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An Electrochemical Sensor for Reducing Sugars Based on a Glassy Carbon Electrode Modified with Electropolymerized Molecularly Imprinted Poly‐ o‐ phenylenediamine Film
Author(s) -
Wang Qian,
Paim Leonardo Lataro,
Zhang Xiuhua,
Wang Shengfu,
Stradiotto Nelson Ramos
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400114
Subject(s) - differential pulse voltammetry , detection limit , electrochemical gas sensor , electrochemistry , fructose , glassy carbon , materials science , electrode , voltammetry , cyclic voltammetry , peak current , nuclear chemistry , chemistry , analytical chemistry (journal) , chromatography , organic chemistry
Abstract An electrochemical sensor based on electropolymerizing o‐ phenylenediamine ( o‐ PD) on a glassy carbon electrode (GCE) was developed for determination of reducing sugars. The molecular imprinted sensor was tested by differential pulse voltammetry (DPV) to verify the changes in peak currents of hexacyanoferrate. Under the optimum analytical conditions, the current change was linear to the logarithm of glucose and fructose concentration from 0.25 to 25 µM. The detection limit of glucose and fructose were 0.185 µM and 0.173 µM, respectively. Besides, the applicability of the sensitive sensor has been successfully evaluated by determining reducing sugars in the samples from sugarcane industries.