<?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>S0188-49992018000100093</article-id>
<article-id pub-id-type="doi">10.20937/rica.2018.34.01.08</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[IMPACTO DE LA MINERÍA DEL ORO ASOCIADO CON LA CONTAMINACIÓN POR MERCURIO EN SUELO SUPERFICIAL DE SAN MARTÍN DE LOBA, SUR DE BOLÍVAR (COLOMBIA)]]></article-title>
<article-title xml:lang="en"><![CDATA[IMPACT OF GOLD MINING ASSOCIATED WITH MERCURY CONTAMINATION IN SURFACE SOIL OF SAN MARTIN DE LOBA, SOUTH OF BOLIVAR (COLOMBIA)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rocha-Román]]></surname>
<given-names><![CDATA[Leobardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olivero-Verbel]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caballero-Gallardo]]></surname>
<given-names><![CDATA[Karina Rocío]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Cartagena Facultad de Ciencias Farmacéuticas Grupo de Química Ambiental y Computacional]]></institution>
<addr-line><![CDATA[Cartagena ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>34</volume>
<numero>1</numero>
<fpage>93</fpage>
<lpage>102</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992018000100093&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992018000100093&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992018000100093&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Las actividades humanas han aumentado la contaminación por mercurio (Hg) en los ambientes terrestres, especialmente en áreas de minería de oro. El objetivo de este estudio fue evaluar las concentraciones de mercurio total (Hg-t) en muestras de suelo superficial de San Martin de Loba, sur de Bolívar (Colombia), así como determinar el nivel de contaminación en el suelo. Un total de 202 muestras de suelo superficial fueron colectadas en San Martín de Loba. Los niveles de Hg-t fueron medidos por atomización electrotérmica y espectroscopia de absorción atómica. Las concentraciones de Hg-t variaron de 0.002 a 23.83 &#956;g/g, con un valor medio de 3.40 ± 0.36 &#956;g/g, el cual es ligeramente más alto que para el Hg en suelo a nivel mundial. El índice de geo-acumulación (Igeo) para suelo alcanzó valores superiores a 5, indicando una contaminación extrema (Clase 6) en el 17 % de las muestras, mientras que el 70 % fueron Clase 5 (fuertemente a extremadamente contaminado). Este estudio también ofrece un mapa de riesgos para evaluar las posibles repercusiones negativas. En conclusión, el municipio de San Martín de Loba puede considerarse una zona fuertemente contaminada con alto contenido de Hg. La tecnología utilizada para extraer oro a lo largo de los procesos de amalgamación provoca un alto grado de contaminación por Hg en torno a esta área de minería de oro. Por lo tanto, deben considerarse métodos alternativos de extracción para reducir los niveles de Hg que pueden liberarse al ambiente y afectar la salud humana.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Human activities have increased mercury (Hg) contamination of terrestrial environments, especially gold mining areas. The aim of this study was to evaluate total Hg concentrations (T-Hg) in surface soil samples of San Martín de Loba, south of Bolívar (Colombia), to determine their Hg contamination level. For that purpose, 202 surface soil samples were collected. T-Hg levels were measured by electrothermal atomization and atomic absorption spectroscopy. The T-Hg surface soil concentrations ranged between 0.002 and 23.83 &#956;g/g, with a median value of 3.40 ± 0.36 &#956;g/g, which is slightly higher than the international Hg soil levels. The geoaccumulation index (Igeo) for soils reached values greater than 5, indicating extreme pollution (Class 6) in 17 % of samples, while 70 % was Class 5 (strongly to extremely polluted). This study also provides a risk map to evaluate potential negative repercussions. In conclusion, the municipality of San Martín de Loba can be considered as a strongly polluted area with high Hg content. Technology used to extract gold through amalgamation processes causes a high degree of Hg pollution around this gold mining area. Therefore, alternative extraction methods should be considered to reduce Hg levels that can be released into the environment and affect human health.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[toxicidad]]></kwd>
<kwd lng="es"><![CDATA[ambiente]]></kwd>
<kwd lng="es"><![CDATA[actividades antrópicas]]></kwd>
<kwd lng="es"><![CDATA[salud humana]]></kwd>
<kwd lng="en"><![CDATA[toxicity]]></kwd>
<kwd lng="en"><![CDATA[environment]]></kwd>
<kwd lng="en"><![CDATA[anthropogenic activities]]></kwd>
<kwd lng="en"><![CDATA[human health]]></kwd>
</kwd-group>
</article-meta>
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