Size-resolved airborne particulate oxalic and related secondary organicaerosol species in the urban atmosphere of Chengdu, China

doi:10.1016/j.atmosres.2015.04.010

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Size-resolved airborne particulate oxalic and related secondary organicaerosol species in the urban atmosphere of Chengdu, China
	Wang,QY(Wang,Qiyuan)[1,2]; Cheng,CL(Cheng,Chunlei)[1,2,3]; Wang,GH(Wang,Gehui)[1,2,4]; Wang,JY(Wang,Jiayuan)[1,2,3]; Li,JJ(Li,Jianjun)[1,2]; Cao,JJ(Cao,Junji)[1,2]; Meng,JJ(Meng,Jingjing)[1,2]
刊名	Atmospheric Research
	2015-08-01
卷号	161-162 期号:2015 页码:134-142
关键词	Size distribution Secondary organic aerosols Aqueous phase chemistry Liquid water content Biomass burning
DOI	10.1016/j.atmosres.2015.04.010
文献子类	期刊论文
英文摘要	Size-segregated (9-stages) airborne particles during winter in Chengdu city of China were collected on a day/night basis and determined for dicarboxylic acids (diacids), ketocarboxylic acids (ketoacids), α-dicarbonyls, inorganic ions, and water-soluble organic carbon and nitrogen (WSOC and WSON). Diacid concentration was higher in nighttime (1831 ± 607 ng m− 3) than in daytime (1532 ± 196 ng m− 3), whereas ketoacids and dicarbonyls showed little diurnal difference. Most of the organic compounds were enriched in the fine mode (< 2.1 μm) with a peak at the size range of 0.7–2.1 μm. In contrast, phthalic acid (Ph) and glyoxal (Gly) presented two equivalent peaks in the fine and coarse modes, which is at least in part due to the gas-phase oxidation of precursors and a subsequent partitioning into pre-existing particles. Liquid water content (LWC) of the fine mode particles was three times higher in nighttime than in daytime. The calculated in-situ pH (pHis) indicated that all the fine mode aerosols were acidic during the sampling period and more acidic in daytime than in nighttime. Robust correlations of the ratios of glyoxal/oxalic acid (Gly/C2) and glyoxylic acid/oxalic acid (ωC2/C2) with LWC in the samples suggest that the enhancement of LWC is favorable for oxidation of Gly and ωC2 to produce C2. Abundant K+ and Cl− in the fine mode particles and the strong correlations of K+ with WSOC, WSON and C2 indicate that secondary organic aerosols in the city are significantly affected by biomass burning emission.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/9620]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
作者单位	1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; 2.Department of Environmental Science, Xi'an Jiaotong University, Xi'an 710049, China 3.University of Chinese Academy of Sciences, Beijing 100049, China; 4.Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China;
推荐引用方式 GB/T 7714	Wang,QY,Cheng,CL,Wang,GH,et al. Size-resolved airborne particulate oxalic and related secondary organicaerosol species in the urban atmosphere of Chengdu, China[J]. Atmospheric Research,2015,161-162(2015):134-142.
APA	Wang,QY.,Cheng,CL.,Wang,GH.,Wang,JY.,Li,JJ.,...&Meng,JJ.(2015).Size-resolved airborne particulate oxalic and related secondary organicaerosol species in the urban atmosphere of Chengdu, China.Atmospheric Research,161-162(2015),134-142.
MLA	Wang,QY,et al."Size-resolved airborne particulate oxalic and related secondary organicaerosol species in the urban atmosphere of Chengdu, China".Atmospheric Research 161-162.2015(2015):134-142.