气候变化领域集成服务门户(CCPortal): Source characterization of volatile organic compounds measured by proton-transfer-reaction time-of-flight mass spectrometers in Delhi, India

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DOI	10.5194/acp-20-9753-2020
	Source characterization of volatile organic compounds measured by proton-transfer-reaction time-of-flight mass spectrometers in Delhi, India
	Wang L.; Slowik J.G.; Tripathi N.; Bhattu D.; Rai P.; Kumar V.; Vats P.; Satish R.; Baltensperger U.; Ganguly D.; Rastogi N.; Sahu L.K.; Tripathi S.N.; Prévôt A.S.H.
发表日期	2020
ISSN	1680-7316
起始页码	9753
结束页码	9770
卷号	20 期号:16
英文摘要	Characteristics and sources of volatile organic compounds (VOCs) were investigated with highly time-resolved simultaneous measurements by two proton-transfer-reaction time-of-flight mass spectrometers (PTR-ToF-MS) at an urban and a suburban site in New Delhi, India, from January to March 2018. During the measurement period, high mixing ratios of VOCs and trace gases were observed, with high nocturnal mixing ratios and strong day-night variations. The positive matrix factorization (PMF) receptor model was applied separately to the two sites, and six major factors of VOCs were identified at both sites, i.e., two factors related to traffic emissions, two to solid fuel combustion, and two secondary factors. At the urban site, traffic-related emissions comprising mostly mono-aromatic compounds were the dominant sources, contributing 56.6% of the total mixing ratio, compared to 36.0% at the suburban site. Emissions from various solid fuel combustion processes, particularly in the night, were identified as a significant source of aromatics, phenols and furans at both sites. The secondary factors accounted for 15.9% of the total VOC concentration at the urban site and for 33.6% at the suburban site. They were dominated by oxygenated VOCs and exhibited substantially higher contributions during daytime. © 2020 BMJ Publishing Group. All rights reserved.
语种	英语
scopus关键词	atmospheric chemistry; combustion; concentration (composition); mass spectrometry; matrix; mixing ratio; suburban area; trace gas; traffic emission; urban site; volatile organic compound; Delhi; India; New Delhi
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247574
作者单位	Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, 5232, Switzerland; Space and Atmospheric Sciences Division, Physical Research Laboratory, Ahmedabad, 380009, India; Department of Civil Engineering, Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India; Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, 110016, India; Geosciences Division, Physical Research Laboratory, Ahmedabad, 380009, India; Department of Civil and Infrastructure Engineering, Indian Institute of Technology Jodhpur, Rajasthan, 342037, India; Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, 11419, Sweden
推荐引用方式 GB/T 7714	Wang L.,Slowik J.G.,Tripathi N.,et al. Source characterization of volatile organic compounds measured by proton-transfer-reaction time-of-flight mass spectrometers in Delhi, India[J],2020,20(16).
APA	Wang L..,Slowik J.G..,Tripathi N..,Bhattu D..,Rai P..,...&Prévôt A.S.H..(2020).Source characterization of volatile organic compounds measured by proton-transfer-reaction time-of-flight mass spectrometers in Delhi, India.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(16).
MLA	Wang L.,et al."Source characterization of volatile organic compounds measured by proton-transfer-reaction time-of-flight mass spectrometers in Delhi, India".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.16(2020).