The disinfecting effect of hydrogen peroxide systems from its oxidative action which irreversibly destroys and kills the biological active systems of microorganisms.
Determination of hydrogen peroxide (H2O2) in disinfectants.
Suitable for all solutions that contain hydrogen peroxide (H2O2) but no other peroxides.
Hydrogen peroxide oxidizes iodide to iodine, which is reduced by sodium thiosulfate (Na2S2O3) and recalculated as hydrogen peroxide.
|
H2O2 + 2 NaI +H2SO4 |
→ |
I2 + Na2SO4 + 2 H2O |
|
I2 + Na2S2O3 |
→ |
2 NaI + Na2S2O3 |
If the sample contains other peroxide-containing disinfectants in addition to hydrogen peroxide (H2O2), the method T-754.01.032 Peracetic acid-based disinfectants must be used.