论文部分内容阅读
研究了离子色谱法分析加碘食盐中的微量碘的分析方法.用硫化钠将加碘盐中的碘酸根还原成碘离子,用乙醇提取碘离子,用较高浓度的碳酸钠-碳酸氢钠淋洗液;紫外检测波长215nm;碘的回收率在96.1%～99.8%之间.方法简便、快速.
The method for the analysis of trace iodine in iodized salt by ion chromatography was studied.The iodate in iodized salt was reduced to iodide by sodium sulfide and the iodide ion was extracted by ethanol and sodium iodate was extracted with higher concentration of sodium carbonate and sodium bicarbonate Eluent; UV detection wavelength of 215nm; iodine recovery rate of 96.1% ~ 99.8%. Method is simple and fast.