<?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>2007-2422</journal-id>
<journal-title><![CDATA[Tecnología y ciencias del agua]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnol. cienc. agua]]></abbrev-journal-title>
<issn>2007-2422</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano de Tecnología del Agua, Coordinación de Comunicación, Participación e Información]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-24222016000600139</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización fisicoquímica del agua residual urbano-industrial y su importancia en la agricultura]]></article-title>
<article-title xml:lang="en"><![CDATA[Physico-Chemical Characterization of Urban and Industrial Wastewater and its Importance in Agriculture]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-García]]></surname>
<given-names><![CDATA[Alma Delia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega-Escobar]]></surname>
<given-names><![CDATA[Héctor Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Ayala]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Bernal]]></surname>
<given-names><![CDATA[Edgar Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Can-Chulim]]></surname>
<given-names><![CDATA[Álvaro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Meléndez]]></surname>
<given-names><![CDATA[Domingo José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-Alvarado]]></surname>
<given-names><![CDATA[Rigoberto Eustacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados Postgrado de Hidrociencias Campus Montecillos]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad del Mar Campus Puerto Escondido ]]></institution>
<addr-line><![CDATA[Juquila Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Nayarit  ]]></institution>
<addr-line><![CDATA[Xalisco Nayarit]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Querétaro  ]]></institution>
<addr-line><![CDATA[Querétaro Querétaro]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Agronomía ]]></institution>
<addr-line><![CDATA[Gral. Escobedo Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>6</numero>
<fpage>139</fpage>
<lpage>157</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-24222016000600139&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-24222016000600139&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-24222016000600139&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El agua residual urbano-industrial que se genera en el Valle de México se utiliza para el riego de diferentes cultivos en el Valle del Mezquital. El volumen aproximado de esta agua es de 56.60 m3/s. Se colectaron 102 muestras de agua en la primavera de 2013 a lo largo del sistema hidrográfico Gran Canal Oriente D.F-Zumpango-Ixmiquilpan-Alfajayucan-Zimapán. Los métodos analíticos que se utilizaron para determinar la composición iónica de las muestras de agua fueron los que están descritos en APHA (1995). El objetivo de esta investigación es la caracterización fisicoquímica de esta agua, para evaluar las relaciones funcionales PSI-RASor RASaj , y RAScorr . El coeficiente de mg = a&#402;(CE) fue de a = 0.6989, este valor corresponde al tipo de agua de composición SO4-Cl-HCO3. El régimen fisicoquímico de ácido-alcalinidad fue de pH = 6.95-7.70-8.36. El contenido de NaHCO3 es de 0.23-4.66-11.09 mmolc l-1. El contenido de NaCl fue de 0.62-4.84-9.35 mmolc l-1. El coeficiente de la relación funcional I = a&#402;(CE) fue de a = 0.0116. Los valores de RASor son 1.24-12.91, RAScorr 1.30-15.57 y RASaj 1.70-26.20. Para el cálculo de la relación funcional PSI-RAS se utilizaron las reacciones químicas de equilibrio estequiométricas y heterogéneas; en estas reacciones se contempla la conservación de carga. Los valores de PSI en el campo coordenado PSI-RAS son RASor = 17.90, RAScorr = 20.83, RASaj = 30.69. En el manejo de la calidad del agua residual se debe determinar el RASaj para predecir el PSI que se encontrará en los espesores superficiales de los suelos, que es la zona de germinación y desarrollo de las plántulas de los diferentes cultivos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The urban and industrial wastewater produced in the Valley of México is used for the irrigation of different crops in the Mezquital Valley. The approximate volume of this water is 56.60 m3/s. In the Spring of 2013, 102 water samples were collected along the Hydrographic system known as Gran canal oriente D.F-Zumpango-Ixmiquilpan-Alfajayucan-Zimapán. The analytic methods that were used to determine the ionic composition of the water samples were those that are described in APHA (1995). The aim of this investigation is the physical and chemical characterization of this water, in order to evaluate the functional relations ESP-SARor , SARadj , and SARcorr . The coefficient of mg = af(EC) was of a = 0.6989, which corresponds to type of water with a composition of SO4-Cl-HCO3. The physical and chemical regime of acid-alkalinity was of pH = 6.95-7.70-8.36. The NaHCO3 content is 0.23-4.66-11.09 mmolc L-1. NaCl content was 0.62-4.84-9.35 mmolc l-1. The coefficient of the functional relation I = af(EC) was of a = 0.0116. The values for SARor are 1.24-12.91, SARcorr 1.30-15.57 and SARadj 1.70-26.20. To calculate the ESP-SAR functional relation, the stoichiometric and heterogenous balance chemical reactions were used; these reactions show that the charges are maintained. The ESP values in the coordinated field ESP-RAS are SARor = 17.90, SARcorr = 20.83, SARadj = 30.69. In the management of the quality of wastewater, SAR must be determined in order to predict which ESP will be found in the surface layers of the soil, which is the area of germination and growth of the seedling emergence of different crops.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[RAS]]></kwd>
<kwd lng="es"><![CDATA[PSI]]></kwd>
<kwd lng="es"><![CDATA[calidad del agua]]></kwd>
<kwd lng="es"><![CDATA[agricultura]]></kwd>
<kwd lng="es"><![CDATA[CSR]]></kwd>
<kwd lng="en"><![CDATA[SAR]]></kwd>
<kwd lng="en"><![CDATA[ESP]]></kwd>
<kwd lng="en"><![CDATA[Water quality]]></kwd>
<kwd lng="en"><![CDATA[agriculture]]></kwd>
<kwd lng="en"><![CDATA[RSC]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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