吹扫捕集技术富集水中的苯系物可省去繁琐的溶剂萃取步骤,提高样品加标回收率。用吹扫捕集-气相色谱法测定水中7种苯系物,当水样进样体积为5mL时,方法检出限为0.5～2.1ug/L,用该方法对实际水样中的7种苯系物进行测定,回收率为95.0%～105.8%,测定结果的相对偏差均小于4%。 Purification and capture technology to enrich the water in the benzene series can eliminate tedious solvent extraction steps, increase the sample spike recovery. Determination of 7 kinds of benzene series in water by purge and trap - gas chromatography. When the injection volume of water sample is 5mL, the detection limit of this method is 0.5 ~ 2.1ug / L. Using this method, Benzene series were measured, the recovery was 95.0% ~ 105.8%, the relative deviation of the determination results were less than 4%.