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本文建立了吹扫捕集-气相色谱质谱法测定水中三氯甲烷、四氯化碳等6种挥发性卤代烃的方法。标准曲线的相关系数在0.9996~0.9999之间,相对标准偏差在1.4%~2.2%之间,回收率在101%~105%之间,方法的检出限在0.091~0.295μg/L之间。方法具有很好的线性,灵敏高效,可用于生活饮用水、水源地表水和地下水中6种挥发性卤代烃的测定。
In this paper, a method for the determination of six volatile halocarbons, such as chloroform and carbon tetrachloride, by purge and trap-gas chromatography-mass spectrometry was established. The correlation coefficient of the standard curve was between 0.9996 and 0.9999, the relative standard deviation was between 1.4% and 2.2%, the recovery was between 101% and 105%, and the detection limit of the method was between 0.091 and 0.295μg / L. The method has good linearity, high sensitivity and high efficiency and can be used for the determination of 6 kinds of volatile halogenated hydrocarbons in domestic drinking water, surface water and groundwater.