水中致癌芳香胺的固相萃取-气质分析方法研究  

Analytical Mehtod for Aromatic Amine in Water Using Solid-Phase Extraction and GC/MS

作　　者：叶伟红[1] 刘劲松[1] 潘荷芳[1] 

机构地区：[1]浙江省环境监测中心,浙江杭州310012

出　　处：《质谱学报》2011年第1期55-60,共6页Journal of Chinese Mass Spectrometry Society

基　　金：浙江省分析测试科技计划项目(2008F70057);浙江省科技厅重大科技专项社会发展重点项目(2006C13060)资助

摘　　要：采用固相萃取-气相色谱质谱法分析了水中24种致癌芳香胺的含量，结果表明，该方法的检出限低于0．36μg／L。固相萃取的优化条件为：选用Envi—chromp固相萃取小柱，水样pH8～10，二氯甲烷洗脱2次。绝大多数芳香胺的空白水样加标回收率在88．8％～111．8％之间，标准偏差为6．8％～9．9％。对浙江省13个饮用水源地的地表水进行检测，均未检出24种致癌芳香胺。降解实验表明，大多数芳香胺化合物在水中能稳定存在14d以上。Twenty-four aromatic amines were analyzed by gas chromatography-mass spectrometry （GC/MS）coupled the solid-phase extraction （SPE） technology. The result shows that the method is relialdil.ity, sensitivity and accuracy. The detection limitation is lower than 0.36 μg/L. The optimum SPE conditions was Envi-chromp colume and pH 8-10 water, eluted two times with CH2C12. The average recovery of most compounds in blank water is 88.8%-111.8%, and RSD is 6.8%-9.9%. Thirteen drink waters were detected using this method. The result is that all target compounds are under detection limit. It is indicated in degradation test, and most aromatic amine are stable in water for more than fourteen days.

关 键 词：固相萃取(SPE) 致癌芳香胺 气相色谱-质谱(GC/MS) 

分 类 号：O657.63[理学—分析化学]