Hazardous air pollutants from mobile sources in the Metropolitan Area of Mexico City.
Environmental agencies are currently in the process of implementing a new air management program, which includes the improvement of fuel quality. In this work, exhaust emissions data and estimated relative risk for various fuels testing in-use vehicles, equipped with three different exhaust emission control technologies, are presented. Aromatics, sulfur, and olefins contents; type of oxygenated compound; and Reid vapor pressure were varied. The aim also includes calculating the ozone (O3) forming potential and a relative cancer risk of emissions from current and formulated gasoline blends in Mexico. The proposed gasoline decreases carbon monoxide, total hydrocarbons (THC), and nitrogen oxides emissions by 18 and 14%, respectively, when compared with gasoline sold in the rest of the country and within ozone nonattainment metropolitan areas in Mexico, respectively.
Schifter
Isaac
I
Mexican Institute of Petroleum, Environmental Studies Division, Mexico City, Mexico. ishifter@imp.mx
Díaz
Luis
L
López-Salinas
Esteban
E
D000393:Air Pollutants / Q000009:adverse effects / Q000032:analysis*; D000397:Air Pollution / Q000517:prevention & control; D000475:Alkenes / Q000032:analysis; D002248:Carbon Monoxide / Q000032:analysis; D002947:Cities; D000431:Ethanol / Q000032:analysis; D005742:Gasoline / Q000032:analysis*; D006801:Humans; D006841:Hydrocarbons, Aromatic / Q000032:analysis; D008738:Methyl Ethers / Q000032:analysis; D008800:Mexico; D018986:Motor Vehicles / Q000145:classification; D009369:Neoplasms / Q000139:chemically induced; D009589:Nitrogen Oxides / Q000032:analysis; D010126:Ozone / Q000032:analysis; D018570:Risk Assessment; D013455:Sulfur / Q000032:analysis; D001335:Vehicle Emissions / Q000009:adverse effects / Q000032:analysis*
D000393:Air Pollutants; D000475:Alkenes; D005742:Gasoline; D006841:Hydrocarbons, Aromatic; D008738:Methyl Ethers; D009589:Nitrogen Oxides; D001335:Vehicle Emissions; C043243:methyl tert-butyl ether; D000431:Ethanol; D010126:Ozone; D013455:Sulfur; D002248:Carbon Monoxide