Winkler test for dissolved oxygen
Método de Winkler
- Date
- 1888 · confidence low
- Place
- Budapest, Hungary
- Credited to
- Lajos Winkler (1888)
- Field
- Matter & energy
What it is
Volumetric method for determining dissolved oxygen in water, based on forming a manganese(II) hydroxide precipitate that reacts with iodide and is titrated with thiosulfate; still a reference method in water-quality testing.
What it led to
- water-quality control and treatment plants
- eutrophication studies of lakes and oceans
- standardization of limnological analysis
- electronic dissolved-oxygen sensors calibrated against this method