Title: DETERMINATION OF Sr$sup 90$ AND Th$sup 228$ IN BIOLOGICAL MATERIALS
Abstract: Methods were developed for the analysis of dog feces for Sr/sup 90/ and Th /sup 228/. The Sr/sup 90/ determination is an adaption of the Sr(NO/sub 3/)/ sub 2/ precipitation method to separate Sr and Ca. An initial basic precipitation separates Sr/sup 90/ from a troublesome, unidentified constituent of the samples. In the determination of Th/sup 228/, two precipitations with H/ sub 2/O/sub 2/, first at pH 2 and then at pH 9, precede the coprecipitation of Th/ sup 228/ with ceric m-nitrobenzoate. Finally, Th/sup 228/ is obtained carrier- free using an ion exchange column. (auth)
Publication Year: 1963
Publication Date: 1963-02-01
Language: en
Type: article
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