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Journal of Nanomaterials
Volume 2016, Article ID 4049730, 10 pages
http://dx.doi.org/10.1155/2016/4049730
Research Article

A Sensor for the Determination of Lindane Using PANI/Zn, Fe(III) Oxides and Nylon 6,6/MWCNT/Zn, Fe(III) Oxides Nanofibers Modified Glassy Carbon Electrode

1Department of Chemistry, School of Mathematics and Physical Sciences, Faculty of Agriculture, Science and Technology, North-West University, Mafikeng Campus, Private Bag Box X2046, Mmabatho 2735, South Africa
2Material Science Innovation and Modelling (MaSIM) Research Focus Area, Faculty of Agriculture, Science and Technology, North-West University, Mafikeng Campus, Private Bag Box X2046, Mmabatho 2735, South Africa
3Department of Chemistry, Obafemi Awolowo University, Ile-Ife 220005, Nigeria

Received 10 November 2015; Accepted 3 January 2016

Academic Editor: Ungyu Paik

Copyright © 2016 Omolola E. Fayemi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A simple reproducible and environmentally friendly PANI/Zn, Fe(III) and Nylon 6,6/MWCNT/Zn, Fe(III) oxides nanofibers modified glassy carbon electrode was prepared and used for the electrochemical reduction of lindane. The modified electrodes offer a high sensing current for lindane. The modified electrodes were highly stable with respect to time, so that the single electrode can be used for the multiple analysis of the lindane sample. Cyclic voltammetry and square wave voltammetry were used as the sensing techniques. The dynamic range for the lindane determination was between 9.9 × 10−12 mol/L and 5 × 10−6 mol/L with detection limits of 51 and 32 nM for Nylon 6,6/MWCNT/ZnO and Nylon 6,6/MWCNT/Fe3O4 sensors, respectively. The LoD value reveals that the best electrode is Nylon 6,6/MWCNT/Fe3O4. The analytical utility of the proposed method was checked with drinking water samples.