Flow Injection Amperometric Detection of Sulfide Using a Prussian Blue Modified Glassy Carbon Electrode
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Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Japan Soc Analytical Chemistry
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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 HA 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 mu L; 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 mu M. The detection limit was found to be 0.3 mu M 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.
Açıklama
Anahtar Kelimeler
Methylene-Blue, Photoelectrocatalytic Oxidation, Electrocatalytic Oxidation, Selective Determination, Ferrocene Sulfonates, Hydrogen-Sulfide, Film, Chromatography, Reduction, System
Kaynak
Analytical Sciences
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
28
Sayı
11
