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ISSN O441-2516 NIRS-RSD-89 RADIOACTIVITY SURVEY DATA in Japan Part 2 =Dietary Materials= NUMBER 89 March 1990 NationalInstitute of RadiologlCa Chiba,Japan

RADIOACTIVITY SURVEY DATA in Japan1zd care†ulty by dlrモCt aPptl¢atlon o†ga9†伽, 抑い麒=ran9flrld toa pα( しalndl$h州=hona hld at150 ln a【lし餌trt¢削†机l†urnacl.

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  • ISSN O441-2516 NIRS-RSD-89

    RADIOACTIVITY SURVEY DATA

    in Japan

    Part 2

    =Dietary Materials=

    NUMBER 89

    March 1990

    NationalInstitute of RadiologlCalSciences

    Chiba,Japan

  • Radioactivity Survey Data

    inJapan

    Number 89

    March1990Part 2 =Dietary Materials=

    Co〔tentS

    Envけon汀把ntaしand Diモtaryねteriaし$

    (Japan Chem竜caしA〔aしysis Ce[ter)

    ■V

    g

    a

    P

    蝕ししそ(tion a〔d p代t「モatment Of sampしes l’ヽ一’ヽ-・▲丁 ムT 【.ノ 【.ヽノ ′▲U

    1 2 TJ▼ /▲T 亡「ノ ′∧)

    汁eparat血of sampしes for anaけSうs

    鎚paration of Strontium-90and Ces沌m-157..…

    kter雨nat弓0〔0†Stabしe Stront与川I飴しCium a雨Potassium

    飴unt両

    Resuしts

    in TotaしDiet…‥‥‥‥…‥…‥‥‥.‥‥‥……‥‥

    i〔Rice‥‥‥‥‥‥‥‥‥‥...‥‥‥.‥..‥‥‥‥‥‥‥

    (1) Strontiu爪一90a〔d鎚siu肝-157

    (2卜1Stroれtうuln一卯a【d Cesium-157

    (prducin9district§)

    -2Stro〔tうum-90a〔d Cesう脚-157

    (co【Suming district∫)

    (5卜1Strontium-90訂d C引舟∬-1訂

    in Rice…………………………………………7

    圧M-しk…………………………………………8

    (prod】Cin9districts fo「d馴eStic prog「am)

    in M圧k…………………………………………9 O

    in M弓Lk………‥.………………………………18

    拍〉egetabLes……………………………………11

    in V印etabしes……………………………………12

    うn Sea Fish……….‖……………….………….15 in Fre∫hvater Fi∫h….…………………..……….15

    i【SheしL†ish………………..…………………‥1d i〔おavモモds……………………………………‥17

    -2Stro〔tium-90and Cesう皿-157

    (pr(duci悶districts†0「リH

    -5Strmtiu附90and Ces雪肌-157

    (co〔SUmi〔g districts)

    (i)-1Stro〔tium-90and Cesium-1さ7

    (p「duchg dls【「icts)

    -2Strontう皿一閃and Cesi∬r157

    (consum両dist「1cts)

    (5) Stro〔tium-90and Cesiu爪-157

    (引 Stro【tiu爪-90a〔d Cesium-157

    (7) StrontiumづO a〔d Cesうum-157

    (8) Stro〔tiu爪-90a〔d Cesi】m-157

    7.払〔tentS Of F沌ure(Seしected L∝atね〔∫)

    Editted by Nationallnstitute of RadioIogicalSciences,under the supervision Of Science and Technology Agency ofJapanese Government.

  • thllffl¢t O†t餅rlきtrialfr19h〉さtlr fr州rt㈹r§Vさき

    IXPl¢tOd tobln印しIgibLy‡肘LL.A印胱lさL(削,ld灯さ-

    tlmvaきさし§Oglvln tOVlathlr(仰dit一肌亨.Thモ相即-

    し雨 鳩§翰「rlldout 血n th即l協!柏ralnfさu for

    theしa9t fevday!.TopreYent COnt州1natlon,Vater ,a仰しl‡㈹r=○しLl(t由一t thモb仇Ofaき岬Ll咽ねさt

    just b●†訂モShe st00d3t圧しby9C叩i博引汀†紙○冊t●r

    U9in9一押しylthyし○㈹b眠klt.Ⅰ闇diさteLyさft餅th●

    ¢OLしl(tI訓,tho対即し村里用都冊廿旭toさP目し仇即

    than5byaddl咽(OrにIntrat●d hydr∝hし訂ic紙Idlna ratlo oflRAtoIA of$eaVater-ard then!tOredin 20月poしylthyt即e¢Ontai冊「,.Th●l坤ttn9明utP加【t§

    aき∨○=a9 COnta血「§ ㈹rO tho柑明hly r摘由 州h

    dilutlhydr∝:仙0ri亡 君Id さ鵬 tbn v=h d‡§=ししed

    Vatlr b疇†訂IU引L T岬hu〔drd mlL=litlrさ0†きIa

    vat訂Va§aし§○(OLし餌tld at thl弱闇$tat血9fαihl

    dlt桝Ⅶ-natlonof¢hしⅣlnttr.

    ほ)S庖=矧柚脾〔t§

    Sldl㈹【t Va9 ¢○しIl¢tdln thlS珊訂Oa粥that

    f訂thl§OaVater細伸しe,taki咽tho foLl00in9(「栂-

    ria hto a(C仇nt:

    さ.Th=如tho†vatlr●X¢ld!1tlatしwtldl. b.NoきIgn椚¢antきdl舶〔taL掛値伽ntl§鵬㈹rV-

    1dln the〉l(仙ty8f¢脈打n.

    ¢.仙d■§lしt a鵬‖㈹Sa鵬arlPrlねrabし●.

    Aco〔Ventlonaし弼引胱〔t§膿Pし座dovt(l伯9uId fα

    00肌郎tl叩thlt叩†糾Clntt肝tlr§d飢什fポl§dl脾-

    【t.App「OXi桐tOLy仙gof th=朋両Inwt明両ht va9 印read ma5tlnしIS=t如=情haft訂「卵仇咄Id the PObbし抽!如しL§ a鵬 othlr f椚再n 鮎抽IaL‡- さ鵬

    dr旭=m=恒l叩OV帥∩郡山td atlO5℃.

    (7)旬taL dll一

    人仙し 飾Iday 併dtnきry dllt血L血l叩 thrl● ㈹さし!I冊tlrItlaさ雨othor h-ktvlln§価k!f訂flvo

    P打SOn5〉a9血t餌tld粥aさ御し10†■totaL dllt■.

    Tk9a伸しIl【aしar91拍hし199‡tllL囲nVa§¢arbo〔一

    1zd care†ulty by dlrモCt aPptl¢atlon o†ga9†伽,

    抑い麒=ran9flrld toa pα(●しalndl$h州=hona§hld

    at150℃ln a【lし餌trt¢削†机l†urnacl.

    (8)RtcI

    Poしl§鵬d ri¢lVa=01しl(tldlnpro血血=桐tr卜

    Ct§at thモh椚酢【綱川n 柑制止町椚a!∨如nnlV (「叩§00rl†汗§t Put On紺しl.Th●拍叩Il冊9¢arl抑l卜

    甜d洲d朋血dレ==矧Ⅶ止痛い廿油

    Envir8n㈹ntaしand D‡¢tary舶tlriahH

    りapa〔ChemうcaしAnaしysIsCenter)

    1.蝕し一郎tl研and protreat㈹nt OfきamPしe§

    川 Rain and dryねuout Ra-n さnd dry fauout vaき(0ししoctモd鵬nthLyo【一

    拍叩=噂tray,aPPrOXt舶t恒5000cm2inar朗,Vhi¢hvas f圧しed vith vater toadepth oflc爪at thい細雨ning Of every爪Onth.

    Stro〔tium and ceきium¢arrilrきOLutions ㈹rladdd aftlr th8きa即しlVa5f圧tered.The trayva§Va9hed vlth 5月 of distmedvaterand thlVaきhi叩Va=珊bl【d to the fうLtratl.

    The$amPLe vas pa!!ed throu9h acat10neXChan9e COしu爪n(500れゼofぬvex5帥X8I50--100附§hlNa form)

    at a rate fL訓Of80m‘/min.

    (2)A‡rborne dust

    Al止αnせ du§t Vaき COLし○(tOd by anlL餌trO§tatle P「eCIp臨to「0r a filt打きlr 9a叩Ler ね「8V訂y three 帆nt厄at arateof附モthan5800mき印rmnth. Thモ きamPL摘vas doneltol.5㈹ter9above thモ9rOu【d.

    (さ)ServIcevater and†re寺山ater

    Servうce vater1100 月 eachlVa§COししectld at thせ

    intakeof th=ater-treatment Pね【t a〔dat thせtaPafter

    Vater VaS tdt ru【nlng for fiv¢m加teき.Stront血=血

    CeSiumcarriers㈹「=d由d【o thefiLt…dvatorきampしe. The sub無qu即t PrOCeSS VaS the sa眠aきthat de§Crlbed‡n

    tho紙t】0〔(1).Frl§hvater〉a‡tr朋tedln thl§a㈹Vay

    aきthせ§訂ViclVater.

    (l)SoIL

    S01しvaミCOLしected†r珊th¢し∝atimlnth=PaClo- 】=鵬fLさt arla Vithout pa9t§urfaee引きtUrba眠○¢au9ed

    by dust5t訂mき一号n机釧and out†血due toprecipitat沌【,

    モtC‥ Any pしさ(l§し∝atモd und¢r trモモ§lna forモ§t,lna

    StOny arモa O「1【きIde o†rjver banks㈹rlaⅧldd. SoiL

    〉a§take〔f「珊t〉O LaylrきOf dif†lr即t dlPt厄,0-5c巾and

    5-20用.Th=Oiししumpき㈹reCruShed byhan由anddrミed l〔adry一昭OVen reg山atモdlO5℃.The§Olしva§th削 PaSきed throu9ha2間=両肌 tO r馴旧Ve pしant r∞t5 and

    P¢bbLeき.

    (5)Sea〉ater

    Sea冊t訂Va§¢○山ctd at thlfixed statl抑=血㈹

    ★ S印しeき㈹「=ent tOthlCentlr fr伽52¢0【traくtld prlflCtUrl‡.

    (1)

  • (12)FishlSheしし†ish a〔dさea㈹由s

    a.Sea fish and fres血ater†ish

    F†sh vas rinsed vith vater and bLotted山th a fiしter paper.0【しy the edibしe pa「t vas usedi〔CaSe

    O干しar9er Sized fish,and the血0しe part vas usdi〔

    case of s旧ししer o〔eS. Each sa叩しe vas㈹ighed a〔d

    Pしacedi〔a Stahしess steeしpa〔0r a POrCeしaう〔dish.

    After carbo【ized,thモSamPしe vas ashedina〔eしectrlc

    爪Uffしe furnacモ.

    b.Shモししfish

    Approximteしyikg o†sheしぃうsh hc山ding the She=s vas coししected or p】rChased. After remv両

    the5heししs,it vas treatedin the s即檜Vay aS that

    for thモSea†ish.

    C.Sea㈹ds

    Edうbしe seaⅥさ由s㈹re COししected and rう〔Sd 両th

    Vater tO re冊Ⅳe Sa〔d and other adhe「両肘【te「S O〔

    the surface. Thesel恰re remVed of excess vaterl ㈹ighed dried a〔d ashed.

    Tabしelshovs detaハes o†sampしecoししectうon.

    (9)机しk

    Ravm圧k vaきCOしkct由in pr(ducing dist「うcts and

    C珊rCiaしmiしk vas purchasedinconsuming di5tricts. M=ki〔a StainLessきteモしpan or a porceLain dish vas

    飢即0rated to dryness foしし仇唯d bycarbonizatio〔and

    ash雨.

    (10)Vegetabしes

    Spinach andJapanese r虚ish ve「e sモしected as the

    representatives†0「しeaf v関etabLesand for〔0【-Sta「Ch

    r∞tS,reSPeCtiveしy.A†te「「引旧Vi咽き0ルthe dibしe

    Part Of ve9etabしeiamPしe va5d「ied and carbo〔竜三edi【a

    Sta凧ess st館しpanor a叩rCeしai〔dish.

    (11)Tea

    Five hundrd grams of ma【u†actu「ed groe〔tea VaS

    coししectedI¢arbonized and ashedin a stainしess stモモし

    Pa〔Or a叩rCeし紬=柄h.

    Tabしel【ktaiしs of sa仰しe coしし∝tio【

    Sampしe Freque〔Cy Of sampしi〔g Qua〔tltyof sampしe

    =【nv汗onmentaしmateriaしs=

    (1=如n and dry†aしし0】t

    l.For do¶eSt†c pro9ram

    2.Fo「UHO p「閑「am

    (2)A汗bor【e dust

    (5)Servうce〉∂ter a〔d什es血ater

    l.Service vater(so〕rCe Vater)

    2.Ser〉うce vate「(tap vate「)

    5.Freshvater (i)Soうし

    1.0一-5cm

    2.5・-20cm

    (5)Sea)ater

    (占)Se∂Sediments

    =Dうetary帽te「1aしs=

    (7)Totaしdうet

    (8)Rice

    l.Producing distrlcts 2.Co〔Sumin9dlstric亡S

    (9)附しk

    l.Prod〕C両dist「うcts fo「

    U目口p「Og「am

    2.P「oduc両dうst「icts fo「

    domestic p「og「am

    mo〔thしy

    m〔thしy

    quarte「しy

    Semlyea「しy

    Semiyea「しy

    yearしy(fうshi〔g SeaSOn)

    yea「しy

    yearしy

    yea「しy

    yea「しy

    Semiyearしy

    yearしy(harvesthg sea紬〔)

    y朗「しy(harvest†〔g SeaSO〔)

    quarterしy(Febr〕ary,May,A〕g〕St a〔d

    No〉ember)

    〉5000mさ/和〔th

    lOOβ

    100ゼ

    100ゼ

    kgわ-g

    ムT-1ムー-ヰ

    da恒amo〕【t†0「5pe「sons

    5kg(poしうshed「ice)

    5kg(poしished「ice)

    5l

    Semiye∂「しy(Febr〕ary a〔d August) 5月

    (2)

  • Sampしe F「eque〔CyOf sa仰=ng 8ua〔tity of sampしe

    5.飴nsumi【9distrうcts

    i.Povdered miしk

    (10)Ve9etabしes

    l.Pr雨ucう閏d毒str†cts

    2.伽nsumhg districts (†1)Tea

    (12)FishJSheししfish∂nd5eaVeeds

    l.Sea†寺sh

    2.Fres血ater fish

    5.Sheしし†ish

    ‘.Se錮eeds

    Semiyea「しy(February and August) 5ゼ

    Sem弓yea「Ly(Aprうしand駄tober)

    yea「しy(ha「ve$ting seaso〔)

    yea「しy(ha「vesti閏5eaきOn)

    yearしy(the†けst har㈹Sti悶SモaSO〔)

    yea「しy(fishhg season)

    y朗rLy(fうshing season)

    yearしy(flsh雨season)

    yearしy(佃州ng season)

    2・-さk9

    q一 9-q「-

    k k O

    O

    -▲T ムー【ノ

    (mnufacturd tea)

    2.P「epa「atうmof§細Pし亡き†0r anaしyきうき

    (1)Rain,きerVice vat訂and freshat即

    Strontiumand cesiumvereetuted vith hydrochしor- ic acid fr珊the(ほtionモXCね相手¢OLu肌 The re!idue

    Of「aうn sa叩L¢ 併thモfiしter paper va5aきhodin an

    モLoctri¢muf†Lモ†ur値Ce and thモaSh崎S di!きOLvdi【

    hydr∝hLoric acid.Thモi【抑Lubしe part vaきfiとterd and

    VaSh8d. Thef‡しt「atea〔d the伯Shi叩S㈹代∝湘binod

    to the p「lVims eしuateand usd for radi∝h珊icaしana-

    しysis.

    (2)SoiL and Sea s由1肘nt

    Dried soiし〉aS Cr】Shed toき旧しし即OneS than O.25

    min size by a crusher.The sieved sampLe va§aきhed in aneL餌tric爪Uffしe†ur伯(e代9uしa【由a【ヰ50℃.Thモ

    SamPしevas then heated vith hydrochしoric acid,StrOnt一

    山m and cモSium carrier soしutions and the mう×t】re VaS

    heated.TheinsoしubLe constituent va$†=tered off and

    咽き厄d vith vat餅.

    The dried sampしe vas crushed to smaししer one§than

    O.25∩耶by ac「】Sh両舶Chhe.The†urther preparatio〔

    0†the sampLe vas the same as that described†n the SeCtion2-(2).

    (5)Rice

    The8Shed sampしe vas puしverized vith a porceしain

    肘rtar a〔d passed thro】9h a O.55間Sieve.The sieved

    SamPしe to vHch both strontiu爪 a〔d ce;うum carrうer…

    Ⅵ汀eadded,VaSdiges亡母d vはh畑山c acうd by h朗ting.

    After the sampLe vas heated agai〔V毒th nltric acid to

    dry〔eSS・St「0〔亡iuma〔d cesiumvereext「actedvith hydr-

    ∝hし0「ic acid and vater.Theう【SOしubしe constうtue〔t VaS

    引しte「ed and vashed. The川trat8and vashingsvere COmbined for sub弼uent radi∝hemうcaしanaしysis.

    (i)Ai「ねrn8dust,diet,雨しk,〉即tabし¢S,fisha雨

    Sheししfish,§鰯Veeds,tOa and oth餅§

    The$e a$hed saJnPしesvere treated両th theiame

    P「∝〉●du「e a5that de餌rikdin the section2一(i).

    5.SIParatう馴Of雨「併tiwr90a鵬¢eきi脚一137

    (1)Strontiu巾-90

    Sa即Ll§OLuti帥S,PrOPar由asin the for印○雨 §l¢ti00S2・(1)th「ough2-(帖 ㈹re㈹utraLizod〉はh

    SdiⅧhydroxide.Aft釘きdiⅧCarbonatovas如dd, the pr餌佃tateof$trOnt‡脚 and(aしciumcarbo伯te5

    VaS雪印aratd.Th¢Su昨rnata〔t SOし肌うm vas retai【d

    for¢eSiu爪-157deモモrmi伯tion. The carbo〔ateS㈹代

    disきOLvdin hydr∝〉hLoric acid and stront血=〔d ca-

    しぐi皿㈹「O P「∝輌tatod aきOXaしateき.ThモPr∝ipitate

    VaS di!SOしv由i〔〔=ric acid and stronti膿VaS SePa-

    rated†「訓Caし¢iⅧ by5∝CeSSi㈹fum両nitric紙id SePa「at沌〔.I「OnきCaVen9eVaS madeaHer addition of

    ferriciro【Carr抽「化ししw¢d by bariumchr珊ate5印-

    aratio【after additb【Of bariumcarrier to rem㈹ 「adium,its dさu9ht餅Sa雨しモad.Stro【ti〕mVaS reCOV-

    e「ed as ca「bonate,a雨the pr紆廟tatevas dr血=血

    ㈹ighed to dete川Ii㈹St「Ont=」m re¢0Very.ThモStrOnt-

    う】mCa「bonate vas dうきSOしvedin hydr∝hしⅣic acid a【d

    i「on c8r「ie「vas added.Thモ50し〕tio〔VaS aしし帥ed to

    Stand†0r t冊㈹Oks for strontium-90and yttrium-90

    toattaineq山しibrium.Yttrium-90vas¢OPreCipi【a【ed

    Vith ferric hydroxldeand the precipitate vas†汁te-

    red offl伯Shed a【d cou〔ted.

    (2)鎚Sium-157

    The supe「natant separated fron the strontium

    fraction vasacidified vith hydrochしoric acid.uhiしe

    St汗「ing,CeSiⅧVaS adき∬kd o〔the am〔ium附しyb-

    (3)

  • treat由vith hydr∝hL∬ic acid for extractio〔.A㈹-

    ighed aしiquot of ashed s抑PしモSO†totaしdiet,Veget-

    abtモS,m圧k,fiさh,S如しし†ish or sea}ee由vas digest-

    ed vith hydrofL腫ricacid抑d nitric acid.

    TheモXtraCt VaS舶de up toa〔aPP「叩riate voしume

    Vithdiしute hydr∝hし0「弓c ac乱 丁he s洲Pしモ50しuti訓

    Vaきanaしyzd for caしciⅧby t圧ration 山th standard

    POta§Siu爪Per伯叩a闇te SOしutim after s印a「atin9

    Caしc血a50×aしate.At訓ic absorption印eCtrOSCOPy 伯S印Pし血h血【aPPr叩riat¢.StabLe stro〔ti膿a鵬

    叩taSSiⅧ ㈹re determi値d by atmic absorptio〔and 仇袖ほ朝雨料on印OCtr伽糟t「yIrl専門Ctiveしy.

    5.加nt佃 A†ter theradiochedlicaL separation the nounted

    PrOCipitatl§ ㈹「モC肌nt由 f訂 aCtivity u§i〔gし馴

    ba¢k9rOU雨betac仙〔t訂§【Ⅳ帽tとy for dO to90爪‡n.

    鵬t泊即しe¢OUnti叩rate§㈹「亡くⅣ「∝ted fo「c肌【te「

    e††iciモmy,「餌OV訂y,舗しトab§訂Ption a〔d de(ay t0

    0btain the∞nt郡t Of ∫trOn【iu椚一叩 き血 仁子9iu肝157

    Per$a押しea=quot.Fron the resuしts,COnCentrations O†t如き¢nuCしidlS竜n thモ Origi闇し sampし朗=絶代

    CaLeuしat由.

    dophosphate錮ded.

    A†ter f圧tired of†a雨 vaきhd vi抽hydr∝〉hしotric

    acid the prec廟tate昭S dis幻し∨モdin2.5N sdium hydr-

    OX毒de含OLリーi肌 The9¢tUtねn va‡adjuきtd topH8.2

    Vith hydrochし0「ic acid and aしL㈹d toc00し. Res山ほnt

    附しybdenumhydroxi由血ich separated outin the和Lut卜 on,滑∫filtered off and伯§hせd再tわva一合「. 甜TAvas

    added tothe†毒しtrate a雨vashin9さ.Cesう皿and rubidiⅧ

    ㈹「¢adsorbedon a闇ti馴eXeb呵モCOしUm【and cesiu爪 Va§SIParatd什訓rubjdiⅧby eしut両一日h hydr∝hし訂一

    竜C aCid.

    Thモモ山atモリaきeVa叩l・atld todryno$きa雨冊Sdうきき-

    0しved.Tk§OLuti00VaS fiしtモrld.蝕し訂OPしat仙¢aCid

    脇きaddd toprecipitate亡e§i膿. Tk precipitatモVa5 f圧te「ed onto a ta「モd paper u§i噂さdモ附untabしe fiしte「

    and va‡hed〉ithvat訂a雨t鵬nモthamし.A†t¢r drying,

    the¢h印icaしy弓モしd of(eさi珊伯き由t¢rmjnモd by vei9hhg

    the precipitate.Ce$iⅧ一157radう00Ctivity vas nea§Ured

    †0r this pr∝ipitate.

    i. 馳terhinatio【Of stabしe §tr併tう㈹,Caしci劇 a雨

    POta§Si脚

    A辟i9hd amunt of∫OiL∬タeaきdi瀬nt Vaきheat- モdin aモし∝tric nuf†しe†urnace ati50℃ a鵬t鵬n

    (4)

  • 6. Results

    (1) Strontium-90 and Ce$ium-137in TotalDiet (from Nov.1988 to Jan.1989)

    -COntinued from NO.87 0f this publication-

    Table(1);Strontium-gO and Cesium-137in Tot&1Diet

    Ash Ca X 00sr 13Tcs Location

    (g/p・d)(mg/p・d)(mg/p・d) (Bq/p・d) (Bq/gCa) (Bq/p・d) (Bq/gX)

    November,1988 lshinom&ki,NIYAGI Hiratsuka,ⅩANAGAWA

    December,1988

    Morioka,IWATE Fukushima,FUIくUSHIMA Tochigi-ken,TOCHIGI

    Xyoto,ⅩYOTO Neyagawa,OSAXA

    Mat$ue,SHIMANE

    January,1989

    Tsu,MIE Yamaguchi,YAMAGUCHI Takamatsu,ⅩAGAWA Ooita,00ITA Naha,0ⅩINAWA

    15.2 428 1910 17.3 699 2170

    0.067±0.010

    0.074±0.011 0.16 ±0.023

    0.11 ±0.016

    0.087±0.008

    0.11 ±0.010

    0.045±0.004 0.049±0.005

    00000 0

    1 5 5 5.4 9

    3 7 0 3 1 4

    2 1 2 2 2 2

    6 5 5一4一4 8

    6 5 7 7 4 4

    56 4 65 6

    0.10 ±0.013 0.058±0.010 0.067±0.010 0.067±0.010 0.059±0.010

    0.11 ±0.014

    0.18 ±0.023 0.088±0.015 0.14 ±0.021 0.099±0.014 0.11 ±0.018

    0.18 ±0.021

    0.16 ±0.012

    0.070±0.008

    0.088±0.008

    0.041±0.006

    0.079±0.008

    0.08g±0.009

    0.069±0.005 0.040±0.005 0.043±0.004

    0.018±0.003 0.037±0.004

    0.036±0.004

    9 77 7 8

    7 3 5 9 1

    4 5 4.4 7

    0 00 0 0

    .4-47 1 5

    109 1 3

    2 2 1 2 2

    0.12 ±0.012

    0.056±0.009

    0.075±0.010

    0.073±0.010

    0.060±0.010

    0.25 ±0.025 0.10 ±0.017 0.16 ±0.022 0.15 ±0.021 0.084±0.014

    0.12 ±0.009

    0.11 ±0.009

    0,10 ±0.008

    0.062±0.009

    0.053±0.007

    0.056±0.004 0.053±0.004 0.052±0.004 0.030±0.004 0.023±0.003

    (5)

  • (6)

    (2)-1 Strontiun-90 and Cesium-137in Rice(PrOd11Cing districts) (Nov.1988)

    -COntinued from NO.87 0f this publication-

    Table(2)-1:Strontium-90 and Ce$ium-137in Ric

    Component 90sr 13Tcs Location

    Ash(%) Ca(g/Ⅹg)Ⅹ(g/Ⅹg) Bq/Ⅹgwet Bq/gCa Bq/Ⅹgvet Bq/gK

    November,1988

    Takisawa-mura,IWATE O.596 0.0442 0.983 0.0000±0.0084 0.00 ±0.19 0.42 ±0.019 0.43 ±0.019

  • (2)-2 Strontium-90 and Cesium-137in Rice(COnSuming diBtricts) (from Nov.1988 to Jan.1989)

    -COntinued from NO.87 0f this publication-

    Table(2)-2:Strontium-90 and Ce$ium-137in Rice

    Conponent 00sr 137cs

    Location Ash(%) Ca(g/l(g)K(g/Ⅹg) Bq/Ⅹgvet Bq/gCa Bq/Kgwet Bq/gX

    November,1988 Ⅹyoto,ⅩYOTO

    January.1989 Hir・OSaki,AOMORI

    0.662 0.0527 1.12 0.0000±0.0084 0.00 ±0.16 0.0082±0.0078 0.0073±0.0070

    0.649 0.0511 1.20 0.0000±0.0077 0.00 ±0.15 0.048 ±0.0091 0.040 士0.0075

    (7)

  • (8)

    (3)-1 Strontium-90 and Cesium-137in Milk(producing districts for domestic program) (Feb.1989)

    rcontinued from NO・87 0f this publication-

    Table(3)一1:Strontium-90 and Ce8ium-137in Mllk

    Component 00sr 1;)Tcs Location

    Bq/ゼ Bq/gX Ash(g/ゼ)Caくg/ゼ)Ⅹ(g/ゼ) Bq/ゼ Bq/gCa

    February,1989 Aomori,AOMORI Mito,IBARAGI Nishinasuno-maChi,TOCHIGI

    Tonami,TOYAMA Oshimizu-maChi,lSHlXAVA

    Tak&ne-maChi,YAMANASHI Nihara-maChi,HYOGO Matsuy8ma,EH王ME Takasa-maChi,ⅩAGAl-A JXujuu-naChi,00ITA

    Takah&ra-maChi,MIYAZAXI

    1.50 0.059±0.008 0.053±0.007

    1.72 0.028±0.007 0.024±0.007 0.083±0.008 0.055±0.005 0.034±0.007 0.020±0.004

    0.053土0.008 0.030±0.004 0.032±0.007 0.020±0.004 0.26 ±0.013 0.15 ±0.008

    0.024±0.008 0.014±0.004 0.0」17±0.007 0.030±0.004 0.028±0.005 0.018土0.003 0.011±0.007 0.006±0.004 0.12 ±0.010 0.069±0.006

    7.04 1.13 7.60 1.17

    7.62 1.18 7.43 1.19 7.22 1.19

    7.52 1.1g 6.97 1.12 7.57 1.20 7.63 1.18 7.42 1.15

    7.16 1.13

    1.79 0.053±0.009 1.56 0.040±0.006 1.69 0.040±0.006

    1.70 0.051±0.009 1.59 0.033±0.007 1.60 0.007±0.006 1.67 0.034±0.006

    1.69 0.051±0.008

    0.046±

    0.034±

    0.034±

    0.043±

    0.030±

    0.006±

    0.030±

    0.045±

    0.008 0.006 0.006

    0.008 0.007 0.008 0.006 0.008

    1.58 0.037±0.007 0.033±0.006 0.15 土0.010 0.093±0.007

  • (3)-2 Strontium-90 and Cesium-137in Milk(producing di$tricts for WHO program) (from Dec.198さ to Feb.1989)

    -COntinued from NO.87 0f this publication-

    Table(3)-2;Strontium-90 and Cesium-137in Milk

    Component 00sr 1:けcs Location

    Ash(g/A)Ca(g/A)Ⅹ(g/A) Bq/A Bq/gCa Bq/ゼ Bq/gX

    Deeemもer,1988 HilくaVa-maChi,SHIMANE 8.13 1.33 1.61 0.037±0.008 0.028±0.007 0.021±0.007 0.013±0.004

    January,1989

    Nose-maChi,OSAXA 7.53 Takamiy&-maChi,HIROSHIMA 6.21

    February,19さ9 Sapporo,HOXXÅlDO 7.27 Hachijo-rSland,TOXYO 7.20 Nishikawa-m&Chi,NIIGATA 7.51

    Ⅹatsuyama,FUXUI 7.45 Ⅹochi,ⅩOCHI 7.47

    Fukuna-maChi,FUXUOXA 8.34 Ⅹ&jiki-naChi.XAGOSHIMA 7.60

    1.18 1.57 0.011±0.007 0.009±0.006 0.01g±0.006 0.021±0.005

    0.012±0.004 0.015±0.004

    0.093±0.006 0.13 ±0.008 0.016±0.004 0.027±0.005 0.022±0.003

    0.050±0.005 0.045±0.005

    0.951 1.37 0.021±0.006 0.022±0.007

    1.24 1.65 0.047±0.008 0.990 1.49 0.14 ±0.013 1.12 1.71 0.028±0.006 1.18 1.60 0.048±0.008 1.17 1.59 0.067±0.009

    1.27 1.73 0.033±0.007 1.18 1.68 0.021±0.006

    0.039±0.006

    0.14 ±0.014

    0.025±0.006

    0.042±0.007

    0.057±0.008

    0.027±0.006

    0.019±0.005

    0.15 ±0.010 0.19 ±0.011 0.027±0.007 0.043±0.008 0.035±0.006

    0.086±0.00g O.075±0.009

    (9)

  • (10)

    (3)-3 Stronti11m-90 and Cesilユm-137in Milk(COnSuming districts) (from Aug.1988 to Har.1989)

    -COntinued from NO.87 0f this publication-

    Table(3)-3:StrontiuJn-90 and Ce8ium-137in Nilk

    1;3Tcs Component 00sr

    Location Bq/ゼ Bq/gX Ash(g/A)Ca(g/A)Ⅹ(g/A) Bq/A Bq/gCa

    August,1988 Yokohama,KANAGAWA

    October,1988 Ⅹyoto,ⅩYOTO

    Deeember,1988

    Matsue,SHIMANE

    January,1989 0saka,OSAXA Hiroshima,HIROSHIMA

    February,1989 Sapporo,HOXXAIDO Yamagata.YAMAGATA Fukushima,FUXUSHIMA Shinjuku,TOKYO Yokohama,ⅩANAGAWA

    Niigata,NIIGATA Fukui,FUXUI Nagano,NAGANO Shizuoka,SHIZUOXA Nagoya,AICHI

    Yonago,TOTTORI Okayama,OKAYÅMA Matsuyama,EHIME Xochi,ⅩOCHI Chikushino,FUXUOXA

    Nagasaki,NAGASAXI Xagoshima,ⅩAGOSHIMA Yonagusuku-mura,0ⅩINAWA

    March.1989 Yamaguchi,YAMAGUCHI

    0.017±0.004 0.028±0.007 0.018±0.005 1.14 1.67 0.021±0.005

    1.12 1.54 0.037±0.008

    1.13 1.54 0.042±0.009

    1.12 1.58 0.018±0.007 1.03 1.47 0.018±0.007

    1.14 1.63 0.054±0.008 1.06 1.53 0.022±0.006 1.15 1.68 0.013±0.007

    1.13 1.61 0.032±0.007

    1.12 1.62 0.033±0.006

    1.20 1.71 0.057±0.008 0.969 1.48 0.052±0.008 1.11 1.52 0.029±0.007

    1.11 1.61 0.027±0.007 1.13 1.56 0.033±0.007

    1.14 1.58 0.047±0.008 1.07 1.52 0.028±0.005

    1.13 1.51 0.033±0.007 1.08 1.50 0.018±0.006 1.13 1.66 0.038±0.007

    1.03 1.63 0.028±0.006 1.16 1.63 0.035±0.007 1.11 1.67 0.023±0.006

    7.30

    0.025±0.005 0.039±0.007 0.033±0.007 7.33

    0.048±0.005 0.074±0.008 0.037±0.008 7.25

    0.028±0.004 0.019±0.004

    0.045±0.007

    0.028±0.006

    0.016±0.007

    0.018±0.007 7.37 6.さ6

    0.090±0.006 0.028±0.004 0.024±0.003 0.029±0.004 0.016±0.004

    0.038±0.005 0.048±0.005

    0.018±0.004 0.030±0.004 0.030±0.004

    0.037±0.005 0.025±0.005

    0.045±0.004 0.024±0.003 0.012±0.004

    0.020±0.004 0.063±0.006 0.00 ±0.003

    0.15 ±0.010 0.043±0.006 0.040±0.006

    0.047±0.007 0.027±0.007

    0.064±0.008 0.072±0.008 0.028±0.006 0.048±0.007 0.048±0.007

    0.058±0.008

    0.038±0.007 0.067±0.007 0.036±0.005 0.020±0.006

    0.032±0.006 0.10 ±0.009 0.00 ±0.006

    0.048±0.008 0.021±0.006 0.011±0.006 0.029±0.007 0.030±0.006

    0.048±0.007 0.054士0.008 0.027±0.006 0.025±0.007 0.029±0.007

    0.042±0.008 0.027±0.006 0.030±0.007

    0.017±0.006 0.034±0.006

    0.028±0.006 0.031±0.007 0.021±0.006

    7.36 7.02 7.43

    7.28 7.33

    7.76 6.69 7.13 7.19 7.17

    7.48 6.99 7.34 7.09 7.44

    6.86 7.50 7.29

    0.023±0.005 0.028±0.006 0.019±0.006 5.55 0.815 1.23 0.015±0.004

  • (4)-1 Strontiun-90 and Cesium-137ih Vegetables(producing districts) (from Oct.1988 to Feb.1989)

    -COntinued from NO.87 0f this publication-

    Table(4)-1;Strontium-90 and CesiuJt)-137in Vegetables

    CoJnpOnent 00sr・ 13Tcs

    Loeation Ash(%) Ca(g/Ⅹg)Ⅹ(g/Ⅹg) Bq/Ⅹgwet Bq/gCa Bq/Ⅹgwet Bq/gX

    (Japanese radish)

    October,19さ8 Tamayama-mura,IWATE

    November,1g88 Meiva-maChi,MIE

    January.198g Y11ya-maChi,YAMAGUCHI Xubokava-maChi,ⅩOCHI

    (Cabbage)

    January,1989 Ⅹumatori-maChi,OSAXA

    (Spinaeh)

    November,1988 Ⅹusu-Chou,MIE

    January,1989 Yuya-maChi,YAMAGUCHI Eubokava-maehi,ⅩOCHI

    Fet)rⅦary,1989 Sudama-maChi,YAMANASHl

    (Chinese cabbage)

    October,1988 Tamayama-mura,IWATE

    0.015±0.007 0.0068±0.0033

    0.020±0.006 0.011±0.0030

    0.001±0.004 0.0006±0.0020 0.043±0.008 0.022 ±0.0041

    0.19 ±0.016 0.67 ±0.055

    0.19 ±0.018 1.1 ±0.10

    0.18 ±0.016 0.56 ±0.048 0.20 ±0.016 0.85 ±0.069

    0.570 0.283 2.20

    0.437 0.180 1.85

    0.486 0.325 1.87 0.472 0.233 1.98

    0.005±0.007 0.0022±0.0033 0.047±0.011 0.13 ±0.030 0.539 0.358 2.16

    0.010±0.005 0.0013±0.0006

    0.014±0.006 0.0029±0.0011 0.062±0.010 0.012 ±0.0019

    0.025±0.007 0.0032±0.0008

    0.072±0.012 0.053±0.009

    0.26 ±0.019 0.57 ±0.042 0.97 ±0.032 2.2 ±0.07

    0.18 ±0.017 0.22 ±0.022

    2.00 1.35 7.90

    1.21 0.456 4.98 1.32 0.442 5.33

    2.04 0.803 7.93

    0.042±0.009 0.017 ±0.0036 0.21 ±0.017 0.34 ±0.026 0.632 0.633 2.39

    (11)

  • (12)

    (4)-2 Strontium-90 and Cesium-137in Vegetable8(COnSuming di$tricts) (from Oet.1988 to Feb.1989)

    rcontinued from NO・87 0f this publication

    Table(4)-2:StrontiuJn-90 &nd Ce8ium-137in Vegetableき

    Component 00sr l計Tc$ Loeation

    Ash(%) Ca(g/Ⅹg)Ⅹ(g/Ⅹg) Bq/Ⅹgvet Bq/gCa Bq/Ⅹgwet Bq/gX

    (Japanese radish)

    Oetober,1988 Ⅹyoto,ⅩYOTO

    January,1989 Nagasqki,NAGASAXI

    February,1989 Yokohama,ⅩANAGAVA

    (Spinaeh)

    January,1989 Nagasaki,NAGASAKI

    February,1989 Yokohama,ⅩANAGAWA

    0.52 ±0.024 3.2 ±0.15

    0.028±0.011 0.14 ±0.058

    0.10 ±0.014 0.37 ±0.051

    0.051±0.009 0.028 ±0.0047 0.446 0.161 1.85

    0.479 0.195 2.00 0.000±0.004 0.0001±0.0021

    0.007±0.004 0.0034±0.0022 0.523 0.278 2.01

    0.055±0.012 0.12 ±0.027 0.025±0.006 0.0056±0.0014 1.37 0.458 4.36

    0.047±0.012 0.13 ±0.032 0.008±0.005 0.0014±0.0009 1.29 0.367 5.51

  • (5) Strontium-90 and Cesium-137in Sea Fish (from Nov.1988 to Feb.1989)

    -COntinued from NO.87 0f this publication-

    Table(5):Strontium-90 &nd Cesium-137in Sea Fi8h

    Component 00sr 13Tcs Location

    Ash(%) Ca(g/Ⅹg)Ⅹ(g/Ⅹg) Bq/Ⅹgvet Bq/gCa Bq/Ⅹgwet Bq/gX

    (Trachurus japonicus) December,1988

    0dawara,ⅩANAGAVA

    (Limanda herzensteini) February,1989

    00take,HIROSHIMA

    (Scomber japonicus) November,1988

    Kyoto,XYOTO

    January,1989 Sakaiminato,TOTTORI

    1.52 0.323 4.82 0.000±0.009 0.000 ±0.02さ 0.34 ±0.017 0.070 ±0.0035

    2.91 6.37 3.27 0.019±0.009 0.0030±0.0014 0.12 ±0.010 0.036 ±0.0031

    1.25 0.889 2.76 0.000±0.008 0.0000±0.0094 0.18 ±0.013 0.066 ±0.0046

    1.45 0.950 3.40 0.003±0.008 0.0031±0.0083 0.20 ±0.013 0.060 ±0.0037

    (Sebastesinermi$) February.1989

    Yamaguch卜bay,YAMAGUCHI 4.97 14.4 3・17 0.043±0・010 0・0030±0.0007 0.17 ±0.015 0.055 ±0.0046

    (13)

  • Sea Fish

    Japanese name English name Scientific name

    Trachurus japonicus Limanda herzensteini

    Seomber japonicuS Sebastes inermis

    Horse maekerel Flatfish Common maekerel Black Rockfish

    Aji Xarei Saba Mebaru

  • (6) Strontium-90 and Cesium-137in Freshwater Fish (Dee.1988)

    -COntinued from NO.87 of this publication-

    Table(6):Strontium-90 and Cesium-137in Freshwater Fi$h

    Component g=Osr 137cs Location

    Ash(%) Ca(g/Ⅹg)Ⅹくg/Ⅹg) Bq/Ⅹgwet Bq/gCa Bq/Ⅹgvet Bq/gE

    (Carassius auratus) December,1988

    Uji,KYOTO 4.28 10.8 2.90 0.96 ±0.032 0.089 ±0.0029 0.066±0.009 0.023 ±0.0031

    Freshwater Fish

    Japanese name English name Scientific name

    F11na A crucian carp Carassius auratus

    (15)

  • (16)

    (7) Strontium-90 and Cesium-137in She11fish (Feb,1989)

    -COntinued from NO.87 0f this publication-

    Table(7):Strontium-90 and Cesium-137in Shellfish

    Component 0Osr l計Tcs

    Location Ash(%) Ca(g/Kg)Ⅹ(g/Ⅹg) Bq/Ⅹgwet Bq/gCa Bq/Kgwet Bq/gR

    (Ostrea gigas) February,1989

    Hatukaichi-maChi HIROSHIMA l.66 0.665 2.39 0.017±0.019 0.025 ±0.029 0.027±0.011 0.011±0.00-17

    Shellfish

    Jap&neSe name English name ScierLtific name

    Ⅹaki Oyster Ostrea gigas

  • (8) Strontium-90 and Cesiun-137in Seaweeds (Feb.1989)

    -COntinued from NO.87 0f this publication-

    Table(8):Strontium-90 and Cesi11m-137in Seaveed5

    CoTnpOnent 90sr 137cs

    Location Ash(%) Ca(g/Ⅹg)Ⅹ(g/Kg) Bq/Ⅹgwet Bq/gCa Bq/Kgwet Bq/gK

    (Undaria pinnatifida) February,1989

    Minamichita-maChi,AICHI Hiroshima,HIROSHIMA ShimabaLra,NAGASAXI

    0.12 ±0.10 0.017 ±0.0014 0.026±0.006 0.0037土0.0009 0.025±0.009 0.0023±0.0008

    2.56 0.901 7.12 0.030±0.011 0.034 ±0.013

    2.27 0.383 7.00 0.031±0.011 0.030 ±0.029 3.23 0.651 10.9 0.014±0.011 0.021 ±0.017

    Seaweed月

    Japanese name Engli$h name Scientific name

    WakaTne Wakane seaweed UndaLria pinnatifida

    (17)

  • (18)

    * * * Tota[Diet * * *

    < Strロntium-90 >

    (Bq/p.d】

    < Cesium-137 >

    (Bq/p.d】

    1E+1

    1E+0

    1E-1

    1E-2

    0

    1E+1

    ほ+0

    1E-1

    1E-2

    0

    0・‥・……………Sapporo

    o………………・Mito

    ---…-一…一 日ratsuka

    トーーー=一-- Fukui

    -------・00kuch竜

    ∫紆.丁くゝ・、 ・・0・

    ヽ ′ 短二声浅手箆瑞チ tr

    .0.

    .◎

    魂退避 幽

    【Y亡8rl (Y88r】 1985 1986 1987 1988 1989 1985 1986 1987 1988 1989

    Fig.1

  • * * * Rice(producing districts) * * *

    < Cesium-137 >

    【Bq/Kg=t】

    < Strontium-90 >

    用q/Kg-et】

    二≡二:二

    0…… lshikari-maChi

    o………………・Mito

    か-…-=一= Hodaka-てn8Chi

    トーーーー…- Yama9UChi

    -------・ Chikushino

    ■・、

    き二:::二ここ二、・こ◎・・== モ

    、 ・ :で ∴

    【Ye8「) 1985 1986 1987 1988 1989 (Y88r) 1985 1986 1987 1988 1989

    Fig.2-1

    (19)

  • (20)

    * * * Rice【consurning districts) * * *

    く StrQntium-90 >

    t8q/K8==

    く Cesium-137 >

    (Bq/Kg=t)

    0=…・・・・……・・ S8PPロr8

    。…・‥ ‥‥Sいnj】ku

    ロトーh-----…- 058k8

    -一一一一…--一 日irロShlm8

    -一一---・ K8985h】冊

    “ \

    ■一‾ 軋・∴∴・二 ・∴:♂工・ 設

    0 ■O t

    1985 1986 1987 1988 1989 【Y08r】 1989 (Y…r) 1985 柑鯛 1987 1988

    Fig.2-2

  • * * * Mi[k【producing districts for domestic program) * * *

    < Sいon=um-90 > < Ces璽um-て37 >

    q

    B

    ■■一

    Bq 十

    つL -

    十 0

    E E E

    + ■・・t

    + O

    E rU 0=‥‥ ・・・・Aomori

    ◎………………・M=0

    か-一山----- Osh=再三u-maChi

    --……… Mih8r8-maChi

    ,------・ Yarnato-m8Cht

    瓜 Q. 瓜 0.

    1E β、、。

    トーーーニ’一一丁古,∴■′ 0’ 匪ぺこ去声至芸密告鵠;言盲 _良 ‾‘●■q ラ音

    ・・ J

    瓜._8 J′、

    し)-∴甘ユ、、・0

    J 、与 ーニ㍉優二二:

    1985 1986 1987 1988 1989 (Y亡8rI 1985 1986 1987 1988 1989 【Y亡邑「】

    Fi9.3-1

    (21)

  • (22)

    * * * M=k(producing districts for HHO program) * * *

    < Stron=um-90 > く Cesium-137 >

    (Bq/上】

    1E十-1

    【Bq/幻

    ほ十2

    1E+1

    1E+0

    1E-1

    0

    0………………・Sap叩rO

    O…… =‥HachijローIs【and

    ひ-…---一一 Kats〕yama

    トーーーー…-一 丁akamiya-maChi

    トーーーーー・ Kajjki-maCh-i

    1E+0

    1E-1

    1E-2

    0

    ●・,,・○・・○・・ ▲● ■▲

    定二主キ呈示定迂 ・・■◎・・個. ・○ ′ ヽ ●Qデーノ

    ■一」■-■ヽ′■-¶l

    ;三三…三三…三‡ ■■

    1985 1986 1987 1988 1989 (Y…「) 1985 1986 1987 1988 1989 【Ye8r)

    Fig.3-2

  • * * * Mi[k(consuming districts】 * * *

    < Cesium-137 > く Sい0ntium-90 >

    【Bq/上J (Bq/ヱ】

    1E+2

    1E+1

    1E+0

    1E-1

    0

    1E+1

    1E+0

    1E-1

    1E-2

    0

    0………………・Sap叩rO

    ◎・・・……………・Shinjuku

    か-…--=-- Fuku】

    --一一--一一-- Osaka

    トーーーーー・ Kagoshima

    朱1ご ≦霊二空慧二二てこ控ござ針霊

    恥璽韓璽靂 .8・.. ■‘・0 ′ ヽト、、こ__㌔ 、、 ■

    ㌣吾二㌻く:声ぎ空

    1985 1986 1987 1988 1989 (Ye8r) 1985 1986 1987 1988 1989 【Y88「)

    Fig.3-3

    (23)

  • (24)

    * * * Vegetables(consuming districts) * * * 〔」apanese radish】

    く Strontj um-90 >

    tBq/K9=tI

    < Cesi】m-137 >

    (8q/K8=tI

    0…‥・ …・…Senda墓

    ●‥・‥・・=・Shinjuku

    ------一… Ni igsta

    ト……… Okay8m8

    ----一-・ N89i5aki

    1985 柑86 1987 1988 1989 (Y…「】 1985 】986 1987 1988 1989 【Ye■‖

    Fi9.ト2

  • * * * Sea Fish * * *

    〔Scomber japonicus】

    < Strontium-90 >

    ほq/Kg-et)

    く Cesjum-137 >

    ほq/Kg=t)

    .≡二:二 + ー .11■‘」l

    ■-

    O l

    E 「亡 E

    0……………・=・KγOtO

    ●・…・・・…・・・・Os8k8

    か……---… Sak8iminatロ

    ト…-…- Matsuy8ma い一一-○ず宗=ニニ亡㌫転 鶉 恥珊瑚

    0・・..・・■. 丁 ___丁..T恒・。

    p一‾‾ tr 、-D・_ ‾‾‾■一 ●1コ

    1985 1986 1987 1988 1989 【Y‥r】 1985 1986 1987 1988 1989 (Ye8rI

    Fig.5

    (25)

  • (26)

    * * * FreshNater Fish * * *

    〔Carassius auratus)

    く Cesium-137 >

    (Bq/K9Het】

    く Strontium-90 >

    (Bq/Kg}et】

    0=‥‥ =‥Bar8tO-lake

    ●…… …Toy8nOg8t8

    -一-…-…-一 Mikata-l8ke

    トーーーー=一- 〕ji

    + ー

    + 0

    E E

    -一一一‾‾-,‾、---- ○

    -------__ ′F--→-ヱーー9

    ----___ 虻

    ㌔ ◎ ○ ●

    【Y巳8「】 【Y亡8r) 1985 1986 1987 1988 1989 1985 1986 1987 1988 1989

    Fig.6

  • * * * She11fish * * *

    〔Turbo cornutus〕

    < Cesium-137 >

    【Bq/Kg-et】

    < Stro[=um-90 >

    【Bq/Kgvetl

    ほ十11 0………………・Sakat a

    ●…… ‥‥Ryotsu

    ひ--…-…Togi -maChi

    1E+0

    1E-1

    1E-2

    0

    啓一ニノーーー1旨- 一浪一江----一軋虻

    0

    (Ye8r) 1985 1986 1987 1988 1989

    Fig.7

    (27)

  • (28)

    * * * SeaNeeds * * *

    〔〕[daria pi〔nat==ca〕

    く Cesium-137 >

    (Bq/K9-et)

    二≡二二二

    く Stronti]m-90 >

    (Bq/Kgvetl

    1E十1

    1E十0

    1E-】

    lE-2

    0

    0‥…・ …・S8ka七色

    ◎…・・・・…R†OtSU

    ひ-=------Togj-m8Ghi

    ■ト・h---…一-- Min8michita-m8Chi

    ∇---一--・ Shimab8r8

    一■ 嘩∴ tP o ・0 =空議ここ こ

    (Ye8r】 1g85 1986 1987 1988 】989 (Ye8「) 1985 1986 1987 1988 1989

    Fig.8

  • ** Samp‡ing Locations inJapa[ **

    23:Tottori 24:Ko♭e

    25:岨k8†8m8

    26:Dk8†8m8

    27:Matsue 28:Hirosh!m8

    29:Kochi 30:M8tSUy8m8 31:Yam8gUChi 32:00ita 33:F〕kuok8

    34:S8g8 35:N8g8S8ki 36:K8gDSいm8

    37:N8h8

    Sappor8

    Aomor j

    Mor…oka

    Ak豪ta

    Send8i

    Yam8gat8

    Fukushima

    N=g8ta

    Mi ta

    〕tsun8miy8

    Ch=用

    Shi〔juku

    N898nO

    Yokoh8m8

    Kouhu

    2

    3

    1

    5

    6

    7

    8

    9

    10

    t 1

    12

    13

    14

    15

    16.:To†am8

    け:Kan8三色W8

    18

    19

    20

    21

    22

    Shizuok8 Fukui Nagoy巳

    Kyoto Os8k8

    (29)

    Cover PageContentsResults(1) Total diet(2)-1 Rice (producing districts)(2)-2 Rice (consuming districts)(3)-1 Milk (producing districts for domestic program)(3)-2 Milk (producing districts for WHO program)(3)-3 Milk (consuming districts)(4)-1 Vegetables (producing districts)(4)-2 Vegetables (consuming districts)(5) Sea fish(6) Freshwater fish(7) Shellfish(8) Seaweeds

    Sampling Locations