title: [Direct analysis of trace elements in tobacco using electrothermal vaporization ICP-AES].
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%.
authors.affiliation: Key Laboratory, Wuhan Polytechnic University, Wuhan 430023, China.
authors.forename: Shi-zhong
authors.initials: SZ
authors.lastname: Chen
mesh_terms: D002857:Chromium / Q000032:analysis*; D003300:Copper / Q000032:analysis*; D004563:Electrochemistry; D004655:Emulsions; D007501:Iron / Q000032:analysis; D008345:Manganese / Q000032:analysis; D011138:Polytetrafluoroethylene; D013054:Spectrophotometry, Atomic / Q000379:methods; D014026:Nicotiana / Q000737:chemistry*; D014131:Trace Elements / Q000032:analysis*; D014835:Volatilization
chemical_list: D004655:Emulsions; D014131:Trace Elements; D002857:Chromium; D008345:Manganese; D003300:Copper; D011138:Polytetrafluoroethylene; D007501:Iron