Citation: Jahan Bakhsh Raoof, Reza Ojani, Hassan Karimi-Maleh. Electrocatalytic oxidation of thiosulfate at 2,7-bis (ferrocenylethyl)-fluoren-9-one-modified carbon paste electrode (2,7-BFEFMCPE):Application to the catalytic determination of thiosulfate in real sample[J]. Chinese Chemical Letters, ;2010, 21(12): 1462-1466. doi: 10.1016/j.cclet.2010.06.004 shu

Electrocatalytic oxidation of thiosulfate at 2,7-bis (ferrocenylethyl)-fluoren-9-one-modified carbon paste electrode (2,7-BFEFMCPE):Application to the catalytic determination of thiosulfate in real sample

Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran

Received Date: 7 April 2010

Electrocatalytic oxidation of thiosulfate at the 2, 7-BFEFMCPE occurs at a potential about 460 mV less positive than that unmodified carbon paste electrode. The diffusion coefficient (=5.6×10^-5 cm² s^-1), the kinetic parameters such as electron transfer coefficient, (=0.5) and k_h (=1.21×10^-3 cm s^-1) of thiosulfate oxidation at the surface of, 2, 7-BFEFMCPE were determined. The electrocatalytic oxidation peak current of thiosulfate showed two linear dynamic ranges (0.00 (0-0.009 mmol/L and 0.009-0.900 mmol/L) and a detection limit of 0.00015 mmol/L. This method was also examined as a new electrochemical sensor for the determination of thiosulfate in real sample.
- 2,7-Bis (ferroeenylethyl)-fluoren-9-one,
- Thiosulfate,
- Electrocatalysis,
- Cyclic voltammetry,
- Differential pulse voltammetry
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