便携式GC-FID法测定固定污染源废气中的苯系物

为研究便携式GC-FID方法测定固定污染源废气中苯系物的适用性,选择3款不同设备(2款进口、1款国产)开展实验室分析及现场测试。研究测试苯系物的目标物具体包括苯、甲苯、乙苯、邻/间/对二甲苯、苯乙烯、1,3,5-三甲苯、1,2,4-三甲苯以及1,2,3-三甲苯。实验研究了各设备对苯系物的分析周期、检出限、精密度以及准确度。结果表明:便携式GC-FID方法测定固定污染源废气中的苯系物具备较好的适用性,能够满足固定源废气中苯系物管控及监测要求;国产设备性能指标均可以达到甚至超越进口设备的水平,建议相关部门制定相应的方法标准。

英文摘要:

To investigate the applicability of portable GC-FID method for the determination of benzene series in waste gas from fixed pollutant emissions, three sets (two imported and one domestic) of instruments were selected for laboratory and field experiments. The benzene series included:benzene,toluene,ethylbenzene,xylene(o; m; p),styrene,and trimethylbenzene(1,3, 5; 1,2,4; 1,2,3). The instrument analysis cycle,detection limit,precision,and accuracy were tested. The results showed that the portable GC-FID instruments for the determination of benzene series in waste gas from fixed pollutant emissions have good applicability,capable of meeting the control and monitoring requirements for benzene series compounds in domestic fixed source waste gas. The performance indicators of the domestic instruments can all meet or even exceed the performance standards of imported instruments. It was recommended that the country should establish corresponding method standards for project approval.

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