分散液相微萃取-气相色谱-质谱法快速检测水体中17种芳香胺  

Rapid determination of 17 aromatic amines in water by dispersed liquid microextraction coupled with gas chromatography-mass spectrometry

作　　者：杨超 尹明明 戴维 徐颖 YANG Chao;YIN Mingming;DAI Wei;XU Ying(Nanjing Environmental Monitoring Center,Nanjing 210013,China)

机构地区：[1]江苏省南京环境监测中心,南京210013

出　　处：《化学分析计量》2023年第6期23-29,共7页Chemical Analysis And Meterage

基　　金：江苏省南京环境监测中心环保科研项目(NO.202204)。

摘　　要：建立分散液相微萃取结合气相色谱-质谱快速检测水体中17种芳香胺的分析方法。以乙腈作为分散剂,三氯甲烷作为萃取剂,将萃取剂和分散剂快速注入水样形成乳浊液体系,涡旋辅助萃取,经高速离心后,取下层有机相分析。采用SIM模式进行检测,根据保留时间定性,内标法定量。17种芳香胺的质量浓度在5.0~200μg/L范围内与对应色谱峰面积和内标峰面积的比值线性相关,相关系数均大于0.997,方法检出限为0.025~0.049μg/L。实际水样平均加标回收率为77.2%~114%,测定结果的相对标准偏差为2.6%~16.5%(n=6)。该方法可应用于水体中芳香胺的高效定量分析。A method for the rapid determination of 17 aromatic amines in water by dispersed liquid microextraction combined with gas chromatography-mass spectrometry(GC-MS)was established.The acetonitrile was used as dispersant and trichloromethane was used as extractant.The extractant and dispersant were quickly injected into the water sample to form emulsion system,and the extraction was assisted by vortex.The organic phase was taken out for analysis when the sample after high-speed centrifugation.The sample was detected with SIM mode,which was qualitative according to retention time and quantified by internal standard method.The mass concentration of 17 aromatic amines was linearly correlated with the ratio of the corresponding chromatographic peak area and the internal standard peak area in the range of 5.0-200μg/L,the corelation coefficients were all more than 0.997,and the detection limits were 0.025-0.049μg/L.The average spiked recoveries of the water samples were 77.2%-114%,and the relative standard deviations of the determination results were 2.6%-16.5%(n=6).This method can be applied to the efficient quantitative analysis of aromatic amines in water.

关 键 词：芳香胺 分散液相微萃取 同位素内标 气相色谱-串联质谱法 

分 类 号：O657.7[理学—分析化学]