DOI: 10.1016/j.atmosres.2018.09.011
Scopus记录号: 2-s2.0-85054160849
论文题名: Sources and spatial distribution of PM2.5-bound polycyclic aromatic hydrocarbons in Zhengzhou in 2016
作者: Li Q. ; Jiang N. ; Yu X. ; Dong Z. ; Duan S. ; Zhang L. ; Zhang R.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 216 起始页码: 65
结束页码: 75
语种: 英语
英文关键词: Diagnostic ratios
; Health risk
; PAHs
; PM2.5
; PMF
Scopus关键词: Air quality
; Air quality standards
; Barium compounds
; Biomass
; Coal
; Coal combustion
; Coal industry
; Factorization
; Health risks
; Hydrocarbons
; Mineral oils
; Petroleum analysis
; Urban growth
; Atmospheric polycyclic aromatic hydrocarbons
; Diagnostic ratios
; National ambient air quality standards
; PM2.5
; PM2.5 concentration
; Positive Matrix Factorization
; Seasonal variation
; Spatial characteristics
; Polycyclic aromatic hydrocarbons
英文摘要: Atmospheric polycyclic aromatic hydrocarbons (PAHs) in PM2.5 were analyzed in 2016 at five representative sites in Zhengzhou, China to determine their seasonal and spatial characteristics. The annual PM2.5 concentration of all sites (114 ± 85 μg/m3) was 2.3 times higher than the Chinese National Ambient Air Quality Standard (NAAQS) (annual standard:35 μg/m3). The total PAH level was highest at traffic site (46.2 ± 21.4 ng/m3), followed by urban center site (40.1 ± 18.7 ng/m3), industrial site (38.8 ± 17.2 ng/m3), urban site (37.8 ± 10.3 ng/m3) and background site (34.0 ± 19.4 ng/m3) with an annual concentration of 39.1 ± 17.6 ng/m3 for all sites. The seasonal variation was in the order of winter > autumn > spring > summer. Among 16 PAHs, BbF, Ind, BkF, Chry, and BghiP were more abundant species with an integral trend of 5–6 rings > 4 rings > 2–3 rings. The annual BaP concentration (2.1 ng/m3) exceeded the limit of the annual average BaP (1.0 ng/m3) given by the NAAQS, and the BaPeq concentration was at a high level, which indicated a severe health risk of PAHs. The incremental lifetime cancer risk results showed that the risk level was acceptable level in the study area. Diagnostic ratios analysis demonstrated that PAHs in the study area were produced by the common outcome of the fossil fuel, petroleum, biomass, and coal combustions. Four sources determined by positive matrix factorization were coal combustion, motor vehicles, biomass burning, and industry, which respectively accounted for 37.9%, 26.9%, 19.7% and 15.4% of the annual total PAHs in Zhengzhou. The contribution of motor vehicles/aircraft fuel source was the highest at the traffic site (29.7%) and the contribution of industry was higher at industrial site (21.4%). The contribution of biomass burning in autumn was greater than that in other seasons because open burning of straws increased during harvest season while the contribution of coal combustion increased in winter due to concentrated heating. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109039
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Research Institute of Environmental Science, College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
Recommended Citation:
Li Q.,Jiang N.,Yu X.,et al. Sources and spatial distribution of PM2.5-bound polycyclic aromatic hydrocarbons in Zhengzhou in 2016[J]. Atmospheric Research,2019-01-01,216