自动顶空-气相色谱法测定饮用水中多种挥发性卤代烃

[目的]建立顶空-毛细管气相色谱快速分析饮用水中多种挥发性卤代烃的方法。[方法]对平衡温度、平衡时间、气液相比等顶空条件及色谱条件进行了优化，并对实际水样进行了测定。[结果]9种挥发性卤代烃平均加标回收率在89．5％～117．2％之间，相对标准偏差为1．7％～6．3％，最低检出浓度为0．01～2．80μg／L。[结论]所建立的方法操作简单、快捷，具有较好的灵敏度和准确度，适用于生活饮用水中多种挥发性卤代烃的分析。

Determination of volatile halogenated hydrocarbons in drinking water by automatic headspace capillary gas chromatography

[Objective]To establish a method for rapid determination of multi-mixture volatile halogenated hydrocarbons in drinking water with headspace capillary gas chromatography. [Methods]The experimental conditions of headspace,such as the balance temperature, balance time,gas liquid phase ratio and the analytical conditions of GC were optimized. Volatile halogenated hydrocarbons in drinking water were determined by headspace gas chromatography. [Results]The recovery of 9 kinds volatile halogenated hydrocarbons were between of 89.5 % - 117. 2 %. the relative standard deviation（RSD） was 1.7 % - 6.3 %. The lowest determination limit was 0. 01 - 2. 80 μg/L. [Conclusion] The method is simple, rapid, sensitive and accurate. Therefore,it is suitable for analysis of multi-mixture volatile halogenated hydrocarbons in drinking water.