Détermination d'hydrazines et d'hydrazides à l'aide du cérium(IV), du manganése(III) et de l'argent(II) produits coulométriquement

Amperometric, bipotentiometric, and coulometric titration

“…The coulometric titration of rhenium(IV) and rhenium(V) with cerium(IV) has been monitored both biamperometrically and spectrophotometrically (48). Derivatives of hydroquinone and of 4-aminophenol (45), and hydrazine and hydrazides (46) have been determined by coulometric titration with cerium(IV).…”

“…Manganese(II) in alkaline tartrate medium has been coulometrically titrated with nitrosodisulfonate to a potentiometric or biamperometric end point (236). Coulometric titration with manganese(III) has been used to determine uranium(IV) in alloys and carbides (35, 36) and in nuclear fuel (160), rhenium in various oxidation states (4, 49), hydrazine (46,178,215), hydroquinone, 4-aminophenol (45), and various other compounds (46,178,215). Manganese (III) has been amperometrically titrated with thiosalicylic acid (22) and with 8-mercaptoquinoline, which was also used to titrate manganese(VI) and manganese(VII) (295).…”

Determination of isoniazid in drugs with 2-iodoxybenzoate

“…Other oxidizing agents have also been proposed (3)(4)(5)(6)(7)(8)(9)(10) but removal of reducing substances is necessary. Reaction with bromine is more satisfactory.…”