干旱区生态环境知识资源中心(Arid): Aerosols chemical composition, light extinction, and source apportionment near a desert margin city, Yulin, China

Arid

DOI	10.7717/peerj.8447
	Aerosols chemical composition, light extinction, and source apportionment near a desert margin city, Yulin, China
	Lei, Yali 1; Shen, Zhenxing 1; Tang, Zhuoyue 1; Zhang, Qian 2; Sun, Jian 1; Ma, Yongjing 3,4; Wu, Xiaoyan 3,4; Qin, Yiming 5; Xu, Hongmei 1; Zhang, Renjian 6
通讯作者	Shen, Zhenxing ; Zhang, Renjian
来源期刊	PEERJ
ISSN	2167-8359
出版年	2020
卷号	8
英文摘要	Daily PM10 and PM2.5 sampling was conducted during four seasons from December 2013 to October 2014 at three monitoring sites over Yulin, a desert margin city. PM10 and PM2.5 levels, water soluble ions, organic carbon (OC), and elemental carbon (EC) were also analyzed to characterize their chemical profiles. b(ext) (light extinction coefficient) was calculated, which showed the highest in winter with an average of 232.95 +/- 154.88 Mm(-1), followed by autumn, summer, spring. Light extinction source apportionment results investigated (NH4)(2)SO4 and NH4NO3 played key roles in the light extinction under high RH conditions during summer and winter. Sulfate, nitrate and Ca2+ dominated in PM10/PM2.5 ions. Ion balance results illustrated that PM samples were alkaline, and PM10 samples were more alkaline than PM2.5. High SO42-/K+ and Cl-/K+ ratio indicated the important contribution of coal combustion, which was consistent with the OC/EC regression equation intercepts results. Principal component analysis (PCA) analyses results showed that the fugitive dust was the most major source of PM, followed by coal combustion & gasoline vehicle emissions, secondary formation and diesel vehicle emissions. Potential contribution source function (PSCF) results suggested that local emissions, as well as certain regional transport from northwesterly and southerly areas contributed to PM2.5 loadings during the whole year. Local government should take some measures to reduce the PM levels.
英文关键词	PM10/PM2.5 Chemical species Light extinction Potential contribution source function Principal component analysis Yulin
类型	Article
语种	英语
国家	Peoples R China ; USA
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000513590700003
WOS关键词	FINE PARTICULATE MATTER ; SEASONAL-VARIATIONS ; URBAN SITE ; XIAN ; POLLUTION ; WINTER ; VISIBILITY ; CARBON ; PM2.5 ; IDENTIFICATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	兰州大学 ; 中国科学院大气物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315288
作者单位	1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian, Shaanxi, Peoples R China; 2.Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Xian, Shaanxi, Peoples R China; 3.Lanzhou Univ, Coll Atmospher Sci, Key Lab Arid Climat Change & Reducing Disaster Ga, Lanzhou, Peoples R China; 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing, Peoples R China; 5.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 6.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm Res Temperate East A, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Lei, Yali,Shen, Zhenxing,Tang, Zhuoyue,et al. Aerosols chemical composition, light extinction, and source apportionment near a desert margin city, Yulin, China[J]. 兰州大学, 中国科学院大气物理研究所,2020,8.
APA	Lei, Yali.,Shen, Zhenxing.,Tang, Zhuoyue.,Zhang, Qian.,Sun, Jian.,...&Zhang, Renjian.(2020).Aerosols chemical composition, light extinction, and source apportionment near a desert margin city, Yulin, China.PEERJ,8.
MLA	Lei, Yali,et al."Aerosols chemical composition, light extinction, and source apportionment near a desert margin city, Yulin, China".PEERJ 8(2020).