| 离子色谱-电感耦合等离子体质谱联用法测定海水中碘的形态 |
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| 引用本文： | 方黎,吴杰,苏宇亮. 离子色谱-电感耦合等离子体质谱联用法测定海水中碘的形态[J]. 现代科学仪器, 2009, 0(4): 121-123 |
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| 作者姓名： | 方黎 吴杰 苏宇亮 |
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| 作者单位： | 珠海市供水总公司水质监测研究中心,珠海,519020 |
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| 摘 要： | 本文建立了离子色谱与电感耦合等离子体质谱联用对海水中碘的两种形态——碘酸根和碘离子进行同时检测的方法，以大比例稀释和大体积进样方式消除基体干扰。实验表明，以IonPac AS14分析柱，50mmol／L（NH4）4CO3（氨水调至pH10．0）为淋洗液，1mL／min流速，1mL的进样量，海水样品稀释200倍，IO3^-和I^-的方法检测限分别为2．60ug／L和4．60ug／L。回收率为101．9％和105．1％，相对标准偏差（n=7）为1．8％和2．6％。
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| 关 键 词： | 离子色谱 电感耦合等离子体质谱 形态分析 碘 碘酸根 海水 |
Speciation Analysis of Iodine in Seawater by Ion Chromatography Coupled with Inductively Coupled Plasma Mass Spectrometry |
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| Fang Li,Wu Jie,Su Yuliang. Speciation Analysis of Iodine in Seawater by Ion Chromatography Coupled with Inductively Coupled Plasma Mass Spectrometry[J]. Modern Scientific Instruments, 2009, 0(4): 121-123 |
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| Authors: | Fang Li Wu Jie Su Yuliang |
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| Affiliation: | (Water Quality Monitoring and Research Center, Zhuhai Water Supply General Corporation, Zhuhai 519020, China) |
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| Abstract: | An implementation of ion chromatography with ICP-MS detection was described for the speciation analysis of iodine in seawater. Matrix Interference was eliminated by large scale dilution and large volume injection. In the study, IonPac AS14 analytical column, 50mmol/L （NH4）2CO3 （adjust to pH10.0 by ammonia） eluent, 1 mL/min flow rate and lmL sample injection volume were used, seawater sample was diluted 200 times. The method detection limits were 2.60ug/L for IO3^- and 4.60ug/L for I^- , The recoveries were 101.9% and 105.1%, the RSDs （n=7） were 1.8% and 2.6%. |
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| Keywords: | Ion chromatography Inductively coupled plasma mass spectrometry Speciation analysis Iodine Iodate Seawater |
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