<?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>S0188-49992019000200335</article-id>
<article-id pub-id-type="doi">10.20937/rica.2019.35.02.06</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[NIVEL DE CONTAMINACIÓN DE METALES Y ARSÉNICO EN AGUAS RESIDUALES Y SUELOS EN LA SUBCUENCA DEL ALTO BALSAS EN TLAXCALA Y PUEBLA, MÉXICO]]></article-title>
<article-title xml:lang="en"><![CDATA[HEAVY METALS POLLUTION LEVEL IN WASTEWATER AND SOILS IN THE ALTO BALSAS SUB-BASIN IN TLAXCALA AND PUEBLA, MEXICO]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castro-González]]></surname>
<given-names><![CDATA[Numa Pompilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderón-Sánchez]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Rojas]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tamariz-Flores]]></surname>
<given-names><![CDATA[José Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Cervantes]]></surname>
<given-names><![CDATA[Erick]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Ingeniería Agrohidráulica ]]></institution>
<addr-line><![CDATA[Tlatlauquitepec Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[San Pedro Cholula Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Córdoba  ]]></institution>
<addr-line><![CDATA[Córdoba ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Departamento de Investigación en Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Centro Universitario de Vinculación y Transferencia de Tecnología ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>35</volume>
<numero>2</numero>
<fpage>335</fpage>
<lpage>348</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992019000200335&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992019000200335&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992019000200335&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El objetivo de este trabajo fue determinar si los metales y el As contenidos en los suelos agrícolas irrigados con aguas residuales son de origen antrópico o natural. Para ello se calcularon el índice de geoacumulación y el factor de enriquecimiento a partir del contenido de Cd, Pb, Ni, Cu, Co, Cr, Zn y As en los suelos irrigados con las aguas residuales de los ríos Atoyac y Zahuapan, así como el canal de Valsequillo. Se recolectaron muestras de agua residual y suelo en 16 sitios agrupados en cuatro zonas en dos temporadas del año (verano y primavera). La determinación de metales y As se realizó con un espectrómetro de emisión óptica de plasma con acoplamiento inductivo (ICP-OES, por sus siglas en inglés), previa digestión en un equipo de microondas. Las diferencias (p &lt; 0.05) entre fuentes de agua residual coinciden con el origen de éstas, donde el río Atoyac presenta la mayor concentración de Pb. Los metales y el As en agua no rebasaron los niveles permitidos por la NOM-001-ECOL-1996 y las reglas del Consejo Canadiense de Ministros del Medio Ambiente, y solamente el valor del Cu fue superior al establecido por la legislación de España. Los suelos mostraron un contenido de metales y arsénico en orden decreciente: Zn (22.8) &gt; Cr (17.7) &gt; Ni (14.8) &gt; Pb (14.7) &gt; Cu (13.06) &gt; Co (5.5) &gt; As (5.3) &gt; Cd (1.2) mg/kg. El índice de geoacumulación fue de 0.003 a 3.0, siendo el Cd el de mayor geoacumulación. El factor de enriquecimiento varió de 1.84 a 6.0. Ambos índices muestran la existencia de contaminación de origen antrópico en los suelos agrícolas de la subcuenca del Alto Balsas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The objective of this work was to determine if metals and As contained in agricultural soils irrigated with wastewater are of anthropic or natural origin. For this, the geoaccumulation index and the enrichment factor were calculated from the content of Cd, Pb, Ni, Cu, Co, Cr, Zn and As, in the irrigated soils with the wastewater of the Atoyac and Zahuapan rivers, as well as the Valsequillo channel. Samples of wastewater and soil were collected in 16 sites grouped into four zones in two seasons of the year (summer and spring). The determination of metals and As was carried out with a plasma optical emission spectrometer with inductive coupling (ICP-OES) after digestion in a microwave equipment. The differences (p &lt; 0.05) between sources of wastewater coincide with their origin, where the Atoyac river has the highest concentration of Pb. The metals and As in water did not exceed the levels allowed by the NOM-001-ECOL-1996 and the regulations of the Canadian Council of Ministers of the Environment and only the Cu was higher than the value established by the legislation of Spain. The soils showed a metal and arsenic content in decreasing order: Zn (22.8) &gt; Cr (17.7) &gt; Ni (14.8) &gt; Pb (14.7) &gt; Cu (13.06) &gt; Co (5.5) &gt; As (5.3) &gt; Cd (1.2) mg/kg. The geoaccumulation index was 0.003 to 3.0, Cd the one with the highest geoaccumulation. The enrichment factor fluctuated from 1.84 to 6.0. Both indices show the existence of anthropic contamination of agricultural soils in the Alto Balsas sub-basin.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[índice de geoacumulación]]></kwd>
<kwd lng="es"><![CDATA[factor de enriquecimiento]]></kwd>
<kwd lng="es"><![CDATA[suelos contaminados]]></kwd>
<kwd lng="en"><![CDATA[geoacumulation index]]></kwd>
<kwd lng="en"><![CDATA[enrichment factor]]></kwd>
<kwd lng="en"><![CDATA[polluted soils]]></kwd>
</kwd-group>
</article-meta>
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