Preprints
https://doi.org/10.5194/egusphere-2022-783
https://doi.org/10.5194/egusphere-2022-783
 
29 Sep 2022
29 Sep 2022
Status: this preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).

A novel analytical method to detect Ozone depleting substances and Fluorine-containing greenhouse gases in the atmosphere

Shan Danying, Cao Guan, Du Zhenyu, Zhang Xiulan, Tang Ka, Zhang Ting, and Chen Chunrong Shan Danying et al.
  • National Research Center for Environmental Analysis and Measurement (CNEAC), Beijing 100029, China

Abstract. Fluorine-containing greenhouse gases (F-GHGs) and ozone layer substances (ODS) are being monitored without a global commercial monitoring system. In this study, the existing commercial volatile organic compounds (VOCs) monitoring system is modified in hardware and optimized in methodology to provide high-precision monitoring of 33 types of ODS and F-GHGs in the atmosphere. Moreover, the system eliminates the issue of excessive costs and lengthy development cycles associated with special monitoring equipment. Pre-concentration can enhance the enrichment of low boiling point and low concentration components by increasing the injection volume, improving water removal efficiency, and improving adsorption capacity. It is significant to be noted that InertCap 624MS is a one-dimensional column, while GASPRO is a two-dimensional column. It is possible to separate 33 target compounds completely and stably by Heart-cut and TwinLine using dual-column separation and single-detector detection mode. Experimental findings indicate that this monitoring technology has an accuracy of 0.22~3.70 %. To accurately observe the changing trend of atmospheric concentration and trace the emission sources over time, a background gas with a known concentration has been used as a standard gas, and background atmospheric samples with unknown concentrations have been quantitatively tested using a single-point external standard method.

Shan Danying et al.

Status: open (until 02 Jan 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2022-783', Jens Mühle, 30 Sep 2022 reply
    • AC1: 'Reply on CC1', Danying Shan, 30 Sep 2022 reply

Shan Danying et al.

Shan Danying et al.

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Short summary
Monitoring and assessment of ozone-depleting substances and fluorinated greenhouse gases are required under the control of the Montreal and Kyoto Protocols. In this study, the existing commercial laboratory VOCs monitoring system was upgraded to establish a rapid and convenient high-precision monitoring technology.