高等学校化学学报

高等学校化学学报

• 研究简报 • 上一篇    下一篇

应用离子色谱离线螯合及ICP-MS测定海水中多种痕量元素

刘刚1, 2, 钟少军1, 瞿成利1, 2, 刘飞1, 2, 徐丽君1   

    1. 中国科学院海洋研究所海洋地质与环境重点实验室, 青岛266071;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2006-06-16 修回日期:1900-01-01 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 刘刚

Determination of Multiple Trace Elements in Seawater Using Chelation Ion Chromatography and ICP-MS

LIU Gang1,2, ZHONG Shao-Jun1, QU Chen-Li1,2, LIU Fei1, XU Li-Jun1   

    1. Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China
  • Received:2006-06-16 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
  • Contact: LIU Gang

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被引次数

18

摘要： 简要介绍如何构建和运用离子色谱离线螯合系统结合ICP-MS方法分析海水中的痕量元素.

关键词: 痕量元素, 海水, 离线螯合, 离子色谱, ICP-MS

Abstract: An off-line chelation system combined with ICP-MS technique was developed for the quantitative determination of trace elements in seawater, namely V, Co, Ni, Cu, Zn, Mo, Cd, Pb, U and rare earth elements(REEs). The system was built based on an ion chromatography equipped with MetPac® CC-1 chelation columns which had a strong selective chelation to these target elements within a pH range 5.2—5.6. Acidified seawater samples and NH4Ac(2 mol/L) were blended to meet suitable pH before being injected into the chelation column, thus target elements were retained while alkali and alkaline metals were excluded. Then chelated elements were eluted by HNO3(1 mol/L) and samples were collected for ICP-MS analysis. Varying the ratio of input(gen. 200 mL) to output(gen. 5 mL), the target elements which were concentrated as 40 times as their concentrations were far beyond instrumental quantification limits. At last, a certificated seawater CASS-4 was introduced and our detected values were in good agreement with those certified values.

Key words: Trace element, Seawater, Off-line chelation, Ion chromatography, ICP-MS

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