<?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>S0188-49992019000400849</article-id>
<article-id pub-id-type="doi">10.20937/rica.2019.35.04.07</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[ASSESSMENT OF A SIMPLE EXTRACTION METHOD TO DETERMINE THE BIOACCESSIBILITY OF POTENTIALLY TOXIC Tl, As, Pb, Cu, Zn AND Cd IN SOILS CONTAMINATED BY MINING-METALLURGICAL WASTE]]></article-title>
<article-title xml:lang="es"><![CDATA[EVALUACIÓN DE UN MÉTODO DE EXTRACCIÓN SIMPLE PARA DETERMINAR LA BIOACCESIBILIDAD DE Tl, As, Pb, Cu, Zn Y Cd POTENCIALMENTE TÓXICOS EN SUELOS CONTAMINADOS POR RESIDUOS MINERO-METALÚRGICOS]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Hernández]]></surname>
<given-names><![CDATA[Yusniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santana-Silva]]></surname>
<given-names><![CDATA[Alicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villalobos]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Álvarez]]></surname>
<given-names><![CDATA[Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pi-Puig]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología Laboratorio de Geoquímica Ambiental, Laboratorio Nacional de Geoquímica y Mineralogía (LANGEM)]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Connecticut Department of Civil and Environmental Engineering ]]></institution>
<addr-line><![CDATA[ Connecticut]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geofísica Laboratorio de ICP-MS]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología Laboratorio de DRX]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></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>4</numero>
<fpage>849</fpage>
<lpage>868</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992019000400849&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992019000400849&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992019000400849&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The potential to determine the gastric bioaccessibility (BA) of Tl, As, Pb(II), Cu(II), Zn(II) and Cd(II) using a simple extraction method was evaluated in selected samples from soils contaminated by mining and metallurgical wastes. The SBRC (Solubility and Bioavailability Research Consortium) test was used as a gastric BA comparative method versus a simple extraction method using HCl solution at pH 1.5. High correlations (r &#8805; 0.98, p &#706; 0.01) were obtained between the two extraction methods for Cd(II), Cu(II), Tl and Zn(II), in all samples investigated. Bioaccessible As, however, only showed a high correlation in the metallurgical area (r = 0.99, p &#706; 0.01), but not in the mining area (r = 0.88, p &#706; 0.01). Conversely, Pb(II) showed a better correlation in samples from the mining area (r = 0.99, p &#706; 0.01) than in those of the metallurgical area (r = 0.92, p &#706; 0.01). Three experimental conditions of the extraction procedures ensured the high correlations observed: (1) Maintaining a strict pH control of 1.5 (± 0.1), (2) a stirring time of 1 h (± 1 min), and (3) filtration of the extraction mixture through a membrane of small pore size (0.05 µm). Bioaccessible Tl was detected in all samples, a fact that has not been reported before in these environments, and alerts to potential health risks not previously identified.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El potencial para determinar la bioaccesibilidad gástrica (BA) de Tl, As, Pb(II), Cu(II), Zn(II) y Cd(II) utilizando un método de extracción simple se evaluó en muestras seleccionadas de suelos contaminados por residuos mineros y metalúrgicos. La prueba SBRC (Consorcio de Investigación de Solubilidad y Biodisponibilidad) se usó como un método comparativo de BA gástrica versus un método de extracción simple que utiliza una solución de HCl a pH 1.5. Se obtuvieron altas correlaciones (r &#8805; 0.98, p &#706; 0.01) entre los dos métodos de extracción para Cd(II), Cu(II), Tl y Zn(II), en todas las muestras investigadas. El arsénico bioaccesible, sin embargo, sólo mostró una alta correlación en el área metalúrgica (r = 0.99, p &#706; 0.01), pero no en el área minera (r = 0.88, p &#706; 0.01). Al contrario, el Pb(II) mostró una mejor correlación en las muestras del área minera (r = 0.99, p &#706; 0.01) que en las del área metalúrgica (r = 0.92, p &#706; 0.01). Tres condiciones experimentales de los procedimientos de extracción aseguraron las altas correlaciones observadas: (1) Mantener un control estricto del pH a 1.5 (± 0.1), (2) un tiempo de agitación de 1 h (± 1 min), y (3) filtración de la mezcla de extracción a través de una membrana de tamaño de poro pequeño (0.05 µm). Se detectó T1 bioaccesible en todas las muestras, un hecho que no se había informado anteriormente en estos entornos y alerta sobre riesgos potenciales para la salud no identificados previamente.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[HCl]]></kwd>
<kwd lng="en"><![CDATA[SBRC]]></kwd>
<kwd lng="en"><![CDATA[pH]]></kwd>
<kwd lng="en"><![CDATA[mining residues]]></kwd>
<kwd lng="en"><![CDATA[speciation]]></kwd>
<kwd lng="es"><![CDATA[HCl]]></kwd>
<kwd lng="es"><![CDATA[SBRC]]></kwd>
<kwd lng="es"><![CDATA[pH]]></kwd>
<kwd lng="es"><![CDATA[residuos mineros]]></kwd>
<kwd lng="es"><![CDATA[especiación]]></kwd>
</kwd-group>
</article-meta>
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