DOI: 10.1016/j.atmosenv.2015.03.010
Scopus记录号: 2-s2.0-84949532406
论文题名: Seasonal variations of water soluble composition (WSOC, Hulis and WSIIs) in PM1 and its implications on haze pollution in urban Shanghai, China
作者: Qiao T ; , Zhao M ; , Xiu G ; , Yu J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123 起始页码: 306
结束页码: 314
语种: 英语
英文关键词: Haze episodes
; Humic like substances (Hulis)
; Liquid water content (LWC)
; PM1
; Water soluble inorganic ions (WSIIs)
; Water soluble organic carbon (WSOC)
Scopus关键词: Aerosols
; Carbon
; Liquids
; Nitrates
; Organic carbon
; Pollution
; Sulfur compounds
; Haze episodes
; Humic-like substances
; Liquid water content
; Water soluble inorganic ions
; Water-soluble organic carbon
; Water pollution
; ion
; nitrate
; organic carbon
; sulfate
; aerosol
; atmospheric pollution
; chemical pollutant
; haze
; humic substance
; hygroscopicity
; ionic composition
; organic carbon
; seasonal variation
; urban pollution
; water content
; aerosol
; Article
; autumn
; chemical composition
; China
; haze
; particulate matter
; priority journal
; seasonal variation
; spring
; summer
; urban area
; water content
; water pollution
; China
; Shanghai
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: A year-long PM1 samples were collected at ECUST campus from April 2013 to February 2014 in urban Shanghai, China. Annual PM1 was (49.8 ± 31.8) μgm-3, comprising of water soluble organic carbon (WSOC), humic-like substances-carbon (Hulis-C), total water soluble inorganic ions (WSIIs) and liquid water content (LWC). Corresponding values were (5.51 ± 3.72) μgm-3, (2.20 ± 1.71) μgm-3, (22.52 ± 15.22) μgm-3 and (19.0 ± 19.2) μgm-3, respectively. Seasonal variation of PM1 was winter > spring > autumn > summer, while WSOC, Hulis-C, total WSIIs and LWC were highest in winter, with insignificant differences between spring, summer and autumn. Hulis-C and WSOC in PM1 on the serious haze day were found to be 4.4 and 2.5 times higher than those on the clear days, implying that Hulis might be very important for haze pollution. Among total WSIIs, sulfate was more abundant than nitrate on clear days while nitrate eventually surpassed sulfate in haze episodes. LWC in aerosol was significantly negative correlated with visibility and had strong relationship with nitrate and sulfate. It should be noted that LWC is four times sensitive to nitrate than sulfate, hence higher nitrate on haze days in Shanghai might facilitate the hygroscopic growth of aerosol. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81356
Appears in Collections: 气候变化事实与影响
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作者单位: State Environmental Protection Key Laboratory of Risk Assessment and Control on Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology (ECUST), Shanghai, China; Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
Recommended Citation:
Qiao T,, Zhao M,, Xiu G,et al. Seasonal variations of water soluble composition (WSOC, Hulis and WSIIs) in PM1 and its implications on haze pollution in urban Shanghai, China[J]. Atmospheric Environment,2015-01-01,123