离子色谱法测定微量碘的检测器应用研究  

THE APPLICATION VARIOUS DETECTORS TO THE IC-DETERMINATION OF IODIDE

作　　者：刘克纳[1] 牟世芬[1] 柴成文[2] 

机构地区：[1]中国科学院生态环境研究中心,北京100085 [2]北京科技大学化学系

出　　处：《理化检验（化学分册）》2001年第8期337-338,342,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：以NaOH为淋洗液 ,分别使用电导、直流安培和紫外检测器优化了碘的离子色谱分离和测定条件 ,检出限分别为 30 ,1和 2 5 μg·L- 1。选用安培检测法测定了奶粉中低于 10 0 μg·L- 1的微量碘 ,回收率达到 89.0 %Optimization of the conditions of ion chromatographic determination of trace amounts of iodide with three different detectors, (i.e. conductivity detector, DC amperometric detector and UV spectrophotometric detector) is described in this paper. Dilute NaOH solution is used as eluent. Detection limits obtained for the alove mentioned detectors are 30, 1 and 25μg·L -1 (signal to noise ratio 3) respectively. The DC amperometric detector is used in the determination of micro amounts of iodide (<100μg·L -1 ) in milk powder samples and a recovery of 89 0% is achieved.

关 键 词：离子色谱法 碘离子 检测器 奶粉 安培检测法 测定 分析 分离 

分 类 号：TS252.51[轻工技术与工程—农产品加工及贮藏工程] TS252.7[轻工技术与工程—食品科学与工程]