静态顶空-气相色谱质谱法测定烟用白乳胶中残余的乙酸乙烯酯

Determination of Residual Vinyl Acetate in Polyvinyl Acetate Emulsion Adhesives for Cigarette with Static Headspace-Gas Chromatography-Mass Spectrometry

建立了烟用白乳胶中残余乙酸乙烯酯的静态顶空-气相色谱-质谱（SHS—GC—MS）内标定量测定方法。样品经80℃下15min静态顶空后，以2-己酮为内标，采用HP—INNOWAX柱，GC—MS／选择离子监测（SIM）模式检测，内标法定量。结果表明：方法的检测限、加标回收率和相对标准偏差（RSD）分别为0．63mg／kg，104％～107％和2．5％～4．9％。该方法具有简单快速、准确灵敏等特点，适合于烟用白乳胶中残余乙酸乙烯酯的定量分析。

A method for determining the residual vinyl acetate in polyvinyl acetate emulsion adhesive for cigarette by static headspace-gas chromatography-mass spectrometry （SHS-GC/MS） with internal standard was developed. The adhesive sample was treated at 80℃ for 15 min with 2-hexanone as internal standard, the extract was separated by a HP-INNOWAX column, determined by MS and quantified by the internal standard under selected ion monitoring （SIM） mode. The results showed that the recoveries of the method ranged from 104% to 107% with the relative standard deviation （RSD） of 2.5 to 4.9% and the limit of detection of 0.63 mg/kg. The method is accurate, slmple, rapid, and suitable for the analysis of residual vinyl acetate in cigarette emulsion adhesives.