吹扫捕集/GC-MS联用法分析地表水中挥发性有机物

摘要

A method was established using purge and trap-gas chromatography-mass spec-trometry (GC-MS) for the determination of volatile organic compounds ( VOCs) in surface water. The related coefficient of calibration curve are between 0. 993 - 0. 9992 , The recoveries are between 85% -102%. This method is accurate and simple, has a good precision, can meet surface water testing requirement. .%建立了吹扫捕集-气质谱联用仪同时测定地表水中22种挥发性有机物的方法.NIST标准谱库检索定性,外标法定量.各组分得到了较好的分离,在0.5～l00μg/L浓度范围内线性关系良好,标准曲线线性相关系数在0.993～0.9992之间,回收率在85％～102％之间.方法准确,精密度良好,满足地表水质分析检测的要求.