ICP-MS法同时测定烟草中的铬、镍、砷、硒、镉、汞、铅

Simultaneous Determination of Cr,Ni,As,Se,Cd,Hg and Pb in Tobacco with ICP-MS

采用微波消解和电感耦合等离子体质谱法同时测定了85个烟叶样品中的铬（Cr）、镍（Ni）、砷（As）、硒（Se）、镉（Cd）、汞（Hg）和铅（Pb）含量。结果表明：①这些重金属元素的回收率96．34％～106．7％，检出限7．974—147．8ng／L，相对标准偏差1．41％～9．78％；②烟叶中的Cr、Ni、As、Se、Cd、Hg和Pb含量随品种和产地的不同差别较大，同一品种不同部位烟叶的差别相对较小。

The Cr, Ni, As, Se, Cd, Hg and Pb in 85 tobacco samples from five major production areas of China were simultaneously determined by inductively coupled plasma mass spectrometry （ICP-MS） with microwave digestion. The results showed that： 1 ） the recoveries of these heavy elements were in the range of 96.34% to 106.7% with the RSD of 1.41 % - 9.78% and the limits of detection were from 7.974 - 147.8ng/L; 2） the contents of these elements between different cultivars and production areas differed significantly, while those between different stalk positions did not for the same cultivar.