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

Determination of Rare Earth Elements in Rock Samples by ICP-MS Using Microwave Digestion

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。

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