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Electrochemical detection and quantification of Reactive Red 195 dyes on graphene modified glassy carbon electrode.
Journal of Environmental Science and Health, Part C ( IF 1.650 ) Pub Date : 2019-01-12 , DOI: 10.1080/10590501.2019.1555331
M Revathi 1 , B Kavitha 2 , C Vedhi 3 , N Senthil Kumar 1, 4
Affiliation  

Reactive Red 195 was detected from industrial waste samples electrochemically on graphene modified glassy carbon electrode (GCE), using both bare and surface changed GCE at different pH media from 1.0 to 13.0. The optimum pH was determined to be 4.0. RR 195 exhibited good linear responds at pH 4.0 on both electrode surfaces. Other parameters, such as accumulation potential, accumulation time, initial scan potential, pulse height, pulse width, and potential scan increment and scan rate are optimized and calibration plot was also derived on different concentrations of the dye. The stripping voltammetric behavior of dye exhibits very low limit of detection on graphene coated electrode (30 ppb). The adsorption of compound on GCE and graphene coated GCE are confirmed using atomic force microscopy studies.

中文翻译:

石墨烯修饰玻碳电极上活性红195染料的电化学检测和定量。

在石墨烯修饰的玻碳电极(GCE)上,通过在1.0至13.0的不同pH介质下使用裸露和表面变化的GCE,从电化学法从工业废料样品中检测到了反应性红195。确定最佳pH为4.0。RR 195在两个电极表面的pH 4.0下均表现出良好的线性响应。优化了其他参数,例如累积电势,累积时间,初始扫描电势,脉冲高度,脉冲宽度以及电势扫描增量和扫描速率,并且还针对不同浓度的染料得出了校正图。染料的溶出伏安行为在石墨烯涂层电极(30 ppb)上显示出非常低的检测极限。使用原子力显微镜研究证实了化合物在GCE和石墨烯涂层的GCE上的吸附。
更新日期:2019-11-01
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