Determination of 27 Elements in Tobacco by ICP-MS Using Microwave Digestion for Sample Preparation
HU Qing-yuan1,2,LI Li3,SHI Jie4,CHEN Zai-gen2,WANG Fang2, WANG An1
1.Anhui Institute of Optics and Mechanics, Chinese Academy of Sciences, Hefei 230031, China 2.China National Tobacco Quality Supervision & Test Center, Zhengzhou 450001, China 3.Technical Research and Development Center, China Tobacco Chuanyu Industrial Corporation, Chengdu 610066，China 4.Department of Chemistry, Zhengzhou University, Zhengzhou 450052, China
Abstract：While the organic and biologically active components in tobacco smoke are well characterized, it is also important to know which inorganic elements are contained in tobacco. In the present paper, the determination of Be, Na, Mg, K, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Mo, Ag, Cd, Sn, Cs, Ba, Hg, Tl, Pb, Th and U in tobacco leaves was studied by inductively coupled plasma mass spectrometry. Samples were digested in a mixture of nitric acid and hydrogen peroxide by closed-vessel microwave digestion. The instrumental operating conditions were optimized for the measurement of above 17 elements. Ge, In and Bi were used as internal standard elements to compensate matrix effect and signal drift. The precision of measurement ranges from 1.28% to 9.18% in terms of relative standard deviation. The recoveries for spiking tobacco samples and the limits of detection are in the range of 93.64%-108.9% and 0.356 3 ng·L-1-1.725 μg·L-1,respectively. The results of experiment show that the method can meet the requirements of trace analysis.
Key words：Inductively coupled plasma mass spectrometry (ICP-MS);Tobacco;Microwave digestion
胡清源1,2,李力3,石杰4,陈再根2,王芳2,王安1 . 微波消解-电感耦合等离子体质谱法同时测定烟草中27种元素[J]. 光谱学与光谱分析, 2007, 27(06): 1210-1213.
HU Qing-yuan1,2,LI Li3,SHI Jie4,CHEN Zai-gen2,WANG Fang2, WANG An1 . Determination of 27 Elements in Tobacco by ICP-MS Using Microwave Digestion for Sample Preparation. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(06): 1210-1213.
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