研究了吹扫捕集-气相色谱法同时测定水中乙醛、丙烯醛和甲醛的方法并优化了实验条件.实验结果表明,该方法操作简便,灵敏高效,目标化合物的检出限分别为0.037、0.012、0.0006mg/L,相对标准偏差在3.9％ ～15.8％之间,实际水样的加标回收率在73.0％ ～118％之间,能很好满足《地表水环境质量标准》中相关项目的要求.%Determination of acetaldehyde, acrolein and formaldehyde in water by GC coupled with purge and trap was studied. After working parameters optimizing, experimental results show that the advantages of this method is simple, sensitive and high efficient. DL (detection limit) of the target compounds was 0.037, 0.012 and 0. 0006mg/L, respectively. RSD (Relative standard deviations) was ranged from 3.9% to 15.8% , and the recovery were 73.0% - 118%. This method could meet the monitoring requirement of target compounds in " Environment Quality Standard of Surface Water".
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