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Huan Jing Ke Xue

Title:		[Sources Apportionment of Oxygenated Volatile Organic Compounds (OVOCs) in a Typical Southwestern Region in China During Summer]
Author(s):		Chen ML; Wang SN; Chen TS; Zhu B; Peng C; Zhou JW; Che HX; Huang RH; Yang FM; Liu HF; Tan QW; Han L; Chen JH; Lu KD; Chen Y;
Address:		"Research Center for Atmospheric Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China. College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences(UCAS Chongqing), Chongqing 400714, China. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101400, China. Environment Research Institute, Shandong University, Qingdao 266237, China. Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China. College of Architecture and Environment, Sichuan University, Chengdu 610065, China. Chengdu Institute of Environmental Protection Science, Chengdu 610031, China. Sichuan Ecological and Environmental Science Research Department, Chengdu 610041, China. College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China"
Journal Title:		Huan Jing Ke Xue
Year:		2021
Volume:		42
Issue:		6
Page Number:		2648 - 2658
DOI:		10.13227/j.hjkx.202010101
ISSN/ISBN:		0250-3301 (Print) 0250-3301 (Linking)
Abstract:		"Oxygenated volatile organic compounds (OVOCs) are important intermediates in the troposphere and the most important sources of ozone. Proton-transfer-reaction time-of-flight mass spectrometry (PTR-TOF-MS) was used to measure VOCs in the Chengdu Plain, Southwestern China. The diurnal variations, photochemical reactivity, O(3) formation potential, and sources were also investigated. The mixing ratios of ten kinds of VOCs (acetaldehyde, acetone, isoprene, Methyl ethyl ketone, Methyl vinyl ketone and Methacrolein, benzene, toluene, styrene, C8 aromatics, and C9 aromatics) were (10.97+/-4.69)x10(-9). The concentrations of OVOCs, aromatic hydrocarbons, and biogenic VOCs were (8.54+/-3.44)x10(-9), (1.53+/-0.93)x10(-9), and (0.90+/-0.32)x10(-9), respectively. Isoprene, acetaldehyde, and m-xylene were the top three photochemically active species with the greatest O(3) formation potentials. The dominant three OVOCs species (acetaldehyde, acetone, and MEK) were mainly derived from local biogenic sources and anthropogenic secondary sources, and acetone had a strong regional background level, indicating that pollution in this area is significantly affected by regional transmission. This study deepens the understanding of regional O(3) formation mechanisms in southwest China and provides a basis for the scientifically informed control of O(3) pollution"
Keywords:		O3 formation potential oxygenated volatile organic compounds (OVOCs) photochemical age-based parameterization method proton-transfer-reaction time-of-flight mass spectrometry (PTR-TOF-MS) source apportionment;
Notes:		"PubMed-not-MEDLINEChen, Mu-Lan Wang, Sai-Nan Chen, Tian-Shu Zhu, Bo Peng, Chao Zhou, Jia-Wei Che, Han-Xiong Huang, Rui-Hui Yang, Fu-Mo Liu, He-Fan Tan, Qin-Wen Han, Li Chen, Jun-Hui Lu, Ke-Ding Chen, Yang chi English Abstract China 2021/05/26 Huan Jing Ke Xue. 2021 Jun 8; 42(6):2648-2658. doi: 10.13227/j.hjkx.202010101"