<?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>S0188-62662017000100045</article-id>
<article-id pub-id-type="doi">10.15174/au.2017.1203</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Monitoring of pesticides residues in northwestern Mexico rivers]]></article-title>
<article-title xml:lang="es"><![CDATA[Monitoreo de residuos de plaguicidas en ríos del noroeste de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leyva Morales]]></surname>
<given-names><![CDATA[José Belisario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdez Torres]]></surname>
<given-names><![CDATA[José Benigno]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bastidas Bastidas]]></surname>
<given-names><![CDATA[Pedro de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Angulo Escalante]]></surname>
<given-names><![CDATA[Miguel Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sarmiento Sánchez]]></surname>
<given-names><![CDATA[Juan Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barraza Lobo]]></surname>
<given-names><![CDATA[Alma Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olmeda Rubio]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chaidez Quiroz]]></surname>
<given-names><![CDATA[Cristóbal]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Consejo Nacional de Ciencia y Tecnología  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Sinaloa Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2017</year>
</pub-date>
<volume>27</volume>
<numero>1</numero>
<fpage>45</fpage>
<lpage>54</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662017000100045&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662017000100045&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662017000100045&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In Mexico, use of river water for households, agriculture and industry has adversely affected aquatic environment through chemical and microbial contamination. The aim of this study was to determine pesticide residues levels in water of rivers from central Sinaloa State, Northwestern Mexico. In samples obtained from July 2008 to June 2009 pesticides residues detected were lindane, heptachlor, endosulfan, dicloro difenil tricloroetano (DDT), diazinon, chlorpyrifos, permethrin, methyl parathion, cyromazine, ethion, carbofenothion, lambda cyhalotrine, pyrimicarb, malathion and aldrin. None exceeded water quality ecological criteria or those established by US Environmental Protection Agency. Comparatively low concentrations and frequencies suggest that pesticide contamination derived from runoffs toward river from contaminated soil particles and not from use of pesticides in intensive agriculture of region.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En México, el uso de agua de río para los hogares, la agricultura y la industria ha afectado negativamente al medio ambiente acuático a través de la contaminación química y microbiana. El objetivo de este estudio fue determinar los niveles de residuos de plaguicidas en agua de ríos del centro de Sinaloa, noroeste de México. En las muestras obtenidas de julio 2008 a junio de 2009, los residuos de plaguicidas detectados fueron lindano, heptacloro, endosulfán, dicloro difenil tricloroetano (DDT), diazinón, clorpirifos, permetrina, paratión metílico, ciromazina, etión, carbofenotión, lambda cialotrina, pirimicarb, malatión y aldrin. Ninguno superó los criterios ecológicos para la calidad del agua o de los establecidos por la Agencia de Protección Ambiental de Estados Unidos de América. Las concentraciones y frecuencias relativamente bajas sugieren que la contaminación por plaguicidas derivada de escurrimientos hacia el río de las partículas de suelo contaminado y no del uso de plaguicidas en la agricultura intensiva de la región.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Agriculture]]></kwd>
<kwd lng="en"><![CDATA[water]]></kwd>
<kwd lng="en"><![CDATA[chemical contamination]]></kwd>
<kwd lng="en"><![CDATA[Culiacan Valley]]></kwd>
<kwd lng="es"><![CDATA[Agricultura]]></kwd>
<kwd lng="es"><![CDATA[agua]]></kwd>
<kwd lng="es"><![CDATA[contaminación química]]></kwd>
<kwd lng="es"><![CDATA[Valle de Culiacán]]></kwd>
</kwd-group>
</article-meta>
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