during the Hardtack test series.
Rhodium-102 was detected in
the sample and the identity of the isotope was confirmed by
several radiochemical techniques and by gamma energy determinations.
The amount of the isotope was related to the levels
of fission products in the sample.
Radiochemical separations were made on samples of sea water
and bottom material collected in the target area of a nuclear
device detonated inside of Eniwetok lagoon.
The sea water was
divided into particulate and soluble fractions.
Samples of
bottom material were treated with eighteen different eluents
over a pH range of 1 to 13 and the amounts of cobalt-60,
conium-95,
ruthenium-106,
cerium-144,
zir-
and stable calcium re-
moved by the different eluents were determined.
Samples of plankton and water collected during the Rehoboth,
Collett,
and Silverstein surveys were subjected to radiochemi-
cal and gamma spectrum analyses.
The Rehoboth data have been
published and the Collett-Silverstein paper is almost completed.
The radioisotope content in the organs of the clams Tridacna
and Hippopus was related to the amounts of stable elements
same samples.
of individual
in the
The effects of stable element content on uptake
radioisotopes were studied by this method.
A survey paper on the marine biological investigations at the
Eniwetok Test Site was prepared for presentation at the Monaco