Characteristics of Carbonaceous Aerosol in PM2.5 at Wanzhou in the Southwest of China

doi:10.3390/atmos9020037

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 大气环境研究中心

	Characteristics of Carbonaceous Aerosol in PM2.5 at Wanzhou in the Southwest of China
	Huang, Yimin 1; Liu, Yuan2 ; Zhang, Liuyi 1,2; Peng, Chao 2; Yang, Fumo1,2
刊名	ATMOSPHERE
	2018-02-01
卷号	9 期号:2 页码:15
关键词	fine particle organic carbon elemental carbon secondary organic carbon
ISSN号	2073-4433
DOI	10.3390/atmos9020037
英文摘要	Hourly organic carbon (OC) and elemental carbon (EC) concentrations in PM2.5 were measured from June 2013 to May 2014 in Wanzhou, the second largest city in the Chongqing Municipality, in the southwest of China. Results show that the annual average concentrations of OC and EC were 13.16 +/- 7.98 and 3.12 +/- 1.51 gCm(-3), respectively. Clear seasonal variations of OC and EC concentrations were observed, with their concentrations at minima in summer and maxima in winter. The diel concentration profile of OC and EC presented a bimodal pattern, which was attributed to the cooperative effects of local meteorological conditions and source emissions. The daily average OC/EC ratio ranged from 2.05 to 8.17 with an average of 4.15 for the whole study period. Strong correlations between OC and EC were found in winter and spring, indicating their common sources, while their correlations were poorer in summer and autumn, indicating that the influence of biogenic emissions and secondary organic carbon (SOC) were significant during those seasons. The estimated SOC concentrations were 2.19 +/- 1.55, 7.66 +/- 5.89, 5.79 +/- 3.51, and 3.43 +/- 2.26 gCm(-3), accounting for 29.2%, 52.7%, 27.4%, and 30.5% of total organic carbon in summer, autumn, winter, and spring, respectively. The analysis of back trajectories suggested that high PM2.5, OC, and EC concentrations were associated with air masses originating from or passing over several industrial centers and urban areas in western and northwestern China. Air trajectories from the southeast with short pathways were the dominant trajectories arriving at Wanzhou, indicating that local sources had a big influence on PM2.5, OC, and EC concentrations.
资助项目	National Natural Science Foundation of China[41375123] ; Chongqing Municipal Education Commission[KJ1501001] ; Chongqing Municipal Education Commission[KJ1501006] ; Wanzhou project[201503049] ; Wanzhou project[2016037]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	MDPI
WOS记录号	WOS:000427507000003
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/6268]
专题	大气环境研究中心
通讯作者	Yang, Fumo
作者单位	1.Chongqing Three Gorges Univ, Key Lab Water Environm Evolut & Pollut Control Th, Wanzhou, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Reservoir Environm, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yimin,Liu, Yuan,Zhang, Liuyi,et al. Characteristics of Carbonaceous Aerosol in PM2.5 at Wanzhou in the Southwest of China[J]. ATMOSPHERE,2018,9(2):15.
APA	Huang, Yimin,Liu, Yuan,Zhang, Liuyi,Peng, Chao,&Yang, Fumo.(2018).Characteristics of Carbonaceous Aerosol in PM2.5 at Wanzhou in the Southwest of China.ATMOSPHERE,9(2),15.
MLA	Huang, Yimin,et al."Characteristics of Carbonaceous Aerosol in PM2.5 at Wanzhou in the Southwest of China".ATMOSPHERE 9.2(2018):15.