气候变化领域集成服务门户(CCPortal): Molecular composition and source apportionment of fine organic aerosols in Northeast China

CCPortal

DOI	10.1016/j.atmosenv.2020.117722
	Molecular composition and source apportionment of fine organic aerosols in Northeast China
	Wu X.; Cao F.; Haque M.; Fan M.-Y.; Zhang S.-C.; Zhang Y.-L.
发表日期	2020
ISSN	13522310
卷号	239
英文摘要	We examined the characteristics and source apportionment of organic aerosols in ambient PM2.5 samples collected during the late autumn in Changchun, Northeast China. 8 compound classes (>90 individual species) were detected in the aerosol samples, including biomass burning tracers, aliphatic lipids (fatty acids and fatty alcohols), secondary oxidation products, polycyclic aromatic hydrocarbons (PAHs), sugar compounds, hopanes and biogenic secondary organic aerosol (SOA) tracers. The concentrations of total quantified organic species ranged from 138.2 to 6.8 × 103 ng m−3, among which levoglucosan was the most abundant compound. Biomass burning tracers (anhydrosugars, lignin and resin acids) were the most abundant compounds, followed by fatty acids, secondary oxidation products, PAHs, sugar compounds and fatty alcohols. Biogenic SOA tracers and hopanes were less abundant. The homohopane index [defined as 31abS/(31abS + 31abR)] was 0.5, indicating a potential contribution of traffic emission. PAHs showed a dominance of benzo(b)fluoranthene (BbF), and the diagnostic ratios implicated a substantial contribution of petroleum combustion as well as coal combustion. 2-methylglyceric acid to 2-methyltetrols ratio (2.2) indicated that NOx influence isoprene oxidation products formation. Furthermore, the average ratio of cis-pinonic acid plus pinic acid to 3-hydroxyglutaric acid (31.4) revealed the much fresher α/β-pinene oxidation products to some extent. A good correlation was found between β-caryophyllinic acid and levoglucosan (r = 0.61), suggesting that β-caryophyllene can mainly be generated by biomass burning. The biogenic secondary organic carbon (SOC) was underestimated by the tracer-based method, which only occupied 0.4% of the organic carbon (OC). In contrast, PMF model indicated that emissions from fossil fuel combustion and biomass burning were most important, accounting for 42.4% and 33.6%, respectively, followed by biogenic SOA emission (17.0%) and fungal spore derived source (7.0%), suggesting biogenic aerosol is a nonnegative contributor. Capsule: Fossil fuel combustion (42.4%) as well as biomass burning (33.6%) were most important contributors of organic aerosols in a typical city in Northeast China. © 2020 Elsevier Ltd
英文关键词	Northeast China; Organic aerosols; PMF model; SOA tracers; Source apportionment
语种	英语
scopus关键词	Aerosols; Alcohols; Aliphatic hydrocarbons; Biomass; Coal combustion; Fossil fuels; Organic carbon; Oxidation; Polycyclic aromatic hydrocarbons; Sugar industry; Tracers; 2-methylglyceric acid; 3-hydroxyglutaric acids; Fossil fuel combustion; Molecular compositions; Polycyclic aromatic hydrocarbons (PAHS); Secondary organic aerosols; Secondary organic carbons (SOC); Secondary oxidation products; Fatty acids; 3-hydroxyglutaric acid; benzo[a]pyrene; benzo[b]fluoranthene; benzo[e]pyrene; benzo[ghi]perylene; benzo[k]fluoranthene; benz[a]anthracene; beta pinene; chrysene; citric acid; coal; coronene; dibenz[a,h]anthracene; fatty acid; fatty alcohol; glyceric acid; glycerol; indeno[1,2,3 cd]pyrene; levoglucosan; lignin; malic acid; perylene; petroleum; pinic acid; pinonic acid; polycyclic aromatic hydrocarbon; resin; sugar; tartaric acid; unclassified drug; volatile organic compound; aerosol composition; biomass burning; chemical composition; fossil fuel; molecular analysis; organic compound; source apportionment; aerosol; Article; autumn; biomass; China; combustion; oxidation; particulate matter; priority journal; rural area; secondary organic aerosol; Aerosols; Alcohols; Biomass; Fossil Fuels; Oxidation; Tracers; Changchun; China; Jilin
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145008
作者单位	Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change (ILCEC), Nanjing University of Information Science & Technology, Nanjing, 210044, China; Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing, 210044, China; Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
推荐引用方式 GB/T 7714	Wu X.,Cao F.,Haque M.,et al. Molecular composition and source apportionment of fine organic aerosols in Northeast China[J],2020,239.
APA	Wu X.,Cao F.,Haque M.,Fan M.-Y.,Zhang S.-C.,&Zhang Y.-L..(2020).Molecular composition and source apportionment of fine organic aerosols in Northeast China.Atmospheric Environment,239.
MLA	Wu X.,et al."Molecular composition and source apportionment of fine organic aerosols in Northeast China".Atmospheric Environment 239(2020).