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Environ Sci Technol

Title:		Effects of Anthropogenic and Biogenic Volatile Organic Compounds on Los Angeles Air Quality
Author(s):		Gu S; Guenther A; Faiola C;
Address:		"Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, California 92697, United States. Department of Earth System Science, University of California Irvine, Irvine, California 92697, United States. Department of Chemistry, University of California Irvine, Irvine, California 92697, United States"
Journal Title:		Environ Sci Technol
Year:		2021
Volume:		20210908
Issue:		18
Page Number:		12191 - 12201
DOI:		10.1021/acs.est.1c01481
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"Assessing the role of volatile organic compounds (VOCs) in production of ozone and secondary organic aerosol (SOA) is especially important in light of ongoing policy goals. Here, we estimated the ozone formation potential (OFP) and SOA formation potential (SOAP) of anthropogenic and biogenic VOC emissions to evaluate (1) anthropogenic VOCs and associated sectors that dominate OFP and SOAP and (2) the potential impacts of enhanced biogenic VOCs from urban greening programs on air quality in Los Angeles county. In the present-day scenario, ethylene had the largest OFP followed by m & p-xylene, toluene, propylene, and formaldehyde. The top five contributors to SOAP were toluene, mineral spirits, benzene, heptadecane, and hexadecane. Mobile and solvent sources were the dominant VOC sources for both OFP and SOAP. The potential increases in biogenic VOC emissions due to future urban greening had significant effects on urban air quality that offset the benefits of reducing anthropogenic VOC emissions. This study demonstrates that urban greening programs in Los Angeles county, and likely other cities as well, need to account for both anthropogenic and biogenic VOC contributions to secondary pollution, and greening cities should consider using vegetation types with low VOC emissions to avoid further degradation to urban air quality"
Keywords:		*Air Pollutants/analysis *Air Pollution China Environmental Monitoring Los Angeles *Ozone/analysis *Volatile Organic Compounds/analysis air quality ozone secondary organic aerosol urban greening volatile organic compounds;
Notes:		"MedlineGu, Shan Guenther, Alex Faiola, Celia eng Research Support, U.S. Gov't, Non-P.H.S. 2021/09/09 Environ Sci Technol. 2021 Sep 21; 55(18):12191-12201. doi: 10.1021/acs.est.1c01481. Epub 2021 Sep 8"