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ACP | Articles | Volume 18, issue 14
Atmos. Chem. Phys., 18, 10373–10389, 2018
https://doi.org/10.5194/acp-18-10373-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Chem. Phys., 18, 10373–10389, 2018
https://doi.org/10.5194/acp-18-10373-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 20 Jul 2018

Research article | 20 Jul 2018

The Δ17O and δ18O values of atmospheric nitrates simultaneously collected downwind of anthropogenic sources – implications for polluted air masses

Martine M. Savard et al.

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Cited articles

Alexander, B., Hastings, M. G., Allman, D. J., Dachs, J., Thornton, J. A., and Kunasek, S. A.: Quantifying atmospheric nitrate formation pathways based on a global model of the oxygen isotopic composition (Δ17O) of atmospheric nitrate, Atmos. Chem. Phys., 9, 5043–5056, https://doi.org/10.5194/acp-9-5043-2009, 2009. 
Anlauf, K. G., Fellin, P., Wiebe, H. A., Schiff, H. I., Mackay, G. I., Braman, R. S., and Gilbert, R.: A comparison of three methods for measurement of atmospheric nitric acid and aerosol nitrate and ammonium, Atmos. Environ., 19, 325–333, https://doi.org/10.1016/0004-6981(85)90100-3, 1985. 
Anlauf, K. G., Wiebe, H. A., and Fellin, P.: Characterization of Several Integrative Sampling Methods for Nitric Acid, Sulphur Dioxide and Atmospheric Particles, JAPCA J. Air Waste Ma., 36, 715–723, https://doi.org/10.1080/00022470.1986.10466107, 1986. 
Appel, B. R., Tokiwa, Y., and Haik, M.: Sampling of nitrates in ambient air, Atmos. Environ., 15, 283–289, https://doi.org/10.1016/0004-6981(81)90029-9, 1981. 
Benedict, K. B., Carrico, C. M., Kreidenweis, S. M., Schichtel, B., Malm, W. C., and Collett Jr., J. L.: A seasonal nitrogen deposition budget for Rocky Mountain National Park, Ecol. Appl., 23, 1156–1169, https://doi.org/10.1890/12-1624.1, 2013. 
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Short summary
Improving air quality requires understanding of the atmospheric processes transforming nitrous oxides emitted by human activities into nitrates, an N form that may degrade natural ecosystems. Isotopes (∆17O, δ18O) are characterized in separate wet, particulate and gaseous nitrates for the first time. The gas ranges are distinct from those of the other nitrates, and the plume dynamics emerge as crucial in interpreting the results, which unravel key processes behind the distribution of nitrates.
Improving air quality requires understanding of the atmospheric processes transforming nitrous...
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