Nickel-63 in Marine and Terrestrial Biota, Soil, and Sediment

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Science  06 Jun 1969:
Vol. 164, Issue 3884, pp. 1161-1163
DOI: 10.1126/science.164.3884.1161


A previously unreported radionuclide, nickel-63 (half-life, 92 years), produced in the testing of nuclear devices, was measured in biological and environmental samples from areas of the Pacific Ocean and the eastern seaboard of the United States. The concentrations of nickel-63 are low (maximum of 163 disintegrations per minute per gram of dry weight), but this radionuclide may be a useful tracer of oceanic processes because of its long half-life and long residence time in the ocean.

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