<?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>S0188-49992024000100129</article-id>
<article-id pub-id-type="doi">10.20937/rica.55079</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The toxic legacy of artisanal and informal mining: XRF and gis analysis of soil contamination by Hg, Pb and As in the Secocha annex, Camaná, Peru]]></article-title>
<article-title xml:lang="es"><![CDATA[El legado tóxico de la minería artesanal e informal: análisis FRX y SIG de contaminación del suelo por Hg, Pb y As en el Anexo Secocha, Camaná, Perú]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas Fernández]]></surname>
<given-names><![CDATA[Carlos Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Minaya Lizárraga]]></surname>
<given-names><![CDATA[Armando Adolfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Málaga Cornejo]]></surname>
<given-names><![CDATA[Miriam Vilma María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de San Agustín de Arequipa  ]]></institution>
<addr-line><![CDATA[Arequipa ]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>40</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992024000100129&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992024000100129&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992024000100129&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Hg, used as the main input in the gold amalgamation process in artisanal mining, along with lead Pb and As present in the toxic waste resulting from mining activity, cause serious effects on the environment and human health, as it occurs in the Secocha annex (Camaná, Peru). The objectives of the present study were to determine the concentrations of Hg, Pb, and As in the soil of the Secocha annex, evaluate the level of contamination of the site, determine the spatial distribution of contamination and the concentrations of the evaluated elements, and determine the origin of these contaminants. To achieve these objectives, satellite imagery, field sampling, X-ray fluorescence techniques, soil quality environmental regulations, geo-accumulation indices (Igeo), and geographic information system techniques were used. The results revealed maximum concentrations of 350 and 176.6 mg/kg for Hg and Pb, respectively. Of the 72 soil samples collected, the concentrations of Hg located within the urban/industrial area, where gold recovery activities are carried out, exceeded environmental regulations to a greater extent. In turn, the calculated Igeo revealed extreme soil contamination (5 &lt; Igeo) due to the presence of Hg in most of the study area (95%), followed by moderate to heavy contamination (2 &lt; Igeo &lt; 3) due to the presence of Pb and As (0.5 and 5%, respectively). To reduce contamination and the concentrations of the evaluated elements, it is recommended to carry out studies to reuse inputs, change gold processing methodologies, and/or relocate the generated waste.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El Hg, utilizado como insumo principal en el proceso de amalgamación del oro en la minería artesanal, junto con el Pb y el As presentes en los desechos tóxicos resultantes de la actividad minera, provocan graves efectos en el medio ambiente y en la salud humana, tal como ocurre en el anexo de Secocha (Camaná, Perú). Entre los objetivos del presente estudio se consideró determinar las concentraciones de Hg, Pb y As en el suelo del anexo de Secocha, evaluar el nivel de la contaminación del lugar, determinar la distribución espacial de la contaminación y las concentraciones de los elementos evaluados, y determinar el origen de estos contaminantes. Para alcanzar estos objetivos se utilizaron imágenes de satélite, muestreo en campo, técnicas de fluorescencia de rayos X, normativas ambientales de calidad de suelo, índices de geo-acumulación (Igeo) y técnicas de sistemas de información geográfica. Los resultados revelaron concentraciones máximas de 350 mg/kg y 176.6 mg/kg para Hg y Pb, respectivamente. De las 72 muestras de suelo recolectadas, las concentraciones de Hg ubicadas dentro del área urbano/industrial, donde se llevan a cabo actividades de recuperación de oro, fueron las que superaron en mayor medida las normativas ambientales. A su vez, los Igeo calculados mostraron una contaminación extrema del suelo (5 &lt; Igeo) por la presencia de Hg en la mayor parte del área de estudio (95 %), seguido por una contaminación de moderada a fuerte (2 &lt; Igeo &lt; 3) por la presencia de Pb y As (0.5 y 5 %, respectivamente). Con la finalidad de reducir la contaminación y las concentraciones de los elementos evaluados, se recomienda llevar a cabo estudios para la reutilización de insumos, cambiar de metodologías para el procesamiento del oro y/o reubicar los desechos generados.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Hg]]></kwd>
<kwd lng="en"><![CDATA[Pb]]></kwd>
<kwd lng="en"><![CDATA[As]]></kwd>
<kwd lng="en"><![CDATA[Igeo]]></kwd>
<kwd lng="en"><![CDATA[X-ray fluorescence]]></kwd>
<kwd lng="es"><![CDATA[Hg]]></kwd>
<kwd lng="es"><![CDATA[Pb]]></kwd>
<kwd lng="es"><![CDATA[As]]></kwd>
<kwd lng="es"><![CDATA[Igeo]]></kwd>
<kwd lng="es"><![CDATA[fluorescencia de rayos X]]></kwd>
</kwd-group>
</article-meta>
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