2025 SMSI Bannerklein

P1.1.22 Chitosan Modified Gold Film Microelectrode for the Determination of Iodide

Event
14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany
Chapter
P1.1 Biosensors
Author(s)
Y. Zhang, M. Wang - Institute of Microanalytical Systems, Department of Chemistry, Zhejiang University (China)
Pages
877 - 879
DOI
10.5162/IMCS2012/P1.1.22
ISBN
978-3-9813484-2-2
Price
free

Abstract

A simple electrochemical method for iodide detection using colloid Au/chitosan modified gold film microelectrode was developed. The modified electrode was prepared by coating colloid Au/chitosan membrane on the surface of a gold film microelectrode, whose working area could be easily adjusted as required. The detection was carried out in 0.1 mol·L^-1 KH2PO4 (pH=3) solution, and the obtained Anodic Stripping Voltammetry (ASV) current response increased proportionally with iodide concentration in the range of 3.32×10^-7 mol·L^-1~1.57×10^-2 mol·L^-1 with a correlation coefficient of 0.9996. Compared with the commercial iodide selective electrode, it is more sensitive especially at lower concentrations.

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