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Related Experiment Videos

Simultaneous electroanalysis of peroxyacetic acid and hydrogen peroxide.

M I Awad1, C Harnoode, K Tokuda

  • 1Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.

Analytical Chemistry
|May 8, 2001
PubMed
Summary

This study demonstrates the first simultaneous electroanalysis of peroxyacetic acid (PAA) and hydrogen peroxide (H2O2). A gold electrode enabled selective detection of both analytes, crucial for environmental and industrial monitoring.

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Area of Science:

  • Electrochemistry
  • Analytical Chemistry

Background:

  • Peroxyacetic acid (PAA) and hydrogen peroxide (H2O2) are widely used oxidants.
  • Simultaneous detection of PAA and H2O2 is challenging due to their similar chemical properties.

Purpose of the Study:

  • To develop a method for the simultaneous and selective electroanalysis of PAA and H2O2.
  • To investigate the electrochemical behavior of PAA and H2O2 at different electrode materials.

Main Methods:

  • Cyclic voltammetry (CV)
  • Rotating disk electrode (RDE) voltammetry
  • Rotating ring-disk electrode (RRDE) voltammetry
  • Glassy carbon and gold electrodes were employed.

Main Results:

  • Electrode material significantly influences the reduction potentials of PAA and H2O2.

Related Experiment Videos

  • A gold electrode provided well-separated limiting currents for PAA and H2O2 reduction and H2O2 oxidation.
  • Good linear calibration curves were achieved for PAA (0.36–110 mM) and H2O2 (0.11–34 mM).

    • Conclusions:

    • Simultaneous and selective electroanalysis of PAA and H2O2 in mixtures is feasible.
    • The developed electrochemical method offers a sensitive and reliable approach for quantifying both species.