An improved gas chromatography for rapid measurement of CO_2, CH_4 and N_2O

Article type: Research Article

Authors: WANG, Ying-hong^; | WANG, Yue-si | SUN, Yang^; | XU, Zhong-jun^; | LIU, Guang-ren

Affiliations: Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China | Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Note: [] Corresponding author. E-mail: wys@dq.cern.ac.cn

Abstract: Combining improved injector, gas line and valve-driving modules, a GC equipped with FID and ECD, could simultaneously measure CH_4, CO_2 and N_2O in an air sample within 4 min. Test results showed that the system has high sensitivity, resolution and precision; the linear response range of the system meets the requirement of in situ flux measurements. Thus, the system is suitable for monitoring fluxes of main greenhouse gases in terrestrial ecosystem since it is easy to use, efficacious, stable and reliable to collect data.

Keywords: GC, valve, emission of greenhouse gases, ecosystem

Journal: Journal of Environmental Sciences, vol. 18, no. 1, pp. 162-169, 2006