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Trends of chemical speciation profiles of anthropogenic volatile organic compounds emissions in China, 2005–2020

Content Provider	Springer Nature Link
Author	Wei, Wei Wang, Shuxiao Hao, Jiming Cheng, Shuiyuan
Copyright Year	2012
Abstract	This study estimates the detailed chemical profiles of China’s anthropogenic volatile organic compounds (VOCs) emissions for the period of 2005–2020. The chemical profiles of VOCs for seven activity sectors are calculated, based on which the Photochemical Ozone Creation Potential (POCP) of VOCs for these sectors is evaluated. At the national level, the VOCs species emitted in 2005 include alkanes, alkenes and alkynes, aromatic compounds, alcohols, ketones, aldehydes, esters, ethers and halocarbons, accounting for 26.4 wt.%, 29.2 wt.%, 21.3 wt.%, 4.7 wt.%, 5.4 wt.%, 1.7 wt.%, 2.1 wt.%, 0.7 wt. % and 2.2 wt.% of total emissions, respectively. And during 2005-2020, their mass proportions would respectively grow or decrease by − 6.9%, − 32.7%, 7.3%, 65.3%, 34.7%, − 48.6%, 108.5%, 100.5%, and 55.4%. This change would bring about a 13% reduction of POCP for national VOCs emissions in the future. Thus, although the national VOCs emissions are expected to increase by 33% over the whole period, its ozone formation potential is estimated to rise only by 14%. Large discrepancies are found in VOCs speciation emissions among provinces. Compared to western provinces, the eastern provinces with a more developed economy would emit unsaturated hydrocarbons and benzene with lower mix ratios, and aromatic compounds except benzene, oxidized hydrocarbons and halocarbons with higher mix ratios. Such differences lead to lower POCP of VOCs emitted in eastern provinces, and higher POCP of VOCs emitted in western provinces. However, due to the large VOCs emissions from Chinese eastern region, the ozone formation potential of VOCs emission in eastern provinces would be much higher than those in western provinces by about 156%–235%.
Starting Page	27
Ending Page	41
Page Count	15
File Format	PDF
ISSN	20952201
Journal	Frontiers of Environmental Science & Engineering in China
Volume Number	8
Issue Number	1
e-ISSN	2095221X
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2012-10-17
Publisher Institution	Chinese Universities
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	volatile organic compounds (VOCs) chemical speciation ozone formation Photochemical Ozone Creation Potential (POCP) China Environment
Content Type	Text
Resource Type	Article
Subject	Environmental Science

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