RADIONUCLIDES IN PLANKTON NEAR THE MARSHALL ISLANDS, 1956
Radiochemical separations were made on plankton samples collected in and west of the Eniwetok Proving Ground in September 1956. Ion exchange resin column and precipitation techniques were used. Fission products, mainly Zr/sup 95/-Nb/ sup 95/ and Ce/sup 144/Pr/sup 144/, contributed an average of 29% of the total radioactivity. The remaining 71% of the activity was contributed by the non- fission radioisotopes Zn/sup 65, Co /sup 57,58,60,/ and' Mn/sup 54/. Radio active zinc, cobalt, and iron acconted for averages of 24, 26, and 21%, respectively, of the total radioactivity. Mn/sup 54/ was present in trace amounts. Variations in ratio of occurrence for the different non-fission products with change in geographical location was observed. Relatively high levels of Zn/sup 65/ were centered in the area near Bikini and Eniwetok Atolls. The area of high levels of radioactive cobalt and iron in comparison to Zn/sup 65/ was located approximately 480 miles west and slightly north of Eniwetok Atoll. (auth)
- Research Organization:
- Washington. Univ., Seattle. Applied Fisheries Lab.
- DOE Contract Number:
- AT(45-1)540
- NSA Number:
- NSA-13-002880
- OSTI ID:
- 4291148
- Report Number(s):
- UWFL-54
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- United States
- Language:
- English
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