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对于微量碘的测定一般采用分光光度法,本文依据[Cd(Phen)_3]~(2+)与I~-可以形成[Cd(Phen)_3]~(2+) (I~-)_2离子对的原理,用硝基苯萃取,通过测定有机相中镉的含量.间接测定碘,用于含碘食品的测定.结果令人满意.1 实验部分
For the determination of trace iodine, spectrophotometry is generally used. In this paper, [Cd (Phen) _3] ~ (2+) (I ~ On the principle of extraction with nitrobenzene, by measuring the content of cadmium in the organic phase.Indirect determination of iodine for the determination of iodine-containing food.The results are satisfactory.1 Experimental part