Determination of hydrogen peroxide with sensors based on heterogenous carbon materials modified with manganese dioxide
ČlánekOtevřený přístuppeer-reviewedpublishedDatum publikování
1997
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Univerzita Pardubice
Abstrakt
Three different types of MnO2-modified electrodes were investigated on their electrochemical response towards hydrogen peroxide: a bulk-modified carbon paste electrode, a film-modified carbon paste electrode and a film-modified screen printed electrode. The sensors were characterized by voltammetric (cyclic voltammetry, linear sweep voltammetry) and amperometric methods (stationary and flow conditions). The best responses were obtained with a MnO2 filmmodified screen printed carbon electrode which could be used as an electrochemical detector in flow injection analysis (FIA) using a NH3/NH4Cl buffer (0.2 M, pH 9.5) as a carrier. With FIA a detection limit (3σ) of 0.26 µg 1−1 could be achieved; the peak current was linear to the H2O2 concentration from 1 to 200.000 µg 1−1. The method could be successfully applied to the determination of H2O2 in various samples (cosmetic and medical products, rain water). With flow injection a sample frequency of 60 h−1 can be achieved.
Rozsah stran
p. 41-55
ISSN
1211-5541
Trvalý odkaz na tento záznam
Projekt
Zdrojový dokument
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 3(1997)
Vydavatelská verze
Přístup k e-verzi
open access
Název akce
ISBN
Studijní obor
Studijní program
Signatura tištěné verze
47333-3
Umístění tištěné verze
Univerzitní knihovna (studovna)