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Simultaneous detection of dopamine and uric acid at cobalt (II) octanitro phthalocyanine modified carbon paste electrode

R.Raghavendra Naik, E.Niranjana, B.E.Kumara Swamy* , B.S.Sherigara, K.R.Venugopala Reddy, H.Jayadevappa

Cobalt (II) octanitro phthalocyanine modified carbon paste electrode (Co (II) ONTPc/CPE) was fabricated and was applied to simultaneous determination of dopamine and uric acid. The modified electrode resolved the overlapped voltammetric responses of dopamine and uric acid in to two well defined cyclic voltammetric peaks. Our results showed that the electrocatalytic activity of Co (II) ONTPc/CPE is more when compared to bare CPE. This electrode can be used to allowthe determination ‘of dopamine in the presence of uric acid. The modified electrode showed good selectivity, stability and antifouling properties.