Potentiometrische Titrationen mit Kaliumjodat

Trimethylphenylammonium Iodide, Quantitative Precipitant for Bismuth

“…Ethylenediaminecobalt(III) chloride (1, 10, 14) and diethylenediaminedithiocyanatocobalt(III) thiocyanate (10,17) quantitatively precipitate the bismuth ion, but the precipitate must be vacuum dried in order to prevent decomposition. 8-Quinolinol (•5, .9), S-quinolinol-5-sulfonic acid (4), and dithizone (12) afford satisfactory precipitates, but none show any selectivity toward bismuth, each precipitating practically all the heavy metals.…”

Potentiometric Titrations

“…Maksimyuk and Ptitsyn (129) have investigated the reaction between thiosulfate and hypochlorite. Potassium Iodate has been used by Spacu and Spacu (196,197) for the indirect determination of thorium or of lanthanum (198). Singh and Rehmann (194) used potassium iodate in the direct estimation of aromatic amines.…”

Inorganic Volumetric Analysis

“…By adding cuprous iodide, oxalic acid, or ferrous sulfate, reactions are catalyzed to such an extent that iodometric determinations of persulfate and vanadate can be made (161)(162)(163)(164)• Amperometric titration of dilute chromate solutions ( 95) is another application of the interesting rotating platinum electrode. Determinations of arsenic by coulonietric titration by electrically generated bromine using an amperometric end point have been made (144)• Potentiometric methods have been advocated for beryllium by titrating with sodium fluoride (199); selenium and tellurium with chromous ion (123); nitric acid in oleum (128); phosphate by an indirect method (63); and thorium with potassium iodate (190). An important study on conditions for potentiometric titration of titanium has been made using a mercury indicating electrode (119).…”