Sv weignting ov
>i
od
and 17
tikini and Enewetex data on
bird
rampie size and bv assuming 2nat
muscle and Liver. “e are Listing in
tetection limit vaiues
Tadle 29 tne Pu concentrations from
.
tet
ek
33
tne Inewetak Padiolceicai Survey.
‘less chan’
numbers)
‘ere actual
concentracion
~alues.
Table 18 lists the Final
radionuciide concentrations
The 19-,
20-,
:0-,
and ~9-vr inte-
zral doses resuiting Zrom ingestion of
itnat vere
used along sith the estimate or fish
marine foods are given in Table 21.
ingested per dav (600 z/da) to caicu-
Strontium-90 contributes the largest
late the radionuclide intake via the
‘raction of the bone marrow dose (70
marine food chain (pCi/da).
also
includes
the
The table
-o 80x), 137 Cs
contributes approxi-~
Da and 239,240,|
mately 20%, while
concentration or
some radionuclides in trish used in the
zcontribute about 6% of the total.
The
1973 Enewetak assessment.
‘nole body dose from the marine pathvav is 50 mrem for the integrated
The species of birds that are
readily caught and inciuded in the
20-vr dose and 66 mrem for the 50-yr
diet are marine feeders, mostly
integrated dose.
species of terns.
doses are 200 mrem and 290 mrem for
Therefore,
the
The bone marrow
radionuclide concentrations in their
the 30<vr and 50-yr integral doses,
cmuscle tissue are similar to that in
respectively.
the marine diet.
are smail relative to those from other
For this reason,
These integral doses
birds and bird eggs are considered
rathways.
Dart of the marine diet for the pur-
contributes a relatively significant
239,240
poses of dose calculation.
Although the marine pathway
fraction of the total
No birds
Pu intake,
or bird eggs were collecred in June
Table 18.
1975, so the data used to evaluate
this part of the marine food chain
come from previously published
reports
8,31,32
Table 19.
Average weighted* radio~
nuclide concentrations in
fish and clams at Bikini
Atoll.
and are summarized in
Concentration,
pCi/g Wet Weight
The final concentration
data used for dose assessment listed
in Table 20 were derived assuming that
six times more bird muscle is consumed
than liver and that the wet-to-dry
Species
606,
137 og
906,
239,240,
Fish
1.51
0.14
0.076
0.0028
Clams
2.06
0.011
0.0060
0.0072
ratio is 0.33 for muscle and liver and
Enewetak Atoll 1972 Dose Assessment
9.25 for eggs.
Fish
Because of the absence
of Pu concentration data on birds and
2.0
0.39
0.075
-
*Yeighted by number of fish or clams
sird eggs on Bikini and the similarity
~27-
in the sample.