Spectrophotometric determination of potassium in river water based on solvent extraction of the complex formed with a crown ether and an anionic azo dye using flow injection

Indirect spectrophotometric determinatio

Indirect spectrophotometric determination of potassium ion in water based on the precipitation with tetraphenylborate ion and a crown ether using flow injection

✍ Shoji Motomizu; Ko Yoshida; Kyoji Tôei 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 552 KB

A preclpltatlon reaction for alkah metal Ions IS proposed Crown ether complexes of alkah metal 1011s were found to be less soluble than the alkah metal Ions themselves m water when they form Ion assoclatlon complexes with tetraphenylborate Ion (TPB-) as a counter Ion The apparent solubdlty products