分析化学2011，Vol.39Issue(10)：1582-1588,7.DOI:10.3724/SP.J.1096.2011.01582
激光剥蚀电感耦合等离子体质谱分析硅酸盐矿物基体效应的研究
Investigation on Matrix Effects in Silicate Minerals by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry
摘要
Abstract
Matrix effect between reference materials and samples plays an important role in the accuracy of analytical results by LA-ICP-MS. And elemental relative sensitivity factor(RSF) is an important characterization of matrix effect. We investigated the differences of RSFs of 49 common elements in 17 silicate glass reference materials and 10 major and minor elements in 10 natural silicate mineral reference materials of EMPA, compared different internal standard elements (Ca, Al, Si) to compensate for matrix effect and discussed the influences of element fractionation effect on the RSFs. The results showed that the differences of matrix effect in glass reference materials or silicate minerals were both inapparent. And RSDs of RSFs between glass reference materials and minerals were all less than 8%. In particular, the differences of matrix effect between glass reference materials with natural geological matrix and basalt matrix and silicate minerals were smaller. Ca was an ideal internal standard for analyzing silicate mineral samples. Because of slight fractionation behavior, Si was not an ideal internal standard than Ca and Al. The same elements in silicate glass reference materials and minerals had similar but not serious fractionation behaviors. 27 elements in forsterite were analyzed by external calibration in conjunction with internal standardization. The results showed that the relative errors of major elements were nearly all superior to 4% and minor and trace elements also obtained satisfactory results.关键词
激光剥蚀-电感耦合等离子体质谱/硅酸盐矿物/玻璃标样/基体效应/相对灵敏度因子/元素分馏效应Key words
Laser ablation-inductively coupled plasma-mass spectrometry/ Silicate minerals/ Glass reference materials/ Matrix effect/ Relative sensitivity factor/ Element fractionation effect引用本文复制引用
袁继海,詹秀春,孙冬阳,赵令浩,范晨子,蒯丽君,胡明月..激光剥蚀电感耦合等离子体质谱分析硅酸盐矿物基体效应的研究[J].分析化学,2011,39(10):1582-1588,7.基金项目
本文系科技部创新方法工作专项(No.20091M032200)及国土资源大调查项目(No.1212011120276)资助 （No.20091M032200）
