DOI: 10.1016/j.atmosenv.2020.117302
论文题名: Contrasts in chemical composition and oxidative potential in PM10 near flares in oil extraction and refining areas in Ecuador
作者: Barraza F. ; Uzu G. ; Jaffrezo J.-L. ; Schreck E. ; Budzinski H. ; Le Menach K. ; Dévier M.-H. ; Guyard H. ; Calas A. ; Perez M.-I. ; Villacreces L.-A. ; Maurice L.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 223 语种: 英语
英文关键词: Air quality
; Alcohols
; Extraction
; Glucose
; Metal refining
; Organic carbon
; Petroleum refining
; Polyols
; Thermoelectric power plants
; Trace elements
; Chemical compositions
; Ecuador
; Oil extraction
; Oil refining
; Oxidative potential
; PM10
; Trace metal element
; Polycyclic aromatic hydrocarbons
; arabinitol
; carbon
; galactosan
; glucose
; levoglucosan
; mannitol
; mannosan
; monosaccharide
; organic carbon
; polycyclic aromatic compound
; sorbitol
; unclassified drug
; atmospheric pollution
; chemical composition
; extraction method
; oxidation
; PAH
; particulate matter
; reactive oxygen species
; air quality
; Article
; chemical composition
; Ecuador
; oil industry
; oxidation reduction potential
; particulate matter
; priority journal
; Amazonia
; Ecuador
; Esmeraldas
; Pacific Coast
; Pacific Ocean
; Pacific Ocean (North)
学科: Air quality
; Chemical composition
; Ecuador
; Oil extraction
; Oil refining
; Oxidative potential
; PAHs
; PM10
; Trace metal elements
中文摘要: For decades, oil extraction in rural sites in the North Amazon Region (NAR) in Ecuador, have generated mixtures of potentially toxic compounds, such as polycyclic aromatic hydrocarbons (PAHs) and metal(loid)s. The main national refinery and the thermal power plant located in Esmeraldas, on the North Pacific Coast (NPC), are also considered as important sources of air contamination. Particulate matter (PM10) emitted at both sites could induce the formation of reactive oxygen species (ROS) in the lungs upon inhalation and could be associated with respiratory diseases. In this study, PM10 mass composition was monitored over a two-year period in both regions: NAR (close to oil platforms and open flares) and NPC (in a public school close to the refinery). PM10 composition was assessed in terms of metal(loid)s, organic and elementary carbon (OC, EC), monosaccharides (levoglucosan, mannosan, galactosan), glucose, polyols (sorbitol, mannitol, arabitol), water soluble ions and polycyclic aromatic compounds (PAHs, oxy-PAHs and nitro-PAHs). Additionally, three complementary biochemical and acellular tests were performed to evaluate the oxidative potential (OP). Results show that the PM10 mass and elemental concentrations were higher in NPC than in NAR. Barium and Mo concentrations, commonly used in oil operations, were up to 1000-fold higher than values recorded in other regions of Ecuador. OC/EC ratios and polyols concentrations were higher in NAR than in NPC, indicating a larger biogenic contribution to the PM mass in this region. In NAR, the main sources associated with ROS burden were biogenic emissions and oil production, as indicated by positive correlations between OP, sugars, Ba, some PAHs and oxy-PAHs. On the other hand, in NPC, associations between NH4+, Ba, As and Ni imply that oil refining and industrial activities are the main contributors to the OP of PM10. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160954
Appears in Collections: 气候变化与战略
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作者单位: Géosciences Environnement Toulouse (GET), Observatoire Midi Pyrénées, Université de Toulouse, CNRS, IRD, Toulouse, 31400, France; Université Grenoble Alpes, IRD, CNRS, Grenoble INP, IGE, Grenoble, 38058, France; Universidad Mayor San Andres, Laboratorio de Física de la atmosfera, La Paz, Bolivia; University of Bordeaux/CNRS, EPOC UMR 5805, LPTC Team, Talence, 33405, France; Empresa Pública de Hidrocarburos del Ecuador EP PETROECUADOR, Área de Gestión Ambiental, P.O Box 17-11-5007/17-11-5008, Quito, Ecuador; Universidad Andina Simón Bolívar, Área de Salud, P.O. Box 17-12-569, Quito, Ecuador
Recommended Citation:
Barraza F.,Uzu G.,Jaffrezo J.-L.,et al. Contrasts in chemical composition and oxidative potential in PM10 near flares in oil extraction and refining areas in Ecuador[J]. Atmospheric Environment,2020-01-01,223