Radio-chemical analysis of the livers of fishes caught in the Pacific Ocean in 1958

Abstract

The ashes of the livers of fishes caught in the Pacific Ocean in 1958 were analyzed for their radio contamination by the ion exchange and precipitation methods. As a result, some radio nuclides, ⁵⁹Fe, ⁶⁵Zn, ^115mCd and ⁹⁰Sr+⁹⁰Y were identified with the measurements of their halflives, absorptions and energies. The maximum concentrations of the elements determined were ⁵⁹Fe of 4.0 × 10^-3 μc, ⁶⁵Zn of 4.0 × 10^-1μc, ^115mCd of 6.3 × 10^-3 μc, and ⁹⁰Sr+⁹⁰Y of 2.5 × 10^-5 μc.