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碘盐中碘离子的分光光度测定法
引用本文:刘晓辉,陈光慈,徐清. 碘盐中碘离子的分光光度测定法[J]. 职业与健康, 2006, 22(17): 1350-1352
作者姓名:刘晓辉  陈光慈  徐清
作者单位:陕西省西安市疾病预防控制中心,710054
摘    要:
目的寻找一种测定碘盐中碘离子的简单快速的方法。方法碘盐中的碘酸根在磷酸酸性溶液中氧化碘化钾析出碘,碘与过量碘化钾形成I3^-,用723型分光光度计在351ml波长下进行测定。结果方法的线性范围0~60mg/kg,最低检出浓度为0.01mg/kg,加标回收率在95.0%~103.0%之间,相对标准偏差为0.95%~1.53%。结论该方法简单快速,结果与标准方法一致。

关 键 词:碘离子  分光光度法  碘盐
文章编号:1004-1257(2006)17-1350-03
收稿时间:2006-01-25
修稿时间:2006-01-25

Spectrometry in the Determination of Iodine Ion in Iodided Sodium Chloride
LIU Xiao-hui,CHEN Guang-ci,XU Qing. Spectrometry in the Determination of Iodine Ion in Iodided Sodium Chloride[J]. Occupation and Health, 2006, 22(17): 1350-1352
Authors:LIU Xiao-hui  CHEN Guang-ci  XU Qing
Abstract:
[ Objective]To find out a simple and rapid method for determining iodine ion in iodided sodium chloride. [Methods]Potassium iodide in phosphoric solution was oxidated by the acid radical of iodic acid, iodine was generated; the reaction of iodine and excessive potassium iodide generated I-3, type 723 spectrometer was applied for the determination with a wave length of 351 nm. [Results]The linear range was 0-60 mg/kg, the detection limit was 0.01 mg/kg, the rate of recovery was 95.0% - 103.0%, the RSD was 0.95% - 1.53%. [Conclusion]This method is simple and rapid, the result accords with that of the standard method.
Keywords:Iodine ion  Spectrometry  Iodided Sodium Chloride
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