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Size distribution and source of black carbon aerosol in urban Beijing during winter haze episodes
Wu, Yunfei1; Wang, Xiaojia1; Tao, Jun2; Huang, Rujin3; Tian, Ping4; Cao, Junji3; Zhang, Leiming5; Ho, Kin-Fai6; Han, Zhiwei1; Zhang, Renjian1
2017-06-30
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
卷号17期号:12页码:7965-7975
文章类型Article
摘要Black carbon (BC) has important impact on climate and environment due to its light absorption ability, which greatly depends on its physicochemical properties including morphology, size and mixing state. The size distribution of the refractory BC (rBC) was investigated in urban Beijing in the late winter of 2014, during which there were frequent haze events, through analysis of measurements obtained using a single-particle soot photometer (SP2). By assuming void-free rBC with a density of 1.8 g cm(-3), the mass of the rBC showed an approximately lognormal distribution as a function of the volume-equivalent diameter (VED), with a peak diameter of 213 nm. Larger VED values of the rBC were observed during polluted periods than on clean days, implying an alteration in the rBC sources, as the size distribution of the rBC from a certain source was relative stable, and VED of an individual rBC varied little once it was emitted into the atmosphere. The potential source contribution function analysis showed that air masses from the south to east of the observation site brought higher rBC loadings with more thick coatings and larger core sizes. The mean VED of the rBC presented a significant linear correlation with the number fraction of thickly coated rBC, extrapolating to be similar to 150 nm for the completely non-coated or thinly coated rBC. It was considered as the typical mean VED of the rBC from local traffic sources in this study. Local traffic was estimated to contribute 35 to 100% of the hourly rBC mass concentration with a mean of 59% during the campaign. Lower local traffic contributions were observed during polluted periods, suggesting increasing contributions from other sources (e.g., coal combustion and biomass burning) to the rBC. Thus, the heavy pollution in Beijing was greatly influenced by other sources in addition to the local traffic.
WOS标题词Science & Technology ; Physical Sciences
DOI10.5194/acp-17-7965-2017
关键词[WOS]PARTICLE SOOT PHOTOMETER ; LASER-INDUCED INCANDESCENCE ; QINGHAI-TIBETAN PLATEAU ; MIXING STATE ; LIGHT-ABSORPTION ; SOURCE APPORTIONMENT ; OPTICAL-PROPERTIES ; ELEMENTAL CARBON ; CHINA ; POLLUTION
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000404771300005
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5439
专题粉尘与环境研究室
作者单位1.Chinese Acad Sci, Inst Atmospher Phys, CAS Key Lab Reg Climate Environm Temperate East A, Beijing, Peoples R China
2.Minist Environm Protect, South China Inst Environm Sci, Guangzhou, Guangdong, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, CAS Key Lab Aerosol Chem & Phys, Xian, Peoples R China
4.Beijing Weather Modificat Off, Beijing, Peoples R China
5.Environm & Climate Change Canada, Air Qual Res Div, Sci & Technol Branch, Toronto, ON, Canada
6.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China
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Wu, Yunfei,Wang, Xiaojia,Tao, Jun,et al. Size distribution and source of black carbon aerosol in urban Beijing during winter haze episodes[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(12):7965-7975.
APA Wu, Yunfei.,Wang, Xiaojia.,Tao, Jun.,Huang, Rujin.,Tian, Ping.,...&Zhang, Renjian.(2017).Size distribution and source of black carbon aerosol in urban Beijing during winter haze episodes.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(12),7965-7975.
MLA Wu, Yunfei,et al."Size distribution and source of black carbon aerosol in urban Beijing during winter haze episodes".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.12(2017):7965-7975.
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