Characteristics of carbonaceous aerosols: Impact of biomass burning and   secondary formation in summertime in a rural area of the North China   Plain

doi:10.1016/j.scitotenv.2016.03.111

CORC > 北京大学 > 环境科学与工程学院

	Characteristics of carbonaceous aerosols: Impact of biomass burning and secondary formation in summertime in a rural area of the North China Plain
	Yao, Lan ; Yang, Lingxiao ; Chen, Jianmin ; Wang, Xinfeng ; Xue, Likun ; Li, Weijun ; Sui, Xiao ; Wen, Liang ; Chi, Jianwei ; Zhu, Yanhong ; Zhanga, Junmei ; Xu, Caihong ; Zhu, Tong ; Wang, Wenxing
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2016
关键词	Carbonaceous aerosols OM/OC ratio Biomass burning SOA formation ORGANIC-CARBON MIXING STATE ATMOSPHERIC AEROSOLS CHEMICAL-COMPOSITION INITIATED REACTIONS BEIJING AEROSOL SOA FORMATION RIVER DELTA MASS URBAN
DOI	10.1016/j.scitotenv.2016.03.111
英文摘要	To determine the characteristics of carbonaceous aerosols in rural areas of the North China Plain, field measurements were conducted at Yucheng (YC) in the summers of 2013 and 2014. The concentrations of carbonaceous aerosols at YC exhibited clear diurnal variation, with higher concentrations in the early morning and at night and lower concentrations during the afternoon hours. The mass-balance method designed for particulate matter smaller than 2.5 mu m (PM2.5) was used to calculate the organic matter (OM)/organic carbon (OC) ratio. The value obtained, 2.07 +/- 0.05, was suggested as a reference to estimate organics in PM2.5 in rural areas of the North China Plain. Biomass burning was identified to be a significant source of carbonaceous aerosols; approximately half of the samples obtained at YC were affected by biomass burning during summer 2013. Case studies revealed that biomass burning accounted for up to 52.6% of the OC and 51.1% of the elemental carbon in PM2.5 samples. The organic coatings observed on sulphur-rich and potassium-rich particles indicated the formation of secondary organic aerosols (SOA) from the oxidation of precursor volatile organic compounds (VOCs) during the aging of smoke released from biomass burning. Based on the evolution of the VOCs, the contribution of VOCs oxidation to SOA concentration was 3.21 and 1.07 mu g m(-3) ppm(-1) CO under conditions of low nitrogen oxide (NOx) and high NOx, respectively. Aromatics (e.g. benzene, toluene, xylene and ethylbenzene) made the greatest contribution to SOA concentration (88.4% in low-NOx conditions and 80.6% in high-NOx conditions). The results of the study offer novel insights into the effects of biomass burning on the carbonaceous aerosols and SOA formation in polluted rural areas. (C) 2016 Elsevier B.V. All rights reserved.; Taishan Scholar Grant [TS 20120552]; National Natural Science Foundation of China [41375126, 41275123, 21190053, 21177025, 21577079, 21307074]; Fundamental Research Funds of Shandong University [2014GN010]; Shanghai Science and Technology Commission of Shanghai Municipality [13XD1400700, 12DJ1400100]; Strategic Priority Research Programme of the Chinese Academy of Sciences [XDB05010200]; Special Research for Public-Beneficial Environment Protection [201009001-1]; Hong Kong Polytechnic University [4-ZZCQ]; SCI(E); EI; PubMed; ARTICLE; yanglingxiao@sdu.edu.cn; 520-530; 557
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/434304]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yao, Lan,Yang, Lingxiao,Chen, Jianmin,et al. Characteristics of carbonaceous aerosols: Impact of biomass burning and secondary formation in summertime in a rural area of the North China Plain[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016.
APA	Yao, Lan.,Yang, Lingxiao.,Chen, Jianmin.,Wang, Xinfeng.,Xue, Likun.,...&Wang, Wenxing.(2016).Characteristics of carbonaceous aerosols: Impact of biomass burning and secondary formation in summertime in a rural area of the North China Plain.SCIENCE OF THE TOTAL ENVIRONMENT.
MLA	Yao, Lan,et al."Characteristics of carbonaceous aerosols: Impact of biomass burning and secondary formation in summertime in a rural area of the North China Plain".SCIENCE OF THE TOTAL ENVIRONMENT (2016).