大气中几种痕量烃类化合物连续自动检测

Automatic and Continuous Determination of Aromatic Compounds in the Ambient Air Using Capillary Column Gas Chromatograph.

本文报道在环境大气中有机污染物的全自动新分析方法。本方法采用由计算机控制的GC、大气样品浓缩管、电磁六通阀、真空泵及微处理机组成的全自动连续分析装置、完成定性定量分析。连续三周在呼和浩特市以每小时为一分析周期,用此装置检测了环境大气中正己烷、苯、甲苯、O-甲苯、M-甲苯、P-甲苯等16种有机污染物,获得较满意的结果。

An automatic and continuous analysing device of aro- matic compounds in the ambient air has been developed. This device is composed of GO-FID, a six-way valve and a vacuum pump, which is controlled by a microprocessor in GC. Air samples were analyzed qualitatively and quantitatively by the device for three weeks, and 16 kinds of aromatic compounds such as benzene, methylbenzene etc and the changing trends of their concentrations were observed in Huhehot.