DOI: 10.1016/j.atmosenv.2019.117164
论文题名: In situ continuous observation of hourly elements in PM2.5 in urban beijing, China: Occurrence levels, temporal variation, potential source regions and health risks
作者: Cui Y. ; Ji D. ; He J. ; Kong S. ; Wang Y.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 222 语种: 英语
英文关键词: Air quality
; Barium
; Chemical elements
; Dust
; Health
; Heavy metals
; Manganese
; Mercury (metal)
; Nickel
; Risk assessment
; Risk perception
; Storms
; Beijing
; Continuous observation
; National ambient air quality standards
; PM2.5
; Potential source regions
; Source analysis
; Temporal variation
; World Health Organization
; Health risks
; arsenic
; barium ion
; calcium ion
; chromium
; cuprous ion
; element
; iron
; lead
; manganese
; mercury
; nickel
; potassium ion
; selenium
; zinc ion
; chemical element
; health risk
; in situ measurement
; observational method
; particulate matter
; pollutant source
; temporal variation
; urban pollution
; World Health Organization
; air pollutant
; ambient air
; Article
; autumn
; controlled study
; environmental temperature
; health hazard
; human
; limit of detection
; particulate matter
; priority journal
; seasonal variation
; spring
; summer
; wind speed
; winter
; World Health Organization
; Beijing [China]
; China
; Shandong
学科: Beijing
; Elements
; Health risks
; PM2.5
; Source analyses
; Temporal variation
中文摘要: Elements in fine particles (PM2.5) have adverse impacts on ecosystems and human health. Using an online multi-heavy metal analyzer, one-year continuous hourly measurements were performed for thirteen elements, namely, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Ba, Hg and Pb, from June 1, 2016, to May 31, 2017, in urban Beijing. The total concentrations of 13 elements were in the range of 114–136,574 ng/m3, with a mean concentration of 2534 ± 5563 ng/m3. The four dominated elements were K (900 ± 3554 ng/m3), Fe (738 ± 1485 ng/m3), Ca (493 ± 1473 ng/m3) and Zn (174 ± 189 ng/m3). The annual mean concentrations of Cr and As exceeded the guideline values of the World Health Organization and the Chinese National Ambient Air Quality Standard. In the absence of firework-burning episodes and heavy dust storms, K, Cr, Mn, Cu, Zn, As, Se, Hg and Pb showed higher concentrations in autumn and winter, whereas lower concentrations were observed in spring and summer. The higher concentrations of Ca, Fe, and Ba observed in spring were associated with the frequent occurrence of dust. All elements showed higher concentrations on weekends than on weekdays. The diel patterns of Fe, Ba, Ca, Cu, Zn, Ni and Mn showed higher concentrations during peak traffic periods, whereas those of As, Cr, Hg, K, Pb and Se showed lower concentrations in the daytime but higher ones in the nighttime. The potential source function (PSCF) identified that neighboring provinces were the major source regions for most elements, whereas Ni mainly came from Shandong and the eastern ocean in spring and summer. Health risks of PM2.5 elements (Cr, Mn, Ni, As, Ba and Pb) via the inhalation pathway were estimated. Mn (As) and As posed the highest noncarcinogenic and carcinogenic risks to human health, respectively. Overall, this work can provide more detailed information on the characteristics of elements for the science community and be used in other receptor modelling and health risk assessment studies. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160602
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Department of Chemical and Environmental Engineering, International Doctoral Innovation Centre, University of Nottingham Ningbo China, Ningbo, China; Department of Atmospheric Sciences, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Science, Xiamen, 361021, China
Recommended Citation:
Cui Y.,Ji D.,He J.,et al. In situ continuous observation of hourly elements in PM2.5 in urban beijing, China: Occurrence levels, temporal variation, potential source regions and health risks[J]. Atmospheric Environment,2020-01-01,222