<?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>S0188-49992020000400835</article-id>
<article-id pub-id-type="doi">10.20937/rica.53600</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[EFECTOS DE LAS AGUAS RESIDUALES DE POZOS PETROLEROS SOBRE LOS SUELOS DE SABANAS UBICADAS CERCA DE EL FURRIAL, ESTADO MONAGAS, VENEZUEL A]]></article-title>
<article-title xml:lang="en"><![CDATA[EFFECTS OF SEWAGE FLUIDS FROM OIL DRILLINGS ON THE SOILS OF SAVANNAS LOCATED NEAR EL FURRIAL, MONAGAS STATE, VENEZUELA]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Hernández]]></surname>
<given-names><![CDATA[Danilo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Liendo]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urich]]></surname>
<given-names><![CDATA[Juan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vallejo-Torres]]></surname>
<given-names><![CDATA[Oswaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central de Venezuela Facultad de Ciencias Instituto de Zoología y Ecología Tropical]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Experimental Marítima de Caribe Ingeniería Ambiental ]]></institution>
<addr-line><![CDATA[Catia la Mar Estado Vargas]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto de Tecnología Venezolana para el Petróleo  ]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Central de Venezuela Facultad de Ciencias Postgrado de Ecología]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Nacional Experimental de los Llanos Occidentales Decanato de Postgrado ]]></institution>
<addr-line><![CDATA[Guanare Estado Portuguesa]]></addr-line>
<country>Venezuela</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>4</numero>
<fpage>835</fpage>
<lpage>845</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992020000400835&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992020000400835&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992020000400835&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En los ambientes terrestres afectados por la actividad petrolera los fluidos de perforación y las aguas residuales (AR) generados en estas operaciones representan un problema ambiental y estético de importancia. Las AR, ricas en sólidos en suspensión, sales solubles y con potenciales contaminantes, son transportadas a una fosa donde se tratan con un agente floculante y se corrige su pH. Posteriormente, las aguas resultantes son regadas al ambiente. Es importante conocer los efectos de esas AR sobre los ecosistemas terrestres circunvecinos. El objetivo de este trabajo es analizar los niveles de sales solubles y metales pesados en los suelos de sabanas adyacentes a pozos petroleros ubicados en el oriente de Venezuela después del riego con AR. Cuando son regadas al ambiente, las AR tratadas tienen un efecto encalante sobre la acidez natural de esos suelos. En ninguno de los casos estudiados se encontraron niveles altos de metales pesados (Fe, Mn, Cu y Zn) y aluminio soluble en los suelos, ya que fueron corregidos por el incremento de pH. En general, los suelos tratados con los efluentes presentaron mayor concentración de sodio; sin embargo, no existe riesgo ambiental potencial en las cantidades de sodio soluble liberados a los ultisoles arenosos, ya que el buen drenaje interno de éstos y la adecuada precipitación de la zona permiten el pronto desalojo de sales sin peligro de salinización. No obstante, se recomienda una estricta vigilancia, en particular de los niveles de pH de las aguas residuales antes de ser regadas a las sabanas circunvecinas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In terrestrial environments affected by oil operations, oil drilling and sewage fluids (SF) represent an environmental and aesthetic problem of importance. Before watered to the environment, SF rich in suspended solids and with potential contaminants, are transported to a tank treated with a flocculant agent and corrected for pH. The resulting waters are then disposed to the local savannas. It is important to know the effects that those treated SF may have on the surrounding ecosystems. This contribution aims to analyze the levels of soluble salts and heavy metals in the soils adjacent to oil wells located in the eastern part of the Venezuelan savannas after irrigation with treated SF. The treated SF watered to the environment have a liming effect on the natural acidity of soils. In general, no high levels of heavy metals (Fe, Mn, Cu and Zn) were found nor soluble aluminum in treated soils, which is due to the rise in pH after treatment. The soils treated with effluents generally had a higher sodium concentration. However, there is no potential environmental risk in the amounts of soluble sodium released to the sandy ultisols since the good internal drainage of these and the proper precipitation of the area allow the soon eviction of salts without danger of salinization. Nevertheless, strict monitoring is recommended, in particular of the pH levels of wastewater before being irrigated to the surrounding savannas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[sodio]]></kwd>
<kwd lng="es"><![CDATA[bario]]></kwd>
<kwd lng="es"><![CDATA[aluminio]]></kwd>
<kwd lng="es"><![CDATA[fluidos de perforación]]></kwd>
<kwd lng="en"><![CDATA[contamination]]></kwd>
<kwd lng="en"><![CDATA[sodium]]></kwd>
<kwd lng="en"><![CDATA[barium]]></kwd>
<kwd lng="en"><![CDATA[aluminum]]></kwd>
<kwd lng="en"><![CDATA[drilling fluids]]></kwd>
</kwd-group>
</article-meta>
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