Abstract

GARFIAS VAZQUEZ, Margarita; AUDRY SANCHEZ, Javier  and  GARFIAS Y AYALA, Francisco Javier. Ozone Trend Analysis at Pedregal Station in the Metropolitan Area of Mexico City. J. Mex. Chem. Soc [online]. 2005, vol.49, n.4, pp.322-323. ISSN 1870-249X.

Pedregal Station is located in a residential area in the southwest portion of Mexico City, where the worst ozone episodes are registered. Three models for forecasting ozone are analyzed based on the 19 mean semester maximum values of daily ozone registered at Pedregal Station. The logarithm model seems to fit best the available data. Its use suggests that near 10 years have to elapse fom July 2005, before air quality is recovered. Additional control measures are suggested, such as, doubling concentration of MTBE, reducing gasoline Reid Vapor Pressure from 7.5 to 7 psia and increasing efficiency and cover of the public transport system, but reinforcing the present control policies.

Keywords : Forecasting ozone; Pedregal Station; MTBE; Reid Vapor Pressure.

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