Nile Blue-hexacyanoferrate carbon paste modified electrode as an amperometric sensor for determination of hydrazine
| Autor: | SABZI, Reza Emamali, MINAIE, Elnaz, FARHADI, Khalil, GOLZAN, Mir Maqsoud |
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| Jazyk: | turečtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Volume: 34, Issue: 6 901-910 Turkish Journal of Chemistry |
| ISSN: | 1300-0527 1303-6130 |
| Popis: | The main problem associated with metal hexacyanoferrates (MHCFs) is their instability at high pH values. We synthesized a new Prussian Blue analogue, Nile-Blue hexacyanoferrate (NBHCF), that remains stable in 0.2 M KOH. A carbon paste (CPE) chemically modified electrode (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 (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 (in hydrodynamic amperometry method (HDA)). The electrode detection limit was 40 m M and possessed a surface coverage of G = 2.0 \times 10-8 mol cm-2. |
| Databáze: | OpenAIRE |
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