气相色谱法同时测定地表水中1,1-二氯乙烯和1,2-二氯乙烯

Simultaneous determination of 1,1-dichloroethylene and 1,2-two vinyl chloride in surface water by using gas chromatography

建立了吹扫捕集-气相色谱法同时测地表水中1,1-二氯乙烯和1,2-二氯乙烯的方法,并对实验条件进行了优化。实验结果表明,该方法操作简便,灵敏度高,检出限低,实际水样的加标回收率在在94.7%~104.8%间,标准样品7次测定值的相对标准偏差均小于2%,可满足地表水环境中1,1-二氯乙烯和1,2-二氯乙烯的监测要求。

Purge and trap - gas chromatography to measure surface water at the same time for 1,1 - dichloroethylene and 1,2 - two vinyl chloride is estabished, and the experimental condition is optimized. Experimental results show that the method is simple, high sensitivity, low detection limit, the actual water samples of standard addition between 94. 7% - 104. 8% in recovery, and in standard sample seven measurements, the relative standard deviation is less than 2%, which can meet the monitoring requirements of, 1,1 -dichloroethylene and 1,2 -two vinyl chloride in surface water.