2014 |
Toro, R; Canales, M; Flocchini, R; Morales, R G E; Leiva, M A Urban Atmospheric Ammonia in Santiago City, Chile Artículo de revista Aerosol and Air Quality Research, 14 (1), pp. 33-44, 2014, ISSN: 1680-8584. Resumen | Enlaces | BibTeX | Etiquetas: air ammonia ammonia, chemistry, chile, emissions, environmental chemistry, gaseous new-york, nh3, nitrogen, particulate passive pm2.5, quality, samplers, santiago, secondary sulfate, uncertainty @article{toro2014urban, title = {Urban Atmospheric Ammonia in Santiago City, Chile}, author = { R. Toro and M. Canales and R. Flocchini and R.G.E. Morales and M.A. Leiva}, url = {/brokenurl#<Go to ISI>://WOS:000331789600004}, doi = {10.4209/aaqr.2012.07.0189}, issn = {1680-8584}, year = {2014}, date = {2014-01-01}, journal = {Aerosol and Air Quality Research}, volume = {14}, number = {1}, pages = {33-44}, abstract = {To improve the current understanding of the ammonia distribution in the major urban area of Chile, measurements of atmospheric NH3 were collected in Santiago during three sampling periods (25 April to 27 May, 11 to 26 June and 27 June to 31 July 2008). Additionally, air quality and meteorological data as well as NH4+, NO3-}, keywords = {air ammonia ammonia, chemistry, chile, emissions, environmental chemistry, gaseous new-york, nh3, nitrogen, particulate passive pm2.5, quality, samplers, santiago, secondary sulfate, uncertainty}, pubstate = {published}, tppubtype = {article} } To improve the current understanding of the ammonia distribution in the major urban area of Chile, measurements of atmospheric NH3 were collected in Santiago during three sampling periods (25 April to 27 May, 11 to 26 June and 27 June to 31 July 2008). Additionally, air quality and meteorological data as well as NH4+, NO3- |
Leiva, M A; Toro, R; Morales, R G E; Rios, M A; González, M R A Study of Water-Soluble Inorganic Ions in Size-Segregated Aerosols in Atmospheric Pollution Episode Artículo de revista International Journal of Environmental Science and Technology, 11 (2), pp. 437-448, 2014, ISSN: 1735-1472. Resumen | Enlaces | BibTeX | Etiquetas: air ammonia, ammonium, distribution, distributions, emissions, environmental chemistry, nitrate, particle-size particles, particulate pm2.5, secondary sulfate @article{RN220, title = {A Study of Water-Soluble Inorganic Ions in Size-Segregated Aerosols in Atmospheric Pollution Episode}, author = { M.A. Leiva and R. Toro and R.G.E. Morales and M.A. Rios and M.R. Gonz\'{a}lez}, url = {/brokenurl#<Go to ISI>://WOS:000331804300019}, doi = {10.1007/s13762-013-0221-4}, issn = {1735-1472}, year = {2014}, date = {2014-01-01}, journal = {International Journal of Environmental Science and Technology}, volume = {11}, number = {2}, pages = {437-448}, abstract = {Particulate matter, the main pollutant in the atmospheric environment of the Santiago city in winter, was analyzed by means of the major water-soluble ionic species obtained under critical episodes of pollution in 2003. The particulate matter samples were collected using the Micro-Orifice uniform deposit impactors, with eight impactor stages connected in series, and the ionic species in particulate matter samples at each stage was analyzed by ion chromatography. While sulfate ion and nitrate ion showed bi-modal distributions, peaking in the fine and coarse mode, ammonium ion displayed a bi-modal size distribution, peaking in the fine and ultra fine mode. The equivalent concentration ratio of ammonium to sulfate was 2.03 +/- 0.09, indicating the complete neutralization of sulfuric acid by ammonia. The excess ammonium ion was associated to nitrate ion. The study of the size distribution of water-soluble inorganic ions in particulate matter supports the notion that secondary aerosols play a significant role in the urban atmosphere.}, keywords = {air ammonia, ammonium, distribution, distributions, emissions, environmental chemistry, nitrate, particle-size particles, particulate pm2.5, secondary sulfate}, pubstate = {published}, tppubtype = {article} } Particulate matter, the main pollutant in the atmospheric environment of the Santiago city in winter, was analyzed by means of the major water-soluble ionic species obtained under critical episodes of pollution in 2003. The particulate matter samples were collected using the Micro-Orifice uniform deposit impactors, with eight impactor stages connected in series, and the ionic species in particulate matter samples at each stage was analyzed by ion chromatography. While sulfate ion and nitrate ion showed bi-modal distributions, peaking in the fine and coarse mode, ammonium ion displayed a bi-modal size distribution, peaking in the fine and ultra fine mode. The equivalent concentration ratio of ammonium to sulfate was 2.03 +/- 0.09, indicating the complete neutralization of sulfuric acid by ammonia. The excess ammonium ion was associated to nitrate ion. The study of the size distribution of water-soluble inorganic ions in particulate matter supports the notion that secondary aerosols play a significant role in the urban atmosphere. |
2014 |
Urban Atmospheric Ammonia in Santiago City, Chile Artículo de revista Aerosol and Air Quality Research, 14 (1), pp. 33-44, 2014, ISSN: 1680-8584. |
A Study of Water-Soluble Inorganic Ions in Size-Segregated Aerosols in Atmospheric Pollution Episode Artículo de revista International Journal of Environmental Science and Technology, 11 (2), pp. 437-448, 2014, ISSN: 1735-1472. |