Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2018-11-01

Journal: INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

Included Journals: SCIE

Volume: 13

Issue: 11

Page Number: 10454-10469

ISSN: 1452-3981

Key Words: Schiff base complexes; synthesize; modified electrode; L-cysteine

Abstract: A p-aldehyde benzoic acid adamantine ester (D1), 4-formyl benzoic acid adamantane ester shrinking o-aminophenol Schiff base (D2) and its nickel complexes (D3) were synthesized and characterized by thermogravimetric analysis, H-1-NMR and UV-Vis spectrum. A glassy carbon electrode was chemically modified by adamantine esters Schiff base nickel complexes which was employed for determination of L-cysteine. The influences of the effective parameters such as the pH of supporting electrolyte, scanning rate and the time of maceration adsorption were investigated. The electrochemical responses to L-cysteine have a good linearity in the range of 0.01 and 0.08 mmol/L with the detection limit of 5.0 mu mol/L. The recovery rate was between 97.88% and 101.96% with the relative standard deviation of 3.9%. Therefore, a new detection method for the L-cysteine content had been established in food based on Schiff base nickel complexes.