<?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>1665-2738</journal-id>
<journal-title><![CDATA[Revista mexicana de ingeniería química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Ing. Quím]]></abbrev-journal-title>
<issn>1665-2738</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Metropolitana, División de Ciencias Básicas e Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-27382014000200015</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Hydrocarbon pollution studies of underwater sinkholes along Quintana Roo as a function of tourism development in the Mexican Caribbean]]></article-title>
<article-title xml:lang="es"><![CDATA[Estudios de contaminación por hidrocarburos en cenotes de Quintana Roo relacionada al desarrollo turístico en el Caribe Mexicano]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina-Moreno]]></surname>
<given-names><![CDATA[S.A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez-González]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Rojas]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lizardi-Jiménez]]></surname>
<given-names><![CDATA[M.A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Politécnica de Pachuca  ]]></institution>
<addr-line><![CDATA[Zempoala Hidalgo]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento de Biotecnología ]]></institution>
<addr-line><![CDATA[Iztapalapa Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2014</year>
</pub-date>
<volume>13</volume>
<numero>2</numero>
<fpage>509</fpage>
<lpage>516</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-27382014000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-27382014000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-27382014000200015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[This work studied in a wide geographical area during two vacational seasons, the presence of hydrocarbon contaminants in sinkholes along the Mexican state of Quintana Roo, an important caribeann tourism region. Phenanthrene, naphthalene and benzene derivates were found as the most common hydrocarbon contaminants present in underwater sinkholes located in Cancún and Playa del Carmen, two well-developed tourism poles. Other regions of Quintana Roo, with intermediate tourism development (Puerto Morelos, Tulum, Cozumel and Bacalar) show hydrocarbon presence too. In comparison, Holbox which is a recent touristic development where the use of motor transportation for tourists and locals is less common, has not reached the contamination level of Cancun or Playa del Carmen nor the pollution level of intermediate tourism development poles as Tulum or Cozumel. Concentration of hydrocarbons is related to vacational seasons, sinkholes during "High" season shows major hydrocarbon concentration and diversity than during "Low" season.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[En este trabajo se estudió, en una amplia zona geográfica y dos temporadas vacacionales, la presencia de hidrocarburos contaminantes en cenotes del estado de Quintana Roo, una región turística importante en el Caribe. Se encontró Fenantreno, naftaleno y benceno entre los hidrocarburos contaminantes más comunes presentes en los cenotes ubicados en Cancún y Playa del Carmen, dos polos turísticos bien desarrollados. Otras regiones de Quintana Roo, con desarrollo de turismo intermedio (Puerto Morelos, Tulum, Cozumel y Bacalar) muestran la presencia de hidrocarburos también. En comparación, Holbox, que es un reciente polo de desarrollo turístico, donde el transporte de turistas y lugareños es bajo, no presenta contaminación por los hidrocarburos estudiados en este trabajo. La concentración de hidrocarburos también está relacionada con la temporada turística, los cenotes durante la temporada "alta" mostraron mayor concentración y diversidad de hidrocarburos que en la temporada "baja".]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[airlift bioreactor]]></kwd>
<kwd lng="en"><![CDATA[hydrocarbon]]></kwd>
<kwd lng="en"><![CDATA[water pollution]]></kwd>
<kwd lng="en"><![CDATA[tourism]]></kwd>
<kwd lng="en"><![CDATA[sinkholes]]></kwd>
<kwd lng="es"><![CDATA[biorreactor airlift]]></kwd>
<kwd lng="es"><![CDATA[hidrocarburos]]></kwd>
<kwd lng="es"><![CDATA[contaminación del agua]]></kwd>
<kwd lng="es"><![CDATA[turismo]]></kwd>
<kwd lng="es"><![CDATA[cenotes]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Art&iacute;culos regulares/Ingenier&iacute;a ambiental</font></p>      	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="center"><font face="verdana" size="4"><b>Hydrocarbon pollution studies of underwater sinkholes along Quintana Roo as a function of tourism development in the Mexican Caribbean</b></font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="center"><font face="verdana" size="3"><b>Estudios de contaminaci&oacute;n por hidrocarburos en cenotes de Quintana Roo relacionada al desarrollo tur&iacute;stico en el Caribe Mexicano</b></font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="center"><font face="verdana" size="2"><b>S.A. Medina&#45;Moreno<sup>1</sup>, A. Jim&eacute;nez&#45;Gonz&aacute;lez<sup>1</sup>, M. Guti&eacute;rrez&#45;Rojas<sup>2</sup>, M.A. Lizardi&#45;Jim&eacute;nez<sup>1</sup>*</b></font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2"><i><sup>1</sup> Universidad Polit&eacute;cnica de Pachuca, Carretera Pachuca&#45;Cd. Sahagun, km 20, Ex&#45;Hacienda de Santa B&aacute;rbara, </i><i>Municipio de Zempoala Hidalgo. *Corresponding author. E&#45;mail:</i> <a href="mailto:chamarripas@yahoo.com.mx">chamarripas@yahoo.com.mx</a> <i>Tel. Fax + (771)2118365, Fax + (771)2118365.</i></font></p>         <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Departamento de Biotecnolog&iacute;a, Universidad Aut&oacute;noma Metropolitana&#45;Iztapalapa, Av. San Rafael Atlixco No. 186, Col. Vicentina, Iztapalapa, M&eacute;xico, D.F. C.P. 09340, M&eacute;xico.</i></font></p>         ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2">Received March 3, 2013.    <br> Accepted May 21, 2014.</font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>         <p align="justify"><font face="verdana" size="2">This work studied in a wide geographical area during two vacational seasons, the presence of hydrocarbon contaminants in sinkholes along the Mexican state of Quintana Roo, an important caribeann tourism region. Phenanthrene, naphthalene and benzene derivates were found as the most common hydrocarbon contaminants present in underwater sinkholes located in Canc&uacute;n and Playa del Carmen, two well&#45;developed tourism poles. Other regions of Quintana Roo, with intermediate tourism development (Puerto Morelos, Tulum, Cozumel and Bacalar) show hydrocarbon presence too. In comparison, Holbox which is a recent touristic development where the use of motor transportation for tourists and locals is less common, has not reached the contamination
level of Cancun or Playa del Carmen nor the pollution level of intermediate tourism development poles as Tulum or Cozumel. Concentration of hydrocarbons is related to vacational seasons, sinkholes during "High" season shows major hydrocarbon concentration and diversity than during "Low" season.</font></p>          <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> airlift bioreactor, hydrocarbon, water pollution, tourism, sinkholes. </font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>         <p align="justify"><font face="verdana" size="2">En este trabajo se estudi&oacute;, en una amplia zona geogr&aacute;fica y dos temporadas vacacionales, la presencia de hidrocarburos contaminantes en cenotes del estado de Quintana Roo, una regi&oacute;n tur&iacute;stica importante en el Caribe. Se encontr&oacute; Fenantreno, naftaleno y benceno entre los hidrocarburos contaminantes m&aacute;s comunes presentes en los cenotes ubicados en Canc&uacute;n y Playa del Carmen, dos polos tur&iacute;sticos bien desarrollados. Otras regiones de Quintana Roo, con desarrollo de turismo intermedio (Puerto Morelos, Tulum, Cozumel y Bacalar) muestran la presencia de hidrocarburos tambi&eacute;n. En comparaci&oacute;n, Holbox, que es un reciente polo de desarrollo tur&iacute;stico, donde el transporte de
turistas y lugare&ntilde;os es bajo, no presenta contaminaci&oacute;n por los hidrocarburos estudiados en este trabajo. La concentraci&oacute;n de hidrocarburos tambi&eacute;n est&aacute; relacionada con la temporada tur&iacute;stica, los cenotes durante la temporada "alta" mostraron mayor concentraci&oacute;n y diversidad de hidrocarburos que en la temporada "baja".</font></p>              ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> biorreactor airlift, hidrocarburos, contaminaci&oacute;n del agua, turismo, cenotes.</font></p>              <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>              <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmiq/v13n2/v13n2a15.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>         <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>         <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>              <!-- ref --><p align="justify"><font face="verdana" size="2">Bhoosreddy, W. (1995). <i>Manual of Diagnostic Microbiology.</i> pp. 185&#45;193. 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