Brown Carbon Aerosol in Urban Xi'an, Northwest China: The Composition and Light Absorption Properties
文献类型：期刊论文
| 作者 | Chen, Yang3; Chen, Qi4; Huang, Ru-Jin2; Yang, Lu2; Cao, Junji2; Li, Yongjie5; Zhang, Renjian8; Tie, Xuexi2; Hoffmann, Thorsten6; O'Dowd, Colin1,7 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2018-06-19 |
| 卷号 | 52期号:12页码:6825-6833 |
| DOI | 10.1021/acs.est.8b02386 |
| 文献子类 | Article |
| 英文摘要 | Light-absorbing organic carbon (i.e., brown carbon or BrC) in the atmospheric aerosol has significant contribution to light absorption and radiative forcing. However, the link between BrC optical properties and chemical composition remains poorly constrained. In this study, we combine spectrophotometric measurements and chemical analyses of BrC samples collected from July 2008 to June 2009 in urban Xi'an, Northwest China. Elevated BrC was observed in winter (5 times higher than in summer), largely due to increased emissions from wintertime domestic biomass burning. The light absorption coefficient of methanol-soluble BrC at 365 nm (on average approximately twice that of water-soluble BrC) was found to correlate strongly with both parent polycyclic aromatic hydrocarbons (parent-PAHs, 27 species) and their carbonyl oxygenated derivatives (carbonyl-OPAHs, 15 species) in all seasons (r(2) > 0.61). These measured parent-PAHs and carbonyl-OPAHs account for on average similar to 1.7% of the overall absorption of methanol-soluble BrC, about 5 times higher than their mass fraction in total organic carbon (OC, similar to 0.35%). The fractional solar absorption by BrC relative to element carbon (EC) in the ultraviolet range (300-400 nm) is significant during winter (42 +/- 18% for water-soluble BrC and 76 +/- 29% for methanol-soluble BrC), which may greatly affect the radiative balance and tropospheric photochemistry and therefore the climate and air quality. |
| WOS关键词 | SOLUBLE ORGANIC-CARBON ; SOUTHEASTERN UNITED-STATES ; BIOMASS-BURNING EMISSIONS ; FINE PARTICULATE MATTER ; BLACK CARBON ; OPTICAL-PROPERTIES ; SOLAR-RADIATION ; SOURCE APPORTIONMENT ; ANGSTROM EXPONENT ; WATER |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000436018900013 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5092]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 作者单位 | 1.Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway H91 CF50, Ireland 2.Chinese Acad Sci, Inst Earth & Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 4.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China 5.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa 000000, Macau, Peoples R China 6.Johannes Gutenberg Univ Mainz, Inst Inorgan & Analyt Chem, Duesbergweg 10-14, D-55128 Mainz, Germany 7.Natl Univ Ireland Galway, Ctr Climate & Air Pollut Studies, Ryan Inst, Univ Rd, Galway H91 CF50, Ireland 8.Chinese Acad Sci, Inst Atmospher Phys, RCE TEA, Beijing 100029, Peoples R China 9.PSI, Lab Atmospher Chem, CH-5232 Villigen, Switzerland 10.Univ Groningen, Ctr Isotope Res CIO, ESRIG, NL-9747 AG Groningen, Netherlands |
| 推荐引用方式 GB/T 7714 | Chen, Yang,Chen, Qi,Huang, Ru-Jin,et al. Brown Carbon Aerosol in Urban Xi'an, Northwest China: The Composition and Light Absorption Properties[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(12):6825-6833. |
| APA | Chen, Yang.,Chen, Qi.,Huang, Ru-Jin.,Yang, Lu.,Cao, Junji.,...&Duan, Jing.(2018).Brown Carbon Aerosol in Urban Xi'an, Northwest China: The Composition and Light Absorption Properties.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(12),6825-6833. |
| MLA | Chen, Yang,et al."Brown Carbon Aerosol in Urban Xi'an, Northwest China: The Composition and Light Absorption Properties".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.12(2018):6825-6833. |
入库方式： OAI收割
来源：地球环境研究所
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