[Direct analysis of trace elements in tobacco using electrothermal vaporization ICP-AES].
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%.
Chen
Shi-zhong
SZ
Key Laboratory, Wuhan Polytechnic University, Wuhan 430023, China.
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
D004655:Emulsions; D014131:Trace Elements; D002857:Chromium; D008345:Manganese; D003300:Copper; D011138:Polytetrafluoroethylene; D007501:Iron