Otro
An Electrochemical Sensor for Reducing Sugars Based on a Glassy Carbon Electrode Modified with Electropolymerized Molecularly Imprinted Poly-o-phenylenediamine Film
Registro en:
Electroanalysis. Weinheim: Wiley-v C H Verlag Gmbh, v. 26, n. 7, p. 1612-1622, 2014.
1040-0397
10.1002/elan.201400114
WOS:000339483200023
Autor
Wang, Qian
Paim, Leonardo Lataro
Zhang, Xiuhua
Wang, Shengfu
Stradiotto, Nelson Ramos
Resumen
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 mu M. The detection limit of glucose and fructose were 0.185 mu M and 0.173 mu M, respectively. Besides, the applicability of the sensitive sensor has been successfully evaluated by determining reducing sugars in the samples from sugarcane industries. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)