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.
出处
《中国卫生检验杂志》
CAS
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)
关键词
毛细管色谱柱
顶空
氯乙烯
Headspace
Capillary gas chromatography
Vinyl chloride