Poly (glycine) modified carbon paste electrode for simultaneous determination of catechol and hydroquinone: A voltammetric study

IF 4.1 3区化学 Q1 CHEMISTRY, ANALYTICAL Journal of Electroanalytical Chemistry Pub Date : 2018-08-15 DOI:10.1016/j.jelechem.2018.07.021

K.V. Harisha , B.E. Kumara Swamy , Eno E. Ebenso

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引用次数: 54

Abstract

The poly (glycine) modified carbon paste electrode (MCPE) was fabricated for the determination of catechol and hydroquinone by cyclic voltammetric and differential pulse voltammetric techniques. The poly (glycine) MCPE exhibits high sensitivity and selectivity in the determination of catechol and hydroquinone in a binary mixture. The effect of scan rate was examined and it was found to be adsorption-controlled. The effect of concentration was studied in the range of 20-180 μM. The limit of detection (3S/M) and limit of quantification (10S/M) for CC were found to be 0.16 μM and 0.55 μM, respectively and for HQ the values were 0.20 μM and 0.66 μM, respectively. In order to show the selectivity of the electrode interference study was performed by varying the concentration of one analyte while keeping another analyte constant. Overall, a simple experimental procedure for fabricating the poly (glycine) MCPE was proposed with the merits of sensitivity, selectivity, reproducibility, and anti-fouling property towards the electroactive species and also in biological matrices.

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聚甘氨酸修饰碳糊电极同时测定儿茶酚和对苯二酚的伏安法研究

制备了聚甘氨酸修饰碳糊电极(MCPE)，用循环伏安法和差分脉冲伏安法测定儿茶酚和对苯二酚。聚甘氨酸MCPE对二元混合物中儿茶酚和对苯二酚的测定具有较高的灵敏度和选择性。考察了扫描速率的影响，发现扫描速率受吸附控制。研究了浓度在20 ~ 180 μM范围内的影响。CC的检测限(3S/M)和定量限(10S/M)分别为0.16 μM和0.55 μM, HQ的检测限和定量限分别为0.20 μM和0.66 μM。为了显示电极干扰的选择性，研究通过改变一种分析物的浓度而保持另一种分析物不变来进行。总之，本文提出了一种简单的制备聚甘氨酸MCPE的实验方法，该方法对电活性物质和生物基质具有灵敏度、选择性、可重复性和抗污染性。

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IF 0.9 4区心理学Psychotherapie Psychosomatik Medizinische PsychologiePub Date : 2012-11-01 DOI: 10.1055/s-0032-1314869

Kathrin Pietsch, Anne Hoyler, Barbara Frühe, Joachim Kruse, Gerd Schulte-Körne, Antje-Kathrin Allgaier

来源期刊

Journal of Electroanalytical Chemistry 化学-电化学

CiteScore

7.80

自引率

6.70%

发文量

912

审稿时长

2.4 months

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.