电感耦合等离子体质谱法测定尘土样品中贵金属元素的研究  

Study on Determination of Noble Metal Ions in Environmental Dust Samples by Inductively Coupling Plasma-mass Spectrometry

作　　者：樊瑛[1] 黄云[1] 孟昭宇 缪明明 高诚伟[1] 

机构地区：[1]云南大学化学科学与工程学院,云南昆明650091 [2]红塔烟草(集团)有限责任公司技术中心,云南玉溪653100

出　　处：《干旱环境监测》2007年第2期71-74,共4页Arid Environmental Monitoring

基　　金：国家自然科学基金(20471051);云南省自然科学基金(05E024M);云南省中青年学术带头人培养基金(2004PY01-32)资助项目

摘　　要：建立了用电感耦合等离子体质谱法（ICP-MS）测定尘土样品中贵金属元素Au、Pt、PdI、r、Ru、Rh的方法。样品用王水微波消解后,试液直接用ICP-MS同时测定上述6种贵金属元素。以Sc、YI、n作为内标物质,补偿了基体效应;选择适当的待测元素同位素克服了质谱干扰;确定了最佳测定条件。结果表明,6种贵金属元素的检出限为0.004-0.006μg/L,线性关系良好,相关系数r≥0.999 2,回收率为83%-97%,RSD〈3.6%。该法准确、快速、简便,已成功地应用于尘土样品中微量贵金属元素的测定。The determination of six noble metal ions （Au, Pt, Pd, Ir, Ru, Rh） in environmental dust samples by inductively coupling plasma-mass spectrometry （ICP- MS） was studied. The samples were digested in aqua regia with a microwave oven. The Sc, Y, In were added as internal standards to eliminate the matrix interferences. The results show that the relative standard deviations for most of these trace noble ions were below 3.6 %, the standard recoveries of these elements were in the range of 83 % - 97 %, and the detection limits were in the range of 0.004- 0.006 μg/L. This method is accurate, rapid, convenience, and can be applied to the determination of Au, Pt, Pd, Ir, Ru, Rh In environmental dust samples.

关 键 词：尘土样品 贵金属元素 电感耦合等离子体质谱法 

分 类 号：X830.2[环境科学与工程—环境工程]