Indium Tin Oxide Electrode Modified by a NH₂⁺ Ion Implantation Technique for Determination of Melamine

Abstract

The purpose of this study was to develop a novel, reliable and highly sensitive electrochemical method for detection of melamine. 1.0 10 À4 M melamine was hydrolyzed to ammeline in 0.5 M H 2 SO 4 at 80 8C for 20 min. Subsequently it was electrochemically detected by cyclic voltammetry (CV) in 0.1 M phosphate buffer solution (pH 7.0) at NH 2 / ITO electrode. The method detected melamine in the linear range of 1.0 10 À10 -5.0 10 À8 M and the detection limit was 3.0 10 À11 M. The method had been successfully applied to the determination of melamine in milk powder and human urine samples.

Electrochemical determination of trace pesticide residues based on multiwalled carbon nanotube grafted acryloyloxy ferrocene carboxylates with different spacers

“…CV is a popular and important technique for the study of electrochemistry and has proven to be very useful in obtaining thermodynamic and kinetic information of electrochemical reactions such as the peak potentials and reaction rates. 39 The electrochemical properties of the MWCNTs graed polymer modied electrodes with different chain length spacers (ethyl and butyl groups) between the main chains and ferrocene groups were investigated, as depicted in Fig. 6(A).…”