Effects of photochemical oxidation on the mixing state and light absorption of black carbon in the urban atmosphere of China

doi:10.1088/1748-9326/aa64ea

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Effects of photochemical oxidation on the mixing state and light absorption of black carbon in the urban atmosphere of China
	Ni, Haiyan 6; Zhu, Chongshu 5,6; Huang, Rujin 2,5,6; Wang, Qiyuan 5,6; Shen, Zhenxing 4; Wang, Meng 6; Dai, Wenting 5,6; Han, Yongming 1,5,6; Zhang, Ningning 5,6; Prevot, Andre S. H.3,6
刊名	ENVIRONMENTAL RESEARCH LETTERS
	2017-04-01
卷号	12 期号:4
关键词	Black Carbon Mixing State Mass Absorption Cross-section Photochemical Oxidation Light Absorption
DOI	10.1088/1748-9326/aa64ea
文献子类	Article
英文摘要	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.
WOS关键词	AEROSOL CHARACTERIZATION ; SIZE DISTRIBUTION ; SURFACE OZONE ; BROWN CARBON ; PARTICLES ; SOOT ; XIAN ; UK ; LONDON ; WINTER
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000398370600001
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5493]
专题	地球环境研究所_粉尘与环境研究室
作者单位	1.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 2.Xiamen Huaxia Univ, Ctr Atmospher & Marine Sci, Xiamen 361024, Peoples R China 3.PSI, Lab Atmospher Chem, CH-5232 Villigen, Switzerland 4.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 6.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Ni, Haiyan,Zhu, Chongshu,Huang, Rujin,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	Ni, Haiyan.,Zhu, Chongshu.,Huang, Rujin.,Wang, Qiyuan.,Shen, Zhenxing.,...&Tie, Xuexi.(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	Ni, Haiyan,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).