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 language | English |
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Pages (from-to) | 668-676 |
Number of pages | 9 |
Journal | Journal of the Chinese Chemical Society |
Volume | 63 |
Issue number | 8 |
DOIs | |
State | Published - 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