Revathi M, Kavitha B, Vedhi C, Senthil Kumar N
a Research and Development Centre , Bharathiar University , Coimbatore , Tamil Nadu , India.
b Sri Ranganathar Institute of Engineering and Technology , Coimbatore , India.
J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2019;37(1):42-54. doi: 10.1080/10590501.2019.1555331. Epub 2019 Jan 12.
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.
在石墨烯修饰玻碳电极（GCE）上，利用裸电极和表面改性的GCE，在pH值为1.0至13.0的不同介质中，通过电化学方法检测工业废水样品中的活性红195。确定最佳pH值为4.0。RR 195在pH 4.0时在两个电极表面均表现出良好的线性响应。对其他参数，如富集电位、富集时间、初始扫描电位、脉冲高度、脉冲宽度、电位扫描增量和扫描速率进行了优化，并绘制了不同浓度染料的校准曲线。染料的溶出伏安行为在石墨烯涂层电极上显示出极低的检测限（30 ppb）。利用原子力显微镜研究证实了化合物在GCE和石墨烯涂层GCE上的吸附。
