摘要
目的：建立电感耦合等离子体质谱（ICP-MS）法测定白英提取物中的铅（Pb）、镉（Cd）、砷（As）、汞（Hg）、铜（Cu）。方法：样品经过微波消解处理,分别以锗（Ge）、铟（In）、铋（Bi）作为内标,采用ICP-MS法同时测定5种元素的残留量。结果：所测元素标准曲线的相关系数均r〉0.999,平均回收率为94%~108%,相对标准偏差（RSD）为3.5%~8.9%。结论：该方法准确、快速,简便,可用于白英提取物中重金属及有害元素的残留量测定。
Objective：To establish a determination method of Pb, Cd, As, Hg, Cu in Solanum lyratum Thunb.extract by ICP-MS.Methods：The sample was degisted by microwave digestion, using ICP-MS method to determined 5 kinds of element at the same time with using Ge,In,Bi as the internal standard.Results：The standard curve correlation coefficients of determined elements were all greater than 0.999,the average rates of recovery were from 94%to 108%, and the relative standard deviation （ RSD） was from 3.5%to 8.9%.Conclusion：This method is accurate,fast,simple,and it can be used in determination of the residual amount of the heavy metal analysis and harmful elements in solanum lyratum thunb extract.
出处
《中国药物评价》
2015年第2期87-89,92,共4页
Chinese Journal of Drug Evaluation
关键词
电感耦合等离子体质谱
白英
重金属
微波消解
Inductively coupled plasma mass spectrometry
Solanum lyratum Thunb
Heavy metal
Microwave digestion
