Fhe rate of fall of contamination of ured, then, potatoes, and meat with Cs was much more sipmitieant tian taater contamua- gen wath YSr. in .@6u, in COMpParison with tat in Par, tre intake ef "Sr bs the rortuation of che Soviet Laren decrease! bx oO and an : wae an tgs chat of Cs py alirest 60>. The level of .ntake of (Sr ov the popuoD . + . raticmhin LIB amounted to wbout G. and thator bes te dt 1 of the permissible intake of these isotopes uecording te ihe ) 469 standard of radiation safety. tauth) 23182 CONSIDERATION OF STABLE IONINE IN THE ENVIRONMENT IN THE EVALUATION OF MARIMCUAL PERMISSIBLE CONCENTRATIONS FOR SI, Tadmor, Jacob (Soreq Nuclear Research Centre, Yarne, Israel, Tel-iviv Univ., Israel) Radiol, Health Data Rep.; 12: No, 12, GLi-1litDeec 1971), An increase in the content of #81 in the atmosphe:e duc to 1e- tease from nuclear fuel reprocessing plants is predicted, Lased on projected figures for the expansion of the nuclear industry to the vear 2000. Itis pointed out that stable iodine is also released from nuclear fuel reprocessing plants. Consideration of the relationship between the concentration of stabic and radivactive is0topes in an equilibrated environment revealed ‘hat the maximum permissible concentration (MPC) values for * might need revision. A test computation was performed on the IPC of Stain atmosphere and the corresponding tnaximum permissible burden in the human thyroid, taking into consideration the ratio between the mass concentration of the radioactive and total inwtopes. Dats on the half-time equilibrium for !%f yia different food ehain pathwavs to various human tissues were used in the computation. It was conciuded that, based on the MPC value of 6 - 10°'! Ci. m* for the nonoccupational population, the 9! burden of the human tayvroid in the vear 2009 could reach a level about 1l4-foid higher than the maximum permissible burden. (C.H.) 23183 BONDS OF METHYLENE BLUE TO ERYTHROCYTES OF URANIUM MINERS, Nosek, J. (Inst, of National Health in Uranium Industry. Pribram. Czech,), Cas, Lek, Cesk.; 110: No, 14, 313-16(2 Apr 1971). (In Czech), A study is presented on the progressive decoioring of methylene blue by the suspension of erythrocytes, carricd eut on uranium miners, The results of this and of two preceeding studics show a different content of pyridinanedindinuc leotides in the ervthrocytes of uranium miners, as compared with controls. Tbe reason is assumed to be the cantamination of erythrocevtes by uranium. (NSA of Czech) 23184 alise ti BODY BURDENS OF ts AND @k IN THE JAPANESE POPULATION. Katsunuma, Haruo: Yoshizawa, Yasuo (Tokyo Vniv.). Nippon Igiku Hoshasen Gakkai Zasshi; 31: No. 1, 1-6 (Apr 1971) About 2000 Japanese were sampled for this study. Body burdens of ‘VCs and “°K in the Japanese population were measure | with a whole-body counter, Sex and age of the subjects, ranging in age from 6 to 87 years, were evenly distributed, The survey took 2 yra to complete. The decreasing rate of body burdens of '"Cs during the 2 yrs was taken into account, and the necessary correction was made. Number of subjects showed in tables by age and sex, The potassium concentration was recorded as grams of potassium per kilogram of Jean body mass (LBM). The body burdens of '*Cs wore expressed as radioactivities per kilogram of bodv weight per gram of potassium, From the values obtained in this study, the genetically significant doses delivered by body burdens of "Cg and ‘°K to the Japanese population were caleulated as 20.61 = 0.50 mRem/yr and 0.49 ! 0.035 mRem’yr respectively (the values of August 1967 were used for the calculation of the doge), (Japan) 23755 ABSORPTION AND RETENTION OF COBALT IN MAAN BY WILOLE-BODY COUNTING. Smith, T.; Edmonds. C. J.; Barnaby, C.F {University Coll., London). Health Phys.: £2; No. 4, 359-67(Apr 1972). Retention of Co given intravenously or orally as “CoCl, to human subjects wags measured by whole-body counting for periods af up to 1018 dave, Intravenous "Co was retained for long pertods, as much 2s 9 to 16% of the dese being eliminated only with a bio- logical hali-life of about 2 yr. The absorption of orally administered “CcC}. depended cn eeveral factors, especially on the amount ef etabia eckalt given. Only 5% or lesa of a trace dose (containing lecs than 1 px Co) was absorbed but this increased to more than 20) when larger quantities of stabie cobalt (1.2 mg) were given. Tio aboorladfracticn cf an oral cose was apparently retained by the waole bodv in @ similar way to Co given intravenously. Re- 5ui3 © f Lerial counts over the liver using a collimated Nal deteetor, Indic ted that ‘Co wag concentrated in this orpan in excess of the average whole-bcdy concentration even in subjects mea- 2219 sure] after POO taye Pea levee : : ae ATP ae -A gradual fall in the extent of contamination cf most of the food a in:tteaisomiaas't LIFE SCIENCES products with “sr and 'Cs was noted in the perrod from L967 to Med, ut The results cadieated thet the ameunt of 1 Coopresentin the liver was, oon average. about cane total body content. ‘auth fifth of the Animals Rete rads fe aAstategs LL tna 1 shad, 23186 AR Cwir 28) MEINE RablorCoLOGY, Polis karpoy, Gobroced. Translationoot Morskast dadteek frist, hiey, Izdetel feo Nadkowe Dumka, PATO. ten feo NTI, Research tcehmiqges, trans of wie are upplicagle in varius branei s ol marine erslor ind eceanuper ipa, are deseriberd. Rex MLS ibe roperted fram viaebescen the diag Sand mame ct eschinge of radiogesi.. aod chemical sub= "une: aeteeen h.drohtonts ward the cnsdronment, the distribute: oc rehoenuclides in ereoanisim ef mitpime fae, and the radiosensituite af niitesys ha dish emorvos. Composite dataoon the radioece logy ot Peeis nd coean sare presented. Emphasis 1s pleced on thy transpurt of “Srom water and oreanions of the Black and Red Seas, and the content ub OSrontish inthe Vthantie and ladian (eeuns. (36s relorenees) (2.EEI 23187 (OPASR ZF A) GAMADY-RAY SPFPOTROMETRY EXPERIMENTS WITH LARGE FARM ANIMALS, Daburon, Francois; Reroy, Jacques; Griilan, Gerard: Tricaud, Yves: Sizza, Pierre (Commissariat a i’ Phergie Atomique, saciay ¢brance) Centre ditudes Nuciewresi Now l97i. L03p. (In Frenchy. Dep, S PIS (U5. Sales Gnivy. \ survey was unta. of the various types of wale -bous radiation monitors for large farm aimmuals reperted in tic torany facihities developed tor sheep, literature. Mon- awaine, and cattle wre de- serhed fron the poet of views of radiation do tewtion, containment of the animals, and paantatns used tor calivratiha, The preablems of raaoiwsotope distribution an the bods were our tudiv studied in oder totry ane show the changes that wourd adicet the cunting peometry, Sore examples piven inciide: POC ie metabolism in daaryv cattle, assessment an the fetuses and bods burdens follow wus the admunistratien of [31; rate of transit of au dieeste d inseluble compound (Basa, and the determination Gt the site of uptake of radionuclides (Chu and 84ers by the mterpretation af the scanning data. ‘qutn! 23188 (PUR 41) MOVEMENT OF CERTAIN TsOoTOPES IN ANIMALS AND OMAN. Annual Report, L970, (Commissariat a PP nergie Atomique, Fonteniy-tux-HKoses , France), Centre d'Etudes Nuclesires) Lo7L, 36p. dn French), Deo, NTIS (U.S. Sales Ontyt. EUR FF 6.65, Investigations on the metavollsm cf lanthanides and actinides following inhalation or iitramuscular injection were carried out in rats. Ditferences were ooticed between 28 Pu and 7? Pu distribution in tissues. The metabolism ot “Np was simular to that of “Spal Several vanthanides and actinides ol valence 4 ant {were compared both dor alveciar clearance vane removal fram hone. The resu:ts obtained with actinides of a higher valenee were gathered ta showthe Sinuiarities and ditierences of distribution as compared with actinides of valence 3 or 4. Further progress was nade in studies on alveolar clearance and the kinetics obtained in various experimental condiueons were anaIveed. (auth! 23189 (RLO-L730-55) S7nIN BENTHIC INVERTEBRATES OPP THE GREGON COAST, Carey, Andrew G, Jr. (Oregon State Univ, Corvallis, Dept, of Oceanography), (L970). 27p. Dep, NTIS, Radioecological studies of benthic invertebrate fauna off central and northern Oregon demonstrate that Zn entering the Northeast Pavifie Ocean via the Columbia River is concentrated by the sublittoral, bathval, and abyssal fauna, The °2Zn \PCi/¢ ash-Iree drv wt} anc specific activity (uCi © 2Zn/pg Zn) in the fauna decreases fairly reculariy with distance from the river and markedly with depth within the first 400 m. The major route of the isotope to the fauna appears to be through the tocd web. The radoecolagy of the benthic organisms difters from that of the pelagic fauna. (auth) 23199 (RIG-1750-61) SEASONAL AND AREAL DISTRIBUTIONS OF RADIONUCLIDES IN THE DIOTA OF THE COLUMBIA RIVER ESTUARY. Rentro, William C., Forster, Wiliam O.; Osterberp, Charlies (Oregon State Umiv,, Corvallis. Dept. of Oceanographs}. (19691. 425, Dep. NTIS, In the Columtnia River Estuary Zn was present during 1964 to 1968 in measurable amounts in all organisms. Because of the ease with which it could be measured and because of the biolor- ical importiunee af zinc, Zn was studied most intensively, Other radionuchdes measured at feast once in the biota were “Wo, -!Mr, oF ae May 31, 1972 Sica -. chawtis