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Effects of photochemical oxidation on the mixing state and light absorption of black carbon in the urban atmosphere of China
Wang, Qiyuan1,2; Huang, Rujin1,2,3; Zhao, Zhuzi1,2; Cao, Junji1,2,4; Ni, Haiyan1; Tie, Xuexi1,2; Zhu, Chongshu1,2; Shen, Zhenxing5; Wang, Meng1; Dai, Wenting1,2; Han, Yongming1,2,4; Zhang, Ningning1,2; Prevot, Andre S. H.1,6
2017-04-01
发表期刊ENVIRONMENTAL RESEARCH LETTERS
卷号12期号:4
文章类型Article
摘要The relationship between the refractory black carbon (rBC) aerosol mixing state and the atmospheric oxidation capacity was investigated to assess the possible influence of oxidants on the particles ' light absorption effects at two large cities in China. The number fraction of thicklycoated rBC particles (F-rBC) was positively correlated with a measure of the oxidant concentrations (OX = O-3 + NO2), indicating an enhancement of coated rBC particles under more oxidizing conditions. The slope of a linear regression of FrBC versus OX was 0.58% ppb(-1) for Beijing and 0.84% ppb(-1) for Xi ' an, and these relationships provide some insights into the evolution of rBC mixing state in relation to atmospheric oxidation processes. The mass absorption cross-section of rBC (MAC(rBC)) increased with OX during the daytime at Xi ' an, at a rate of 0.26 m(2) g(-1) ppb(-1), suggesting that more oxidizing conditions lead to internal mixing that enhances the lightabsorbing capacity of rBC particles. Understanding the dependence of the increasing rates of FrBC and MACrBC as a function of OX may lead to improvements of climate models that deal with the warming effects, but more studies in different cities and seasons are needed to gauge the broader implications of these findings.
关键词Black Carbon Mixing State Mass Absorption Cross-section Photochemical Oxidation Light Absorption
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1088/1748-9326/aa64ea
关键词[WOS]AEROSOL CHARACTERIZATION ; SIZE DISTRIBUTION ; SURFACE OZONE ; BROWN CARBON ; PARTICLES ; SOOT ; XIAN ; UK ; LONDON ; WINTER
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000398370600001
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文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5493
专题粉尘与环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
3.Xiamen Huaxia Univ, Ctr Atmospher & Marine Sci, Xiamen 361024, Peoples R China
4.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
5.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
6.PSI, Lab Atmospher Chem, CH-5232 Villigen, Switzerland
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Wang, Qiyuan,Huang, Rujin,Zhao, Zhuzi,et al. Effects of photochemical oxidation on the mixing state and light absorption of black carbon in the urban atmosphere of China[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(4).
APA Wang, Qiyuan.,Huang, Rujin.,Zhao, Zhuzi.,Cao, Junji.,Ni, Haiyan.,...&Prevot, Andre S. H..(2017).Effects of photochemical oxidation on the mixing state and light absorption of black carbon in the urban atmosphere of China.ENVIRONMENTAL RESEARCH LETTERS,12(4).
MLA Wang, Qiyuan,et al."Effects of photochemical oxidation on the mixing state and light absorption of black carbon in the urban atmosphere of China".ENVIRONMENTAL RESEARCH LETTERS 12.4(2017).
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