FLOW-INJECTION ANALYSIS OF ASCORBIC-ACID AT A METHYLENE GREEN CHEMICALLY-MODIFIED ELECTRODE

Authors
YU AM HE CX ZHOU J CHEN HY
Citation
Am. Yu et al., FLOW-INJECTION ANALYSIS OF ASCORBIC-ACID AT A METHYLENE GREEN CHEMICALLY-MODIFIED ELECTRODE, Fresenius' journal of analytical chemistry, 357(1), 1997, pp. 84-85
Citations number
9
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
357
Issue
1
Year of publication
1997
Pages
84 - 85
Database
ISI
SICI code
0937-0633(1997)357:1<84:FAOAAA>2.0.ZU;2-P
Abstract
In flow injection analysis (FIA) of ascorbic acid, methylene green (MG ) modified carbon paste electrodes showed high catalytic activity and stability, reducing the oxidation overpotential by 400 mV. The linear response range was over 3 orders of magnitude and the detection limit was 1 x 10(-8) mol/L eq. 0.25 pmol with S/N = 3. The influence of vari ous experimental conditions was explored for optimum analytical perfor mance.