<?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>1815-5928</journal-id>
<journal-title><![CDATA[Ingeniería Electrónica, Automática y Comunicaciones]]></journal-title>
<abbrev-journal-title><![CDATA[EAC]]></abbrev-journal-title>
<issn>1815-5928</issn>
<publisher>
<publisher-name><![CDATA[Universidad Tecnológica de La Habana José Antonio Echeverría, Cujae]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59282019000200001</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de respuestas potenciométricas de electrodos de Vidrio/ITO y Vidrio/ITO/PANI-LS en la medición de pH]]></article-title>
<article-title xml:lang="en"><![CDATA[Analysis of the potentiometric responses of Glass/ITO and Glass/ITO/PANI-LS electrodes in pH measurement]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Somoza Chuay]]></surname>
<given-names><![CDATA[José Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pavoni Oliver]]></surname>
<given-names><![CDATA[Sonnia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Eirez Izquierdo]]></surname>
<given-names><![CDATA[José Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bistel Esquivel]]></surname>
<given-names><![CDATA[Roberto Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica de La Habana &#8220;José Antonio Echevarría&#8221;  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>40</volume>
<numero>2</numero>
<fpage>1</fpage>
<lpage>9</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59282019000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59282019000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59282019000200001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Hoy en día numerosas investigaciones están enfocadas a la búsqueda de nuevos materiales sensibles a la presencia de diferentes agentes químicos, para ser empleados en sensores de diversos tipos. La Polianilina (PANI), la Liquinina Sulfonada (LS) y el óxido de indio y estaño (ITO) se han reportado como materiales sensibles al cambio de concentración de varios iones. En este trabajo se presenta el empleo de estos materiales en la construcción de electrodos para la medición de pH. Se desarrollaron dos tipos de electrodos: de Vidrio/ITO y de Vidrio/ITO/PANI-LS. La deposición de las capas de PANI-LS sobre los substratos se realizó utilizando una técnica conocida como Layer by Layer. Los electrodos se caracterizaron experimentalmente mediante la técnica conocida como potenciometría. Se diseñó un sistema de medición potenciométrico basado en las técnicas de la instrumentación virtual. Los resultados experimentales mostraron que tanto los electrodos de Vidrio/ITO como los de Vidrio/ITO/PANI-LS presentaron respuestas potenciométricas que pueden clasificarse como cercanas a la nernstiana en un rango de medición de pH de 3 a 11 unidades. En este intervalo se evidenció una relación lineal entre la tensión de la celda de medición y el pH medido, con coeficientes de regresión lineal y correlación superiores a 0,9.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Nowadays numerous investigations are focused on the search of new materials for the manufacture of sensors of diverse types. These materials change their properties in the presence of different chemical agents. Polyaniline (PANI) and ITO can be used as sensitive materials to detect concentrations of various ions. In this work, glass/ITO/PANI-LS and glass/ ITO working electrodes were constructed for the measurement of pH with dimensions of 2.5 cm x 1.5 cm and 2.5 cm x 2.5 cm. The deposition of the PANI-LS layers was performed using the Layer-by-Layer technique. A potentiometric measurement system for pH measurement was designed, based on the use of Virtual Instrumentation techniques. The results showed that the glass/ ITO/ PANI-LS and glass/ ITO electrodes had potentiometric responses close to nernstian in a pH measurement range of 3 to 11 units. In this measurement range there was a linear relationship between the difference in voltage and pH, which is evidenced with coefficients of linear regression and correlation higher than 0.9. The results obtained experimentally are similar to those reported in the literature with other materials.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Vidrio]]></kwd>
<kwd lng="es"><![CDATA[ITO]]></kwd>
<kwd lng="es"><![CDATA[PANI]]></kwd>
<kwd lng="es"><![CDATA[LS]]></kwd>
<kwd lng="es"><![CDATA[electrodos]]></kwd>
<kwd lng="es"><![CDATA[medición de pH]]></kwd>
<kwd lng="en"><![CDATA[Glass]]></kwd>
<kwd lng="en"><![CDATA[ITO]]></kwd>
<kwd lng="en"><![CDATA[PANI]]></kwd>
<kwd lng="en"><![CDATA[LS]]></kwd>
<kwd lng="en"><![CDATA[electrodes]]></kwd>
<kwd lng="en"><![CDATA[pH measurement]]></kwd>
</kwd-group>
</article-meta>
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