Electrocatalytic Reduction of Peroxy Disulfate on the Palladized Aluminum Electrode Modified by Prussian Blue: Application to the Analysis of Decolorizing Powders

Abstract

The mechanism of catalytic reduction of peroxydisulfate on the palladized aluminum electrode modified by Prussian blue (PB/Pd-Al) was studied. The charge transfer-rate limiting step as well as overall reduction reaction of S 2 O 8 2À is found to be a one-electron and two-electron abstraction respectively. The modified electrode is exploited for the hydrodynamic amperometry of peroxydisulfate. It is found that the calibration graph is linear in the S 2 O 8 2À concentration range 5 10 À6 -1.5 10 À3 mol L À1. The detection limit of the method was 2.4 10The method was successfully used for the determination of S 2 O 8 2À in decolorizing powders

Design of a New Carbon Paste Electrode Modified with TiO2 Nanoparticles to Use in an Electrochemical Study of Codeine and Simultaneous Determination of Codeine and Acetaminophen in Human Plasma Serum Samples

“…In addition, a comparison of the proposed method with other electrochemical methods is listed in Table 1 [12,[44][45][46]. Comparison with the analytical characteristics of the previous reports for COD determinations showed that the prepared modified electrode in the present work has a much lower detection limit with a wide linear dynamic range.…”

“…Some electrochemical methods have been reported in the literature for determination of 3-methylmorphine [11,12]. Ganjali et al described a new electrochemical method with an Au microelectrode as working electrode, based on FIA and fast Fourier transforms cyclic voltammetry (FFTCV) for the determination of COD alone in human plasma sample [11].…”

“…Pournaghi-Azar and Saadatirad have described determination of COD using the aluminum electrode modified by palladium with detection limit of 5 mmol L À1 . This electrode is usable in electroanalysis of COD in synthetic tablet samples [12]. Acetaminophen (paracetamol, N-acetyl-p-aminophenol, AC) ( Figure 1b) is an extensively used antipyretic analgesic drug and a suitable alternative for patients who are sensitive to aspirin [13].…”

Asymmetric Modification of TiO2 Nanofibers with Gold by Electric‐Field‐Assisted Photochemistry

“…In comparison, electroanalytical methods have advantages such as high sensitivity, inexpensive equipment, low costs, and relative simplicity. Some electrochemical methods have been reported in the literature for determination of 3‐methylmorphine 11, 12. Ganjali et al.…”

“…Pournaghi‐Azar and Saadatirad have described determination of COD using the aluminum electrode modified by palladium with detection limit of 5 µmol L −1 . This electrode is usable in electroanalysis of COD in synthetic tablet samples 12. Acetaminophen (paracetamol, N ‐acetyl‐ p ‐aminophenol, AC) (Figure 1b) is an extensively used antipyretic analgesic drug and a suitable alternative for patients who are sensitive to aspirin 13.…”