离子色谱-电感耦合等离子体质谱联用法同时分析水中碘酸根和碘离子  

Analysis of iodate and iodine ion in water by ion chromatography(IC) coupled with inductively coupled plasma mass spectrometry(ICP-MS)

作　　者：苏宇亮 吴杰[1] 方黎[1] 冯兆敏[1] 胡克武[1] 曾锦明[1] 

机构地区：[1]珠海市供水总公司水质监测研究中心,珠海519020

出　　处：《给水排水》2008年第7期29-31,共3页Water & Wastewater Engineering

摘　　要：以离子色谱与电感耦合等离子体质谱联用法对水中碘的两种形态:碘酸根和碘离子进行同时检测,对流动相、记忆效应、进样量进行了研究。试验表明,以IonPac AS14分析柱,30mmol/L(NH4)2CO3(氨水调至pH10)为淋洗液,1mL/min流速,1mL的进样量,IO3-和I-的方法检测限(MDL)分别为0.066μg/L和0.045μg/L,回收率分别为95.7%和103.4%,相对标准偏差(n=7)为1.42%和1.86%。An implementation of IC with ICP - MS detection was described for the analysis of iodate and iodine ion in water. Mobile phase, memory effect and sample size were studied. The results showed that using IonPac AS14 analytical column, with 30 mmol/L（NH4）2CO3 （adjust to pH 10 by ammonia） as eluent, at 1 mL/min flow rate and 1 mL sample injection volume has the detection limits（MDL）of 0. 066 μg/L and 0. 045 lag/L for IO3^- and I^- respectively. The recoveries were 95.7% and 103.4%, and the RSDs（n=7） were 1.42% and 1.86%.

关 键 词：离子色谱 电感耦合等离子体质谱 形态分析 碘酸根 碘离子 

分 类 号：O657.63[理学—分析化学] O657.75[理学—化学]