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Analysis of atmospheric ammonia concentration from four sites in Quebec City region over 2010–2013.

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Larios, Araceli Dalila; Chebana, Fateh; Godbout, Stéphane; Brar, Satinder Kaur; Valera, Fabian; Palacios, Joahnn H.; Avalos Ramírez, Antonio; Saldoval-Salas, Fabiola; Larouche, Jean-Pierre; Medina-Hernández, David; Potvin, Lise (2018). Analysis of atmospheric ammonia concentration from four sites in Quebec City region over 2010–2013. Atmospheric Pollution Research , vol. 9 , nº 3. p. 476-482. DOI: 10.1016/j.apr.2017.11.001.

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Résumé

This study presents an analysis of atmospheric ammonia (NH₃) concentration from four different sites located in the Portneuf municipality and Quebec City over 2010–2013 years. The determination of NH₃ concentration was performed using passive samplers. Seasonal Mann-Kendall test at 5% significance level was used to analyse the trend in each of the sites. Results showed slight increases and decreases in NH₃ concentration, but the trend was not significant (α = 0.05) from 2010 to 2013 in all the evaluated sites. The annual average concentration of the evaluated sites fluctuated from 0.35 to 17.51 μg/m³. Thus, due to that the annual average concentration of NH₃ in sites 1 to 3 was higher than 1 μg/m³, which is considered as the critical value for protecting of sensible vegetation close to emission source of NH₃. It is suggested to extend the measurements for a longer period and increase the number of sites in order to follow the trends of atmospheric NH₃ concentration at local and regional scale and have information about the NH₃ concentration trend in Quebec.

Type de document: Article
Mots-clés libres: ammonia concentration; trend analysis; Seasonal Mann-Kendall test; critical level (CLE)
Centre: Centre Eau Terre Environnement
Date de dépôt: 12 févr. 2018 20:53
Dernière modification: 08 juin 2018 19:41
URI: http://espace.inrs.ca/id/eprint/6771

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