Author/Authors :
dos Santos، Daniela Pereira نويسنده Institute of Chemistry, University of S?o Paulo State - UNESP, C.P. 355, 14801-970 Araraquara, SP, Brazil , , Totta Brunelli، Tamara Fernanda نويسنده Institute of Chemistry, University of S?o Paulo State - UNESP, C.P. 355, 14801-970 Araraquara, SP, Brazil , , Bianchi، Alex Rodrigo نويسنده Institute of Chemistry, University of S?o Paulo State - UNESP, C.P. 355, 14801-970 Araraquara, SP, Brazil , , Boldrin Zanoni، Maria Valnice نويسنده Institute of Chemistry, University of S?o Paulo State - UNESP, C.P. 355, 14801-970 Araraquara, SP, Brazil ,
Abstract :
A poly glutamic acid film modified electrode exhibited a catalytic response to
guanosine oxidation potential and higher peak current value. Linear concentration curve was
obtained in the concentration interval of 1.0 a 10.0 ?mol L-1 in 0.04 mol L-1 B-R buffer pH
2.0 with a detection limit of 0.198 ?mol L-1. The electrode was used for the determination of
guanosine in the potential of +1.1 V (vs. Ag/AgCl) using differential pulse voltammetry
(DPV) at urine sample with good recovery.
