摘要
目的:对电感耦合等离子体质谱法(ICP-MS)测定马钱子中铅(Pb)、镉(Cd)、砷(As)、汞(Hg)含量的不确定度进行评定。方法:用电感耦合等离子体质谱法测定马钱子Pb、Cd、As、Hg的含量,通过对测定方法流程进行分析,确定不确定度来源,并计算合成不确定度。结果:用ICP-MS法测定Pb、Cd、As、Hg的扩展不确定度分别为As 0.17 mg·kg-1、Cd 0.039 mg·kg-1、Hg 0.029 mg·kg-1、Pb 0.15 mg·kg-1。结论:该方法适用于ICP-MS法测定马钱子中Pb、Cd、As、Hg的不确定度评定,为重金属及有害元素分析过程的不确定度评定提供了重要参考。
Objective： To establish an uncertainty analysis method for the determination of Pb,Cd,As and Hg in Strychni Semen by ICP-MS. Methods： To determine the contents of Pb,Cd,As and Hg in Strychni Semen by ICP-MS.The determination process was analyzed to identify the source of uncertainty and the combined uncertainty was calculated. Results： The expanded uncertainties of the test by ICP-MS were 0.17 mg·kg-1 for As,0.039 mg·kg-1 for Cd,0.054 mg·kg-1 for Hg,and 0.15 mg·kg-1 for Pb. Conclusion： This method is applicable for the uncertainty evaluation of Pb,Cd,As and Hg determination.It provides an important reference for the uncertainty evaluation for the heavy metal determination in Strychni Semen.
出处
《药物分析杂志》
CAS
CSCD
北大核心
2013年第12期2176-2182,共7页
Chinese Journal of Pharmaceutical Analysis
