Voltammetric separation of dopamine and ascorbic acid with graphite electrodes modified with ultrafine TiO2

作者: Qingwen Li , Yiming Wang , Guoan Luo

DOI: 10.1016/S0928-4931(00)00132-6

关键词:

摘要: Abstract In this paper, a new method was introduced to separate dopamine and ascorbic acid simultaneously. When graphite electrode modified with nanosized TiO 2 powder, it exerted little influence on the redox behavior of dopamine, but led anodic potential move negatively which enlarged separation between some extent. Better could be achieved bare C at higher scan rate. The catalytical ability metal oxide voltammetric discussed as well.

参考文章(8)
R. Mark Wightman, Leslie J. May, Adrian C. Michael, Detection of dopamine dynamics in the brain Analytical Chemistry. ,vol. 60, pp. 769- 779 ,(1988) , 10.1021/AC00164A001
G. Nagy, G.A. Gerhardt, A.F. Oke, M.E. Rice, R.N. Adams, M.N. Szentirmay, C.R. Martin, Ion exchange and transport of neurotransmitters in nation films on conventional and microelectrode surfaces Journal of Electroanalytical Chemistry. ,vol. 188, pp. 85- 94 ,(1985) , 10.1016/S0022-0728(85)80052-8
R. S. Nicholson, Theory and Application of Cyclic Voltammetry for Measurement of Electrode Reaction Kinetics. Analytical Chemistry. ,vol. 37, pp. 1351- 1355 ,(1965) , 10.1021/AC60230A016
ChenChan Hsueh, Roberto Bravo, Alonso J. Jaramillo, Anna Brajter-Toth, Surface and kinetic enhancement of selectivity and sensitivity in analysis with fast scan voltammetry at scan rates above 1000 V/s Analytica Chimica Acta. ,vol. 349, pp. 67- 76 ,(1997) , 10.1016/S0003-2670(97)00209-2
J.O. Rinne, Tuula Myllykyla¨, Pirkko Lo¨nnberg, Pa¨ivi Marjama¨ki, A postmortem study of brain nicotinic receptors in Parkinson's and Alzheimer's disease. Brain Research. ,vol. 547, pp. 167- 170 ,(1991) , 10.1016/0006-8993(91)90588-M
Royce W. Murray, Chemically modified electrodes Accounts of Chemical Research. ,vol. 13, pp. 135- 141 ,(1980) , 10.1021/AR50149A002