基于孔雀石绿-氯胺T体系动力学分光光度法测定痕量碘
[Determination of trace iodine based on kinetic-spectrophotometry with malachite green-chloramine T system].
作者信息
Li J G, Wei Y Q, Shen K
机构信息
Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China.
出版信息
Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Oct;21(5):726-8.
In this paper, a new kinetic-spectrophotometric method for the determination of trace amount of iodine has been proposed. It is based on the iodine catalysed the reaction of malachite green oxidized by chloramine T in hydrochloric acid medium. The method is sensitive, simple and with good selectivity. The linear range of determination of iodine is 0-48 micrograms.L-1, the detection limit is 4.9 x 10(-10) g.mL-1. The method has been used for the determination of trace amount of iodine in food with satisfactory results.
本文提出了一种测定痕量碘的新的动力学分光光度法。该方法基于在盐酸介质中碘催化孔雀石绿被氯胺T氧化的反应。该方法灵敏、简便且选择性好。碘的测定线性范围为0 - 48微克·升⁻¹，检出限为4.9×10⁻¹⁰克·毫升⁻¹。该方法已用于食品中痕量碘的测定，结果令人满意。
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