Scattered coal is the largest source of ambient volatile organic compounds during the heating season in Beijing

doi:10.5194/acp-2020-168

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-168
	Scattered coal is the largest source of ambient volatile organic compounds during the heating season in Beijing
	Yuqi Shi, Ziyan Xi, Maimaiti Simayi, Jing Li, and Shaodong Xie
	2020-04-30
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	We identified scattered coal burning as the largest contributor to ambient volatile organic compounds (VOCs), exceeding traffic-related emissions, during the heating season in Beijing prior to the rigorous emission limitations enacted in 2017. However, scattered coal is underestimated in emission inventories generally, because the activity data are incompletely recorded in official energy statistics. Results of positive matrix factorization (PMF) models confirmed that coal burning was the largest contributor to VOC concentrations prior to the emission limitations of 2017, and a reduction in scattered coal combustion, especially in rural residential sector, was the primary factor in the observed decrease in ambient VOCs and secondary organic aerosol (SOA) formation potential in urban Beijing after 2017. Scattered coal burning was included in a corrected emission inventory and we obtained comparable results between this corrected inventory and PMF analyses, particularly for the non-control period. However, a refined source sub-classification showed that passenger car exhaust, petrochemical manufacturing, gas stations, traffic evaporation, traffic equipment manufacturing, painting, and electronics manufacturing are also contributors to ambient VOCs. These sources should focus on future emission reduction strategies and targets in Beijing. Moreover, in other region with scattered coal-based heating, scattered coal burning is still the key factor to improve the air quality in winter.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/248870
专题	地球科学
推荐引用方式 GB/T 7714	Yuqi Shi, Ziyan Xi, Maimaiti Simayi, Jing Li, and Shaodong Xie. Scattered coal is the largest source of ambient volatile organic compounds during the heating season in Beijing[J]. Atmospheric Chemistry and Physics,2020.
APA	Yuqi Shi, Ziyan Xi, Maimaiti Simayi, Jing Li, and Shaodong Xie.(2020).Scattered coal is the largest source of ambient volatile organic compounds during the heating season in Beijing.Atmospheric Chemistry and Physics.
MLA	Yuqi Shi, Ziyan Xi, Maimaiti Simayi, Jing Li, and Shaodong Xie."Scattered coal is the largest source of ambient volatile organic compounds during the heating season in Beijing".Atmospheric Chemistry and Physics (2020).