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and to relate the food-species radioactivity to other indigenous
so{ls,
The unique
non-food species Khich my have indicator species potent{al.
information that this survey will provide 1s:
1.
Soli-to-plent, and soil-to-fruit concentration factors for
2.
The relationship between food species and non-food species
8.
The relationship between total soft radioactivity and the
radioactivity which {s eveilable to the plant in the sof?
solution at the time of sempling.
.
4.
The reletionship of vegetation, soil, soil weter, litter and humus
{n the overall cycling of radionuciides {n mature food crops.
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detectable redionuciides.
at the sam: locétion.
The relationship of lens water radioactivity to that tn soft
water and plants roving above the lens zone in order to determine
the rate of loss Ptime dependent. information} from the coral atoll
environment.
-
6.
Intra-islend varfability in vegetation radfonuctide concentrations.
7.
Supply the data bese for assessment of terrestrial food chetn
transfer of radioactivity from the soit to man for long term dose
eveluation upon rehabilftation of the atoll.
“Kethods and Measurements: |
The sempling program will therefore consist of integrated sample series
composed of food species and sot] profile samples which wil) be obtained on
én ad hoc, specfes svatteble basis.
A broader sampling progran which will
be based upon a widely available species, probably Kesserschnidtsa or Scaevols,
Wit} also be carried ovt to determine the intra-tslend vartetions in vegetation radioactivity. These date will be valveble in reconmending future
cortcultural sites snd to correlate with the broad sofl redioactivity survey
and the serial survey.
-
An attempt will be made to correlate some sampling sites with the |
ground-water survey Lo provide data on the cycling of radionuctides at the
given site. Al} food species presently proving and fruiting on Bikini will
be sénpied in triplicate {f the quantity of material permits. Sofl profiles
(2/tree) will be obtzined in the root vone of the tree sanmied to determine
the concentration of radtoactivity in the soil, the soil] water and the
orgentc frection.
A large sample of sotl (3 ko.) from the organic zone of
the soil (1-30 cm. depth) Will be taken to make a leaching neasurement of
$037 solution radioactivity. Both leaves and fruit will be sampled to
permit leaf-to-frutt transfer coefficients toa be calculated. Kon-food
species will also be sampled in the vicinity of the food species to provide
information on species vartetion tn radionuciide uptake, end to evaluate the
use of non-food specfes concentrations in predictive assessment of human
DOE ARCHIVES
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