title: Characteristics and anthropogenic sources of carbonyl sulfide in Beijing.
abstract: Atmospheric mixing ratios of carbonyl sulfide (COS) in Beijing were intensively measured from March 2011 to June 2013. COS mixing ratios exhibited distinct seasonal variation, with a maximum average value of 849±477 pptv in winter and a minimal value of 372±115 pptv in summer. The seasonal variation of COS was mainly ascribed to the combined effects of vegetation uptake and anthropogenic emissions. Two types of significant linear correlations (R2>0.66) were found between COS and CO during the periods from May to June and from October to March, with slopes (ΔCOS/ΔCO) of 0.72 and 0.14 pptv/ppbv, respectively. Based on the emission ratios of COS/CO from various sources, the dominant anthropogenic sources of COS in Beijing were found to be vehicle tire wear in summer and coal burning in winter. The total anthropogenic emission of COS in Beijing was roughly estimated as 0.53±0.02 Gg/year based on the local CO emission inventory and the ΔCOS/ΔCO ratios.
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Electronic address: chengye0124@gmail.com.
authors: Ye
authors: Y
authors: Cheng
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Chenglong
authors: C
authors: Zhang
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Yuanyuan
authors: Y
authors: Zhang
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Hongxing
authors: H
authors: Zhang
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Xu
authors: X
authors: Sun
authors: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Electronic address: yjmu@rcees.ac.cn.
authors: Yujing
authors: Y
authors: Mu
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China; D002849:Chromatography, Gas; D004784:Environmental Monitoring; D012621:Seasons; D013461:Sulfur Oxides / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D013461:Sulfur Oxides; C010063:carbonyl sulfide
keywords: Anthropogenic sources; Carbon monoxide; Carbonyl sulfide; Coal combustion; Vehicle tire wire