Nile Blue-hexacyanoferrate carbon paste modified electrode as an amperometric sensor for determination of hydrazine

Authors : Reza Emamali SABZI, Elnaz MINAIE, Khalil FARHADI, Mir Maqsoud GOLZAN

Pages : 901-910

View : 17 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The main problem associated with metal hexacyanoferrates insert ignore into journalissuearticles values(MHCFs); is their instability at high pH values. We synthesized a new Prussian Blue analogue, Nile-Blue hexacyanoferrate insert ignore into journalissuearticles values(NBHCF);, that remains stable in 0.2 M KOH. A carbon paste insert ignore into journalissuearticles values(CPE); chemically modified electrode insert ignore into journalissuearticles values(ME); containing NBHCF was prepared as a stable electrochemical sensor for measuring hydrazine. A detailed characterization of the electrochemical and electrocatalytic behavior of NBHCF was performed using cyclic voltammetric, chronoamperometric, differential pulse voltammetric insert ignore into journalissuearticles values(DPV); and hydrodynamic amperometric methods. The NBHCF-modified electrode produced reproducible redox peaks and resulted in a linear increase in the oxidation signal of hydrazine with increasing concentration of hydrazine in the range of 0.1-6.0 mM insert ignore into journalissuearticles values(in hydrodynamic amperometry method insert ignore into journalissuearticles values(HDA););. The electrode detection limit was 40 m M and possessed a surface coverage of G = 2.0 \times 10-8 mol cm-2.
Keywords : Modified electrode, carbon paste electrode, hexacyanoferrate, amperometric determination of hydrazine, Nile Blue hexacyanoferrate