Winkler light-dark dissolved O2 bottle
| Oxygen Concentration |
|---|
| Approach: Winkler titration (iodometric) |
| Context: discrete measurement |
| Spatial scale: mL |
| Temporal scale: in situ |
| Units: mmol O2 L-1 |
| Community captured: all |
| Co-measurements: temperature, salinity, depth |
Method Overview
Dissolved O₂ measures the gas concentrations of oxygen from the depths of interest. This measurement can be measured using the Winkler method via iodometric titration because dissolved oxygen does not directly oxidize iodide to iodine and a multi-step reaction in which manganese acts as an intermediate “transfer” agent. [1].
- ↑ Winkler, L. W. (1888). *Die Bestimmung des im Wasser gelösten Sauerstoffes*. Berichte der Deutschen Chemischen Gesellschaft, 21(2), 2843–2854. https://doi.org/10.1002/cber.188802102122