Analytical application of the poly(1H-1,2,4-triazole-3-thiol) modified gold electrode for high-sensitive voltammetric determination of catechol in tap and lake water samples


Tabanlıgil Calam T.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, vol.99, no.13, pp.1298-1312, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 99 Issue: 13
  • Publication Date: 2019
  • Doi Number: 10.1080/03067319.2019.1619716
  • Journal Name: INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1298-1312
  • Keywords: Catechol, toxic, sensor, determination, electrochemical behavior, GLASSY-CARBON ELECTRODE, ELECTROCHEMICAL SENSOR, SELECTIVE DETERMINATION, PASTE ELECTRODE, REDUCED GRAPHENE, ASCORBIC-ACID, IONIC LIQUID, URIC-ACID, HYDROQUINONE, NANOTUBES
  • Gazi University Affiliated: Yes

Abstract

In this work, a simple, sensitive and rapid method for the determination of trace amounts of catechol (CT) in aqueous media has been suggested. For this purpose, poly(1H-1,2,4-triazole-3-thiol) film was electrochemically deposited successfully at the gold electrode (Au/T3T). The electrochemical behaviour of CT was studied on the Au/T3T electrode by the cyclic voltammetry and differential pulse voltammetry techniques. The anodic peak current value and the concentration of CT showed a good linear relationship in the range of 0.015-2.8 mu M. The limit of detection was found as 1.88 nM (S/N = 3). Besides, the reproducibility, repeatability, stability and interference measurements were also assayed. This sensor was applied successfully for the detection of CT in synthetic and real samples.