Determination of iodine in organic iodine compounds by non-equilibrium isotope exchange in a heterogeneous exchange system |
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| Authors: | Y. Takahashi N. Ikeda |
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| Affiliation: | (1) Institute of Chemistry, The University of Tsukuba, Sakura-mura, 305 Ibaraki, (Japan);(2) Japan Women's University, Mejiro, 112 Tokyo, (Japan) |
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| Abstract: | Some water-soluble organic iodine compounds (aqueous solution) can be analyzed for iodine by isotopically exchanging with labelled elementary iodine (organic solution). The method is applicable to exchange systems in which the rate of the exchange is rather small but measurable, before the exchange equilibrium is attained. The iodine content of iodoaromatic amino acids such as 5-iodouracil and 3,5-diiodotyrosine can be determined within an error of ±4%. |
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