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食品研究与开发:2019,40(4):154-157
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电感耦合等离子质谱法检测矿泉水中重金属
(天津天士力集团研究院,天津300402)
Determination of Heavy Metal in Mineral Water by ICP-MS
(Tianjin Tasly Pharmaceutical Co.,Ltd.,Tianjin 300402,China)
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投稿时间:2018-08-13    
中文摘要: 建立电感耦合等离子质谱(inductively coupled plasma mass spectrometry,ICP-MS)检测矿泉水中Be、B、Cr、Mn、Ni、Cu、As、Mo、Ag、Cd、Sb、Ba、Hg和 Pb 14 种重金属的方法。采用硝酸直接酸化前处理方法,在线加入内标元素6Li、45Sc、72Ge、89Y、115In、159Tb和209Bi,用ICP-MS进行测定。14种元素在各自的线性范围内线性关系良好(相关系数R>0.999 3),检出限在0.003 1 ng/mL~0.576 0 ng/mL之间,回收率在78.3%~137.5%之间,RSD在1.3%~17.5%之间。
Abstract:Abstract:A method for determination of heavy metal (Be,B,Cr,Mn,Ni,Cu,As,Mo,Ag,Cd,Sb,Ba,Hg and Pb)in mineral water by inductively coupled plasma-mass spectrometry(ICP-MS)was developed.After direct acidification using nitric acid pre-treatment method,internal standard elements6Li,45Sc,72Ge,89Y,115In,159Tb and209Bi were added online and the samples were determined by ICP-MS method.The correlation coefficients of the standard curves of fourteen elements were larger than 0.999 3.Determination limits of these fourteen elements were in the range of 0.003 1 ng/mL-0.576 0 ng/mL,the recoveries were 78.3%-137.5%,and RSD were 1.3%-17.5%.
文章编号:201904029     中图分类号:    文献标志码:
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