24 RADIOACTIVE CONTAMINATION OF AREAS IN THE PACIFIC OCEAN FROM NUCLEAR TESTS Unlike localization in the liver of mammals, Zn® was found distributed fairly uniformly among the tissues. The Co found in clams accounted for the major portion of the activity. (The ability of clams to concentrate Co® selectively was verified by laboratory experiments.) Table 24—Radiostrontium, Radiocesium and Table 25—Sr™in Biological and Lagoon Bottom Samples from Rongelap Atoll, October 1955 Radiocerium-Praseodymium in Biological Samples, December 1954-January 1955 (AFL) IsLaND ORGANISM PERCENTAGE OF TOTAL ACTIVITY Sri Sr” June-July 1956* Rongelap Atoll: Gejen.___..-.- $1 coconut milk..._. <0,1 |<0.1 Kabelle..__--- 37 Caulerpa__...---.}_-----|-----30 coconut milk.....)......j---..38 Halimeda_........).----.].----39 coconut crab 0.86 46 muscle. 41 mullet muscle..._/ 0.0 0.0 Cit? Sept., Oct. 1955* al. IsLaND Pris July, Aug, 1956" 0.0 0.9 72, 0.0 67, 71. 0.0 28. 1,0 0.0 L& 76. 0.0 0.0 0.0 14) 2.5 26. 78, 110. 68. <0.4 <0.2 0.7 3.7 83 squash meat._.__. >0O1] 0.0 0.0 0.0 LS 0.0 0.6 4.8 6L. ToTAL Activity SAMPLE d/m/g* Sr, PERCENT or TotaL ACTIVITY Celt LabaredJ-_---.- 29 coconut milkx_.__. <0.5 [<0.5 42 tern bone.___---_. 0.0 43 tern bone._...--.. 0.0 Mellu....----- 49 dogtooth tuna 0.0 muscle, Rongelap...-.. 27 coconut meat-..__ 0.0 28 coconut milk.._.. 0.0 32 pandanus fruit...}>0.1 34 papaya Meat_.._- >O1] (AFL) 28. 26. 0.6 Rongelap.._| Coconut meat_..--...-----.+-.-110 Pandanus frult._..---..-....---180 Morinda fruit.....--------.----. 47 Labaredj._.! Arrowroot corm--_.-------.-----40: Kabelle_...- Coconut crab musele....-..----440 Coconut crab Hver.......------1, 200 Coconut crab salts of carapace-._j.-....-.---Labaredj...) Do...-- Eabelle_.... Giant clam mantle and muscle.Giant clam Kidney___-...------Bonito musele_.....---...-..--~-Bonito ltver.....__-.......------ 1,700 5, 200 150 1, 700 Grouper muscle__......---...-.Grouper liver._.....-....---.---Goatfish muscle...-...------...- 3t 5, 500 42 Bonito bone.-..-..-..--.-------- Labared}.../ Tern muscle.......--.-..------Kabelie.....) 1.0 *Dates of analysis. Coconut crab cuticle of carapace.|.._...------ Lagoon bottom, depth of water 6’, Top inch fraction containing 7th inch... Particles >0.074 mm diameter. 0 21 4.6 3.2 2.9 12, 60.0 29.0 0 0 6 0 390 <0.6 61 0 40, 000 25, 000 0 0 0 0.73 0.71 *Wot weight basis except lagoon bottom which is on a dry weight basis. Table 26—Radiostrontium in Plants Collected at Rongelap Atoll July 23-24, 1956 Counted Sepiember 4, 1966 (AFL) PLANT Breadfruit_._.._-.----...--...Morinda. -_..-----....---.--. Pandanus.......------.---+-Arrowroct........--.---------| Coconut..........---.--.----Do-.. _--| Do --| Do...---..--...---------- TISSUE ISLAND Polp._-..-.-----..-------- Rongelap_-.---..----._.-. Pulp and seed__.___...-__-|--.-. do... eee Seed _.--.-.------.-----..- -----00.....---------------Pulp and skin._....-._...}--... do__ee ee Milk_.___..------.------2- 4. do... eee Meat.__.-----.-----2...---]-__-- do -Milk_.......---..-.--.-.- Kabelle. i. 2. Meat_......---...---.---.-/----- do__. ue e TOTAL A Activity d/m/g wet 42.0 80.4 79.71 108 262 64.6 36.9 148 Bra d/m/g wet Calcium g/g wet “SUNSHINE Unrzs’’ Sri; Sr 0.8240. 03 0. 000628 60170 1,770.10 3.10.1 0.00136 69440 3, 680. 22 2.2+0.6 0. 00450 150444 0. 762-0. 06 2, 540. 6 0, 00333 204-439 1.4840.05 0 wee fee. . O anceceeeeee|eer ee ee en ee eee ~ 0 Fanee eee een eee peewee Oana ewe e ee eee ee eee nnnn |enee eee DOF ARO". oy: