| Literature DB >> 23896680 |
Bernadette C Proemse1, Bernhard Mayer, Mark E Fenn, Christopher S Ross.
Abstract
Industrial nitrogen (N) emissions in the Athabasca oil sands region (AOSR), Alberta, Canada, affect nitrate (NO3) and ammonium (NH4) deposition rates in close vicinity of industrial emitters. NO3-N and NH4-N open field and throughfall deposition rates were determined at various sites between 3 km and 113 km distance to the main oil sand operations between May 2008 and May 2009. NO3 and NH4 were analyzed for δ(15)N-NO3, δ(18)O-NO3, Δ(17)O-NO3 and δ(15)N-NH4. Marked differences in the δ(18)O and Δ(17)O values between industrial emissions and background deposition allowed for the estimation of minimum industrial contributions to atmospheric NO3 deposition. δ(15)N-NH4 values also allowed for estimates of industrial contributions to atmospheric NH4 deposition. Results revealed that particularly sites within ~30 km radius from the main oil sands developments are significantly affected by industrial contributions to atmospheric NO3 and NH4 deposition.Entities:
Keywords: Alberta; Athabasca; Atmospheric nitrate; Deposition; Nitrogen isotopes; Oil sands; Oxygen isotopes; Oxygen-17; Throughfall
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Year: 2013 PMID： 23896680 DOI： 10.1016/j.envpol.2013.07.004
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071