<?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>2224-5421</journal-id>
<journal-title><![CDATA[Revista Cubana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cub Quim]]></abbrev-journal-title>
<issn>2224-5421</issn>
<publisher>
<publisher-name><![CDATA[Ediciones UO, Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-54212020000200287</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Study of the potential sweeps in the manual staircase voltammetry]]></article-title>
<article-title xml:lang="es"><![CDATA[Estudio de los barridos de potencial en la voltamperometría manual de barrido en escalera]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vilasó-Cadre]]></surname>
<given-names><![CDATA[Javier Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arada-Pérez]]></surname>
<given-names><![CDATA[María de los Ángeles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arce-Castro]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baeza-Reyes]]></surname>
<given-names><![CDATA[Dr.C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Institute of Metallurgy ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Oriente Faculty of Natural and Exact Sciences ]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Faculty of Chemistry ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>287</fpage>
<lpage>298</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-54212020000200287&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-54212020000200287&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-54212020000200287&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Voltammetry can be developed using manual potentiostats. This study focuses on the potential sweeps and its influence on the voltammograms in the manual staircase voltammetry. Oxidations of potassium ferrocyanide, potassium iodide, ascorbic acid and succinic acid were used for the study. Five voltammograms were generated for each analyte. A mathematical approximation of the scans to a linear sweep was used for the quantitative description. The scan rate was the slope of the linear regression. The sweeps were compared to evaluate their repeatability. The influence of the repeatability of the sweeps was checked comparing the limiting currents of the voltammograms for each analyte. The results showed that the manual staircase potential sweeps are generated at random, with a high tendency to be non-repeatable. The scan rates were in correspondence with the common values reported. Although not repeatable manual voltage scans were used, the voltammograms did not show statistical differences.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Es posible desarrollar el método voltamperométrico utilizando potenciostatos manuales. Este estudio se centra en los barridos de potenciales manuales de escalera y su influencia en los voltamperogramas. Las oxidaciones de ferrocianuro de potasio, yoduro de potasio, ácido ascórbico y ácido succínico se utilizaron para el estudio. Se generaron cinco voltamogramas para cada analito y se utilizó una aproximación matemática a un barrido lineal, para la descripción cuantitativa. La velocidad de barrido se calculó como la pendiente de la regresión. Los barridos se compararon para evaluar su repetibilidad. Se comprobó la influencia de la repetibilidad de los barridos comparando las corrientes limitantes de los voltamogramas. Los resultados mostraron que los barridos de escalera se generan al azar, con tendencia a no repetirse. Las velocidades de barrido estuvieron en correspondencia con los valores reportados. A pesar de la baja repetibilidad de los barridos, los voltamperogramas no mostraron diferencias estadísticamente significativas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[manual staircase voltammetry]]></kwd>
<kwd lng="en"><![CDATA[potential sweep]]></kwd>
<kwd lng="en"><![CDATA[voltammograms repeatability]]></kwd>
<kwd lng="es"><![CDATA[voltamperometría manual de barrido en escalera]]></kwd>
<kwd lng="es"><![CDATA[barrido de potencial]]></kwd>
<kwd lng="es"><![CDATA[repetibilidad de los voltamperogramas]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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