吹扫捕集-气相色谱/质谱法测定水中25种挥发性有机物研究

Determination of 25 Kinds of Volatile Organic Compounds in Water by Purge and Trap in Combination with GC/MS

建立了吹扫捕集与气相色谱/质谱联用测定水中25种挥发性有机物的分析方法。该方法的加标回收率在90%～119%之间,响应因子(RF)的相对标准偏差均小于20%,检出限在0.04μg/L～0.22μg/L之间。该方法具有简单、快速、准确、灵敏,无其他有机物的污染等优点,适用于地表水、地下水和饮用水中挥发性有机物的测定,结果令人满意。

This study established a method to determine 25 kinds of volatile organic compounds in water by purge and trap in combination with gas chromatography and mass spectrometry （C,C/MS）. The recovery ratios of the method were 90% - 119%. RF RSD was less than 20%. Using this method, the range of the lowest detection limits for 25 kinds of VOCs was 0. 04 μg/L 0. 22 μg/L. The method is simple, quick, sensitive and accurate, bringing no contamination. It is applicable for the determina- tion of VOCs in environmental water, underground water and drinking water samples.