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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Multielement Determination of Trace Elements in Coastal Seawater by Inductively Coupled Plasma Mass Spectrometry with Aid of Chelating Resin Preconcentration
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Multielement Determination of Trace Elements in Coastal Seawater by Inductively Coupled Plasma Mass Spectrometry with Aid of Chelating Resin Preconcentration

机译：螯合树脂预富集-电感耦合等离子体质谱法测定沿海海水中微量元素

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摘要

The multielement determination of trace elements in coastal seawater by inductively coupled plasma mass spectrometry has been investigated with the aid of chelating resin preconcentration. First, each coastal seawater sample (250 ml) was treated with a chelating resin (Chelex 100) at pH 6 for preconcentration of trace elements. After filtration with a glass filter, the resin on the filter was carefully rinsed with 8 ml of 1 M ammonium acetate solution. Then, trace elements adsorbed on the resin were eluted with 6 ml of 2 M HNO_3. As a result, the preconcentration factor of 41.7 fold was obtained, with the total concentration of matrix elements (A, K, Mg, and Ca) less than 200 mg dm~(-3). The recovery values were larger than 80% for 22 elements among 29 elements determined. The present method was applied to the determination of trace elements in the coastal seawater certified reference material CASS-3, issued from Natioanl Research Council of Canada (NRC), as well as to the coastal seawater sample collected from Tokoname off-shore.
机译：借助螯合树脂预浓缩技术，研究了电感耦合等离子体质谱法测定沿海海水中痕量元素的多元素。首先，将每个沿海海水样品（250毫升）用螯合树脂（Chelex 100）在pH 6下进行处理，以对痕量元素进行预浓缩。用玻璃滤器过滤后，将滤器上的树脂用8 ml 1 M乙酸铵溶液小心冲洗。然后，用6 ml的2 M HNO_3洗脱吸附在树脂上的微量元素。结果，获得了41.7倍的预浓缩因子，基质元素（A，K，Mg和Ca）的总浓度小于200 mg dm〜（-3）。在确定的29种元素中，22种元素的回收率均大于80％。本方法用于测定加拿大国家海洋研究委员会（NRC）发布的沿海海水认证参考物质CASS-3中的微量元素，以及从常滑海岸近海收集的沿海海水样品。

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