<?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>0121-4004</journal-id>
<journal-title><![CDATA[Vitae]]></journal-title>
<abbrev-journal-title><![CDATA[Vitae]]></abbrev-journal-title>
<issn>0121-4004</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Química Farmacéutica, Universidad de Antioquia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-40042021000200007</article-id>
<article-id pub-id-type="doi">10.17533/udea.vitae.v28n2a346228</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Voltammetric Determination of Ascorbic Acid in Pharmaceutical Formulations Using Modified Iodine-Coated Platinum Electrode]]></article-title>
<article-title xml:lang="es"><![CDATA[Determinación voltamétrica del ácido ascórbico en formulaciones farmacéuticas utilizando un electrodo de platino modificado recubierto de yodo]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Amayreh]]></surname>
<given-names><![CDATA[Mohammad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[Wafa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[Mohammed Khair]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Al-Balqa Applied University Faculty of Science Department of Chemistry]]></institution>
<addr-line><![CDATA[Al-Salt ]]></addr-line>
<country>Jordan</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Philadelphia University Faculty of Pharmacy ]]></institution>
<addr-line><![CDATA[Amman ]]></addr-line>
<country>Jordan</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of Jordan Department of Chemistry ]]></institution>
<addr-line><![CDATA[Amman ]]></addr-line>
<country>Jordan</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>28</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-40042021000200007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-40042021000200007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-40042021000200007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background:  Despite the high reactivity of the platinum electrode, the iodine-coated platinum electrode shows obvious inertness toward adsorption and surface processes. For that, iodine-coated platinum electrodes accommodate themselves to interesting voltammetric applications.  Objectives:  This study reports using the modified iodine-coated polycrystalline platinum electrode as a voltammetric sensor for ascorbic acid determination in pharmaceutical formulations.  Methods:  The developed voltammetric method based on recording cyclic voltammograms of ascorbic acid at iodine-coated electrode The optimized experimental parameters for the determination of ascorbic acid were using 0.1 M KCl as a supporting electrolyte with a scan rate of 50mV/s.  Results:  The anodic peak related to ascorbic acid oxidation was centered at nearly 0.28V. An excellent and extended linear dependence of the oxidative peak current on the concentration of ascorbic acid was observed in the range 2.84x10-3 - 5.68 mM. The limit of detection (LOD) and limit of quantitation (LOQ) were 1.0 µM and 3.01 µM, respectively, attesting to the method&#8217;s sensitivity. The investigation for the effect of potential interference from multivitamin tablet ingredients (vitamins B1, B6, B12, folic acid, citric acid, sucrose, glucose, and zinc) indicated specific selectivity toward ascorbic acid and the absence of any electrochemical response toward these components. Recovery results in the range 98.93±2.78 - 99.98±5.20 for spiked standard ascorbic acid in pharmaceutical formulations further confirmed the potential applicability of the developed method for the determination of ascorbic acid in real samples.  Conclusions:  The developed method was successfully applied to the analysis of ascorbic acid (vitamin C), and the obtained results were in good agreement with the labeled values; besides, the statistical tests indicated no significant difference at p=0.05 with a 95% confidence level.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes:  A pesar de su alta reactividad, el electrodo de platino recubierto de yodo muestra una inercia evidente hacia la adsorción y los procesos superficiales. Por ello, los electrodos de platino recubiertos de yodo se adaptan a interesantes aplicaciones voltamétricas.  Objetivos:  Este estudio informa sobre el uso del electrodo de platino policristalino recubierto de yodo modificado como sensor voltamétrico para la determinación del ácido ascórbico en formulaciones farmacéuticas.  Métodos:  El método voltamétrico desarrollado se basa en el registro de voltamperogramas cíclicos del ácido ascórbico en el electrodo recubierto de yodo Los parámetros experimentales optimizados para la determinación del ácido ascórbico fueron utilizando KCl 0,1 M como electrolito de soporte con una velocidad de barrido de 50mV/s.  Resultados:  El pico anódico relacionado con la oxidación del ácido ascórbico se centró en casi 0,28V. Se observó una excelente y extendida dependencia lineal de la corriente del pico oxidativo con respecto a la concentración de ácido ascórbico en el rango 2,84x10-3 - 5,68 mM. El límite de detección (LOD) y el límite de cuantificación (LOQ) fueron 1,0 µM y 3,01 µM, respectivamente, lo que demuestra la sensibilidad del método. La investigación del efecto de la interferencia potencial de los ingredientes de las tabletas multivitamínicas (vitaminas B1, B6, B12, ácido fólico, ácido cítrico, sacarosa, glucosa y zinc) indicó una selectividad específica hacia el ácido ascórbico y la ausencia de cualquier respuesta electroquímica hacia estos componentes. Los resultados de recuperación en el rango de 98,93±2,78 - 99,98±5,20 para el ácido ascórbico estándar adicionado en formulaciones farmacéuticas confirmaron además la potencial aplicabilidad del método desarrollado para la determinación del ácido ascórbico en muestras reales.  Conclusiones:  El método desarrollado se aplicó con éxito al análisis de ácido ascórbico (vitamina C), y los resultados obtenidos coincidieron con los valores etiquetados; además, las pruebas estadísticas no indicaron diferencias significativas a p=0,05 con un nivel de confianza del 95%.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[ascorbic acid analysis]]></kwd>
<kwd lng="en"><![CDATA[pharmaceutical formulation]]></kwd>
<kwd lng="en"><![CDATA[voltammetric analysis]]></kwd>
<kwd lng="en"><![CDATA[iodine-coated platinum electrode]]></kwd>
<kwd lng="en"><![CDATA[modified platinum electrode]]></kwd>
<kwd lng="es"><![CDATA[análisis de ácido ascórbico]]></kwd>
<kwd lng="es"><![CDATA[formulación farmacéutica]]></kwd>
<kwd lng="es"><![CDATA[análisis voltamétrico]]></kwd>
<kwd lng="es"><![CDATA[electrodo de platino recubierto de yodo]]></kwd>
<kwd lng="es"><![CDATA[electrodo de platino modificado]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pisoschi]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Danet]]></surname>
<given-names><![CDATA[AF]]></given-names>
</name>
<name>
<surname><![CDATA[Kalinowski]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ascorbic acid determination in commercial fruit juice samples by cyclic voltammetry]]></article-title>
<source><![CDATA[J Autom Methods Manag Chem.]]></source>
<year>2008</year>
<volume>2008</volume>
<page-range>1-8</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chambial]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Dwivedi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Shukla]]></surname>
<given-names><![CDATA[KK]]></given-names>
</name>
<name>
<surname><![CDATA[John]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Vitamin C in disease prevention and cure: An Overview]]></article-title>
<source><![CDATA[Indian Journal of Clinical Biochemistry]]></source>
<year>2013</year>
<volume>28</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>314-28</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Perry]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Page]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Manthey]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Zavitz]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Scurvy: Dietary Discretion in a developed country. Clinical Practice and Cases in Emergency Medicine]]></source>
<year>2018</year>
<volume>2</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>147-50</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Naidu]]></surname>
<given-names><![CDATA[KA.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Vitamin C in human health and disease is still a mystery? An overview]]></article-title>
<source><![CDATA[Nutrition Journal.]]></source>
<year>2003</year>
<volume>2</volume>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Luo]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of trace vitamin C by ion-pair HPLC with UV detection in calcium gluconate and vitamin C compound oral solution]]></article-title>
<source><![CDATA[Journal of Chromatographic Science]]></source>
<year>2012</year>
<volume>50</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>102-7</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gazdik Z]]></surname>
<given-names><![CDATA[Zitka O]]></given-names>
</name>
<name>
<surname><![CDATA[Petrlova J]]></surname>
<given-names><![CDATA[Adam V]]></given-names>
</name>
<name>
<surname><![CDATA[Zehnalek J]]></surname>
<given-names><![CDATA[Horna A]]></given-names>
</name>
<name>
<surname><![CDATA[Reznicek V]]></surname>
<given-names><![CDATA[Beklova M]]></given-names>
</name>
<name>
<surname><![CDATA[Kizek]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of vitamin C (Ascorbic Acid) using high performance liquid chromatography coupled with electrochemical detection]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2008</year>
<volume>8</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>7097-112</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shrestha]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Shrestha]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Bhattarai]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of ascorbic acid in different citrus fruits of Kathmandu Valley]]></article-title>
<source><![CDATA[Journal of medical and Biological Science Research]]></source>
<year>2016</year>
<volume>2</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>9-14</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Anal]]></surname>
<given-names><![CDATA[PD]]></given-names>
</name>
<name>
<surname><![CDATA[Shuchi]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[UV spectroscopic method for determination of vitamin C(ascorbic acid) content in different fruits in south Gujarat Region]]></article-title>
<source><![CDATA[International Journal of Environmental Sciences &amp; Natural Resources]]></source>
<year>2019</year>
<volume>21</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>41-4</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mirsad]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Amra]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spectrophotometric determination of L-ascorbic Acid in pharmaceutical based on its oxidation by potassium peroxymonosulfate and hydrogen Peroxide]]></article-title>
<source><![CDATA[Croatica Chemica Acta]]></source>
<year>2015</year>
<volume>88</volume>
<page-range>73-9</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zanini]]></surname>
<given-names><![CDATA[DJ]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[MH]]></given-names>
</name>
<name>
<surname><![CDATA[Aguiar-Oliveira]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Mazalli]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
<name>
<surname><![CDATA[Kamimura]]></surname>
<given-names><![CDATA[ES]]></given-names>
</name>
<name>
<surname><![CDATA[Maldonado]]></surname>
<given-names><![CDATA[RR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spectrophotometric analysis of vitamin C in different matrices utilizing potassium permanganate]]></article-title>
<source><![CDATA[European International Journal of Science and Technology]]></source>
<year>2018</year>
<volume>7</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>70-84</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arya]]></surname>
<given-names><![CDATA[SP]]></given-names>
</name>
<name>
<surname><![CDATA[Mahajan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Jain]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Photometric methods for the determination of vitamin C]]></article-title>
<source><![CDATA[Analytical Sciences]]></source>
<year>1998</year>
<volume>14</volume>
<page-range>889-95</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lau]]></surname>
<given-names><![CDATA[O-W]]></given-names>
</name>
<name>
<surname><![CDATA[Luk]]></surname>
<given-names><![CDATA[S-F]]></given-names>
</name>
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[K-S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of ascorbic acid in pharmaceuticals using direct ultraviolet spectrophotometry]]></article-title>
<source><![CDATA[Analyst]]></source>
<year>1987</year>
<volume>112</volume>
<page-range>1023-5</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dilgin]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Nisli]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fluorimetric determination of ascorbic acid in vitamin C tablets using methylene blue]]></article-title>
<source><![CDATA[Chem. Pharm. Bull.]]></source>
<year>2015</year>
<volume>53</volume>
<page-range>1251-4</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ensafi]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Rezaei]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Flow injection analysis determination of ascorbic acid with spectrofluorimetric detection]]></article-title>
<source><![CDATA[Analytical Letters]]></source>
<year>1998</year>
<volume>31</volume>
<page-range>333-42</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gazdik]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Zitka]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Petrlova]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Adam]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Zehnalek]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Horna]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Reznicek]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Beklova]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kizek]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of vitamin C(ascorbic acid) using high performance liquid chromatography coupled with electrochemical detection]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2008</year>
<volume>8</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>7097-112</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Clucu]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chemically modified electrodes in biosensing]]></article-title>
<source><![CDATA[J Biosens Bioelectron]]></source>
<year>2014</year>
<volume>5</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[March]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Nguyen]]></surname>
<given-names><![CDATA[TD]]></given-names>
</name>
<name>
<surname><![CDATA[Piro]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modified electrodes used for electrochemical detection of metal ions in environmental analysis]]></article-title>
<source><![CDATA[Biosensor]]></source>
<year>2015</year>
<volume>5</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>241-75</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cox]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Kulesza]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Oxidation and determination of nitrite at modified electrodes]]></article-title>
<source><![CDATA[Journal of Electroanalytical Chemistry and Interfacialelectrochemistry]]></source>
<year>1984</year>
<volume>175</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>105-18</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Felter]]></surname>
<given-names><![CDATA[TE]]></given-names>
</name>
<name>
<surname><![CDATA[Hubbard]]></surname>
<given-names><![CDATA[AT]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[L.E.E.D. and electrochemistry of iodine on Pt (100) and Pt (111) single-crystal surfaces]]></article-title>
<source><![CDATA[J. Electroanal. Chem.]]></source>
<year>1979</year>
<volume>100</volume>
<page-range>473-91</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shu]]></surname>
<given-names><![CDATA[ZX]]></given-names>
</name>
<name>
<surname><![CDATA[Bruckenstein]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Iodine Adsorption Studies at Platinum]]></article-title>
<source><![CDATA[J. Electroanal. Chem.]]></source>
<year>1991</year>
<volume>317</volume>
<page-range>263-77</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mebrahtu]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Bravo]]></surname>
<given-names><![CDATA[BG]]></given-names>
</name>
<name>
<surname><![CDATA[Soriaga]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hydrogenative/cathodic stripping of iodine chemisorbed on smooth polycrystalline platinum electrode]]></article-title>
<source><![CDATA[J. Electroanal. Chem.]]></source>
<year>1987</year>
<volume>219</volume>
<page-range>327-33</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thomas]]></surname>
<given-names><![CDATA[AE]]></given-names>
</name>
<name>
<surname><![CDATA[Wieckowski]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Surface diffusion limited desorption of iodine on a platinum electrode?]]></article-title>
<source><![CDATA[Journal of Electroanalytical Chemistry]]></source>
<year>1995</year>
<volume>399</volume>
<page-range>207-12</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Podlovchenko]]></surname>
<given-names><![CDATA[BI]]></given-names>
</name>
<name>
<surname><![CDATA[Kolyadko]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Adsorption of carbon monoxide on platinized platinum electrode with preadsorbed iodine and iodide Anions]]></article-title>
<source><![CDATA[Russian Journal of Electrochemistry]]></source>
<year>2003</year>
<volume>39</volume>
<page-range>823-7</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of silver (I) by cyclic voltammetry at iodine-coated electrodes]]></article-title>
<source><![CDATA[Analyst]]></source>
<year>1994</year>
<volume>119</volume>
<page-range>1975-8</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lane]]></surname>
<given-names><![CDATA[RF]]></given-names>
</name>
<name>
<surname><![CDATA[Hubbard]]></surname>
<given-names><![CDATA[AT]]></given-names>
</name>
<name>
<surname><![CDATA[Fukunaga]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Blanchard]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Brain catecholamines: detection in vivo by means of differential pulse voltammetry at surface-modified platinum electrodes]]></article-title>
<source><![CDATA[Brain Research]]></source>
<year>1976</year>
<volume>114</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>346-52</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Jarar]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Arar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Atmospheric SO2 determination by voltammetric analysis at an iodine-coated platinum electrode]]></article-title>
<source><![CDATA[Electroanalysis]]></source>
<year>1999</year>
<volume>11</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>637-40</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mk]]></surname>
<given-names><![CDATA[Hourani]]></given-names>
</name>
<name>
<surname><![CDATA[Hijaz]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Voltammetric Analysis of Hydroquinone and Catechol at Iodine-Coated Polycrystalline Platinum Electrode]]></article-title>
<source><![CDATA[Journal of Natural and engineering Science]]></source>
<year>2014</year>
<volume>8</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>25-9</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amayreh]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of iron in dietary supplements by voltammetric analysis at an iodine-coated polycrystalline platinum electrode]]></article-title>
<source><![CDATA[Int.J. Electrochem. Sci.]]></source>
<year>2018</year>
<volume>13</volume>
<page-range>975-83</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amayreh]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Hournai]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Direct determination of hemoglobin in blood using iodine-coated platinum polycrystalline electrode]]></article-title>
<source><![CDATA[Analytical and Bioanalytical Chemistry Research]]></source>
<year>2019</year>
<volume>6</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>59-68</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hournai]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
<name>
<surname><![CDATA[Amayreh]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A Voltammetric sensor based on iodine-coated platinum electrode for determination of iron in blood serum]]></article-title>
<source><![CDATA[Anal.Bioanal.Electrochem.]]></source>
<year>2018</year>
<volume>10</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1620-8</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amayreh]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of Iron in Spinach Using Sweep Voltammetry at Iodine-Coated Platinum rotating Disk Electrode]]></article-title>
<source><![CDATA[Journal of AOAC International]]></source>
<year>2019</year>
<volume>102</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>666-8</page-range></nlm-citation>
</ref>
<ref id="B32">
<label>32</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amayreh]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Hourani]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anodic Stripping Voltammetric Determination of Copper in Multivitamin-Mineral Formulations using Iodine-Coated Platinum Electrode]]></article-title>
<source><![CDATA[Methods Objects Chem. Anal.]]></source>
<year>2021</year>
<volume>16</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>48-56</page-range></nlm-citation>
</ref>
<ref id="B33">
<label>33</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[JN]]></given-names>
</name>
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<source><![CDATA[Statistics and Chemometrics for Analytical Chemistry]]></source>
<year>2010</year>
<edition>6</edition>
<page-range>43-5</page-range><publisher-loc><![CDATA[England ]]></publisher-loc>
<publisher-name><![CDATA[Pearson]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B34">
<label>34</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bitew]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Amare]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrochemical determination of ascorbic acid in pharmaceutical tablets using carbon paste electrode]]></article-title>
<source><![CDATA[Organic &amp; Medicinal Chemistry International Journal]]></source>
<year>2019</year>
<volume>8</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1-9</page-range></nlm-citation>
</ref>
<ref id="B35">
<label>35</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lourenção]]></surname>
<given-names><![CDATA[BC]]></given-names>
</name>
<name>
<surname><![CDATA[Medeiros]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[Rocha-Filho]]></surname>
<given-names><![CDATA[RC]]></given-names>
</name>
<name>
<surname><![CDATA[Fatibello-Filho]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Simultaneous differential pulse voltammetric determination of ascorbic acid and caffeine in pharmaceutical formulations using a boron-doped diamond electrode]]></article-title>
<source><![CDATA[Electroanalysis]]></source>
<year>2010</year>
<volume>22</volume>
<numero>15</numero>
<issue>15</issue>
<page-range>1717-23</page-range></nlm-citation>
</ref>
<ref id="B36">
<label>36</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vedenyapina]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
<name>
<surname><![CDATA[Kazakova]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
<name>
<surname><![CDATA[Skundin]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Voltammetric determination of ascorbic acid in pharmaceutical formulation on a boron doped diamond electrode]]></article-title>
<source><![CDATA[Russ. J. Phys. Chem.]]></source>
<year>2019</year>
<volume>93</volume>
<page-range>1178-81</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
