生活饮用水中环氧氯丙烷的全自动固相萃取-气相色谱-质谱联用测定法
Determination of epichlorohydrin in drinking water by automated solid phase extraction-gas chromatography-mass spectrometry
戴胡票 1胡宁恩 1李小东 1郑三燕1
作者信息
- 1. 温州市疾病预防控制中心(温州市卫生监督所)理化检验所,浙江温州 325000
- 折叠
摘要
建立生活饮用水中环氧氯丙烷的全自动固相萃取-气相色谱-质谱联用分析方法.方法 水样经椰子壳活性炭小柱-全自动固相萃取系统提取富集,二氯甲烷进行洗脱,氮吹浓缩后,经气相色谱-质谱联用仪检测.结果 在10～1 000μg/L范围内,所得回归方程呈良好的线性关系,r=0.999 5.方法的检出限为0.006µg/L,定量下限为0.02 μg/L;平均回收率为83.9％～90.2％,RSD为3.2％～6.1％.结论 该方法自动化程度高、稳定且灵敏度高,对于生活饮用水中环氧氯丙烷的监测具有实际应用价值.
Abstract
Objective To establish a method for the determination of trace epichlorohydrin in drinking water by automatic solid phase extraction with gas chromatography and mass spectrometry.Methods The drinking water samples were extracted and concentrated by coconut shell activated carbon column-automatic solid phase extraction system,eluted by dichloromethane.After nitrogen blowing and concentration,epichlorohydrin was determined by GC-MS.Results The regression equation for epichlorohydrin showed a good linear relationship in the range of 10-1 000 μg/L,r=0.999 5.The limit of detection was 0.006μg/L and the limit of quantitation was 0.02 μg/L.The average recoveries were 83.9％-90.2％and RSDs were 3.2％-6.1％.Conclusion The method is highly automated,stable and sensitive,and is applicable to the monitoring of epichlorohydrin in drinking water.
关键词
环氧氯丙烷/全自动固相萃取/气相色谱-质谱/生活饮用水Key words
Epichlorohydrin/Automatic solid phase extraction/Gas chromatography-mass spectrometry/Drinking water引用本文复制引用
出版年
2024
NETL
NSTL
万方数据