Polarometrische Bestimmung von Methylenblau mit Phosphorwolframsäure

Amperometric, bipotentiometric, and coulometric titration

“…RPE titration with thiosalicylamide has been used to determine silver, gold(III), mercury(II), and palladium (25). Tungstophosphoric acid has been used to titrate methylene blue in HC1 medium (278).…”

Ion-selective electrode with a film membrane based on trioctylhydroxybenzenesulfonic acid for determining Methylene Blue

“…Methylene Blue is determined by spectrophotometry [4], oxidation-reduction colorimetric titration [5,6], nonaqueous acid-base titration and gravimetry [7], polarography [8][9][10], potentiometric titration [6,7,[11][12][13][14], and direct potentiometry [15]. It should be noted that, although the use of electrodes for the determination of Methylene Blue was described in a number of articles [6,7,[11][12][13][14], methods for its determination with the use of electrodes are indirect (in the majority of cases, back titration is used), which undoubtedly deteriorates the accuracy of the results of determinations.…”