Novel Electrochemically Treated Graphite Pencil Electrode Surfaces for the Determination of Trace α-Naphthol in Water Samples

Azeem Rana, Abdel Nasser Kawde*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

An electrochemically treated graphite pencil electrode (PGPE) has been simply prepared for trace level determination of α-naphthol. The pretreatment of GPE surfaces is conducted in 0.8 M NaOH by cycling the potential between +1.3 and +1.9 V for 50 CV segments at a scan rate of 100 mV s−1. The influence of the pretreatment is studied extensively, and optimum conditions are obtained. Linear sweep anodic stripping voltammetry (LSASV) is used for the determination of α-naphthol. Based on the constructed calibration curve, a linear range of 0.01 μM to 2.0 μM with a detection limit of 1.5 nM (S/N=3) is obtained. The results reveal that the electrochemical treatment of the GPE surface improves its electrochemical catalytic activity with reference to surfaces of the non-treated GPE. The present method is applied for the determination of trace α-naphthol in real water samples.

Original languageEnglish
Pages (from-to)668-676
Number of pages9
JournalJournal of the Chinese Chemical Society
Volume63
Issue number8
DOIs
StatePublished - 1 Aug 2016

Bibliographical note

Publisher Copyright:
Copyright © 2016 The Chemical Society Located in Taipei & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany

Keywords

  • Electrochemistry
  • Linear sweep anodic stripping voltammetry
  • Pretreated graphite pencil electrode
  • Water samples
  • α-naphthol

ASJC Scopus subject areas

  • General Chemistry

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