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- W2362557523 abstract "AIM To study the electrochemical behavior and reduction mechanism of meloxicam (MLX) in acetate buffer solution. A new method for the determination of MLX was established by adsorptive stripping voltammetry. METHODS Linear sweep polarography, cyclic voltammetry and pulse polarography were used in the present research. RESULTS In a supporting electrolyte containing HAc NaAc (pH 4 76), a reduction peak of MLX was observed by linear sweep voltammetry at Hg electrode. The peak showed a potential of -1 19 V ( vs Ag/AgCl) and adsorptive characteristics. The adsorbed species is most probably the neutral molecule of MLX. The saturated adsorption of MLX at Hg electrode is 1 53×10 -10 mol·cm -2 and every MLX molecule occupied an area of 1 08 nm 2. On the surface of the hanging mercury drop electrode, the adsorption of MLX obeys Frumkin adsorption isotherm. The adsorption coefficient (β) is 1 65×10 6. The number of electrons transferred per MLX molecule ( n ) is 2 and the transfer coefficient (α) of the irreversible adsorptive system of MLX is 0 84. The rate constant of surface electrode reaction ( k s) is 0 19·s -1 . The mechanism of electrochemical reduction of MLX at Hg electrode has been explored. The detection limit of the adsorptive stripping voltammetry of MLX is 1 0×10 -9 mol·L -1 under optimized conditions. CONCLUSION This indicates an irreversible process with adsorption." @default.
- W2362557523 created "2016-06-24" @default.
- W2362557523 creator A5074422823 @default.
- W2362557523 date "2000-01-01" @default.
- W2362557523 modified "2023-09-23" @default.
- W2362557523 title "ADSORPTIVE VOLTAMMETRIC BEHAVIOR OF MELOXICAM" @default.
- W2362557523 hasPublicationYear "2000" @default.
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