Abstract

ALCANTAR GONZALEZ, Fabiola Selene et al. ANALYSIS OF BENZENE CONTENT IN GASOLINES AND EMISSIONS ESTIMATION OF THIS COMPOUND TO THE ENVIRONMENT. Rev. Int. Contam. Ambient [online]. 2020, vol.36, n.2, pp.321-331.  Epub May 04, 2021. ISSN 0188-4999.  https://doi.org/10.20937/rica.53402.

Use of gasolines has a primordial interest in the ecological area, due to the emissions generated by combustion engines. In order to maintain a good air quality, it is necessary to control several gasoline quality parameters. Mexico City is a metropolis with 4 421 797 vehicles registered in 2014, therefore air quality problems are constantly present. Mexican gasoline quality specifications are regulated by Mexican Official Standard NOM-016-CRE-2016. Benzene, one of the compounds regulated by NOM-016-CRE-2016, is known to be a carcinogenic agent. Moreover, it is considered that the presence of benzene in gasoline can affect population health due to its volatility, which gets it to be in contact with the atmosphere and consequently with the population. In this work, the average amount of benzene present in gasoline commercialized in Mexico City was quantified by ASTM D5769-15. Results showed it was 0.361 % in Magna gasoline, whereas the average amount of benzene present in imported gasoline was 0.55 % and 1.28 % in the gasoline produced locally by PEMEX National Refineries System. This value was higher than imported and commercialized gasoline. In addition, the estimation of benzene emissions by mobile sources was 354.79 t during 2017.

Keywords : environmental laws; gas stations; characterization; Mexico City.

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