基于膜式固相萃取的水体全氟化合物检测方法研究  

Study on Detection Method of PFASs in Water Based on Membrane Solid Phase Extrction

作　　者：姚志建 顾凯丽 李涛 耿旭 周庆[2] 李爱民[2] 张韦华 王卫 焦伟 YAO Zhi-jian;GU Kai-li;LI Tao;GENG Xu;ZHOU Qing;LI Ai-min;ZHANG Wei-hua;WANG Wei;JIAO Wei(Jiangsu Guochuang Environmental Protection Technology Co.,Ltd.,Nanjing 211106,China;School of Environment,Nanjing University,Nanjing 211046,China;Suqian Ecological Environment Monitoring and Monitoring Service Center,Suqian 223800,China)

机构地区：[1]江苏国创环保科技有限公司,江苏南京211106 [2]南京大学环境学院,江苏南京210023 [3]宿迁市生态环境监测监控服务中心,江苏宿迁223800

出　　处：《环境科技》2024年第2期40-45,共6页Environmental Science and Technology

基　　金：国家自然科学基金:饮用水源水中溶解性有机质协同去除微污染有机物的净化工艺调控原理(52070093).

摘　　要：基于膜式固相萃取法和液相色谱-串联质谱法建立了一种高灵敏、快速分析环境水样中痕量全氟化合物(PFASs)的方法。采用最优条件的模式固相萃取进行样品前处理,以乙酸铵水溶液及乙腈为流动相进行梯度洗脱,经Accucore aQ C18色谱柱分离,采用电喷雾离子源、负离子采集模式和质谱多反应监测模式分析,实现了环境水样中17种全氟化合物的快速分析,17种全氟化合物检出限(S/N=3)为0.2~0.3 ng/L。将方法应用于实际环境水样中全氟化合物的分析,加标回收率为87%~95%。研究可为快速、有效地检测环境水样中痕量全氟化合物提供新方法的选择。A highly sen sitive and rapid method for the determination of trace perfluoroalkyl substances(PFASs)in environmental water samples was developed based on membrane solid phase extraction and liquid chromatograph-tandem mass spectrometry in this study.Ammonium acetate aqueous solution and acetonitrile were separated by gradient elution on Accucore aQ C18 column,and analyzed by electrospray ion source,negative ion scanning mode and mass spectrometry multireaction monitoring mode.Rapid qualitative and quantitative analysis of 17 PFASs in environmental water samples were realized,and the detection limits(S/N=3)were 0.2~0.3 ng/L.The method was applied to the analysis of PFASs in actual environmental water samples,and the recoveries of perfluorinated compounds were 87%~95%with satisfactory results.This method provides a new choice for the rapid and effective detection of trace PFASs in environmental water samples.

关 键 词：膜式固相萃取 液相色谱-串联质谱 全氟化合物 环境水样 

分 类 号：X8[环境科学与工程—环境工程]