Title: The electrochemical detection of tartaric acid using Cu vanadate nanorods modified electrode

Authors: L.Z. Pei; T. Wei; N. Lin; Z.Y. Cai

Addresses: Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, China ' Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, China ' Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, China ' Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, China

Abstract: Cu vanadate nanorods have been used as the glassy carbon electrode (GCE) modified materials for the electrochemical detection of tartaric acid. The effects of scan rate, tartaric acid concentration and electrolytes in the electrochemical behaviours of tartaric acid in KCl solution have been analysed. Two pairs of semi-reversible cyclic voltammogram (CV) peaks are observed. The CV peaks are located at +0.12 V, −0.04 V (cvp1, cvp2) and −0.07 V, −0.41 V (cvp1′, cvp2′), respectively. The intensity of the electrochemical CV peaks increases linearly with the increase of the scan rate from 25 to 200 mVs−1, tartaric acid concentration from 0.01 to 2 mM, respectively. The detection limit is 7.6 µM and 1.3 µM for cvp1 and cvp2, respectively at a signal-to-noise ratio of 3. Cu vanadate nanorods modified GCE shows good stability.

Keywords: tartaric acid; copper vanadate nanorods; electrochemical detection; glassy carbon electrodes; GCE; nanotechnology; signal-to-noise ratio; SNR.

DOI: 10.1504/IJNBM.2015.073157

International Journal of Nano and Biomaterials, 2015 Vol.6 No.1, pp.41 - 51

Available online: 20 Nov 2015 *

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