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首页> 外文期刊>Electroanalysis >Electroanalytical Behavior of Gallic and Ellagic Acid Using Graphene Modified Screen-Printed Electrodes. Method for the Determination of Total Low Oxidation Potential Phenolic Compounds Content in Cork Boiling Waters
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Electroanalytical Behavior of Gallic and Ellagic Acid Using Graphene Modified Screen-Printed Electrodes. Method for the Determination of Total Low Oxidation Potential Phenolic Compounds Content in Cork Boiling Waters

机译:石墨烯修饰的丝网印刷电极对没食子酸和鞣花酸的电分析行为。测定软木沸水中总低氧化性酚类化合物含量的方法

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摘要

New electroanalytical methods have been proposed for the estimation of the total content of phenolic compounds of low oxidation potential in cork boiling water, expressed as gallic acid equivalent/g dry cork, by using screen-printed electrode modified with graphene. The results obtained have been compared with spectrophotometric method (Folin-Ciocalteau) and a good correlation has been found between them. The detection limits obtained by Winefordner-Long and Clayton methods were 0.04 and 0.06 ppm for ellagic acid (EA), and 0.05 and 0.09 ppm for gallic acid (GA), respectively. The sensitivity, simplicity, selectivity, fast and low cost of the developed methodologies is also demonstrated.
机译:通过使用石墨烯修饰的丝网印刷电极,已提出了新的电分析方法来估算软木塞沸水中低氧化电位的酚类化合物的总含量,以没食酸当量/克干软木塞表示。将所得结果与分光光度法(Folin-Ciocalteau)进行了比较,并且发现它们之间具有良好的相关性。通过Winefordner-Long和Clayton方法获得的检出限分别为鞣花酸(EA)为0.04和0.06 ppm,没食子酸(GA)为0.05和0.09 ppm。还展示了所开发方法的灵敏度,简单性,选择性,快速和低成本。

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