<?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>S0188-49992020000100033</article-id>
<article-id pub-id-type="doi">10.20937/rica.2020.36.53317</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[MERCURIO EN UN ARROYO ALTOANDINO CON ALTO IMPACTO POR MINERÍA AURÍFERA ARTESANAL (LA RINCONADA, PUNO, PERÚ)]]></article-title>
<article-title xml:lang="en"><![CDATA[MERCURY IN A HIGH ALTITUDE ANDES STREAM WITH STRONG IMPACT BY ARTISANAL AURIFFER MINING (LA RINCONADA, PUNO, PERU)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Loza del Carpio]]></surname>
<given-names><![CDATA[Alfredo Ludwig]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ccancapa Salcedo]]></surname>
<given-names><![CDATA[Yenny]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional del Altiplano Puno Facultad de Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[Puno ]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>36</volume>
<numero>1</numero>
<fpage>33</fpage>
<lpage>44</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992020000100033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992020000100033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992020000100033&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La Rinconada, en los altos Andes al sur del Perú, es una localidad dedicada fuertemente a la minería aurífera artesanal, donde relaves y desechos se vierten en arroyos de cabeceras de cuenca. Por ello se evaluó el mercurio en agua superficial y sedimentos del arroyo Lunar de Oro, en sus nacientes en el nevado Ananea. Se muestrearon cuatro puntos en los meses de diciembre de 2014, y enero y marzo de 2015, y se determinó el mercurio en ambos compartimentos por el método de espectrofotometría de fluorescencia atómica (EPA 245.2), evaluándose adicionalmente pH, oxígeno disuelto, conductividad eléctrica, sólidos disueltos totales y temperatura mediante multiparámetro y en laboratorio. En los cuatro puntos de muestreo, el mercurio en agua presentó niveles similares, variando de &lt; 0.00005 a 0.00043 mg/L (n = 12). Según el mes, marzo presentó mayores concentraciones (0.00034 ± 0.000032 mg/L), las cuales se relacionan con el menor caudal, superando las normas peruanas y los estándares canadienses de calidad ambiental (CEQG, por sus siglas en inglés); el pH registró un promedio general de 3.44 ± 0.12 y el oxígeno disuelto 2.84 ± 0.23 mg/L, valores que confirman su baja calidad. Los sedimentos tuvieron concentraciones de mercurio entre 9 y 373 mg/kg, sin diferencias significativas entre zonas y meses. El 100 % de las muestras superaron los límites de la NOAA (EUA) y de los CEQG. Los índices de acumulación ratificaron que el lugar se encuentra extremadamente contaminado por mercurio, y representa un alto riesgo para la salud pública y los ecosistemas involucrados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT La Rinconada, in the high Andes at southern Peru, is a town heavily engaged in artisanal gold mining, where tailings and waste are dumped into streams of river headwaters. For this reason, mercury was evaluated in surface water and sediments of the Lunar de Oro stream, in its origins at the Ananea glacier. Four points were sampled in the months of December 2014, and January and March 2015. In both segments, mercury was determined by atomic fluorescence spectrophotometry (EPA 245.2), and pH, dissolved oxygen, electrical conductivity, total dissolved solids and temperature were determined by multiparameter and in laboratory. In the four sampling points, mercury in water presented similar levels, with values between &lt; 0.00005 and 0.00043 mg/L (n = 12), although in March, related to a lower flow, higher levels were determined (0.00034 ± 0.000032 mg/L), surpassing the Peruvian standards and the Canadian Environmental Quality Guidelines (CEQG); pH recorded an average of 3.44 ± 0.12 and oxygen 2.84 ± 0.23 mg/L, values that confirmed its low quality. Sediments showed values between 9 and 373 mg/kg, with no significant differences between zones and months, exceeding NOAA and CEQG limits for 100 % of the samples. Pollution rates confirmed that the site is extremely contaminated by mercury, corroborating its high risk for public health and the ecosystems involved.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[evaluación]]></kwd>
<kwd lng="es"><![CDATA[Lunar de Oro]]></kwd>
<kwd lng="es"><![CDATA[cuenca del Titicaca]]></kwd>
<kwd lng="es"><![CDATA[minería]]></kwd>
<kwd lng="en"><![CDATA[pollution]]></kwd>
<kwd lng="en"><![CDATA[assessment]]></kwd>
<kwd lng="en"><![CDATA[Lunar de Oro]]></kwd>
<kwd lng="en"><![CDATA[Titicaca basin]]></kwd>
<kwd lng="en"><![CDATA[mining]]></kwd>
</kwd-group>
</article-meta>
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