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学科主题: 地理学::自然地理学
题名: Light absorption of biomass burning and vehicle emission-sourced carbonaceous aerosols of the Tibetan Plateau
作者: Hu, ZF (Hu, Zhaofu)1, 2, 3; Kang, SC (Kang, Shichang)1, 4; Li, CL (Li, Chaoliu)2, 4, 5; Yan, FP (Yan, Fangping)5; Chen, PF (Chen, Pengfei)1; Gao, SP (Gao, Shaopeng)2; Wang, ZY (Wang, Zhiyong)6; Zhang, YL (Zhang, Yulan)1; Sillanpaa, M (Sillanpaa, Mika)5, 7
通讯作者: Li, CL
关键词: SOLUBLE ORGANIC-CARBON ; ELEMENTAL CARBON ; BLACK CARBON ; BROWN CARBON ; CHEMICAL CHARACTERISTICS ; NORTHERN CHINA ; UNITED-STATES ; WATER ; COMBUSTION ; PARTICLES
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
发表日期: 2017
DOI: 10.1007/s11356-017-9077-3
卷: 24, 期:18, 页:15369-15378
收录类别: SCI
合作性质: 国际
文章类型: Article
类目[WOS]: Environmental Sciences ; Environmental Sciences & Ecology
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Carbonaceous aerosols over the Tibetan Plateau originate primarily from biomass burning and vehicle emissions (BB and VEs, respectively). The light absorption characteristics of these carbonaceous aerosols are closely correlated with the burning conditions and represent key factors that influence climate forcing. In this study, the light absorption characteristics of elemental carbon (EC) and water-soluble organic carbon (WSOC) in PM2.5 (fine particulate matter smaller than 2.5 mu m) generated from BB and VEs were investigated over the Tibetan Plateau (TP). The results showed that the organic carbon (OC)/EC ratios from BB- and VE-sourced PM2.5 were 17.62 +/- 10.19 and 1.19 +/- 0.36, respectively. These values were higher than the ratios in other regions, which was primarily because of the diminished amount of oxygen over the TP. The mass absorption cross section of EC (MAC(EC)) at 632 nm for the BB-sourced PM2.5 (6.10 +/- 1.21 m(2).g(-1)) was lower than that of the VE-sourced PM2.5 (8.10 +/- 0.98 m(2).g(-1)), indicating that the EC content of the BB-sourced PM2.5 was overestimated because of the high OC/EC ratio. The respective absorption per mass (alpha/rho) values at 365 nm for the VE- and BB-sourced PM2.5 were 0.71 +/- 0.17 m(2).g(-1) and 0.91 +/- 0.18 m(2).g(-1). The alpha/rho value of the VEs was loaded between that of gasoline and diesel emissions, indicating that the VE-sourced PM2.5 originated from both types of emissions. Because OC and WSOC accounts for most of the carbonaceous aerosols at remote area of the TP, the radiative forcing contributed by the WSOC should be high, and requires further investigation.
语种: 英语
WOS记录号: WOS:000404358200016
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8201
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China.
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China.
4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
5.Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, Mikkeli 50130, Finland.
6.Xinyang Agr & Forestry Univ, Dept Hort, Xinyang 464000, Peoples R China.
7.Florida Int Univ, Dept Civil & Environm Engn, Miami, FL 33174 USA.

Recommended Citation:
Hu, ZF ,Kang, SC ,Li, CL ,et al. Light absorption of biomass burning and vehicle emission-sourced carbonaceous aerosols of the Tibetan Plateau[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2017,24(18):15369-15378.
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