ICP-MS测定中药煎制前后8种重金属元素的含量及溶出率  

Contents and Dissolutions of 8 Heavy Metals in Before and After Decoctions of Traditional Chinese Medicines by ICP-MS

作　　者：罗艳[1] 黄文琦[1] 龙智翔[1] 邓敏军 

机构地区：[1]广西壮族自治区分析测试研究中心无机室,南宁市530022 [2]广西壮族自治区环境监测中心站综合室,南宁市530022

出　　处：《光谱实验室》2012年第2期925-928,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：广西壮族自治区直属公益性科研院所基本科研业务费专项项目(2009ACZ01)

摘　　要：建立电感耦合等离子体-质谱法(ICP-MS)测定5种药材及其水煎液中8种重金属元素Pb、Cd、Cr、Cu、As、Hg、Sb、Sn含量的方法。使用微波消解处理样品,研究并优化了微波消解条件,对电感耦合等离子体-质谱仪的各项技术参数进行了选择。方法表明,8种元素的检出限小于等于0.003μg/L,精密度在1.3%—3.0%,药材加标回收率在93.6%—100.2%,药材水煎液加标回收率在94.2%—103.5%,煎煮前后药材重金属溶出率0%—33.33%,表明中药煎煮过程重金属元素不易溶出。A method was established for the determination of 8 heavy metals such as Pb,Cd,Cr,Cu,As,Hg,Sb,Sn in five traditional Chinese medicines and their respective decoctions by inductively coupled plasma mass spectrometry（ICP-MS） with microwave digestion.The microwave digestion conditions and the parameters of ICP-MS were optimized.Detection limits of all elements were lower than or equal to 0.003μg/L,and precisions were between 1.3% and 3.0%.The recoveries for Chinese traditional medicines were between 93.6%—100.2%,and recoveries of decoctions were between 94.2%—103.5%.Before and after decocting,the extractive rates were less than 33.33%,which showed the heavy metal elements were difficult to decoct.

关 键 词：电感耦合等离子体-质谱法 微波消解 中药 水煎液 重金属 

分 类 号：O657.63[理学—分析化学]