Journal :   Asian Journal of Research in Chemistry

Volume No. :   7

Issue No. :  2

Year :  2014

Pages :   194-199

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Characterization of L-cysteine modified Wax Impregnated Graphite Electrode and used for the Cyclic Voltammetry Analysis of Copper



Address:   B. Marichamy, M.R. Paramaguru, N. Ramalakshmi*
Post Graduate and Research Department of Chemistry, Presidency College (Autonomous), Chennai, Tamil Nadu, India
*Corresponding Author
DOI No:

ABSTRACT:
L-cysteine (ligand) modified Wax Impregnated Graphite Electrode (WIGE) is used for detection of copper ions in aqueous solution. The L-cysteine modified WIGE is characterized by scanning electron microscopy and energy dispersive X-ray analysis. The electrochemical behavior of copper ions on L-Cysteine modified WIGE is studied through scan rate effect and pH study. The results indicated that cyclic voltammetric peak currents have a linear relationship with scan rate. The detection limit could be estimated as 5x10-5mM for Cu(II) ion by cyclic voltammetric method. The interference study is performed for equal molar concentrations of Cu(II), Cd(II) and Hg(II) ion on ligand modified WIGE. The diffusion co-efficient values for copper on electrode surface is calculated from chronocoulometry method.
KEYWORDS:
Sensor, cyclic voltammetry, EDX, SEM, chronocoulometry, interference study.
Cite:
B. Marichamy, M.R. Paramaguru, N. Ramalakshmi. Characterization of L-cysteine modified Wax Impregnated Graphite Electrode and used for the Cyclic Voltammetry Analysis of Copper. Asian J. Research Chem. 7(2): February 2014; Page 194-199.
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