电感耦合等离子体质谱法快速测定岩石、土壤中的砷、锑、铋、汞
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摘要
采用王水沸水浴溶样,电感耦合等离子体质谱法快速同时测定地球化学样品中微、痕量砷、锑、铋、汞4个元素,替代了传统经典的氢化发生-原子荧光光谱法测定4种元素的方法。在优化的实验条件下,砷、锑、铋、汞的检出限分别为0.12,0.02,0.005,0.003ug/g,测定结果的相对标准偏差(RSD,n=12)为1.3%-5.8%,准确度△Lg C=-0.08-0.08。该方法简便,成本低,检测结果准确,检出限、准确度及精密度均能达到行业规范要求,可用于大批量地球化学样品生产分析。
Lead by boiling water bath digestion, simultaneous determination of geochemical samples in micro and trace arsenic, antimony, bismuth, mercury 4 elements by inductively coupled plasma mass spectrometry, the alternative method for the determination of 4 elements by classic-atomic fluorescence spectrometry. Under the optimized experimental conditions, the detection limit of arsenic, antimony, bismuth and mercury were 0.12, 0.02, 0.005, 0.003ug/g, the relative standard deviation(RSD, n=12) is 1.3%-5.8%, the accuracy of delta Lg C =-0.08-0.08. The method is simple, low cost, accurate detection results, detection limits, accuracy and precision can meet the requirements of industry specifications, can be used in the production of large quantities of geochemical samples.
Lead by boiling water bath digestion, simultaneous determination of geochemical samples in micro and trace arsenic, antimony, bismuth, mercury 4 elements by inductively coupled plasma mass spectrometry, the alternative method for the determination of 4 elements by classic-atomic fluorescence spectrometry. Under the optimized experimental conditions, the detection limit of arsenic, antimony, bismuth and mercury were 0.12, 0.02, 0.005, 0.003ug/g, the relative standard deviation(RSD, n=12) is 1.3%-5.8%, the accuracy of delta Lg C =-0.08-0.08. The method is simple, low cost, accurate detection results, detection limits, accuracy and precision can meet the requirements of industry specifications, can be used in the production of large quantities of geochemical samples.
引文
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[2]李刚.原子荧光法同时测定岩石样品中的微量Bi、Hg[J].地质实验室,1996,5(12):271.
[3]邱宏喜.原子荧光光谱法直接连续测定化探样品中的As、Sb、Bi、Hg[J].黄金地质,1999,1(5):73.
[4]魏建录,宋海涛,王海潮等.氢化物发生一双道原子荧光光谱法测定化探样品中砷锑铋[J].岩矿测试,2010,29(4):451—454.
[5]何红蓼,李冰,韩丽荣,等.封闭压力酸溶一ICP-MS法分析地质样品中47个元素的评价[J].分析试验室,2002,21(5):8一12.
[6]张秀武,李永华,杨林生,等.温控湿法消解ICP-MS测定全铅中铅镉硒砷汞5种微量元素[J].光谱学与光谱分析,2010,7(30):1972-1974.