热脱附-气相色谱法分析环境空气及废气中的苯系物

Determination of benzene series in ambient air and exhaust gas samples by thermal desorption coupled with gas chromatography

建立了热脱附-气相色谱法分析环境空气及废气中的苯系物的方法,并对实际气样进行了测定。各目标物的线性回归R值均大于0.999,MDL为0.23-0.33μg/m3,RSD为3.2%-5.2%,回收率为96.3%-99.8%。

A method of thermal desorption coupled with gas chromatography for the determination of benzene series in ambient air and exhaust gas samples was developed. The linear correlation coefficients were over 0.999,the method detection limits were 0.23-0.33ìg/m^3,and the relative standard deviations were from 3.2% to 5.2%,and the recoveries were from96.3% to 99.8%.