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J Chromatogr A

Title:		On-line trace monitoring of volatile halogenated compounds in air by improved thermal desorption-gas chromatography-mass spectrometry
Author(s):		Jiang J; Ji Y; Li X;
Address:		"Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, PR China. Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, PR China; Institute of Eco-Chongming (IEC), Shanghai 200062, PR China. Electronic address: lixiang@fudan.edu.cn"
Journal Title:		J Chromatogr A
Year:		2022
Volume:		20220915
Issue:
Page Number:		463507 -
DOI:		10.1016/j.chroma.2022.463507
ISSN/ISBN:		1873-3778 (Electronic) 0021-9673 (Linking)
Abstract:		"Volatile halogenated compounds (VHCs) are important industrial chemicals and play a crucial role in potential stratospheric ozone-depletion and global warming. Profiling of VHCs is of great significance but replete with challenges due to the species' richness and diversity. In this study, we developed a novel method employing water removal mode combined with thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) for on-line measurement of VHCs at the ultratrace level. By removing water with Nafion dryer tandem cold trap device, VHCs could achieve better separation and identification, and detection precision of VHCs lower than 10%. The proposed method exhibited limits of detection for VHCs ranging from 0.1 to 6.2 pptv. Benefiting from the improved trapping efficiency due to water removal, we successfully quantified 34 VHCs at the Shangdianzi background station and achieved a comprehensive assessment of VHCs in ambient air"
Keywords:		Air/analysis *Air Pollutants/analysis Gas Chromatography-Mass Spectrometry/methods Stratospheric Ozone/analysis *Volatile Organic Compounds/analysis Water/analysis Air analysis On-line measurement Thermal desorption-gas chromatography-mass spectrometry Vo;
Notes:		"MedlineJiang, Jiakui Ji, Yongyan Li, Xiang eng Netherlands 2022/09/27 J Chromatogr A. 2022 Oct 25; 1682:463507. doi: 10.1016/j.chroma.2022.463507. Epub 2022 Sep 15"