About this document
Sulfite Analysis Methods Overview by TaniaCarpio is a document available to read on EtoBox.
This document describes methods for analyzing sulfite (SO32-) ions in water samples. The iodometric titration method uses a standardized potassium iodide-iodate titrant to react with SO32- ions in an acidified sample. Excess iodine forms a blue complex with starch indicator at the endpoint. The phenanthroline method uses nitrogen gas to evolve SO2 from the sample, which is then trapped in a solution containing ferric ion and phenanthroline. SO2 reduces ferric iron, forming an orange complex that is measured
- Author
- TaniaCarpio
- Language
- EN