碘离子选择电极测定饮用水中的总碘  

Determination of total iodine in drink water by selective electrode

作　　者：刘俐枚 

机构地区：[1]邵阳市环境保护监测站,湖南邵阳422000

出　　处：《邵阳学院学报（自然科学版）》2007年第3期90-92,共3页Journal of Shaoyang University：Natural Science Edition

摘　　要：本实验应用碘电极,采取了对水样的前处理步骤;选择了亚砷酸钠作碘的还原剂,碳酸-碳酸氢钠为总离子强度调节缓冲液的R-TISAB液;以改进的"Gran作图"直角坐标法计算结果.实验表明,本方法的准确度、精密度及检出限均达到较理想的水平,可以满足对缺碘地区水中碘含量的监测需要.This experiment applies the iodine electrode, adopted processed the step to water sample front[1].Chose the sodium arsenite to make the reducing agent of the iodine, the carbonic acid - sodium bicarbonate for total ion intensity adjustment cushion fluid [2]. Improves ＂Gran mapping＂ of computed result of rectangular coordinate method .The experiment indicated that.Accuracy, the accuracy and pick out limits of this method achieved a more ideal level, it can satisfy requirement to monitor indine of water in lacking iodine area.

关 键 词：饮用水 碘 离子选择性电极 测定 

分 类 号：TQ113.72[化学工程—无机化工]