吹扫捕集和气相色谱(PT-GC)联用测定水中N-亚硝基胺

摘要

A gas chromatography method with purge and trap pretreatment was established for the determination of three volatile N-Nitrosamines (N-nitrosodiethylamine, N-nitrosodi-n-propylanime and N-nitrosodi-n-butylamine) in rubber. The correlation coefficients of the standard curves are 0.990-0.995, the intra-day RSD are less than 8%, and the average recoveries range from 90.0 % to 102.1 % with detection limits of 5.3, 2.7, 1.5 μg/L for the three compounds.%该文建立涉水橡胶材料在浸泡试验过程中析出的三种N-亚硝胺类物质(N-亚硝基二乙胺、N-亚硝基二丙胺和N-亚硝基二丁胺)的吹扫捕集-气相色谱联用检测方法.三种化合物标准曲线的相关系数在0.990～0.995之间,日内相对标准偏差(RSD)小于8％,空白加标回收率在90.0 ％～102.1％之间,3种物质的检出限分别是5.3,2.7,1.5μg/L.