<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0188-4999</journal-id>
<journal-title><![CDATA[Revista internacional de contaminación ambiental]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Int. Contam. Ambient]]></abbrev-journal-title>
<issn>0188-4999</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-49992020000200321</article-id>
<article-id pub-id-type="doi">10.20937/rica.53402</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[ANÁLISIS DEL CONTENIDO DE BENCENO EN LAS GASOLINAS Y ESTIMACIÓN DE EMISIONES DE ESTE COMPUESTO AL AMBIENTE]]></article-title>
<article-title xml:lang="en"><![CDATA[ANALYSIS OF BENZENE CONTENT IN GASOLINES AND EMISSIONS ESTIMATION OF THIS COMPOUND TO THE ENVIRONMENT]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcántar González]]></surname>
<given-names><![CDATA[Fabiola Selene]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Elizalde Segovia]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olvera Santos]]></surname>
<given-names><![CDATA[María Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Herrera]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz Gómez]]></surname>
<given-names><![CDATA[M. Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Química Departamento de Ingeniería Química]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>36</volume>
<numero>2</numero>
<fpage>321</fpage>
<lpage>331</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992020000200321&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992020000200321&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992020000200321&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El uso de gasolinas es un tema de gran interés en el ámbito ecológico debido a las emisiones que generan los automotores, por lo que el control de los parámetros que regulan la calidad de las gasolinas es necesario para mantener una buena calidad del aire. La Ciudad de México (CdMx) es una metrópoli con una flota vehicular registrada de 4 421 797 (2014), factor que influye en la calidad del aire. Las especificaciones de calidad de la gasolina en México están reguladas por la NOM-016-CRE-2016. Uno de los compuestos regulados por esta norma es el benceno, que se considera un agente carcinogénico. Se ha determinado que la presencia de benceno en la gasolina puede afectar la salud de la población, ya que al ser un compuesto volátil se evapora con gran facilidad, poniéndose en contacto con la atmósfera y por consecuencia con la población. En este trabajo se cuantificó la cantidad de benceno presente en las gasolinas que se comercializan en la CdMx mediante el uso de la técnica ASTM D5769-15 y se determinó que el contenido promedio de este compuesto fue de 0.361 % para la gasolina Magna, mientras que el contenido promedio de benceno en las gasolinas importadas fue de 0.55 %. En cuanto a las gasolinas producidas en el Sistema Nacional de Refinación, el contenido de benceno fue de 1.288 %, valor superior al de las gasolinas importadas y comercializadas en la CdMx. Asimismo, se estimó una emisión de 354.79 t de benceno durante 2017 debido al uso de automóviles en la CdMx.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT 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.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[normatividad ambiental]]></kwd>
<kwd lng="es"><![CDATA[gasolineras]]></kwd>
<kwd lng="es"><![CDATA[caracterización]]></kwd>
<kwd lng="es"><![CDATA[CdMx]]></kwd>
<kwd lng="en"><![CDATA[environmental laws]]></kwd>
<kwd lng="en"><![CDATA[gas stations]]></kwd>
<kwd lng="en"><![CDATA[characterization]]></kwd>
<kwd lng="en"><![CDATA[Mexico City]]></kwd>
</kwd-group>
</article-meta>
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