Cs,
90.
“Sr 3
2394240
Pu, and
241
Am for the 0AS
to 40- and 0- to 10-cm soil depths for all atolls except Bikini.
Concentration ratio (pCi/g wet plant: pCi/g dry soil)
Sample
code
137¢5
number
Food
90s,
0-40 cm
0-lOcm
0-40cm
239+240pya
0-10cm
0-40cm
0-10cm
91
Pandanusfruit
2.2
0.98
0.33
0.096
6.8e-42
216-4
100
Breadfruit
2.6
1.3
0.02!
0.12
2.7e-4
8.6e-4
I11
Drinking coconut juice
0.48
0.22
0.0014
0.013,
0.0015
0.011
8.8e-4
1.4e-3
121
Drinking coconut meat
2.2
1.0
0.013
0.011
2.le-3
[.4e-3
122
Copra meat
3.0
1.4
0.013
0.011
2.le-3
1.4e-3
123
Sprouting coconut
2.7
1.3
0.013
0.011
2.le-3
1.4e-3
124
Marshallese caked
3.0
1.4
0.013
0.011
2.1e-3
1.4e-3
130
Papaya
3.0
1.7
--
0.022
--
--
14Q
Squash
1.8
0.76
--
--
--
--
160
Banana
0.35
0.16
--
--
--
92
Pandanus nut©
112 Coconut milk?
2.2
3.0
0.98
1.4
0.33
0.096
6.8e-4
ele~3—
0.0095
2.le-4
Le
4 Concentration ratios for 241 Am are similar to those for 239+240py,
Value following e notation indicates power of ten. For example, 5.le-4 is equal to
5.1 x 1077.
C Assumed to be the same as Pandanusfruit.
Assumedto be the same as copra meat.
We were also unable to collect coconut crabs at all atolls.
For atolls other than
Rongelap, Utirik, Rongerik, and Ailinginae where coconut crabs were collected at one or
several islands, the average radionuclide concentration was used for the entire atoll.
When no coconut crabs were found, the radionuclide concentration was determined by
using the average value observed at the atolls where coconut crabs were collected
because the external gamma measurements and radionuclide concentrations in soil and
vegetation were very similar.
For Rongelap, Utirik, Rongerik, and Ailinginae, direct
measurements or concentration ratios were used.
18
evenspasar ReesMTREt SATE
137
Table 2. Average concentration ratios for