<?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>2730-5066</journal-id>
<journal-title><![CDATA[Agrociencia Uruguay]]></journal-title>
<abbrev-journal-title><![CDATA[Agrocienc. Urug.]]></abbrev-journal-title>
<issn>2730-5066</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Agronomía - Instituto de Nacional de Investigación Agropecuaria]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2730-50662022000503302</article-id>
<article-id pub-id-type="doi">10.31285/agro.26.957</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación hidrogeológica e isotópica de capas acuíferas y su relación con presencia de atrazina]]></article-title>
<article-title xml:lang="en"><![CDATA[Hydrogeological and isotopic evaluation of aquifer layers and their relation with atrazine presence]]></article-title>
<article-title xml:lang="pt"><![CDATA[Avaliação hidrogeológica e isotópica de camadas de aquífero e sua relação com a presença de atrazina]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Giacobone]]></surname>
<given-names><![CDATA[D. B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Blarasin]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lutri]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Matteoda]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cendon]]></surname>
<given-names><![CDATA[D. I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Currell]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera]]></surname>
<given-names><![CDATA[A. E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aparicio]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Departamento de Geología Facultad de Ciencias Exactas]]></institution>
<addr-line><![CDATA[ Córdoba]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Río Cuarto (UNRC) Departamento de Geología Facultad de Ciencias Exactas]]></institution>
<addr-line><![CDATA[ Córdoba]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,RMIT University School of Engineering ]]></institution>
<addr-line><![CDATA[ Melbourne]]></addr-line>
<country>Australia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Australia's Nuclear Science and Technology Organisation (ANSTO)  ]]></institution>
<addr-line><![CDATA[ Sydney]]></addr-line>
<country>Australia</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Instituto Nacional de Tecnología Agropecuaria (INTA)  ]]></institution>
<addr-line><![CDATA[ Buenos Aires]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>26</volume>
<numero>nspe3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_arttext&amp;pid=S2730-50662022000503302&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_abstract&amp;pid=S2730-50662022000503302&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_pdf&amp;pid=S2730-50662022000503302&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Dado que las aguas subterráneas constituyen la mayor reserva de agua dulce líquida en el mundo, la presencia de diversos contaminantes en acuíferos es un tema alarmante. En los sectores rurales prevalecen las problemáticas relacionadas con la contaminación del agua por la implementación de las prácticas de la agricultura industrializada. Con relación a uso de plaguicidas, la atrazina se aplica en forma extensiva en el cultivo de maíz y de sorgo para el control de malezas. El objetivo de este trabajo fue evaluar su presencia en el acuífero libre y las capas acuíferas confinadas de la planicie loéssica de Marcos Juárez, relacionándola con el modelo hidrogeológico de la región. Para tal fin, también se evaluó el comportamiento hidrogeológico con apoyo de isótopos estables del agua (&#948;2H y &#948;18O) y edades radiocarbono (pCM). Se concluye que hay evidencias del impacto de las prácticas agrícolas actuales en capas acuíferas confinadas, aunque es mayor en el acuífero libre por su mayor posibilidad de recibir recarga de aguas modernas y de vincularse a las actividades humanas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The presence of diverse contaminants in groundwater is a matter of concern since the aquifers constitute the major reserve of liquid freshwater of the world. In rural environments issues related to groundwater contamination prevail by the implementation of industrialized agricultural practices. In relation to pesticide uses, atrazine is applied extensively in corn and sorghum crops to control weeds. The objective of this work was to assess the presence of atrazine in the unconfined aquifer and confined aquifer layers located in the Marcos Juarez loessic plain, linking it with the regional hydrogeological model. For this purpose, the hydrological behavior by stable water isotopes (&#948;2H and &#948;18O) and radiocarbon ages (pMC) was also evaluated. It is concluded that there are pieces of evidences of the impact of the current agricultural activities on both aquifers, being higher on the unconfined aquifer, that receives modern water recharge and is more linked to human activities.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo: Dado que as águas subterrâneas constituem o maior reservatório de água doce líquida do mundo, a presença de diversos poluentes nos aquíferos é um problema alarmante. No setor rural, os problemas relacionados à contaminação da água prevalecem devido à implantação de práticas agrícolas industrializadas. Em relação ao uso de agrotóxicos, a atrazina é amplamente aplicada no cultivo de milho e sorgo para controle de plantas daninhas. O objetivo deste trabalho foi avaliar a presença de atrazina no aquífero livre e nos aquíferos confinados da planície loésica de Marcos Juárez, relacionando-a com o modelo hidrogeológico da região. Para isso, o comportamento hidrogeológico também foi avaliado com o apoio de isótopos estáveis da água (&#948;2H y &#948;18O) e idades de radiocarbono (pCM). Conclui-se que há evidências do impacto das práticas agrícolas atuais em aquíferos confinados, embora seja maior no aquífero livre pela maior possibilidade de recepção de recargas hídricas modernas e por sua vinculação às atividades humanas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[ages]]></kwd>
<kwd lng="en"><![CDATA[atrazine]]></kwd>
<kwd lng="en"><![CDATA[aquifers]]></kwd>
<kwd lng="en"><![CDATA[herbicides]]></kwd>
<kwd lng="en"><![CDATA[impact]]></kwd>
<kwd lng="en"><![CDATA[edades]]></kwd>
<kwd lng="en"><![CDATA[atrazina]]></kwd>
<kwd lng="en"><![CDATA[acuíferos]]></kwd>
<kwd lng="en"><![CDATA[herbicidas]]></kwd>
<kwd lng="en"><![CDATA[impacto]]></kwd>
<kwd lng="pt"><![CDATA[idades]]></kwd>
<kwd lng="pt"><![CDATA[atrazina]]></kwd>
<kwd lng="pt"><![CDATA[aquíferos]]></kwd>
<kwd lng="pt"><![CDATA[herbicidas]]></kwd>
<kwd lng="pt"><![CDATA[impacto]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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