利用同一化学流程分析地质样品中的铂族元素含量和铼-锇同位素组成
Platinum group elements and Re-Os isotope analyses for geological samples using a single digestion procedure
查看参考文献37篇
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文摘
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报道了利用一次溶样和同一化学流程分离富集地质样品中铂族元素(Pt、Pd、Os、Ir和Ru)和Re的方法。该化学流程包括以下几个步骤:(1)Carius管溶样法分解岩石样品中富集铂族元素的矿物;(2)四氯化碳萃取法分离出Os;(3)微蒸馏法进一步纯化Os;(4)阳离子交换树脂法将铂族元素(Pt、Pd、Ir和Ru)以及 Re与主要的基体阳离子分离;(5)利用“钽试剂”螯合树脂将干扰元素(Zr、Hf、Mo和W等)分离。铂族元素(Pt、Pd、Ir和Ru)以及Re的含量采用同位素稀释-电感耦合等离子体质谱法(ID-ICPMS)测定,Os含量和同位素组成利用同位素稀释-热电离质谱(ID-TIMS)测定。对国际岩石标准橄榄岩(WPR-1)和玄武岩(BHVO-2)的重复分析测定结果表明,测定结果与参考值吻合。 |
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其他语种文摘
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Here we report a chemical procedure for separating platinum group elements(PGEs,Os,Ir,Pt,Pd,Ru)and Re using a single sample digestion.The procedure consists of the following five steps:(1)sample dissolution via Carius tube technique;(2)separation of Os from the PGEs and Re and other matrix elements using CCl4 solvent extraction;(3)purification of Os using micro-distillation method;(4)separation of PGEs and Re from other matrix elements on cation exchange resin;(5)the interference elements,such as Zr,Hf,Mo and W,were separated from the PGEs and Re fraction solution by“BPHA”chelated resin.The concentrations of PGEs(Pt,Pd,Ru and Ir)and Re were determined by isotope dilution-inductively coupled plasma mass spectrometry(ID-ICPMS);the abundance and isotopic composition of Os were measured using isotope dilution-negative thermal ionization mass spectrometry(ID-NTIMS).The analytical results of PGEs and Re-Os isotopic system for international rock reference materials show good agreement with previous reported data. |
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来源
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地球化学
,2011,40(4):372-380 【核心库】
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关键词
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铂族元素
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铼-锇同位素
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阳离子交换树脂
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“钽试剂”螯合树脂
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热电离质谱
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电感耦合等离子体质谱
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地址
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1.
中国科学院广州地球化学研究所, 同位素地球化学国家重点实验室, 广东, 广州, 510640
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中国科学院南海海洋研究所, 广东, 广州, 510301
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0379-1726 |
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学科
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地质学 |
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基金
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国家自然科学基金国家杰出青年科学基金
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广东省自然科学基金
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文献收藏号
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CSCD:4304638
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