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Abstract:

We analyse the air quality data measured at a green area of Buenos Aires City (Argentina) during 38 days in winter. We study the relationships between ambient concentrations of nitric oxide (NO), nitrogen dioxide (NO2), ozone (O3) and nitrogen oxides (NOx=NO+NO2). The variation of the level of oxidant (OX=O3+NO2) with the NOx is obtained. It can be seen that the level of OX at a given location is made up of two contributions: one independent and another dependent on the NOx concentration. The first one can be considered as a regional contribution, equivalent to the background O3 concentration and the second one as a local contribution that depends on the level of primary pollution. Local oxidant sources may include direct NO2 emissions, the reaction of NO with O2 at high-NOx levels, and the emission of species that promote the conversion of NO to NO2. The final category of emissions may include the nitrous acid (HONO) that is emitted directly in vehicle exhaust. Finally, we present a diurnal variation of the local as well as regional contributions and the dependence of the last one on wind direction. © 2005 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Analysis of NO, NO2, O3 and NOx concentrations measured at a green area of Buenos Aires City during wintertime
Autor:Mazzeo, N.A.; Venegas, L.E.; Choren, H.
Filiación:National Scientific and Technological Research Council, University of Buenos Aires, Ciudad Universitaria Pab. 2, 1428-Buenos Aires, Argentina
Department of Atmospheric and Oceanic Sciences, Faculty of Sciences, University of Buenos Aires, 1428-Buenos Aires, Argentina
Department of Chemical Engineering, Avellaneda Regional Faculty, National Technological University, Av. Mitre 750, 1870-Avellaneda, Buenos Aires, Argentina
Palabras clave:Local pollution; Nitrogen oxides; Oxidant; Ozone; Regional pollution; Urban pollution; Air pollution control; Concentration (process); Exhaust gases; Nitrogen oxides; Ozone; Air quality data; Nitric oxide (NO); Nitrogen dioxide; Nitrous acids (HONO); Air quality; nitrogen dioxide; nitrogen oxide; oxide; oxidizing agent; atmospheric pollution; air pollution control; air quality; ambient air; article; chemical analysis; dispersion; priority journal; Argentina; Buenos Aires [Argentina]; South America; Western Hemisphere; World
Año:2005
Volumen:39
Número:17
Página de inicio:3055
Página de fin:3068
DOI: http://dx.doi.org/10.1016/j.atmosenv.2005.01.029
Título revista:Atmospheric Environment
Título revista abreviado:Atmos. Environ.
ISSN:13522310
CODEN:AENVE
CAS:nitrogen dioxide, 10102-44-0; nitrogen oxide, 11104-93-1; oxide, 16833-27-5
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13522310_v39_n17_p3055_Mazzeo

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Citas:

---------- APA ----------
Mazzeo, N.A., Venegas, L.E. & Choren, H. (2005) . Analysis of NO, NO2, O3 and NOx concentrations measured at a green area of Buenos Aires City during wintertime. Atmospheric Environment, 39(17), 3055-3068.
http://dx.doi.org/10.1016/j.atmosenv.2005.01.029
---------- CHICAGO ----------
Mazzeo, N.A., Venegas, L.E., Choren, H. "Analysis of NO, NO2, O3 and NOx concentrations measured at a green area of Buenos Aires City during wintertime" . Atmospheric Environment 39, no. 17 (2005) : 3055-3068.
http://dx.doi.org/10.1016/j.atmosenv.2005.01.029
---------- MLA ----------
Mazzeo, N.A., Venegas, L.E., Choren, H. "Analysis of NO, NO2, O3 and NOx concentrations measured at a green area of Buenos Aires City during wintertime" . Atmospheric Environment, vol. 39, no. 17, 2005, pp. 3055-3068.
http://dx.doi.org/10.1016/j.atmosenv.2005.01.029
---------- VANCOUVER ----------
Mazzeo, N.A., Venegas, L.E., Choren, H. Analysis of NO, NO2, O3 and NOx concentrations measured at a green area of Buenos Aires City during wintertime. Atmos. Environ. 2005;39(17):3055-3068.
http://dx.doi.org/10.1016/j.atmosenv.2005.01.029