摘要
目的 建立生活饮用水中58种挥发性有机物(VOCs)快速测定的方法,以满足饮用水污染事件中VOCs测定需求。方法 取5 mL水样经吹扫捕集装置处理,VOCs被富集并进样至气相色谱-质谱联用仪进行定性、定量分析。结果 在0~10.0μg/L线性范围内,各组分的标准曲线相关系数均大于或等于0.99,用0.5、2.0、10.0μg/L 3种质量浓度水平加标,回收率为81.3%~113.5%,6次测定的相对标准偏差为1.9%~11.1%,检出限为0.001~0.045μg/L。在30个实际水样中,除1,1-二氯乙烷和氯溴甲烷未检出外,其余有机物均有痕量快速检出,且94.7%的组分质量浓度在2μg/L以下。结论 该方法前处理简单,测定灵敏、准确且迅速,能满足饮用水污染事件中VOCs的定性和定量测定需求。
Objective To establish a method for rapid determination of 58 volatile organic compounds(VOCs) in drinking water, so as to meet the needs of VOCs determination in drinking water pollution events.Methods 5 mL water sample was treated by the purge and trap device, VOCs were enriched and injected into gas chromatography-mass spectrometry for qualitative and quantitative analysis.Results The correlation coefficients of standard curve of all components were greater than or equal to 0.99 in the linear range of 0-10.0 μg/L.The recovery rates of three mass concentration levels of 0.5,2.0,10.0 μg/L were in the range of 81.3%-113.5%,the relative standard deviation(RSD) was 1.9%-11.1%,and the detection limits were 0.001-0.045 μg/L.In 30 actual water samples, except for 1,1-dichloroethane and chlorobromomethane, trace were detected rapidly in the remaining organic compounds and 94.7% of the components were less than 2 μg/L.Conclusion The method has the advantages of simple pretreatment, sensitive, accurate and rapid determination, and can meet the qualitative and quantitative determination needs of VOCs in drinking water pollution events.
作者
周亮
朱韩武
钟艳琴
贺春霞
雷飏
ZHOU Liang;ZHU Hanwu;ZHONG Yanqin;HE Chunxia;LEI Yang(Chenzhou Municipal Center for Disease Control and Prevention,Chenzhou,Hunan 423001,China)
出处
《现代医药卫生》
2023年第3期368-372,377,共6页
Journal of Modern Medicine & Health
基金
湖南省卫健委科研计划项目(20201731)
湖南省郴州市科技局重点科技计划项目(ZDYF2020195)
关键词
气相色谱质谱法
挥发性有机物
生活饮用水
快速检测
水质检测
Gas chromatography-mass spectrometry
Volatile organic compounds
Drinking water
Rapid detection
Water quality detection
