<?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>1405-3322</journal-id>
<journal-title><![CDATA[Boletín de la Sociedad Geológica Mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Soc. Geol. Mex]]></abbrev-journal-title>
<issn>1405-3322</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Geológica Mexicana A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-33222022000200110</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2022v74n2a121221</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Fraccionamiento químico de metales pesados y metaloides potencialmente tóxicos en lodos generados por la planta de tratamiento de agua residual Taxco de Alarcón, Guerrero, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Chemical fractionation of potentially toxic heavy metals and metalloids in residual mud obtained from the wastewater treatment plant at Taxco de Alarcón, Guerrero, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Díaz]]></surname>
<given-names><![CDATA[Jazmin Alaide]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alvira-Serrano]]></surname>
<given-names><![CDATA[Luis Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Talavera-Mendoza]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sarmiento-Villagrana]]></surname>
<given-names><![CDATA[Alicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Flores]]></surname>
<given-names><![CDATA[Giovanni]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Guerrero Escuela Superior de Ciencias de la Tierra ]]></institution>
<addr-line><![CDATA[ Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Guerrero Facultad de Ciencias Agropecuarias y Ambientales ]]></institution>
<addr-line><![CDATA[ Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Guerrero Escuela Superior de Ciencias de la Tierra ]]></institution>
<addr-line><![CDATA[ Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>74</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222022000200110&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222022000200110&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222022000200110&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los objetivos de este trabajo fueron: i) identificar y cuantificar metales pesados y metaloides potencialmente tóxicos presentes en los lodos residuales generados por la planta de tratamiento de agua residual &#8220;Taxco de Alarcón&#8221; en Guerrero, México; ii) determinar el potencial de geodisponibilidad de los metales pesados y metaloides potencialmente tóxicos mediante una extracción química secuencial, y, iii) proporcionar una metodología detallada para realizar una digestión total y extracción química secuencial empleando lodos residuales. La metodología principal consistió en realizar una digestión total y una extracción química secuencial empleando lodos residuales. El análisis de los metales pesados y metaloides potencialmente tóxicos se realizó mediante espectroscopía de emisión atómica por plasma acoplado inductivamente. A partir de la digestión total se logró identificar y cuantificar a Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Ni, Pb, Sr, V y Zn. Siete metales pesados y metaloides potencialmente tóxicos analizados y considerados por la NOM-004-SEMARNAT-2002 están presentes en los lodos en concentraciones de 51, 50, 38, 752, 153, 190 y 3,134 mg/kg (base seca) para As, Cd, Cr, Cu, Pb, Ni y Zn, respectivamente. Sin embargo, únicamente la concentración de As, Cd, y Zn superan el límite máximo permisible establecido por la norma para poder clasificarlos como lodos de excelente calidad. Por otro lado, el análisis de las diferentes fracciones analizadas obtenidas mediante extracción química secuencial mostró que la mayor concentración de As, Cd y Zn se encuentra principalmente asociada a las fracciones de mayor geodisponibilidad (fracción intercambiable y asociada a carbonatos). Estas concentraciones fueron 34, 34 y 1,723 mg/kg de lodos (base seca) para As, Cd y Zn, respectivamente. Finalmente, en función de los siete metales pesados y un metaloide potencialmente tóxicos analizados y de su concentración total en los lodos residuales de la planta de tratamiento de agua residual de Taxco de Alarcón, los lodos se clasifican como de buena calidad. Esto significa que los lodos residuales tienen potencial para ser aprovechados en uso urbano sin contacto público directo durante su aplicación, en usos forestales, mejoramiento de suelos o uso agrícola en la región.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The goals of this work were: i) to identify and quantify the potentially toxic heavy metals and metalloids in sewage sludge generated by &#8220;Taxco de Alarcón&#8221; wastewater treatment plant; ii) to determine the potentially toxic heavy metals and metalloids speciation through sequential chemical extraction, and iii) to provide a detailed methodological procedure for total digestion and sequential chemical extraction to sewage sludge. The methodology was a total digestion and sequential chemical extraction using sewage sludge. Analysis of potentially toxic heavy metals and metalloids was performed by inductively coupled plasma atomic emission spectroscopy. From total digestion Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Ni, Pb, Sr, V, and Zn were identified and quantified. Seven potentially toxic heavy metals and metalloids analyzed and considered by NOM-004-SEMARNAT-2002 were found in sewage sludge at the following concentrations: 51, 50, 38, 752, 153, 190, and 3,134 mg/kg (dry basis), for As, Cd, Cr, Cu, Pb, Ni, and Zn, respectively. However, the concentration of As, Cd, and Zn exceeds the maximum allowable limit set by the standard to be classified as excellent quality sludge. On the other hand, the analysis of the different fractions obtained by sequential chemical extraction exhibited that the highest concentrations of As, Cd, and Zn are mainly associated with the most geo-available fractions (exchangeable fraction and bound to carbonates). The total concentrations in these fractions were 34, 34, and 1,723 sewage sludge mg/kg (dry basis) for As, Cd, and Zn, respectively. Finally, in function of the seven potentially toxic heavy metals and metalloids analyzed as well as their total concentrations determined in the sewage sludge from the Taxco de Alarcón wastewater treatment plant, the sewage sludge are classified as a good quality sludge. In other words, the sewage sludge have the potential to be used for urban handling without direct contact during its application in forest use or as agricultural soil improvers in the region.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[digestión ácida]]></kwd>
<kwd lng="es"><![CDATA[geodisponibilidad]]></kwd>
<kwd lng="es"><![CDATA[metales pesados y metaloides potencialmente tóxicos]]></kwd>
<kwd lng="es"><![CDATA[extracción química secuencial]]></kwd>
<kwd lng="es"><![CDATA[lodos residuales]]></kwd>
<kwd lng="en"><![CDATA[acid digestion]]></kwd>
<kwd lng="en"><![CDATA[geodisponibility]]></kwd>
<kwd lng="en"><![CDATA[potentially toxic heavy metals and metalloids]]></kwd>
<kwd lng="en"><![CDATA[sequential chemical extraction]]></kwd>
<kwd lng="en"><![CDATA[sewage sludge]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Armienta]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Talavera]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Morton]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Barrera]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geochemistry of metals from mine tailings in Taxco, Mexico]]></article-title>
<source><![CDATA[Bulletin of Environmental Contamination and Toxicology]]></source>
<year>2003</year>
<volume>71</volume>
<page-range>387-93</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Azevedo]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ferracciú]]></surname>
<given-names><![CDATA[L. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Guimaraes]]></surname>
<given-names><![CDATA[L. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biosolids and heavy metals in soils]]></article-title>
<source><![CDATA[Scientia Agricola]]></source>
<year>2003</year>
<volume>60</volume>
<page-range>793-806</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bustamante]]></surname>
<given-names><![CDATA[G. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez]]></surname>
<given-names><![CDATA[E. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Miranda]]></surname>
<given-names><![CDATA[H. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Carta geológico-minera Taxco E14-A68, escala 1: 50, 000]]></source>
<year>2003</year>
<publisher-loc><![CDATA[Pachuca, Hidalgo, México ]]></publisher-loc>
<publisher-name><![CDATA[Convenio del Consejo de Recursos Minerales]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Campa-Uranga]]></surname>
<given-names><![CDATA[M. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Torres de León]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Iriondo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Premo]]></surname>
<given-names><![CDATA[W. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Caracterización geológica de los ensambles metamórficos de Taxco y Taxco el Viejo, Guerrero, México]]></article-title>
<source><![CDATA[Boletín de la Sociedad Geológica Mexicana]]></source>
<year>2012</year>
<volume>64</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>369-85</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Campos Medina]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[García Rojas]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Velázquez Rodríguez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[García Fabila.]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análisis básico del reúso de lodos residuales en suelos de pradera del parque nacional nevado de Toluca]]></article-title>
<source><![CDATA[Quivera, Revista de Estudios Territoriales]]></source>
<year>2009</year>
<volume>11</volume>
<page-range>35-51</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cardosa Vigueros]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez Camperos]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Vermicomposting of sewage sludge: a new technology for México: Water Science and Technology]]></source>
<year>2002</year>
<volume>46</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>153-8</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carreto-Morales]]></surname>
<given-names><![CDATA[E. Y.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Díaz]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Castrejón]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Talavera-Mendoza]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Flores]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sewage sludge from Taxco de Alarcón wastewater treatment plant as substrate to cultivate Panicum maximum]]></article-title>
<source><![CDATA[Revista Mexicana de Ciencias Geológicas]]></source>
<year>2021</year>
<volume>38</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>164-77</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Castro]]></surname>
<given-names><![CDATA[C. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Henríquez]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Freres]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Posibilidades de aplicación de lodos o biosólidos a los suelos del sector norte de la Región Metropolitana de Santiago]]></article-title>
<source><![CDATA[Revista de Geografía Norte Grande]]></source>
<year>2007</year>
<volume>37</volume>
<page-range>35-45</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<collab>CEC</collab>
<article-title xml:lang=""><![CDATA[Directive concerning sludge amendments. Council of the European Communities]]></article-title>
<source><![CDATA[Official Journal]]></source>
<year>1986</year>
<volume>12</volume>
<page-range>L181-6</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<collab>Comisión Nacional del Agua</collab>
<source><![CDATA[Situación del subsector agua potable, drenaje y saneamiento]]></source>
<year>2017</year>
<publisher-loc><![CDATA[Ciudad de México ]]></publisher-loc>
<publisher-name><![CDATA[Secretaría de Medio Ambiente y Recursos Naturales]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="">
<collab>Comisión Nacional del Agua</collab>
<source><![CDATA[Inventario nacional de plantas municipales de potabilización y de tratamiento de aguas residuales en operación]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cuevas]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Seguel]]></surname>
<given-names><![CDATA[O. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ellies]]></surname>
<given-names><![CDATA[A. Sch.]]></given-names>
</name>
<name>
<surname><![CDATA[Dörner]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efectos de las enmiendas orgánicas sobre las propiedades físicas del suelo con especial referencia a la adición de lodos urbanos]]></article-title>
<source><![CDATA[Revista de la Ciencia del Suelo y Nutrición Vegetal]]></source>
<year>2006</year>
<volume>6</volume>
<page-range>1-12</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[González Flores]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Tornero Campante]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ángeles Cruz]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Bonilla y Fernández]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Concentración total y especiación de metales pesados en biosólidos de origen urbano]]></article-title>
<source><![CDATA[Revista Internacional de Contaminación Ambiental]]></source>
<year>2009</year>
<volume>25</volume>
<page-range>15-22</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[González-Flores]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Tornero-Campante]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sandoval-Castro]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-Magaña]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Gordillo-Martínez]]></surname>
<given-names><![CDATA[A. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biodisponibilidad y fraccionamiento de metales pesados en suelos agrícolas enmendados con biosólidos de origen municipal]]></article-title>
<source><![CDATA[Revista Internacional de Contaminación Ambiental]]></source>
<year>2011</year>
<volume>27</volume>
<page-range>291-301</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Thompson]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Copper-binding ability of dissolved organic matter derived from anaerobically digested biosolids]]></article-title>
<source><![CDATA[Journal of Environmental Quality]]></source>
<year>1999</year>
<volume>28</volume>
<page-range>939-44</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Krauskopf]]></surname>
<given-names><![CDATA[K. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Bird]]></surname>
<given-names><![CDATA[D. K.]]></given-names>
</name>
</person-group>
<source><![CDATA[Introduction to geochemistry]]></source>
<year>2003</year>
<publisher-loc><![CDATA[USA ]]></publisher-loc>
<publisher-name><![CDATA[McGraw Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Limón Macías]]></surname>
<given-names><![CDATA[J. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Los lodos de las plantas de tratamiento de aguas residuales ¿problema o recurso?]]></source>
<year>2013</year>
<publisher-loc><![CDATA[Guadalajara, Jalisco, México ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Autónoma de Guadalajara]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[López Julián]]></surname>
<given-names><![CDATA[P. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandado Collado]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Extracciones químicas secuenciales de metales pesados. Aplicación en ciencias geológicas]]></article-title>
<source><![CDATA[Estudios Geológicos]]></source>
<year>2002</year>
<volume>58</volume>
<page-range>133-44</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Loring]]></surname>
<given-names><![CDATA[D. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Rantala]]></surname>
<given-names><![CDATA[R. T. T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Manual for the geochemical analyses of marine sediments and suspended particulate matter]]></article-title>
<source><![CDATA[Earth Science Reviews]]></source>
<year>1992</year>
<volume>32</volume>
<page-range>235-83</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martínez-Alva]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Gheno-Heredia]]></surname>
<given-names><![CDATA[Y. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vieyra-Reyes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Campos]]></surname>
<given-names><![CDATA[A. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Castillo-Cadena]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Arriaga]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Manzur-Quiroga]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Arteaga-Reyes]]></surname>
<given-names><![CDATA[T. T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geodisponibilidad de elementos potencialmente tóxicos en suelos agrícolas que representan riesgo para el ambiente y la salud de la población del nevado de Toluca, México]]></article-title>
<source><![CDATA[Revista Internacional de Contaminación Ambiental]]></source>
<year>2020</year>
<volume>36</volume>
<page-range>847-56</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mathuriya]]></surname>
<given-names><![CDATA[A. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Yakhmi]]></surname>
<given-names><![CDATA[J. V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Microbial fuel cells to recover heavy metals]]></article-title>
<source><![CDATA[Environmental Chemistry Letters]]></source>
<year>2014</year>
<volume>12</volume>
<page-range>483-94</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Méndez-Ramírez]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Armienta-Hernández]]></surname>
<given-names><![CDATA[M.A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Distribución de Fe, Zn, Pb, Cu, Cd y As originada por residuos mineros y aguas residuales en un transecto del Río Taxco en Guerrero, México]]></article-title>
<source><![CDATA[Revista Mexicana de Ciencias Geológicas]]></source>
<year>2012</year>
<volume>29</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>450-62</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miret]]></surname>
<given-names><![CDATA[M. F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Minería y medio ambiente]]></source>
<year>2012</year>
<publisher-loc><![CDATA[México ]]></publisher-loc>
<publisher-name><![CDATA[Impresora Apolo S.A. de C.V]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ortíz-Hernández]]></surname>
<given-names><![CDATA[L. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Gutiérrez-Ruíz]]></surname>
<given-names><![CDATA[M. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-Salinas]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Propuesta de manejo de los lodos residuales de la planta de tratamiento de la ciudad industrial del valle de Cuernavaca, estado de Morelos, México]]></article-title>
<source><![CDATA[Revista Internacional de Contaminación Ambiental]]></source>
<year>1995</year>
<volume>11</volume>
<page-range>105-15</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ramírez-Nava]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Díaz]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Talavera-Mendoza]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Castrejón]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[García-Mesino]]></surname>
<given-names><![CDATA[R. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Salgado-Souto]]></surname>
<given-names><![CDATA[S. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez-Guzman]]></surname>
<given-names><![CDATA[A. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Sarmiento-Villagrana]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Flores]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Acid mine drainage treatment using chicken eggshell waste]]></article-title>
<source><![CDATA[Revista Internacional de Contaminación Ambiental]]></source>
<year>2022</year>
<volume>38</volume>
</nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodríguez Pacheco]]></surname>
<given-names><![CDATA[R. L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Informes de geodisponibilidad, biodisponibilidad y evaluación y análisis de riesgo para el medioambiente; Zona de Calingasta, Provincia de San Juan, Argentina]]></source>
<year>2011</year>
<page-range>1-86</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salcedo-Pérez]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Vázquez-Alarcón]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Krishnamurthy]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Zamara-Natera]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Álvarez]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez Macías]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de lodos residuales como abono orgánico en suelos volcánicos de uso agrícola y forestal en Jalisco, México]]></article-title>
<source><![CDATA[Interciencia]]></source>
<year>2007</year>
<volume>32</volume>
<page-range>115-20</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez-Montoya]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Talavera-Mendoza]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Flores]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz-Villaseñor]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez-Guzmán]]></surname>
<given-names><![CDATA[A. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Galarza-Brito]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Potentially toxic elements determination and chemical-microbiological analysis of potable water in Taxco de Alarcón, Guerrero]]></article-title>
<source><![CDATA[Revista Mexicana de Ciencias Geológicas]]></source>
<year>2019</year>
<volume>36</volume>
<page-range>147-58</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<collab>Secretaria de Medio Ambiente y Recursos Naturales</collab>
<article-title xml:lang=""><![CDATA[Protección ambiental. Lodos y Biosólidos. Especificaciones y límites máximos permisibles de contaminantes para su aprovechamiento y disposición final (NOM-004-SEMARNAT-2002)]]></article-title>
<source><![CDATA[Diario Oficial de la Federación]]></source>
<year>2003</year>
<publisher-loc><![CDATA[México, D.F. ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="book">
<collab>Servicio Geológico Mexicano</collab>
<source><![CDATA[Panorama minero del Estado de Guerrero]]></source>
<year>2016</year>
<publisher-loc><![CDATA[México, D.F. ]]></publisher-loc>
<publisher-name><![CDATA[Secretaría de Economía]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Talavera Mendoza]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Yta]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Moreno Tovar]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Dótor Almazán]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Flores Mundo]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Duarte Gutiérrez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mineralogy and geochemistry of sulfide-bearing tailings from silver mines in the Taxco, Mexico area to evaluate their potential environmental impact]]></article-title>
<source><![CDATA[Geofísica Internacional]]></source>
<year>2005</year>
<volume>44</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>49-64</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tchobanoglous]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Burton]]></surname>
<given-names><![CDATA[L. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Stensel]]></surname>
<given-names><![CDATA[H. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Wastewater engineering: Treatment and reuse]]></source>
<year>2003</year>
<publisher-loc><![CDATA[New York, USA ]]></publisher-loc>
<publisher-name><![CDATA[American Water Works Association]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tessier]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Campbell]]></surname>
<given-names><![CDATA[P. G. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Bisson]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sequencial extraction procedure for the speciation of particulate trace metals]]></article-title>
<source><![CDATA[Analytical Chemistry]]></source>
<year>1979</year>
<volume>51</volume>
<page-range>844-51</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="book">
<collab>United States Environmental Protection Agency</collab>
<source><![CDATA[Standard for the use and disposal of sewage sludge]]></source>
<year>1995</year>
<publisher-loc><![CDATA[Washington, D.C. ]]></publisher-loc>
<publisher-name><![CDATA[United States Environmental Protection Agency Publication.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vélez-Pérez]]></surname>
<given-names><![CDATA[L.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramirez-Nava]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Flores]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Talavera-Mendoza]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Escamilla-Alvarado]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Poggi-Varaldo]]></surname>
<given-names><![CDATA[H.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Solorza-Feria]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Díaz]]></surname>
<given-names><![CDATA[J.A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Industrial acid mine drainage and municipal wastewater co-treatment by dual-chamber microbial fuel cells]]></article-title>
<source><![CDATA[International Journal of Hydrogen Energy]]></source>
<year>2020</year>
<volume>45</volume>
<page-range>13757-66</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Woo Reza]]></surname>
</name>
</person-group>
<source><![CDATA[Estudio de viabilidad en la aplicación de lodos activados en suelo para los cultivos de maíz (Zea mays L.) y nopal (Opuntia ficus-indica)]]></source>
<year>2003</year>
<publisher-loc><![CDATA[Marín, Nuevo León, México ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Autónoma de Nuevo León, Facultad de Agronomía]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[L. X.]]></given-names>
</name>
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[J. W. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of dissolved organic matter from sludge and sludge compost and soil copper sorption]]></article-title>
<source><![CDATA[Journal of Environmental Quality]]></source>
<year>2001</year>
<volume>30</volume>
<page-range>878-83</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
