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
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摘要: 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15 min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。Abstract: 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, simple, rapid, and suitable for the analysis of residual vinyl acetate in cigarette emulsion adhesives.
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