<?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>S0188-49992017000400655</article-id>
<article-id pub-id-type="doi">10.20937/rica.2017.33.04.09</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[MERCURY POLLUTION ASSESSMENT OF MINING WASTES AND SOILS FROM FORMER SILVER AMALGAMATION AREA IN NORTH-CENTRAL MEXICO]]></article-title>
<article-title xml:lang="es"><![CDATA[EVALUACIÓN DE LA CONTAMINACIÓN POR MERCURIO EN RESIDUOS MINEROS Y SUELOS DE UNA ANTIGUA ÁREA DE AMALGAMACIÓN DE PLATA EN EL CENTRO-NORTE DE MÉXICO]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leura Vicencio]]></surname>
<given-names><![CDATA[Adriana Karina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrizales Yañez]]></surname>
<given-names><![CDATA[Leticia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Razo Soto]]></surname>
<given-names><![CDATA[Israel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Programas Multidisciplinarios de Posgrado en Ciencias Ambientales ]]></institution>
<addr-line><![CDATA[San Luis Potosí San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Centro de Investigación Aplicada en Ambiente y Salud Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología]]></institution>
<addr-line><![CDATA[San Luis Potosí San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[San Luis Potosí San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<volume>33</volume>
<numero>4</numero>
<fpage>655</fpage>
<lpage>669</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992017000400655&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992017000400655&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992017000400655&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Mining wastes and soils from Cedral, San Luis Potosí, Mexico, were studied to assess mercury (Hg) pollution in areas of historical silver (Ag) amalgamation and in areas where amalgamation mining wastes were recently reprocessed for Hg and Ag recovery. The total, soluble and bioaccessible Hg concentrations from eight mining waste and nine soil cores were determined at varying depths, which fluctuated from the surface up to 1.0 m depth. The total Hg concentrations in the mining wastes samples ranged from 8 to 548 mg/kg. The total Hg concentrations in the soil samples were lower (1 to 116 mg/kg) than those in the mining wastes. Eighty percent of the soil samples exceeded the maximum permissible limit for residential soils according to the Mexican regulations, demonstrating the impacts of the amalgamation process in Cedral. The soluble Hg concentrations were low, from 0.009 to 0.32 mg/kg in the mining wastes, and from 0.003 to 0.02 mg/kg in soils. The latter represents 0.007 % to 0.54 % and &lt; 0.03 % of total Hg, from mining wastes and soils, respectively, indicating low aqueous Hg transport during rainfall events. The bioaccessible Hg concentrations in the mining waste samples (0.1 to 60 mg/kg) and soil samples (0.1 to 17 mg/kg), suggested that humans could be exposed to this toxic element through the accidental ingestion of mining wastes and soil particles. Although the total Hg concentrations in the mining wastes decreased after reprocessing, the soluble and bioaccessible Hg concentrations increased.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se estudiaron residuos mineros y suelos de Cedral, San Luis Potosí, México, para evaluar la contaminación por mercurio (Hg) en áreas de amalgamación histórica de plata (Ag) y de reprocesamiento reciente de residuos de amalgamación para la recuperación de Hg y Ag. Se obtuvieron ocho perfiles de hasta 1 m de profundidad de depósitos de residuos mineros y nueve de suelo, de los cuales se recolectaron muestras a diferentes profundidades para la determinación de concentraciones totales, solubles y bioaccesibles de Hg. Las concentraciones totales de Hg en residuos mineros variaron entre 8 y 548 mg/kg, mientras que en suelos las concentraciones se presentaron en un rango de entre 1 y 116 mg/kg. Se encontró que el 80 % de las muestras de suelo analizadas superaron el límite máximo permisible de Hg para suelo de uso residencial establecido en la normatividad mexicana, lo que demuestra el severo impacto de la amalgamación y del reprocesamiento de jales de amalgamación en Cedral. Con relación a las concentraciones solubles de Hg, en las muestras de residuos se obtuvieron de 0.009 a 0.32 mg/kg y de 0.003 a 0.02 mg/kg para suelos, lo que representa de 0.007 % a 0.54 % y &lt; 0.03 % del total de Hg contenido en residuos mineros y suelos, respectivamente. Esto indica un bajo potencial de transporte de especies solubles de Hg durante eventos de lluvia. Finalmente, las concentraciones de Hg bioaccesible obtenidas en el estudio (0.1 a 60 mg/kg en residuos, 0.1 a 17 mg/kg en suelos), sugieren una exposición de la población humana a este elemento tóxico a través de la ingestión accidental de partículas de residuos mineros y de suelo. Además, quedó evidenciado que el reprocesamiento de residuos de amalgamación disminuyó las concentraciones totales de Hg, pero incrementó las concentraciones solubles y bioaccesibles de Hg.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[patio process]]></kwd>
<kwd lng="en"><![CDATA[tailings]]></kwd>
<kwd lng="en"><![CDATA[reprocessing]]></kwd>
<kwd lng="en"><![CDATA[solubility]]></kwd>
<kwd lng="en"><![CDATA[bioaccessibility]]></kwd>
<kwd lng="es"><![CDATA[beneficio de patio]]></kwd>
<kwd lng="es"><![CDATA[jales]]></kwd>
<kwd lng="es"><![CDATA[reprocesamiento]]></kwd>
<kwd lng="es"><![CDATA[solubilidad]]></kwd>
<kwd lng="es"><![CDATA[bioaccesibilidad]]></kwd>
</kwd-group>
</article-meta>
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