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Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
Published on: July 25, 2014
[Direct analysis of trace elements in tobacco using electrothermal vaporization ICP-AES]
1Key Laboratory, Wuhan Polytechnic University, Wuhan 430023, China.
Abstract:
A method for direct analysis of trace elements (Cu, Fe, Al, Cr and Mn) in tobacco by slurry sampling electrothermal vaporization (ETV) ICP-AES using polytetrafluoroethylene (PTFE) emulsion as a chemical modifier was described. The main factors affecting the analytical signals were studied. The detection limits of this method for the determination of the interesting elements were in the range of 3.8 ng.mL-1 (Cu) to 13 ng.mL-1 (Fe), and the relative standard deviations (RSD) varied from 2.5% (Cu) to 5.7% (Cr) with the recoveries of 91.0%-112%.
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