Home List of Titles Electrocatalytic oxidation of hydrazine at the poly(glutamic acid) chemically modified electrode and its amperometric determination
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/150058
- Electrocatalytic oxidation of hydrazine at the poly(glutamic acid) chemically modified electrode and its amperometric determination
- Yu, Ai-Min; Chen, Hong-Yuan
- The electrochemical polymerization of glutamic acid at the glassy carbon electrode was investigated in phosphate buffer solution by cyclic voltammetry. The applied voltage range, pH of electrolyte, cyclic number were explored for optimal polymerization conditions. The resulting film exhibits an electrocatalytic ability to hydrazine, reducing the overpotential by 500mV. The electrocatalytic response of hydrazine is evaluated with regard to pH, scan rate, applied voltage, hydrazine concentration and other variables. The rate constant of the catalytic reaction was 1.2 x 10^4 M^-1.s^-1. When used as amperometric detector, the modified electrode yields a detection limit of 1 x 10^-8 M hydrazine. The electrode is rather stable even after use for a month and a reproducible response was obtained.
- Publication type
- Journal article
- Analytical Letters, Vol. 30, no. 3 (Feb 1997), pp. 599-607
- Publication year
- FOR Code(s)
- 0301 Analytical Chemistry
- Amperometric detection; Electrocatalytic oxidation; Hydrazine; Poly(glutamic acid)CME
- Marcel Dekker (now an imprint of Taylor & Francis)
- Publisher URL
- Copyright © 1997 by Marcel Dekker, Inc. The copyright policy of the publisher allows the accepted manuscript of the paper to be reproduced here after a publisher-imposed embargo period.
- Peer reviewed