a
8
-
won
aa
RADIOACTIVE CONTAMINATION OF AREAS IN THE PACIFIC OCEAN FROM NUCLEAR TESTS
Table 2—Summary of Gross Beta Activity in Major Plant Foods (NRDL)*
Source
AVERAGE ACTIVITY (uc/g x 10* or wc/cc x 104) =>
Atoll
Island
Arrowroot
Breadfruit
Pandanus
Papaya
Coconut
Meat
Liklep.._-.-..-2-----Utirik....--.- 2.
Rongelap--..-.-
22 e eee
4.0
9.1
16
3.4
16
[-...-2 eee
5.7
6.0
B
3.6
9.0
27
2.5
2.3
9.8
3.0
Rongelap....---..-------.----2----
12
Rongelap..._.-.-Rongelap....-_-
18
72
Rongelap....--.---Rongelap-_..-----
Rongelap- _..--Bikar........--.--
-
13
16
.
-
-
19
5.9
Rongerlk.....----..----.-+2----0-6- Eniwetak -......--------------------
7.8
Mik
20
26
9.6
ll
123
13
12
16
25
30
5.0
o4
® Wet weight.
» As determined on basis U:0¢ standards and empirical scattering and absorption corrections.
*Collections made about February 1, 1955. Data reported as of March 1, 1955.
Table 3—Gross Beta Activity in Plant Samples * (NRDL)
PLANT
PLants > (c/m/kg x 10-*)
PaRt
Gejen
Portulaca....-......--..----- Whole plant......--.-.---.--wroot
Stem, leaves-OOF. ~~ nnen enn ron nnee Tubers ....Air root...
87.4
Entwetak
19.2
4.6
Eniaetok
3.05
0.32
0.69
Rongelap
Sifo
Utirik
1.2% [.-.-.22 eee
LT
0.25;
Jo. -l eee
0.
Likiep
L3
0.03
Pandanus..._._.-..---.---.-
Papays...-..2----.--e- enone
Ripe coconut.......--.---..-
Green coconut....-.------.--
hensiquectmes Siihhg 2
famedMealaes
Shell, busk..-.------------2.-MUE.. 22-2 eo eee eee ee fe eee eee
0.11 |... ..-22---|------------|--------- eee enn] oe eee ee eee
1.61
0. 76
0. 78
0.71
0.11
0.08
Bprouting coconut....-.-..-- Mest ~
Husk......-------------- eee
Leaves... 22-2 --- 2 oe een ee ee
Coconut.-.. 2-2-2 Frond...-.-------Leaves, frond..--Fruit._.. 22.2. -- eee
Banana........--------.----- Bark......-2-----Leaves..-.-------Leaves, stalks. ...-.-....---.-TAPO.. 0-0 ------ennnennnone Tuber, roots with soll..._.-.--|-----.2-.--® All counts ware corrected for the counting efficiency of Sr™¥—Y®.
» Gross beta activity of plant samples was determined in April 1956 and that of soil and water in May 1956.
0.19