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A multi-isotope approach for assessing industrial contributions to atmospheric nitrogen deposition in the Athabasca oil sands region in Alberta, CanadaAuthor(s): Bernadette C. Proemse; Bernhard Mayer; Mark E. Fenn; Christopher S. Ross
Source: Environmental Pollution. 182: 80-91
Publication Series: Scientific Journal (JRNL)
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DescriptionIndustrial 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 δ15N-NO3, δ18O-NO3, Δ17O-NO3 and δ15N-NH4. Marked differences in the δ18O and Δ17O values between industrial emissions and background deposition allowed for the estimation of minimum industrial contributions to atmospheric NO3 deposition. δ15N-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.
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CitationProemse, Bernadette C.; Mayer, Bernhard; Fenn, Mark E.; Ross, Chistopher S. 2013. A multi-isotope approach for assessing industrial contributions to atmospheric nitrogen deposition in the Athabasca oil sands region in Alberta, Canada. Environ. Pollut. 182: 80-91.
KeywordsAtmospheric nitrate, Nitrogen isotopes, Oxygen isotopes, Deposition, Throughfall, Oil sands, Oxygen-17, Athabasca, Alberta
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