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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Simultaneous Multielement Determination of Hydride- and Oxoanion-Forming Elements in Seawater by Inductively Coupled Plasma Mass Spectrometry after Lanthanum Coprecipitation
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Simultaneous Multielement Determination of Hydride- and Oxoanion-Forming Elements in Seawater by Inductively Coupled Plasma Mass Spectrometry after Lanthanum Coprecipitation

机译：镧共沉淀-电感耦合等离子体质谱法同时测定海水中的氢化物和氧阴离子

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摘要

The simultaneous multielement determination of trace elements in seawater, especially hydride- and oxoanion-forming elements, has been investigated by inductively coupled plasma mass spectrometry with the aid of lanthanum coprecipitation preconcentration. The optimum pH in lanthanum coprecipitation was pH 9.5; at this value, trace elements were well recovered and major constituents of seawater such as Na, Mg, K, and Ca were significantly reduced in the concentrated solutions. The recovery values obtained for V, Cr(III), Mn, As(III), As(V), Se(IV), Y, Sn, Sb(III), Sb(V), W, Bi, and U were more than 85% after lanthanum coprecipitation, while Cr(VI), Se(VI), and Mo(VI) provided poor recoveries of less than 30%. The reproducibility for coprecipitation was within 5% as relative standard deviation. The present method was applied to the determination of trace elements in coastal seawater reference material CASS-3. The analytical values for Mn, As, V, Y, Sb, W, and U were in fairly good agreement with the certified or literature values.
机译：借助于镧共沉淀的电感耦合等离子体质谱法，研究了同时测定海水中痕量元素，尤其是氢化物和氧阴离子的多元素测定方法。镧共沉淀的最佳pH为9.5。在此值下，可以很好地回收微量元素，并且浓缩溶液中的海水中的主要成分（如Na，Mg，K和Ca）显着减少。对V，Cr（III），Mn，As（III），As（V），Se（IV），Y，Sn，Sb（III），Sb（V），W，Bi和U的回收率值为镧共沉淀后超过85％，而Cr（VI），Se（VI）和Mo（VI）提供的回收率不足30％。共沉淀的重现性相对标准偏差在5％以内。本方法用于沿海海水参考物质CASS-3中微量元素的测定。 Mn，As，V，Y，Sb，W和U的分析值与认证值或文献值相当吻合。

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