<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662017000600010</article-id>
<article-id pub-id-type="doi">10.15174/au.2017.1386</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de la contaminación por elementos traza en suelos agrícolas del suroeste de Guanajuato, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of trace elements contamination in agricultural soils in southwest of Guanajuato, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Pérez]]></surname>
<given-names><![CDATA[María Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rincón-Castro]]></surname>
<given-names><![CDATA[María Cristina Del]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Torres]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Aguilar]]></surname>
<given-names><![CDATA[Graciela M. L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solís-Valdez]]></surname>
<given-names><![CDATA[Sara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zanor]]></surname>
<given-names><![CDATA[Gabriela A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Guanajuato  ]]></institution>
<addr-line><![CDATA[Irapuato Guanajuato]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>27</volume>
<numero>6</numero>
<fpage>10</fpage>
<lpage>21</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662017000600010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662017000600010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662017000600010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El objetivo de esta investigación fue evaluar la contaminación de 18 muestras de suelos de uso agrícola del suroeste del estado de Guanajuato mediante el análisis de las concentraciones totales de elementos traza (arsénico [As], cadmio [Cd], cromo [Cr], cobre [Cu], plomo [Pb] y zinc [Zn]) por Espectrometría de Emisión Óptica con Plasma Acoplado Inductivamente y el Índice de Geoacumulación (Igeo). Los rangos de concentración de As (&lt; 0.009 mg kg-1 - 14.97 mg kg-1), Cd (0.06 mg kg-1 - 0.76 mg kg-1), Cr (11.31 mg kg-1 - 33.85 mg kg-1), Cu (&lt; 0.004 mg kg-1 - 99.98 mg kg-1), Pb (4.87 mg kg-1 - 41.79 mg kg-1) y Zn (21.98 mg kg-1 - 109.44 mg kg-1) se encontraron por debajo de la concentración de referencia total de la NOM-147-SEMARNAT/ SSA1-2004. En cuanto al Igeo, el As, Cu, Pb y Zn presentaron concentraciones entre las categorías no contaminado a moderadamente contaminado (Clase 0, 1 y 2) mientras que los suelos resultaron no contaminados con Cr (Clase 0). Por su parte, el Cd presentó el Igeo más alto (Clase 3: moderado a fuertemente contaminado).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The aim of this study was to evaluate the contamination index of 18 agricultural soil samples in the southwest of Guanajuato by carrying out an analysis of the total trace element concentrations (arsenic [As], cadmium [Cd], chrome [Cr], copper [Cu], lead [Pb] and zinc [Zn]) with the use of Inductively Coupled Plasma Optical Emission Spectrometry and the geoaccumulation index (Igeo). The trace element concentration ranges of As (&lt;0.009 mg kg-1 - 14.97 mg kg-1), Cd (0.06 mg kg-1 - 0.76 mg kg-1), Cr (11.31 mg kg-1 - 33.85 mg kg-1), Cu (&lt;0.004 mg kg-1 - 99.98 mg kg-1), Pb (4.87 mg kg-1 - 41.79 mg kg-1) and Zn (21.98 mg kg-1 - 109.44 mg kg-1) were below the total reference concentration compared to the Mexican Official Norm NOM-147-SEMARNAT/SSA1-2004 (DOF, 2007). In regard to the Igeo, As, Cu, Pb and Zn presented concentrations ranging from uncontaminated to moderately contaminated categories (Class 0, 1 and 2) while the soils were uncontaminated by Cr (Class 0). On the other hand, the Cd showed the highest Igeo (Class 3: moderately to heavily contaminated).]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Suelos agrícolas]]></kwd>
<kwd lng="es"><![CDATA[metales]]></kwd>
<kwd lng="es"><![CDATA[Índice de Geoacumulación]]></kwd>
<kwd lng="es"><![CDATA[propiedades físicas]]></kwd>
<kwd lng="es"><![CDATA[propiedades químicas]]></kwd>
<kwd lng="en"><![CDATA[Agricultural soils]]></kwd>
<kwd lng="en"><![CDATA[metals]]></kwd>
<kwd lng="en"><![CDATA[geoaccumulation index]]></kwd>
<kwd lng="en"><![CDATA[physical properties]]></kwd>
<kwd lng="en"><![CDATA[chemical properties]]></kwd>
</kwd-group>
</article-meta>
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