Flow Injection Determination of Hydrogen Peroxide Using a Carbon Paste Electrode Modified with a Manganese Dioxide Film

A manganese dioxide film modified carbon paste electrode was developed for use as an amperometric sensor for the determination of hydrogen peroxide (H 2 O 2 ) in ammoniacal aqueous solutions. The electrode showed a stable response towards H 2 O 2 after electrochemical activation. Effects of flow rat...

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Bibliographic Details
Published in:Analytical letters 1997-12, Vol.30 (15), p.2655-2673
Main Authors: Schachl, Klemens, Alemu, Hailemichael, Kalcher, Kurt, Jezkova, Jitka, Svancara, Ivan, Vytras, Karel
Format: Article
Language:English
Subjects:
amperometry
Analytical chemistry
carbon paste electrode
Chemistry
Electrochemical methods
Exact sciences and technology
flow injection analysis
hydrogen peroxide
manganese dioxide
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Summary:A manganese dioxide film modified carbon paste electrode was developed for use as an amperometric sensor for the determination of hydrogen peroxide (H 2 O 2 ) in ammoniacal aqueous solutions. The electrode showed a stable response towards H 2 O 2 after electrochemical activation. Effects of flow rate, operating potential, concentration, injection volume and interferences were investigated. A linear response towards H 2 O 2 from 5 μg.l −1 to 450 mg.l −1 and a detection limit (3 signal-to-noise ratio) of 4.7 μg.l −1 was found. The method was employed for the determination of H 2 O 2 in rain water samples.
ISSN:0003-2719
1532-236X
DOI:10.1080/00032719708001812