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: