Subtoichiometric determination of indium and tin by radioactivation analysis |
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| Authors: | K Kudo H Iso T Shigematsu |
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| Institution: | (1) Ibaraki Electrical Communication Laboratory, Nippon Telegraph and Telephone Public Corporation, Tokai, Ibaraki, (Japan) |
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| Abstract: | A method of radioactivation analysis has been developed for the determination of indium and tin. It is based on substoichiometric
extraction of indium diethyldithiocarbamate into carbon tetrachloride from a slightly ammoniacal solution in the presence
of potassium cyanide. With this method, indium can be determined via116m
In (T=54 min) and tin via113m
In (T=104 min) which is formed by the reaction112Sn(n, ψ)113Sn. The method has been applied to the determination of indium in metallic zinc and of tin in tin-doped gallium arsenide,
and 0.4 ppb of indium was analyzed in a zinc sample. |
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