一种测定微量碘离子的简便偶合化学发光法  

A Simple Coupling Chemiluminescence Method for the Determination of Micro Iodide Ion

作　　者：朱昌青[1] 王伦[1] 李永新[1] 高峰 

机构地区：[1]安徽师范大学化学系,芜湖241000

出　　处：《分析化学》1997年第5期570-572,共3页Chinese Journal of Analytical Chemistry

基　　金：安徽省教委科学研究基金资助项目

摘　　要：报道了在含Ｉ－的Ａｓ（Ⅲ）和罗丹明Ｂ混合溶液中直接注射Ｃｅ４＋，通过记录化学发光持续时间对微量Ｉ－进行定量的偶合化学发光法。检出限为６．０ ×１０－８ｍｏｌ／Ｌ，线性响应的浓度范围为１．０×１０－７～１．０×１０－５ｍｏｌ／Ｌ。该法简便易行，所受的干扰小，用于加碘食盐、酱油及实际水样中微量Ｉ－的测定，结果满意。A new method of coupling chemiluminescence is reported for the determination of micro iodide ion based on the lasting time of chemiluminescence produced by injecting Ce (Ⅳ) to a mixed solution of As(Ⅲ) and rhodamine B in the presence of I-. The detection limit of the method is 6. 0 x 10-8 mol/L and the linear range is 1. 0 x 10-7-1. 0x10-5mol/L. This method with high selectivity is simple and can be applied to the determination of micro iodide ion in soy sauce, iodized salt and water sample with satisfactory results.

关 键 词：偶合化学发光 碘 罗丹明B 铈 砷 

分 类 号：O613.44[理学—无机化学]