顶空毛细管柱气相色谱法测定涉水管材中的氯乙烯单体  

Determination of vinyl chloride monomer in water supply pipes by headspace capillary gas chromatography

作　　者：余胜兵[1] 黄伟雄[1] 许瑛华[1] 戴光伟[1] 钟秀华[1] 

机构地区：[1]广东省疾病预防控制中心,广州510300

出　　处：《中国卫生检验杂志》2010年第7期1629-1630,共2页Chinese Journal of Health Laboratory Technology

基　　金：广东省医学科研基金(B2010027)

摘　　要：目的:建立涉水管材中的氯乙烯单体的毛细管柱气相色谱检测方法。方法:称取已粉碎的氯乙烯单体于顶空瓶中,用N,N-二甲基乙酰胺为溶剂顶空制备样品,经HP-Wax柱分离,用氢火焰离子化检测器检测,采用外标法定量。结果:本法在0.20～10.0μg范围内线性关系良好,相关系数为0.9996,检出限为0.047μg(S/N=3)。相对标准偏差(RSD)小于6%,加标回收率为90%～97%。结论:本法具有操作简单、快速、灵敏度高、准确度和精密度好等优点,适合涉水管材中残留氯乙烯单体的检测。Objective：To establish a method for determination of residual vinyl chloride monomer in water supply pipes by headspace capillary gas chromatography.Methods： Smashed water supply pipes were dissolved by N,N-dimethylacetamide in headspace vials and injected by headspace sampler into the gas chromatograpy with flame ionization detector（FID）.The vinyl chloride was then separated by HP-Wax capillary column and quantified by external standard method.Results： The range of linear range was 0.20～10 μg（R=0.9996）.The limit detection was 0.047 μg（S/N）.The relative standard deviation（RSD） was less than 6%（n=6） and the recoveries of the spiked samples for low,middle and high concentrations were 90%～97%.Conclusion： This method is simple,convenient,sensitive,accurate and is suitable to the determination of vinyl chloride monomer in water supply pipes.

关 键 词：毛细管色谱柱 顶空 氯乙烯 

分 类 号：O657.8[理学—分析化学]