<?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>S0188-49992019000200407</article-id>
<article-id pub-id-type="doi">10.20937/rica.2019.35.02.12</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[DETERMINACIÓN DE LA DISTRIBUCIÓN DE CONTAMINANTES EMERGENTES EN AGUA INTERSTICIAL EN SEDIMENTOS DE HUMEDAL MEDIANTE LA OPTIMIZACIÓN Y VALIDACIÓN DE UN MÉTODO ANALÍTICO]]></article-title>
<article-title xml:lang="en"><![CDATA[DETERMINATION OF THE DISTRIBUTION OF EMERGING POLLUTANTS IN INTERSTITIAL WATER FROM WETLAND SEDIMENTS THROUGH THE OPTIMIZATION AND VALIDATION OF AN ANALYTICAL METHOD]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Quiroz]]></surname>
<given-names><![CDATA[Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Meza]]></surname>
<given-names><![CDATA[Diego]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojo-Callejas]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ponce de León-Hill]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Área de Biología]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>35</volume>
<numero>2</numero>
<fpage>407</fpage>
<lpage>419</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992019000200407&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992019000200407&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992019000200407&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El presente trabajo muestra la metodología (estudio de un método) para el análisis de cuatro contaminantes emergentes. Cada contaminante emergente estudiado, representa a una familia de interés de los contaminantes emergentes (un compuesto estrogénico, uno antibacteriano, un fármaco ácido y una fragancia). El método se optimizó para ser utilizado en una matriz ambiental compleja, como el agua intersticial de sedimentos de un humedal con alto contenido de materia orgánica. La extracción de los compuestos se llevó a cabo mediante la técnica de extracción en fase sólida y se cuantificó mediante cromatografía de gases con espectrometría de masas en modo de monitorización de ion único. El método se ratificó utilizando el &#8220;Proceso de validación del método de laboratorio único&#8221; mediante la determinación de los parámetros de validación del método. El método optimizado se aplicó al análisis del agua intersticial de los sedimentos de los canales de la zona agrícola periurbana de Xochimilco, México. Este estudio preliminar mostró que el punto de muestreo cercano al área de descarga de aguas residuales de la planta de tratamiento de aguas residuales de tratamiento secundario tenía la mayor concentración de contaminantes emergentes. Además, se observó una relación inversamente proporcional entre las concentraciones de ibuprofeno y almizcle cetona y la concentración de materia orgánica en los sedimentos. La optimización del método y la ratificación con muestras de agua intersticial de sedimentos del humedal, mostraron su valor para la evaluación de la presencia y distribución de contaminantes emergentes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The present work shows the methodology (study of a method) for the analysis of four emerging pollutants. Each studied pollutant represents a family from emerging pollutants (an estrogenic compound, an antibacterial, a pharmaceutical and a fragrance). The method was optimized to be used in a complex environmental matrix such as sediment interstitial water of a wetland with high organic matter content. The extraction of the compounds was carried out by solid phase extraction technique and quantified by gas chromatography with mass spectrometry in single ion monitoring mode. The method was validated using the &#8220;Single Laboratory Method Validation Process&#8221; through the determination of the performance parameters of the method. The optimized method was applied to the analysis of sediment interstitial water from the canals of the periurban agricultural zone of Xochimilco, Mexico. This preliminary study showed that the sampling point close to the wastewater discharge area from the secondary treatment wastewater plant had the highest concentration of emerging pollutants. Also, an inversely proportional relationship was observed between the concentrations of ibuprofen and musk with the concentration of organic matter in the sediments. The optimization of the method and the ratification with sediment interstitial water samples from the wetland, showed the worthiness of the method for the evaluation of the presence and distribution of emerging pollutants.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[productos farmacéuticos activos]]></kwd>
<kwd lng="es"><![CDATA[agua de poro]]></kwd>
<kwd lng="es"><![CDATA[Xochimilco]]></kwd>
<kwd lng="es"><![CDATA[cromatografía de gases acoplada a espectrometría de masas]]></kwd>
<kwd lng="en"><![CDATA[active pharmaceutical compounds]]></kwd>
<kwd lng="en"><![CDATA[pore water]]></kwd>
<kwd lng="en"><![CDATA[Xochimilco]]></kwd>
<kwd lng="en"><![CDATA[gas chromatography coupled to mass spectrometry]]></kwd>
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</article-meta>
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