电感耦合等离子质谱法检测矿泉水中重金属
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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、~(45)Sc、~(72)Ge、~(89)Y、~(115)In、~(159)Tb和~(209)Bi,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。
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 elements~6Li,~(45)Sc,~(72)Ge,~(89)Y,~(115)In,~(159)Tb and~(209)Bi 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%.
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 elements~6Li,~(45)Sc,~(72)Ge,~(89)Y,~(115)In,~(159)Tb and~(209)Bi 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%.
引文
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[2]耿勇超,朱君,储文璟.ICP-MS法同时测定饮用水源水特定项目中10种痕量重金属[J].环境科技,2011,24(2):66-68
[3]刘桂华,谢建滨.电感耦合等离子体光谱和质谱法用于饮水中多元素分析的研究[J].卫生研究,2000,29(6):359-361
[4]张岚,王丽,张振伟.饮用水卫生标准及检验方法简介[J].食品研究与开发,2009,30(10):182-184
[5]李宗芮,江志刚,王境堂,等.ICP-MS法测定进出口葡萄酒中25种化学元素[J].食品研究与开发,2013,34(23):84-86
[6]董旭,何绍媛,杜杰,等.ICP-MS法测定饮用水、绿茶、大米中10种元素的含量[J].食品研究与开发,2013,34(6):73-76
[7]汪晓冬,齐红革.微波消解-电感耦合等离子质谱法检测葡萄酒中重金属[J].食品研究与开发,2010,31(8):128-130
[8]中华人民共和国卫生部.生活饮用水卫生标准:GB 5749-2006[S].北京:中国标准出版社,2006:2-6
[9]中华人民共和国国家质量监督检验检疫总局.饮用天然矿泉水:GB 8537-2008[S].北京:中国标准出版社,2008:2-3
[10]国家药典委员会.中华人民共和国药典:一部[M].北京:化学工业出版社,2010:附录49,69