Electrochemical Determination of Dopamine on a Glassy Carbon Electrode Modified by Using Nanostructure Ruthenium Oxide Hexacyanoferrate/Ruthenium Hexacyanoferrate Thin Film

Table 2

Kinetic parameters extracted using the EIS data obtained on the bare GCE and modified GC/RuOHCF/RuHCF electrodes in 0.1 M NH₄NO₃ at pH 5 in the presence of 1 mM DA, 𝐴=0.0314 cm², 𝐸_𝐷𝐶=+0.260 V.

Electrode	𝑅𝑠(Ω)	𝑅ct(Ω)	𝑄𝜑(μF)	𝑄dl(μF)	n
Bare GC	62.90 ± 13.00	(2.54 ± 0.45) × 10^4	—	2.20 ± 0.01	0.80
GC/RuOHCF/RuHCF	109.10 ± 0.50	874.90 ± 92.30	98.87 ± 19.47	17.94 ± 6.06	0.80

𝜒²=8.67×10⁻⁵.