Flow injection amperometric detection of sulfide using a prussian blue modified glassy carbon electrode.
Anal Sci
; 28(11): 1075-80, 2012.
Article
em En
| MEDLINE
| ID: mdl-23149608
ABSTRACT
This study investigates a new approach for the electrocatalytic determination of sulfide in a flow injection analysis (FIA) system using a Prussian blue modified glassy carbon electrode (PB/GCE). The results from experiments show that PB/GCE significantly enhances the electrocatalytic activity towards sulfide oxidation. A homemade flow electrochemical cell was used to perform the electrocatalytic determination of sulfide in the FIA system. The currents obtained from amperometric measurements in the FIA system at optimum conditions (carrier solution, pH 8.0; Britton-Robinson buffer solution containing 0.1 M KCl; flow rate, 1.4 mL/min; transmission tubing length, 10 cm; injection volume, 100 µL; constant applied potential, +150 mV vs. Ag/AgCl/KClsat) were linearly correlated with the sulfide concentration. A calibration curve was obtained for sulfide concentrations in the range of 0.5 - 100 µM. The detection limit was found to be 0.3 µM for the amperometric method. The proposed method was successfully applied to wastewater sample. Finally, results from sulfide measurements by PB/GCE were in good agreement with those obtained from the spectrophotometric method.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sulfetos
/
Carbono
/
Análise de Injeção de Fluxo
/
Ferrocianetos
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Anal Sci
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Turquia