Khalifa Ziad, Hassan Khalid, Abo Oura Mohamed Fathi, Hathoot Abla, Azzem Magdi Abdel
Chemical Engineering Department, Faculty of Engineering, The British University in Egypt, El Sherouk City 11837 Egypt.
Chemistry Research Laboratory, Physics and Mathematics Engineering Department, Faculty of Electronic Engineering, El-Menoufia University, Menof 23952 Egypt.
ACS Omega. 2020 Jul 22;5(30):18950-18957. doi: 10.1021/acsomega.0c02228. eCollection 2020 Aug 4.
An advanced electroanalytical technique for the simultaneous assessment of environmental contaminant dihydroxybenzene isomers, catechol (CC), hydroquinone (HQ), and resorcinol (RC), has been investigated using palladium nanoparticles (PdNPs) incorporated onto a poly(1,5-diaminonaphthalene) (DAN) matrix over a glassy carbon electrode (GCE). Concurrently, these types of phenols can be assessed by the PdDAN/GCE modified electrode employing square wave voltammetry and cyclic voltammetry (CV) techniques under optimal conditions. This modified electrode has demonstrated linear responses for CC, HQ, and RC from 50.0 to 1000.0 mM; concomitantly, low detection limits of 0.22, 0.22, and 0.47 nM and low quantification limits of 0.740, 0.758, and 1.590 nM, have been, respectively, shown. Successfully, the simultaneous assessment of the three isomers in river stream water, tap water, and underground water has been implemented via the modified electrode under investigation. In comparison to reported studies, the PdDAN catalytic electrode has shown an effective sensitivity, leverage reproducibility, long-term stability, and excellent anti-interference capability for the determination of dihydroxybenzene isomers.
一种用于同时评估环境污染物二羟基苯异构体（邻苯二酚（CC）、对苯二酚（HQ）和间苯二酚（RC））的先进电分析技术，已通过将钯纳米颗粒（PdNPs）掺入聚（1,5 - 二氨基萘）（DAN）基质并覆盖在玻碳电极（GCE）上进行了研究。同时，在最佳条件下，这些类型的酚类物质可以通过采用方波伏安法和循环伏安法（CV）技术的PdDAN/GCE修饰电极进行评估。该修饰电极对CC、HQ和RC在50.0至1000.0 mM范围内表现出线性响应；同时，分别显示出0.22、0.22和0.47 nM的低检测限以及0.740、0.758和1.590 nM的低定量限。通过所研究的修饰电极成功实现了对河水、自来水和地下水中三种异构体的同时评估。与已报道的研究相比，PdDAN催化电极在测定二羟基苯异构体方面表现出有效的灵敏度、良好的重现性、长期稳定性和出色的抗干扰能力。
