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DOI	10.1016/j.envpol.2021.116970
	PM1 chemical composition and light absorption properties in urban and rural areas within Sichuan Basin, southwest China
	Zhao, Suping; Yin, Daiying; Yu, Ye; Kang, Shichang; Ren, Xiaolin; Zhang, Jing; Zou, Yong; Qin, Dahe
通讯作者	Yin, DY (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	0269-7491
EISSN	1873-6424
卷号	280
英文摘要	Sichuan Basin is encircled by high mountains and plateaus with the heights ranging from 1 km to 3 km, and is one of the most polluted regions in China. However, the dominant chemical species and light absorption properties of aerosol particles is still not clear in rural areas. Chemical composition in PM1 (airborne particulate matter with an aerodynamic diameter less than 1 mu m) and light-absorbing properties were determined in Chengdu (urban) and Sanbacun (rural) in western Sichuan Basin (WSB), Southwest China. Carbonaceous aerosols and secondary inorganic ions (NH4+, NO3- and SO42-) dominate PM1 pollution, contributing more than 85% to PM1 mass at WSB. The mean concentrations of organic and elemental carbon (OC, EC), K+ and Cl- are 19.69 mu g m(-3), 8.00 mu g m(-3), 1.32 mu g m(-3),1.16 mu g m(-3) at the rural site, which are 26.2%, 65.3%, 34.7% and 48.7% higher than those at the urban site, respectively. BrC (brown carbon) light absorption coefficient at 405 nm is 63.90 +/- 27.81 M m(-1) at the rural site, contributing more than half of total absorption, which is about five times higher than that at urban site (10.43 +/- 4.74 M m(-1)). Compared with secondary OC, rural BrC light absorption more depends on primary OC from biomass and coal burning. The rural MAE(Brc) (BrC mass absorption efficiency) at 405 nm ranges from 0.6 to 5.1 m(2) g(-1) with mean value of 3.5 +/- 0.8 m(2) g(-1), which is about three times higher than the urban site. (C) 2021 Elsevier Ltd. All rights reserved.
关键词	SOLUBLE ORGANIC-CARBON PROVINCIAL CAPITAL CITIES PARTICULATE AIR-POLLUTION BROWN CARBON SOURCE APPORTIONMENT ATMOSPHERIC AEROSOL TEMPORAL VARIATIONS CLIMATE-CHANGE BLACK CARBON 2 MEGACITIES
英文关键词	PM1; Chemical species; Sichuan basin; Rural; Light absorption
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000656553300002
来源期刊	ENVIRONMENTAL POLLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253980
作者单位	[Zhao, Suping; Yu, Ye] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China; [Zhao, Suping; Yu, Ye] Pingliang Land Surface Proc & Severe Weather Res, Pingliang 744015, Peoples R China; [Yin, Daiying; Qin, Dahe] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China; [Yin, Daiying] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Kang, Shichang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Kang, Shichang] CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Ren, Xiaolin; Zhang, Jing] Maerkang Meteorol Bur, Maerkang 624000, Peoples R China; [Zou, Yong] Lixian Meteorol Bur, Lixian 624000, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Suping,Yin, Daiying,Yu, Ye,et al. PM1 chemical composition and light absorption properties in urban and rural areas within Sichuan Basin, southwest China[J]. 中国科学院西北生态环境资源研究院,2021,280.
APA	Zhao, Suping.,Yin, Daiying.,Yu, Ye.,Kang, Shichang.,Ren, Xiaolin.,...&Qin, Dahe.(2021).PM1 chemical composition and light absorption properties in urban and rural areas within Sichuan Basin, southwest China.ENVIRONMENTAL POLLUTION,280.
MLA	Zhao, Suping,et al."PM1 chemical composition and light absorption properties in urban and rural areas within Sichuan Basin, southwest China".ENVIRONMENTAL POLLUTION 280(2021).