MWCNT‐modified Electrode for Voltammetric Determination of Allura Red and Brilliant Blue FCF in Isotonic Sport Drinks

Sierra‐Rosales Paulina; Toledo‐Neira Carla; Ortúzar‐Salazar Pía; Squella Juan Arturo

摘要

Abstract > A fast and simple electrochemical sensor is presented for the determination of allura red and brilliant blue in isotonic sport drinks, using a glassy carbon electrode modified with multi‐walled carbon nanotubes. The electrochemical behavior of the colorants was studied by cyclic and differential pulse voltammetry in 0.1?M PBS, pH?7.0. The solution pH, the amount of nanomaterial on the surface of the electrode and the accumulation time of each colorant were optimized. Under the optimal conditions, the sensor exhibited a linear response to allura red and brilliant blue with detection limits of 7?μg?L ?1 and 52?μg?L ?1 , respectively. The sensor was applied to the analysis of commercial isotonic sports drinks that contain individual or mixed colorants, showing good sensitivity and reproducibility. The results were compared with a chromatographic method showing that the levels of colorants are low and did not show a risk for a consumer's health. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> >快速和简单的电化学传感器，用于确定Altura红色和辉煌蓝色在等渗运动饮料，使用多壁碳纳米管改性玻璃碳电极。通过循环和差分脉冲伏安法在0.1μmPBS中进行着色剂的电化学行为，pH？7.0。溶液pH，电极表面上的纳米材料的量和每种着色剂的累积时间进行了优化。在最佳条件下，传感器对阿鲁拉红色和明亮的蓝色表现出线性响应，其中检测限为7ΩΩ·l Δ1和52Ωω1？1 </ sup> ，分别。该传感器应用于含有个体或混合着色剂的商业等渗运动饮料的分析，呈现出良好的敏感性和再现性。将结果与色谱法进行比较，显示着色剂水平低，并且没有显示出消费者健康的风险。 </ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-22546/'>《Electroanalysis》</a> <b style="margin: 0 2px;">|</b><span>2019年第5期</span><b style="margin: 0 2px;">|</b><span>共8页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Sierra‐Rosales Paulina&option=202" target="_blank" rel="nofollow">Sierra‐Rosales Paulina;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Toledo‐Neira Carla&option=202" target="_blank" rel="nofollow">Toledo‐Neira Carla;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ortúzar‐Salazar Pía&option=202" target="_blank" rel="nofollow">Ortúzar‐Salazar Pía;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Squella Juan Arturo&option=202" target="_blank" rel="nofollow">Squella Juan Arturo;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Programa Institucional de Fomento a la InvestigaciónDesarrollo e InnovaciónIgnacio Valdivieso 2409 P.O Box 8940577 San Joaquín Santiago Chile;</p> <p>Departamento de Química de los MaterialesFacultad de Química y BiologíaAv. Bernardo O'Higgins 3363 917002 Estación Central Santiago Chile;</p> <p>Departamento de Química Orgánica y FisicoquímicaFacultad de Ciencias Químicas y Farmacéuticas8380492 Independencia Santiago Chile;</p> <p>Departamento de Química Orgánica y FisicoquímicaFacultad de Ciencias Químicas y Farmacéuticas8380492 Independencia Santiago Chile;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/4817.html" title="电化学、电解、磁化学">电化学、电解、磁化学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=MWCNTs&option=203" rel="nofollow">MWCNTs;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Isotonic sport drinks&option=203" rel="nofollow">Isotonic sport drinks;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Brilliant blue FCF&option=203" rel="nofollow">Brilliant blue FCF;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Allura red AC&option=203" rel="nofollow">Allura red AC;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=modified electrodes&option=203" rel="nofollow">modified electrodes;</a> </p> <div class="translation"> 机译：MWCNT;等渗运动饮料;辉煌的蓝色FCF;血浆红色交流;改性电极; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li 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