To establish a method of purge and trap with gas chromatograph for the determination of 1, 1-dichloroethylene and 1, 2-dichloroethylene in drinking water simultaneously. The purge and trap, and gas chromatograph conditions were optimized. The method enjoyed a wel linear range and good precision, the detection limit was 0.0006-0.003mg/L. The relative standard deviation (RSD) was 2.54%-4.58%, and the average recoveries were 86.8%-105.4%. The results showed is suitable for determining 1, 1-dichloroethylene and 1, 2-dichloroethylene in drinking water.%建立了吹扫捕集-气相色谱技术快速测定生活饮用水中微量1,1-二氯乙烯和1,2-二氯乙烯的方法。对捕集阱填充材料，吹扫时间、脱附时间、烘焙条件等吹扫捕集方法的条件及气相色谱条件进行优化。在优化条件下，对标准物质及水样进行测定，结果表明该法线性良好，检出限0.0006-0.003mg/L，相对标准偏差为2.54%-4.58%(n=6)，回收率为86.8%-105.4%，线性相关系数>0.9996。因此，本方适合于生活饮用水中1,1-二氯乙烯和1,2-二氯乙烯的同时分析。
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