Water-soluble organic carbon (WSOC) and its temperature-resolved carbon fractions in atmospheric aerosols in Beijing

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气环境科学实验室

	Water-soluble organic carbon (WSOC) and its temperature-resolved carbon fractions in atmospheric aerosols in Beijing
	Tang, Xiong; Zhang, Xiaoshan; Wang, Zhangwei; Ci, Zhijia
刊名	ATMOSPHERIC RESEARCH
	2016-11-15
卷号	181 页码:200-210
关键词	Water-soluble organic carbon Organic carbon Temperature-resolved Source apportionment
英文摘要	Investigation of temperature-resolved carbon fractions of water-soluble organic carbon (WSOC) can improve our understanding of the chemical properties, formation processes and sources of WSOC in aerosols. We developed a method that can examine different temperature-resolved carbon fractions of WSOC and used this method to characterize aerosol samples (n = 102) collected from an urban site in Beijing in 2010-2011. The aerosol composition data including inorganic ions, elements and temperature-resolved carbon fractions of WSOC were used as input of positive matrix factorization (PMF) model to investigate the sources of WSOC. The results showed that the mean concentrations of WSOC were 10.2 mu g m(-3) with increased values in winter and decreased values in summer, while WSOC/OC ratios (mean: 51.7%) were higher in spring and summer than in fall and winter. The sampling artifacts of WSOC (18.2%) were higher than those of OC (13.4%). Though WSOC was significantly influenced by biomass burning in spring and winter, the strong correlations between WSOC and other secondary components suggested that WSOC was secondary in nature. Results of temperature-resolved carbon fractions of OC and WSOC showed that WSOC/OC ratios for different carbon fractions had the highest value of 0.92 and lowest value of 0.30. PMF analysis identified four factors, three of which were associated with three organic polar compounds groups (low, medium, and high molecular weight compounds) based on their thermal evolution features, and one of which was attributed to inorganic secondary formation processes. Annually, the contributions of four factors were 20.5%, 46.2%, 12.4% and 20.9%, respectively. (C) 2016 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35717]
专题	生态环境研究中心_大气环境科学实验室
推荐引用方式 GB/T 7714	Tang, Xiong,Zhang, Xiaoshan,Wang, Zhangwei,et al. Water-soluble organic carbon (WSOC) and its temperature-resolved carbon fractions in atmospheric aerosols in Beijing[J]. ATMOSPHERIC RESEARCH,2016,181:200-210.
APA	Tang, Xiong,Zhang, Xiaoshan,Wang, Zhangwei,&Ci, Zhijia.(2016).Water-soluble organic carbon (WSOC) and its temperature-resolved carbon fractions in atmospheric aerosols in Beijing.ATMOSPHERIC RESEARCH,181,200-210.
MLA	Tang, Xiong,et al."Water-soluble organic carbon (WSOC) and its temperature-resolved carbon fractions in atmospheric aerosols in Beijing".ATMOSPHERIC RESEARCH 181(2016):200-210.