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Determination of tin in indium by neutron activation with pre-irradiation separation

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Abstract

Prior to irradiation tin is separated from a 1 g indium sample by iodide extraction followed by precipitation with Pb(OH)2. The amounts of tin introduced as contaminant before pre-irradiation treatment do not exceed 0.1 μg in most cases. After irradiation in a thermal neutron flux of 5·1013 n·cm−2·sec−1 and suitable cooling the tin is extracted substoichiometrically with BPHA. The content of tin is determined on the basis of the 158 keV photopeak of117mSn in the γ-spectrum. Other photopeaks appearing in the spectrum indicate the presence of various isotopes, it is then not possible to determine tin on the basis of counting121Sn β-rays. The lower limit of determination is 0.2 ppm.

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Authors and Affiliations

  1. Department of Application of Isotopes in Metallurgy and Metal Technology, Institute of Nuclear Research, ul. Dorodna 16, Warsaw, (Poland)

    H. Jaskólska

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  1. H. Jaskólska
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Jaskólska, H. Determination of tin in indium by neutron activation with pre-irradiation separation. J. Radioanal. Chem. 25, 89–97 (1975). https://doi.org/10.1007/BF02519540

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  • DOI: https://doi.org/10.1007/BF02519540

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