| 微波密闭消解-等离子体质谱法测定岩石样品中的稀土元素 |
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| 引用本文： | 马英军,刘丛强.微波密闭消解-等离子体质谱法测定岩石样品中的稀土元素[J].岩矿测试,1999,18(3):189-192. |
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| 作者姓名： | 马英军 刘丛强 |
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| 作者单位： | 中国科学院地球化学研究所环境地球化学国家重点实验室,贵阳,550002 |
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| 基金项目： | 国家杰出青年科学基金,国家攀登计划预选项目 |
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| 摘 要： | 建立了有微波密封ＨＦ＋ＨＮＯ３消解样品，等离子体质谱测定岩石样品中１５个稀土元素的分方法。用该方法对国内外岩石标准品进行测定，结果表明稀土元素的测定值与标准值之间的相对偏差小于５％，检出限为（０．１－０．９）＊１０＾－９，多次测定结果的相对标准偏差在１．３％－５．２％。各类实际岩石样品中稀土元素的分析结果均与地质规律相符，进一步证明了方法的可靠性。
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| 关 键 词： | 稀土元素 电感耦合 等离子体质谱 岩石样品 |
| 修稿时间： | 1998-10-26 |
Determination of Rare Earth Elements in Rock Samples by ICP-MS Using Microwave Digestion |
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| MA Ying-jun,LIU Cong-qiang,QI Liang,HUANG Rong-gui,PENG Jian-hua.Determination of Rare Earth Elements in Rock Samples by ICP-MS Using Microwave Digestion[J].Rock and Mineral Analysis,1999,18(3):189-192. |
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| Authors: | MA Ying-jun LIU Cong-qiang QI Liang HUANG Rong-gui PENG Jian-hua |
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| Abstract: | A simple method for the determination of rare earth elements (REEs) in rocks by inductively coupled plasma mass spectrometry(ICPMS) has been developed. Rock samples were dissolved using distilled HF HNO3 in microwave oven. Such a sample digestion process can minimize the contamination and lower the analytical blank and limits of determination. Experimental conditions and the factors affecting the determinations were discussed. The method has been applied to the determination of REEs in the standard reference rock samples. The detection limits of the method for REEs are (0.10.9)10-9. The relative deviations of REE concentration between the determined and certified values in the standard reference rock samples are less than 5% with precision of less than 5.2% RSD (n=5). Simple and straightforward of sample preparation, good accuracy and precision are the remarkable characteristics of this method.\=\= |
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| Keywords: | rare earth element inductively coupled plasma mass spectrometry(ICPMS) microwave digestion rock |
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