Airborne Petcoke Dust is a Major Source of Polycyclic Aromatic Hydrocarbons in the Athabasca Oil Sands Region

Environmental Science & Technology
Yifeng ZhangJonathan W Martin

Abstract

Oil sands mining has been linked to increasing atmospheric deposition of polycyclic aromatic hydrocarbons (PAHs) in the Athabasca oil sands region (AOSR), but known sources cannot explain the quantity of PAHs in environmental samples. PAHs were measured in living Sphagnum moss (24 sites, n = 68), in sectioned peat cores (4 sites, n = 161), and snow (7 sites, n = 19) from ombrotrophic bogs in the AOSR. Prospective source samples were also analyzed, including petroleum coke (petcoke, from both delayed and fluid coking), fine tailings, oil sands ore, and naturally exposed bitumen. Average PAH concentrations in near-field moss (199 ng/g, n = 11) were significantly higher (p = 0.035) than in far-field moss (118 ng/g, n = 13), and increasing temporal trends were detected in three peat cores collected closest to industrial activity. A chemical mass-balance model estimated that delayed petcoke was the major source of PAHs to living moss, and among three peat core the contribution to PAHs from delayed petcoke increased over time, accounting for 45-95% of PAHs in contemporary layers. Petcoke was also estimated to be a major source of vanadium, nickel, and molybdenum. Scanning electron microscopy with energy-dispersive X-ray spectroscopy ...Continue Reading

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Citations

Oct 18, 2016·Journal of Environmental Sciences (China)·Qingcai FengX Chris Le
Nov 2, 2016·Environmental Toxicology and Chemistry·Nikolas C ZetouniJonathan W Martin
Feb 10, 2017·Environmental Science & Technology·Jake A Nesbitt, Matthew B J Lindsay
Jun 1, 2017·Environmental Science & Technology·Gillian Mullan-BoudreauWilliam Shotyk
Aug 23, 2019·Journal of the Air & Waste Management Association·Samuel L AltshulerJohn G Watson
Jan 8, 2021·Environmental Pollution·Alexandra TevlinHayley Hung
Nov 25, 2020·Environmental Pollution·A BerthiaumeG Marson
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Apr 7, 2021·Environmental Pollution·Narumol JariyasopitRichard Park
Jun 18, 2021·The Science of the Total Environment·Abdulla Al MamunLeiming Zhang
Aug 13, 2021·Environmental Pollution·Christopher H MarvinGregg T Tomy
Nov 20, 2019·Environmental Science & Technology·Mark W DonnerWilliam Shotyk
Apr 30, 2017·Environmental Science & Technology·Carlos A ManzanoYifeng Zhang
Apr 30, 2017·Environmental Science & Technology·Doug CrumpJonathan W Martin
Dec 5, 2017·Environmental Science & Technology·Chelsea E WillisRodrigo Benjamin Rangel-Alvarado
Sep 22, 2021·Integrated Environmental Assessment and Management·Tim J ArciszewskiMonique G Dubé
Oct 23, 2021·Integrated Environmental Assessment and Management·Erin C HorbMonique G Dubé

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