« Previous AbstractFeather chemicals contain information about the major histocompatibility complex in a highly scented seabird    Next AbstractGenetic variation for sensitivity to a thyme monoterpene in associated plant species »

Geophys Res Lett

Title:		"Measurements of Volatile Organic Compounds During the COVID-19 Lockdown in Changzhou, China"
Author(s):		Jensen A; Liu Z; Tan W; Dix B; Chen T; Koss A; Zhu L; Li L; de Gouw J;
Address:		Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder CO USA. Department of Chemistry University of Colorado Boulder CO USA. School of Environmental and Chemical Engineering Shanghai University Shanghai China. Changzhou Institute of Environmental Science Changzhou China. Tofwerk AG Thun Switzerland. Environment Research Institute Shandong University Qingdao China
Journal Title:		Geophys Res Lett
Year:		2021
Volume:		20211015
Issue:		20
Page Number:		e2021GL095560 -
DOI:		10.1029/2021GL095560
ISSN/ISBN:		0094-8276 (Print) 1944-8007 (Electronic) 0094-8276 (Linking)
Abstract:		"The COVID-19 outbreak in 2020 prompted strict lockdowns, reduced human activity, and reduced emissions of air pollutants. We measured volatile organic compounds (VOCs) using a proton-transfer-reaction mass spectrometry instrument in Changzhou, China from 8 January through 27 March, including periods of pre-lockdown, strict measures (level 1), and more relaxed measures (level 2). We analyze the data using positive matrix factorization and resolve four factors: textile industrial emissions (62 +/- 10% average reduction during level 1 relative to pre-lockdown), pharmaceutical industrial emissions (40 +/- 20%), traffic emissions (71 +/- 10%), and secondary chemistry (20 +/- 20%). The two industrial sources showed different responses to the lockdown, so emissions from the industrial sector should not be scaled uniformly. The quantified changes in VOCs due to the lockdowns constrain emission inventories and inform chemistry-transport models, particularly for sectors where activity data are sparse, as the effects of lockdowns on air quality are explored"
Keywords:		Covid-19 Emissions Industry Transportation volatile organic compounds;
Notes:		"PubMed-not-MEDLINEJensen, Andrew Liu, Zhiqiang Tan, Wen Dix, Barbara Chen, Tianshu Koss, Abigail Zhu, Liang Li, Li de Gouw, Joost eng 2021/12/21 Geophys Res Lett. 2021 Oct 28; 48(20):e2021GL095560. doi: 10.1029/2021GL095560. Epub 2021 Oct 15"