摘要
采用全自动吹扫捕集进样技术,通过对吹扫时间、色谱柱、检测器和定量方法等参数进行优化,对饮用水中痕量环氧氯丙烷进行富集、解析,并经DB-624毛细管色谱柱分离,采用选择离子模式(SIM)进行检测,提取特征离子通过内标法进行定量分析。结果表明,饮用水中环氧氯丙烷在0.02~2.00μg/L线性好,相关系数为0.9996,检出限为0.01μg/L,添加水平分别为0.05、0.40、1.00μg/L时,测得环氧氯丙烷的加标回收率在92.33%~103.81%,重复测定6次,RSD为2.17%~6.59%。该方法自动化程度高、灵敏度高、定性定量准确、重现性好,适合饮用水中痕量环氧氯丙烷的测定。
Methods the automatic purge and capture technology was used.By optimizing the blowing time,chromatographic column,detector and quantitative method,the trace amount of epichlorohydrin in drinking water was enriched and analyzed.The selective ion mode(SIM)was used to detect the trace epichlorohydrin in the drinking water.The extracted characteristic ions were quantitatively analyzed by internal standard method.Results the epichlorohydrin in drinking water was linear in the range of 0.02~2.00μg/L,and the linear correlation coefficient was 0.9996.The detection limit of this method was 0.01μg/L.When the addition level was 0.05,0.40,1.00μg/L,the recovery rate of epichlorohydrin was 92.33%to 103.81%,and 6 times,RSD was repeated.It is 2.17%to 6.59%.The method is highly automatic,sensitive,accurate and reproducible for the determination of trace epichlorohydrin in drinking water.
作者
赵丽
段毅宏
张瑞雨
李彦生
刘建辉
ZHAO Li;DUAN Yi-hong;ZHANG Rui-yu;LI Yan-sheng;LIU Jian-hui(Kunming Center for Disease Control and Prevention,Kunming 650228,China;Yunnan Provincial Center for Disease Control and Prevention,Kunming 650022,China)
出处
《湖北农业科学》
2019年第21期167-169,172,共4页
Hubei Agricultural Sciences
基金
昆明市卫生科技人才培养项目[2017-SW(后备)-69]
关键词
吹扫捕集
气相色谱串联质谱
饮用水
环氧氯丙烷
purge and trap
gas chromatography-mass spectrometry
drinking water
epichlorohydrin
