<?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>2224-5421</journal-id>
<journal-title><![CDATA[Revista Cubana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cub Quim]]></abbrev-journal-title>
<issn>2224-5421</issn>
<publisher>
<publisher-name><![CDATA[Ediciones UO, Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-54212021000300345</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cuantificación de níquel y cobalto en aguas residuales de una planta de procesamiento de minerales auríferos]]></article-title>
<article-title xml:lang="en"><![CDATA[Quantification of nickel and cobalt in wastewater from a gold mineral processing plant]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Rivero]]></surname>
<given-names><![CDATA[Rosa Amalia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ribalta-Quesada]]></surname>
<given-names><![CDATA[Juan Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-González]]></surname>
<given-names><![CDATA[Surey]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez-Prieto]]></surname>
<given-names><![CDATA[Yamell]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad Química y Farmacia Departamento de Química]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Centro de Estudios de Química Aplicada ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>33</volume>
<numero>3</numero>
<fpage>345</fpage>
<lpage>366</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-54212021000300345&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-54212021000300345&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-54212021000300345&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En el presente trabajo se verificaron los métodos de cuantificación de níquel y cobalto por espectrometría de absorción atómica, en aguas residuales de una planta de procesamiento de minerales auríferos. Para ambos métodos se evaluaron la linealidad, la precisión, la veracidad y los límites de detección y cuantificación, comprobándose que son adecuados para las cuantificaciones de estos analitos, según los fines propuestos. Las concentraciones obtenidas de los elementos químicos en las muestras de agua residual analizadas, resultaron superiores a los límites máximos permisibles establecidos para el vertimiento de dichas aguas en ríos, embalses y zonas hidrogeológicas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In the present work, the methods for the quantification of nickel and cobalt by atomic absorption spectrometry in wastewater from a gold ore processing plant were verified. Linearity, precision, trueness and detection and quantification limits were evaluated for both methods, proving that they are adequate for the quantifications of these analytes, according to the proposed purposes. The concentrations obtained for the chemical elements in the wastewater samples analyzed were higher than the maximum permissible limits established for the discharge of such water into rivers, reservoirs and hydrogeological zones.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aguas residuales]]></kwd>
<kwd lng="es"><![CDATA[níquel]]></kwd>
<kwd lng="es"><![CDATA[cobalto]]></kwd>
<kwd lng="es"><![CDATA[verificación]]></kwd>
<kwd lng="es"><![CDATA[espectrometría de absorción atómica]]></kwd>
<kwd lng="en"><![CDATA[wastewater]]></kwd>
<kwd lng="en"><![CDATA[nickel]]></kwd>
<kwd lng="en"><![CDATA[cobalt]]></kwd>
<kwd lng="en"><![CDATA[verification]]></kwd>
<kwd lng="en"><![CDATA[atomic absorption spectrometry]]></kwd>
</kwd-group>
</article-meta>
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