

0.001±0.000

Futaba‑gun,FUKUSHIMA

36

39 9

0.002±0.000

Mito′IBARAGI

28

4 0 0

0.001±0.000

Shinjuku,TOKYO

29

7 1 0

0.000士0.000

Yokohama,KANAGAWA(∠

0.001±0.000

Fukui,FUKUI

25

31 3
2 89 8

Shizuoka,SHIZUOKA

29

38 5

0.002±0.000

NagoYa,AICHI

(∠

8

32.6

0.002±0.000

Kyoto′KYOTO

28

46.2

0.002±0.000

Kobe,HYOGO

36

0.002士0.000

WakaYama,WAKAYAMA

27

20.7
28.9

Tottori,TOTrORI

28

177.6

0.006士0.000

Matsue.SHIMANE
Hiroshima,HIROSHIMA

32

149.2
22.0

0.005士0.000

8Matsuyama,EHIME

37

66.5

0.002士0.000

Dazaifu,HUKUOKA

29

85.1

0.002±0.000

Saga,SAGA

35

52.3

0.002士0.000

Nagasaki,NAGASAKI

(∠9

79.0

0.001士0.000

Nakagami‑gun,OKINAWA

37

132.0

0.003士0.000

9つム

0.007士0.000

0.001士0.000

0.004±0.000Precipitation

Location

90sr

(mm)

(mCi/kNagoya,AICHI

30

96.6

0.001±0.

Kyot0.KYOTO

30

70.0

0.003±0.

WakaYama,WAKAYAMA

3 0

40.0

0.001士0.

Tottori,TOTTORI

3 0

144.4

0.006±0.

Matsue,SHIMANE

3 1

54.8

0.005±0.

Hiroshima,HIROSHIMA

30

4 7 1

0.004±0.

MatsuYama,EHIME

30

6 0 5

0.002±0.

Dazaifu,FUKUOKA

30

54 1

0.001±0.

Saga,SAGA

(∠

4 2 4

0.002±0.

Nagasaki,NAGASAKI30(∠

Nakagami‑gun,OKINAWA

30

4 2 5

0.004±0.

March′1984
Sapporo,HOKKAIDO

81.0

0.001±0.

Aomori,AOMORI

32.8

0.012±0.

4

【｣J

6

0.003±0.

Ojika‑gun′MIYAGI

3 1

42.6

0.004±0.

Yamagata,YAMAGATA
Futaba‑gun,FUKUSHIMA

3 3

61.8

0.002±0.

3 1

30.9

0.002±0.

Mito,IBARAGI

33

48.5

0.003±0.

Shinjuku,TOKYO

33

86.0

0.004±0.

Yokohama,KANAGAWA

3 (∠

98.3

0.002士0.

Fukui,FUKUI

30

121.2

0.004±0.

Shizuoka,SHIZUOKA

33

104.5

0.002±0.

Nagoya,AICHI

33

82 5

0.001±0.

Kyot0.KYOTO

33

4 4 9

0.004±0.

Kobe,HYOGO

3 (∠4 (∠ 50.003±0.

WakaYama,WAKAYAMA

31

4 8 8

0.002±0.

Tottori,TOTTORI

33

84 8

0.005±0.

Matsue′SHIMANE

3 つム

51 1

0.005±0.

Hiroshima,HIROSHIMA

33

6 3 0

0.004±0.

MatsuYama′EHIME

30

【〇
6 0

0.002±0.

Dazaifu,FUKUOKA

33

8 0 3

0.003±0.

Saga,SAGA

2 7

6 8 0

0.001±0.

Nagasaki,NAGASAKI

3 (∠

74 5

0.002±0.

Nakagami‑gun,OKINAWA

(∠

175 0

0.003±0.

8Precipitation

Location

90sr

(mm)

(mCi/km2)

NagoYa,AICHI

30

143.0

0.002±0.000

Kyoto′KYOTO

3 0

69.2

0.002±0.000

Kobe′HYOGO

つム

8

69.3

0.002±0.000

32

113.7

0.003±0.000

Tottori,TOTTORI

30

144.7

0.003±0.000

Matsue,SHIMANE

32

120.4

0.004±0.000

Hiroshima,HIROSHIMA

30

180.8

0.004±0.000

MatsuYama,EHIME

33

162.5

0.001±0.000

Dazaifu,FUKUOKA

30

71.0

0.001士0.000

Saga,SAGA

36

171.8

0.000±0.000

Nagasaki,NAGASAKI

30

156.5

0.003±0.000

Nakagami‑gun,OKINAWA

30

162.5

0.001±0.000

WakaYama,WAKAYAMAMay′1984
3

Aomori,AOMORI

3

つ一2

Sapporo′HOKKAIDO

34 0

0.003±0.0001

3 7■ (∠

0.021±0.001■
0.005±0.000J

34

Yamagata,YAMAGATA

3 2

54 4

O.003±0.000■

Futaba‑gun,FUKUSHIMA

34

75 3

0.004±0.000

Mito,IBARAGI

3 (∠

51.5

0.003±0.000

Shinjuku,TOKYO

3

(∠

74.0

0.001±0.000

Yokohama,KANAGAWA

3l

75.6

0.003±0.000

Fukui.FUKUI

3

94.3

0.002±0.000

Shizuoka,SHIZUOKA

3

つ†2

Ojika‑gun,MIYAGI

88 4

105.5

NagoYa′AICHI

32

110.0

0.001±0.000

Kyoto′KYOTO

32

99.1

0.002±0.000

Kobe′HYOGO

3 5

133.9

0.002±0.000

WakaYama,WAKAYAMA

3 つム

70.2

0.001±0.000

Tottori,TOTTORI

32

62.9

0.005±0.000

Matsue,SHIMANE

3 1

45.8

0.001±0.000

88.0

0.004±0.000

つム

0.003±0.000

Hiroshima,HIROSHIMA

3

MatsuYama,EHIME

3 (∠

121.0

0.002±0.000

Dazai壬u,FUKUOKA

3 つム

125.0

0.002±0.000

Saga,SAGA

34

77.2

0.001±0.000

Nagasaki,NAGASAKI

33

91.5

0.002±0.000

NFlkaロami̲Gun.0KINAWA

35

147.0

0.001±0.000

90sr

Precipitation

Location(mm)(mCi/kKobe,HYOGO

(∠9

290.7

0.005士0.

Wakayama,WAKAYAMA

3 (∠

313.1

0.004±0.

Tottori,TOTTORI
Hiroshima,HIROSHIMA

33

182.8

0.007±0.

3 つム

295.7

0.005士0.

Matsuyama,EHIME

3 (∠

384.0

0.002±0.

DazaiLu,FUKUOKA

3 つム

324.7

0.000士0.

Saga,SAGA

30

381.5

0.002士0.

Nagasaki,NAGASAKI

3 (∠0.003±0.

Nakagami‑gun,OKINAWA

35

405.0
188.5

0.004±0.

July′1984
Yamagata,YAMAGATA

3l

0.001士0.

Futaba‑gun,FUKUSHIMA

3 つム

0.001±0.

Nagoya,AICHI

3 1

0.003士0.

Kobe′HYOGO

330.001±0.

Figure(1)‑1SamplingLocationsofRainanddryfallout

1.S叩叩r0

11.川和○叩

2.Aomoriほ3.0帥呵叩13.Kobo

4.Yamagata

川.仙血叩mら.Futaba‑gun

15.To¶ori

6.Hito16.Mat引用

T.Shinjuku

lT.Hiro$hima

町OtO

8.Yokohama

t8.H摘u甲川帽

9.Fukui

19.Da王8iIu

lO.Shi王uOb

20.S叩さ
2l.一喝aSaki
22.Mak叩ami‑gun

1350$EAOFJAPAlu
4

汐

●

5
1300

12ク′

̲‖

10

6(
あ′

(1)‑2 Strontium‑90andCesium‑137i什RainanddrYfa"out(forWHOprogram)(fromJan.1984toJuI.1984)‑COJつ伽ued〟oJコ〃0.660J血spuムムco#oJつ‑Table(1)‑2Strontium‑90andCesium‑137FlainanddrYfa"out
L｡Cati｡nJanuarY′1984
Akita,AKITA㌔芸n

Pre諾ion(m芸ヲ…m2,

29

85.1

0.003±0.000

Niigata,NIIGATA

つム

8

110.1

0.005±0.000

Kanazawa,ISHIKAWA

35

342.0

0.004±0.000

Nagano,NAGAN030.90.001±0.000

0saka,OSAKA

29
28

56.9

0.004士0.000

OkaYama,OKAYAMA

(∠8

42.1

0.001±0.000

YamaguchilYAMAGUCHI

29

Kochi,KOCHI

41.5
67.7

0.003±0.000

28

Kagoshima,KAGOSHIMA

つム8

53.6

0.007±0.001

Akita,AKITA

3 つム

77 1

0.001士0.000

Niigata,NIIGATA

3O

52 4

0.001±0.000

Kanazawa,ISHIKAWA

3 1

Nagano,NAGAN0

0.004±0.000

FebruarY,1984

つム

17 0

0.004±0.000

3 0

40 0

0.001±0.000

0saka,OSAKA

30

79 7

0.002±0.000

OkaYama,OKAYAMA

30

45.5

0.001±0.000

Yamaguchi,YAMAGUCHI

30

61.0

0.008±0.000

Kochi,KOCHI

30

86.0

0.004±0.000

Kagoshima′KAGOSHIMA

30

71.6

0.008±0.001

Chiba,CHIBA

30

51.6

0.001±0.000

Akita,AKITA

31

70.5

0.002±0.000

Niigata,NIIGATA

33

55.0

0.005±0.000

Kanazawa,ISHIKAWA

33

132.5

0.006±0.000

Nagan0.NAGAN0

33

32.9

0.002±0.000

0saka,OSAKA

3 1

56.8

0.003±0.000

OkaYama,OKAYAMA

33

57.2

0.002士0.000

Yamaguchi,YAMAGUCHI
Kochi,KOCHI

33

77.0

0.008±0.000

30

69.4

0.004±0.000

March′1984

Precipitation

Location

90sr

(mm)

(mCi/kOkayama,OKAYAMA

30

101.3

0.002±0.

Yamaguchi,YAMAGUCHI

30

105.0

0.004±0.

Kochi,KOCHI

33

369.4

0.008±0.

Kagoshima′KAGOSHIMA

3 (∠
31

265.0

0.004±0.

80.90.002±0.

Akita,AKITA

33

93.5

0.003士0.

Niigata,NIIGATA

3 (∠

59.3

0.002±0.

Kanazawa,ISHIKAWA

3 (∠

104.5

0.002±0.

Nagano,NAGAN0

3 (∠

67.9

0.002±0.

0saka,OSAKA

32

162.7

0.001±0.

Okayama,OKAYAMA

32

76.4

0.001士0.

Yamaguchi,YAMAGUCHI

3 つム

70.0

0.006±0.

Kochi,KOCHI

33

100.6

0.005±0.

Kagoshima,KAGOSHIMA

3 (∠

145.5

0.002士0.

Chiba′CHIBA

3 1

50.8

0.001±0.

Akita,AKITA

3l

123.6

0.002±0.

Niigata,NIIGATA

3 (∠

67.6

0.005士0.

Kanazawa,ISHIKAWA

3 (∠

249.0

0.001±0.

Nagano,NAGAN00saka.0SAKA

32

154.4

0.003±0.

32

332.8

0.001±0.

Okayama,OKAYAMA

32

202.6

0.002±0.

Yamaguchi,YAMAGUCHI

32

323.5

0.002±0.

Kochi,KOCHI

3 1

601.1

Kagoshima′KAGOSHIMA
Chiba,CHIBA

3 つム

250.0

0.009±0.
0.002±0.

32

250.4

0.003±0.

Chiba,CHIBA
May′1984

June′1984

July.1984
Akita,AKITA

3 2

0.002±0.

Chiba′CHIBA

3 1

0.002±0.

Figure(1)‑2SamplingLocationso‖極nanddrYfallout
l.Akita
2.蝋脚ta3.Kana王aWa
ヰ.舶即n05.Osaka
6.Ok叩ama
T.Y糾m柑uChi
8.Ko￠hi
9.Kagoshima
lO.Chiba

1350

SEA

OFJAPANPACIFICOCEAN

(2)Strontium‑90andCesium‑137inAirbornedust(fromOct.1983toJun.1984)‑COヱ】血ued〟0皿〃0.660/血5puムムcロガoJ】‑

TaMe(2):Strontium‑90andCesium‑137inAirbornedust
L｡Cati｡nS器慧g慧=≡‡≡琶

(1｡‑3:g,October〜December,1983
Mito,IBARAGI

10〜1210′5080.03±0.

Niigata,NIIGATA

10〜1214′4680.05±0.

Fukui,FUKUI

10〜1220′3320.03±0.

Ogasa‑gun,SHIZUOKA

10〜12

11′6600.04±0.

NagoYa,AICHI

10〜12

9′457

0.04±0.

Kyoto′KYOT00saka,OSAKA

10〜12

9.101

0.01±0.

10〜12

7.776

0.02±0.

Kobe,HYOGO

10〜12

10′0470.03±0.

Tottori,TOTTORI

10〜12

Nagasaki′NAGASAKI

10〜12

November〜December′1983
Futaba‑gun,FUKUSHIMA

11〜12

Hiroshima,HIROSHIMA

11〜12

9′889

7′535

l

Niigata,NIIGATAl

Fukui,FUKUIlOgasa‑gun,SHIZUOKAlNagoYa,AICHIl

Kyot0.KYOT0

l0saka,OSAKAl

Kobe,HYOGO

lTottori,TOTTORIlHiroshima,HIROSHIMA

l

〜

〜

〜

〜

〜

〜

〜

〜

〜

〜

0.00±0.
0.00±0.

0.01±0.

10′0240.00±0.

9.502

0.02±0.

39.807

0.10±0.

314′3920.02±0.

3

20.1000.02±0.

311′4450.10±0.

310′2770.10±0.

JanuarY〜FebruarY,1984
Nagasaki,NAGASAKI
JanuarY〜March,1984
Mito,IBARAGI

11.95837′5810.10±0.

37.776

0.02±0.

310′1500.00±0.

3
310′0020.10±0.

10.0780.10±0.

12′5460.04±0.

FebruarY〜March,1984

Futaba‑gun,FUKUSHIMA

2〜3

Pre諾慧tion㌔芸n

L｡Cati｡n(m芸完m2,

May〜June,1984
5〜6

KYOt0.KYOT011′1170･00士0･03

Figure(2)SamplingLocationsofAirbornedu$t
l.Futaba‑ウリn

丁.K†Ot02.Mit0l.Osaka3.附加血9.Kob●

4.Fukui

10.To¶ori

5.Ogさ$a一別川

ll.Hiro$hima&仙岬甲l乙H叩轟i鵬i$EA

OFJAFAN汐甘IStrontium‑90andCo$ium‑13TinSorYic￠Wat即
仲OmDoc.1983toJuI.柑84〉‑CO刀〟カリedム℃皿〃0.660J血5puム〟cロ〟○∫】‑

Table(3):Strontium‑90andCesium‑137inSerYicewater
Location

pH(SourceWater)
December,1983
Katsusika,TOKYO

7 1

0.06士0.005

Tsukui‑gun,KANAGAWA

7 4

0.02士0.004

Moriguchi,OSAKA

7 0

0.16±0.007

Fukuoka,FUKUOKA

6 5

0.05±0.004

Sappor0.HOKKAIDO

6 8

0.07±0.005

Kyoto′KYOTO

7 3

0.18±0.007

Katsushika,TOKYO

6 9

0.07±0.005

Tsukui‑gun,KANAGAWA

8 2

0.02±0.004

InuYama′AICHI

6 9

0.10±0.006

Moriguchi,OSAKA

7 0

Fukuoka,FUKUOKA

6 3

0.19士0.008
0.11士0.006

7.1

0.09±0.006

Wakkanai,HOKKAIDO
Aomori,AOMORI

60.07±0.005

Katsushika,TOKYO

6

Yokohama,KANAGAWA
Fukui,FUKUI

770.01±0.004

Shizuoka,SHIZUOKA

7

0.04士0.004

Matse,SHIMANE

7

0.06士0.005

Ube.YAMAGUCHI

7

0.07±0.005

Kochi,KOCHI

7

0.07士0.005

Fukuoka,FUKUOKA

60.08±0.005

Saga,SAGA

7

JanuarY′1984

June′1984

July.1984
Sappro′HOKKAIDO(TapWater)
December,1983
7374234223

7.20.03±0.004
0.05±0.005
0.03±0.004

0.06±0.005

L｡｡ati｡nJune′1984
Wakkanai,HOKKAIDO

PH

6･67･27･07･16･7(忍2,
0.06士0.005

Yamagata,YAMAGATA

0.04士0.004
0.03士0.004

Mito,IBARAGI

0.03±0.004

Katsushika,TOKYO

0.06±0.005

Aomori,AOMORI

Yokohama,KANAGAWA

7･06･86･68･06･8

0.04士0.004

Niigata,NIIGATA

0.11±0.007

Kanazawa,ISHIKAWA

0.04±0.004

Fukui,FUKUI

0.02±0.003

Nagano,NAGANO

0.05士0.005

NagoYa,AICHI

0.05±0.005
7･66･46･86･97･47･56･86･57･2
0.10±0.006

Osaka′OSAKA

0.12±0.006

Kobe,HYOGOWakaYama,WAKAYAMA

0.11±0.006

Tottori,TOTrORIOkaYama,OKAYAMA

0.09士0.006

Hiroshima,HIROSHIMA
Ube.YAMAGUCHI

0.11±0.006
0.10±0.006

MatsuYama,EHIME

0.06士0.005

Shizuoka,SHIZUOKA

Fukuoka,FUKUOKA
Saga,SAGA
Nagasaki,NAGASAKI
Kagoshima,KAGOSHIMA
Naha,OKINAWA

0.09±0.006

7･17･25･87･27･1一7･4

Kochi,KOCHI

0.08士0.005

0.05±0.005
0.08±0.006
0.06±0.005

0.08士0.006
0.03±0.004
0.15士0.007

JulY.1984
Akita,AKITA

7･2

0.11士0.006

Figure(3)SamplingLocationsofServiceWater
1400
1.Wakkanさi

1丁.K†OtO

2.S叩pOr0

川.Morigu血i

3.Aomori
4.Akita

19.0引血a5.Yam叩血

21.W血叩帥a

6.Hito22.Tottori

T.Kat$u$hika

23.M8也u●

8.Tsukuトgun

24.Ok叩ama

9.Yokohama

25.Hiro如血相

lO.Miio血26.Ub●

11.Kana王aWさ

2丁.M摘u叩ma

12.Fリーui

28.Kochi

13.H叩州○
14.Shi王uOb

29.Fukuoka

20.Kob0

30.S叩a

15.H叩○叩

31.N叩a$油i

16.lnu岬ma

32.K叩○$hima
33.Ⅳ山川1350

SEA

OFJAPAN●13

PACIFICOCEAN

(4)Strontium‑90andCesium‑137inFreshwater(tromM叩.柑84)‑CO刀血ued存0皿Ⅳ0.660J血5pUムムcロ〟oJコー

Table(4):Strontium‑90andCesium‑137inFreshwater
LocationpH(Freshwater)May′1984
Kasumigaura‑Lake,IBARAGI

0.11±0.006

8.0

Figure(4)SamplingLocationsofFreshwaterl.K舶umt脚ura‑L鵬○

1350

$EA

OFJAPAlV

汐

1

(引

Strontium‑90帥d

C●Sium‑13Tin

Soil

世Om M叩.1984toJul･柑84I
̲COヱ】血ued丘･0皿〃0.660J血5puム〟coむ0∫】‑

Table(5):Strontium‑90and Cesium‑137in

Soil

90sr

Sampling
LocationMaỳ1984
T00kaimura,IBARAGI

Atsumi‑gun′AICHI

Depth(cm)(pCi/kg)

0〜5

310.0±10.0

5〜20

140.0士7.0

9.7±0.48

0〜5

18.0±

3.6

1.1±0.22

5〜20

18.0士

3.6

3.9±0.75

0〜5

60.0士

4.8

2.1士0.16

5〜20

26.0士

3.8

4.2±0.610〜5400.0士11.0
730.0士15.0

12.0士0.30

5〜20
0〜5

93.0±

5.6

5〜20

22.0士

3.4

5.7士0.34
2.3±0.35

0〜5110.0士6.0

5〜20

94.0士

5.9

0‑5

63.0±

5.2

2.3±0.19

5〜20

80.0±

5.8

23.0士1.70

0〜5

38.0±

4.3

1.8士0.21

5〜20

38.0士

4.3

3.5±0.41(mCi/km2)
9.5±0.29

June′1984
Gotenba,SHIZUOKA

July′1984
Kawabe‑gun′AKITA

Yamagata,YAMAGATA

Nagano,NAGANOMiYatSu.KYOTO

Ibusuki‑gun,KAGOSHIMA

73.0±1.50

5.2±0.31
9.9±0.62

Figure(5)SamplingLocationsinSoil

l.Kawab●‑gun
2.Y帥仙卵ta
3.T00kaimura
4.M叩州05.Gotonba
6.At$umトgun
T.Mi岬tSu
8.1basリーi･gun$EA

OFJAPANPACIFIC

OCEAN