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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
Source PublicationENVIRONMENTAL RESEARCH LETTERS
Volume12Issue:4
SubtypeArticle
AbstractThe 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.
KeywordBlack Carbon Mixing State Mass Absorption Cross-section Photochemical Oxidation Light Absorption
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1088/1748-9326/aa64ea
WOS KeywordAEROSOL CHARACTERIZATION ; SIZE DISTRIBUTION ; SURFACE OZONE ; BROWN CARBON ; PARTICLES ; SOOT ; XIAN ; UK ; LONDON ; WINTER
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000398370600001
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5493
Collection粉尘与环境研究室
Affiliation1.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
Recommended Citation
GB/T 7714
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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