<?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>2007-4018</journal-id>
<journal-title><![CDATA[Revista Chapingo serie ciencias forestales y del ambiente]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Chapingo ser. cienc. for. ambient]]></abbrev-journal-title>
<issn>2007-4018</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Chapingo, Coordinación de Revistas Institucionales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-40182020000100003</article-id>
<article-id pub-id-type="doi">10.5154/r.rchscfa.2019.01.002</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The color of urban dust as an indicator of heavy metal pollution]]></article-title>
<article-title xml:lang="es"><![CDATA[El color del polvo urbano como indicador de contaminación por metales pesados]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Delgado]]></surname>
<given-names><![CDATA[Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cejudo]]></surname>
<given-names><![CDATA[Rubén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilera]]></surname>
<given-names><![CDATA[Anahí]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gogichaishvili]]></surname>
<given-names><![CDATA[Avto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bautista]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Centro de Investigaciones en Geografía Ambiental Laboratorio Universitario de Geofísica Ambiental]]></institution>
<addr-line><![CDATA[Morelia Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geofísica Laboratorio Universitario de Geofísica Ambiental]]></institution>
<addr-line><![CDATA[Morelia Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Posgrado en Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[Morelia Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>26</volume>
<numero>1</numero>
<fpage>3</fpage>
<lpage>15</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40182020000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40182020000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40182020000100003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  Urban dust contains heavy metals (HMs) that pose a risk to human health.  Objective:  To evaluate the color of urban dust as an indicator of HM pollution in Mexico City.  Materials and methods:  Color and HMs (Ba, Cr, Cu, Pb, Mn, Ni, V and Zn) were measured in 455 dust samples, and redness and saturation rates were calculated. Based on color, groups of samples were formed using cluster analysis. Multiple regression analysis between HMs and indices by color groups was performed, as well as a Kruskal-Wallis analysis of HMs by color groups.  Results and discussion:  Urban dust samples were classified as dark grayish brown (I), dark gray (II), dark olive brown (III), very dark gray (IV), grayish brown (V) and black (VI). Multiple linear regressions between color indices and HMs showed high and significant correlation (P &lt; 0.05) in groups I, II, III and IV. Urban dust HMs were generally found in the order Zn &gt; Mn &gt; Ba &gt; Pb &gt; Cu &gt; Cr &gt; Ni &gt; V. Also, Cr, Cu, Ni, Pb and Zn showed significant differences (P &lt; 0.05) among the color groups; the samples from very dark gray to black were the most polluted, and those of dark grayish brown had lower HM contents.  Conclusions:  Urban dust color is an indicator of heavy metal pollution in Mexico City.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  El polvo urbano contiene metales pesados (MP) que representan un riesgo para la salud humana.  Objetivo:  Evaluar el color del polvo urbano como indicador de la contaminación por MP en la Ciudad de México.  Materiales y métodos:  El color y los MP (Ba, Cr, Cu, Pb, Mn, Ni, V y Zn) se midieron en 455 muestras de polvo, y los índices de rojez y saturación se calcularon. Con base en el color, se formaron grupos de muestras utilizando un análisis de conglomerados. Se hicieron análisis de regresión múltiple entre los MP y los índices por grupos de color, y análisis de Kruskal-Wallis de los MP por grupos de color.  Resultados y discusión:  Las muestras de polvo urbano se clasificaron en marrón grisáceo obscuro (I), gris obscuro (II), marrón oliva obscuro (III), gris muy obscuro (IV), marrón grisáceo (V) y negro (VI). Las regresiones lineales múltiples entre los índices de color y los MP mostraron correlación alta y significativa (P &lt; 0.05) en los grupos I, II, III y IV. Los MP del polvo urbano se encontraron de manera general en el orden Zn &gt; Mn &gt; Ba &gt; Pb &gt; Cu &gt; Cr &gt; Ni &gt; V. El Cr, Cu, Ni, Pb y Zn presentaron diferencias significativas (P &lt; 0.05) entre los grupos de color; las muestras de color gris muy obscuro a negro fueron las más contaminadas, y las de color marrón grisáceo obscuro tuvieron contenidos menores de MP.  Conclusiones:  El color del polvo urbano es un indicador de la contaminación por metales pesados en la Ciudad de México.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Mexico City; redness index]]></kwd>
<kwd lng="en"><![CDATA[saturation index]]></kwd>
<kwd lng="en"><![CDATA[Zinc, Munsell]]></kwd>
<kwd lng="es"><![CDATA[Ciudad de México]]></kwd>
<kwd lng="es"><![CDATA[índice de rojez]]></kwd>
<kwd lng="es"><![CDATA[índice de saturación]]></kwd>
<kwd lng="es"><![CDATA[zinc]]></kwd>
<kwd lng="es"><![CDATA[Munsell]]></kwd>
</kwd-group>
</article-meta>
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