FLOW-INJECTION DETERMINATION OF HYDROGEN-PEROXIDE USING A CARBON-PASTE ELECTRODE MODIFIED WITH A MANGANESE-DIOXIDE FILM

Authors
SCHACHL K ALEMU H KALCHER K JEZKOVA J SVANCARA I VYTRAS K
Citation
K. Schachl et al., FLOW-INJECTION DETERMINATION OF HYDROGEN-PEROXIDE USING A CARBON-PASTE ELECTRODE MODIFIED WITH A MANGANESE-DIOXIDE FILM, Analytical letters, 30(15), 1997, pp. 2655-2673
Citations number
36
Journal title
Analytical letters → ACNP
ISSN journal
00032719
Volume
30
Issue
15
Year of publication
1997
Pages
2655 - 2673
Database
ISI
SICI code
0003-2719(1997)30:15<2655:FDOHUA>2.0.ZU;2-L
Abstract
A manganese dioxide film modified carbon paste electrode was developed for use as an amperometric sensor for the determination of hydrogen p eroxide (H2O2) in ammoniacal aqueous solutions. The electrode showed a stable response towards H2O2 after electrochemical activation. Effect s of flow rate, operating potential, concentration, injection volume a nd interferences were investigated. A linear response towards H2O2 fro m 5 mu g.l(-1) to 450 mg.l(-1) and a detection limit (3 signal-to-nois e ratio) of 4.7 mu g.l(-1) was found. The method was employed for the determination of H2O2 in rain water samples.