用电感耦合等离子体质谱法测定中草药中的重金属元素  

Determination of Heavy Metal Elements in Chinese Herb by Inductively Coupled Plasma-Mass Spectrometry

作　　者：缪恩铭 张艳红[1] 王森[1] 施红林[1] 陈章玉[1] 杨光宇[1] 

机构地区：[1]云南烟草科学研究院化学室,云南昆明650106

出　　处：《分析测试学报》2007年第z1期184-186,共3页Journal of Instrumental Analysis

摘　　要：In this paper,the determination of six heavy metal ions (arsenic,lead,cadmium,chromium,mercury and nickel) in the Chinese Herb by inductively coupled plasma-mass spectrometry (ICP-MS) was studied.The samples were digested by nitric acid and hydrogen peroxide in a microwave oven.The Sc,Y,In,Bi were added as internal standards to eliminate the matrix interferences.The results show that most of the relative standard deviations of these trace elements were below 3.5%,the standard recoveries of these elements were in the range of 91%-107%,and the detection limits were in the range of 0.001-0.006 μg·L-1. This method is accurate,rapid,convenience,and can be applied to the determination of arsenic,lead,cadmium,chromium,mercury and nickel in Chinese Herb with good results.In this paper,the determination of six heavy metal ions (arsenic,lead,cadmium,chromium,mercury and nickel) in the Chinese Herb by inductively coupled plasma-mass spectrometry (ICP-MS) was studied.The samples were digested by nitric acid and hydrogen peroxide in a microwave oven.The Sc,Y,In,Bi were added as internal standards to eliminate the matrix interferences.The results show that most of the relative standard deviations of these trace elements were below 3.5%,the standard recoveries of these elements were in the range of 91%-107%,and the detection limits were in the range of 0.001-0.006 μg·L-1. This method is accurate,rapid,convenience,and can be applied to the determination of arsenic,lead,cadmium,chromium,mercury and nickel in Chinese Herb with good results.

关 键 词：Chinese Herb Heavy metal element Inductively coupled plasma-mass spectrometry 

分 类 号：O657-55[理学—分析化学]