吹扫捕集-气相色谱-质谱法同时测定水中多种挥发性有机物的试验研究  

Experimental Study on Simultaneous Determination of Multiple Volatile Organic Compounds in Water by Purge and Trap-Gas Chromatography-Mass Spectrometry

作　　者：雷琼[1] 赵海玲[1] 何娟 LEI Qiong;ZHAO Hailing;HE Juan(Ganzhou Center for Disease Control and Prevention,Ganzhou 341000,China)

机构地区：[1]赣州市疾病预防控制中心,江西赣州341000

出　　处：《中国资源综合利用》2024年第11期48-53,共6页China Resources Comprehensive Utilization

基　　金：江西省卫生健康委科技计划(指导性计划)项目“吹扫捕集-气相色谱-质谱法同时测定水中多种挥发性有机物”(202140711)。

摘　　要：吹扫捕集-气相色谱-质谱法是一种成熟的水质检测技术,可用于测定生活饮用水中的多种挥发性有机物。根据《生活饮用水卫生标准》(GB 5749—2022),影响生活饮用水水质的挥发性有机物主要有34种。试验采用吹扫捕集-气相色谱-质谱法测定5种水样(饮用水、地表水、地下水、海水和工业废水)的34种挥发性有机物含量,验证该方法对挥发性有机物的实际测定效果。结果显示,34种挥发性有机物的检出限保持在0.4~2.9 μg/L,相对标准偏差保持在1.6%~9.4%,加标回收率保持在83.9%~114.0%。经验证,该方法表现出良好的精密度和准确度,操作简单,能够满足多种应用需求。未来,要加强生活饮用水水质检测技术的应用和革新,提升水质检测效果,保障居民生活饮用水安全。Purge and trap-gas chromatography-mass spectrometry is a mature water quality detection technology that can be used to determine various volatile organic compounds in drinking water.According to the Sanitary Standards for Drinking Water(GB 5749—2022),there are mainly 34 volatile organic compounds that affect the quality of drinking water.The experiment uses purge and trap-gas chromatography-mass spectrometry to determine the content of 34 volatile organic compounds in 5 water samples(drinking water,surface water,groundwater,seawater and industrial wastewater),verifying the actual determination effect of this method on volatile organic compounds.The results show that the detection limits of 34 volatile organic compounds remain 0.4~2.9μg/L,the relative standard deviation remains 1.6%~9.4%,and the spiked recovery rate remains 83.9%~114.0%.After verification,this method exhibits good precision and accuracy,simple operation,and can meet various application requirements.In the future,it is necessary to strengthen the application and innovation of water quality testing technology for drinking water,improve the effectiveness of water quality testing,and ensure the safety of residents’drinking water.

关 键 词：生活饮用水 吹扫捕集-气相色谱-质谱法 挥发性有机物 测定 方法检出限 相对标准偏差 加标回收率 

分 类 号：X832[环境科学与工程—环境工程] O657.63[理学—分析化学]