<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792014000100001</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Residuos de plaguicidas organoclorados en suelos agrícolas]]></article-title>
<article-title xml:lang="en"><![CDATA[Organochlorine pesticide residues in agricultural soils]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leal Soto]]></surname>
<given-names><![CDATA[Sergio David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valenzuela Quintanar]]></surname>
<given-names><![CDATA[Ana Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Coronado]]></surname>
<given-names><![CDATA[María de Lourdes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bermúdez Almada]]></surname>
<given-names><![CDATA[María del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Hernández]]></surname>
<given-names><![CDATA[Jaqueline]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aldana Madrid]]></surname>
<given-names><![CDATA[María Lourdes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Grajeda Cota]]></surname>
<given-names><![CDATA[Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silveira Gramont]]></surname>
<given-names><![CDATA[María Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Meza Montenegro]]></surname>
<given-names><![CDATA[María Mercedes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palma Durán]]></surname>
<given-names><![CDATA[Susana Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leyva García]]></surname>
<given-names><![CDATA[Germán Nepomuceno]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Camarena Gómez]]></surname>
<given-names><![CDATA[Beatriz Olivia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valenzuela Navarro]]></surname>
<given-names><![CDATA[Ciara Paulina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo, A. C.  ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Sonora Departamento de Investigación y Posgrado en Alimentos ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,ITSON Depto. de Recursos Naturales ]]></institution>
<addr-line><![CDATA[Cd. Obregón Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2014</year>
</pub-date>
<volume>32</volume>
<numero>1</numero>
<fpage>1</fpage>
<lpage>11</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792014000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792014000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792014000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La actividad agrícola del estado de Sonora se caracteriza por ser de las más desarrolladas del país, es altamente productiva, tecnificada y generadora de divisas. Para mantener las demandas del mercado ha sido necesario implementar cultivos intensivos y el uso indiscriminado de agroquímicos, lo que ha provocado la contaminación del suelo. Los plaguicidas organoclorados (POC's) fueron utilizados desde l950 hasta 1991, principalmente en el cultivo de algodón. En países industrializados fueron prohibidos o restringidos desde 1970 y en México a partir de 1991. Los POC's representan un riesgo para la salud y el medio ambiente por su toxicidad, bioacumulación, volatilidad y persistencia; es por ello, que a través del Convenio de Estocolmo, los países adheridos están comprometidos a su reducción o eliminación. El objetivo del presente trabajo fue verificar la presencia de los POC's en suelos de las principales zonas agrícolas (ZA) del estado de Sonora. Se extrajeron 17 POC's por el método de dispersión de matriz en fase sólida (DMFS) y análisis por cromatografía de gases. Se muestrearon 45 campos donde se recolectaron cinco muestras de suelo (capa superficial y 60 cm de profundidad) y se entrevistó a los encargados para conocer los cultivos históricos y aplicación de POC's. El 100% de los entrevistados manifestó haber utilizado POC's. Los porcentajes de recuperación fueron del 78 al 116% con CV &lt; 20%. Los residuos de POC's estuvieron en un rango de no detectados (nd) a 45.75 µg kg-1. En Caborca: 1.22-9.62, Hermosillo: nd-7.49, Magdalena: 0.73-24.40, Ures: nd-18.78 y Guaymas: 1.43-45.75. Los de mayor incidencia fueron: DDE, endosulfán, &#947;-clordano, heptacloro epóxido y endrín. La correlación positiva entre la materia orgánica y los POC's, puede propiciar su acumulación en los suelos agrícolas analizados. Estos resultados indican que las ZA de la entidad están contaminadas y son un riesgo para la salud y el medio ambiente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Agricultural activity in the state of Sonora is well known as one of the most developed in the country. It is high-tech and highly productive, and brings in a large amount of foreign currency. To continue supplying the national and international markets' high demand for produce, intensive cultivation has been necessary, and heavy use of agrochemicals has resulted in soil pollution. Organochlorine pesticides (OCPs) were used from l950 to 1991, mainly on cotton crops. In industrialized countries these pesticides were banned or restricted in 1970 and they have been banned in Mexico since 1991.These agrochemicals are harmful to human health as well as to the environment due to their toxicity and volatility, and because they accumulate and persist in the soil. For this reason, countries participating in the Stockholm Convention agreed to reduce or eliminate their use. The objective of this work was to verify the presence of OCPs in the main agricultural areas (North and Central) of the state of Sonora. Using the matrix solid phase dispersion method and gas chromatography, 17 OCPs were extracted from 45 sampled fields. Five soil samples were collected (from surface layer and at a depth of 60 cm) from each field. Crop managers were interviewed to obtain historical information on crops and application of OCPs. All (100%) of respondents reported having used OCPs. OCP recovery percentages were 78 to 116% with a CV &lt; 20%. Fifteen pesticides in agricultural fields of rural development districts were found in the range of not detected (nd) to 45.75&#956;g kg-1. In Caborca: 1.22-9.62, Hermosillo: nd-7.49, Magdalena: 0.73-24.40, Ures: nd-18.78, and Guaymas: 1.43-45.75. Those found most frequently were DDE, endosulfan, &#947;-chlordane, heptachlor and endrin epoxy. Positive correlations between organic matter and OCPs suggest that organic matter favors OCP accumulation in agricultural soils. The results indicate that agricultural areas in Sonora are contaminated and are a risk to human, wildlife and ecosystem health.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[estado de Sonora]]></kwd>
<kwd lng="es"><![CDATA[toxicidad]]></kwd>
<kwd lng="es"><![CDATA[degradación de suelos]]></kwd>
<kwd lng="en"><![CDATA[Sonora]]></kwd>
<kwd lng="en"><![CDATA[toxicity]]></kwd>
<kwd lng="en"><![CDATA[soil degradation]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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