Determination of Pyridine,Quinoline and Styrene in Mainstream Smoke Trapped by Methanol Solution Direct-Ionic Liquid Gathering Coupled Gas Chromatography-Mass Spectrometry
A method was developed for the collection and determination of pyridine,quinoline and styrene in mainstream tobacco smoke.The mainstream smoke was direct trapped with 50% methanol solution from smoking machine,then extracted and concentrated by 1-butyl-3-methylimidazolium hexafluorophosphate(PF6),and analyzed with GC/MS.The established method was stable and precise and the results were accurate and credible.Good linear relations were observed with a correlation coefficient over 0.9995.The detection limits were 24.9,9.34 and 4.05 ng/cig for pyridine,styrene and quinoline respectively,the relative standard deviations were less than 6.0 %,and the recoveries were found in the range from 90.6% to 107.4%.