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UV spectrophotometric microdetermination of L-DOPA based on complex formation with copper(II)ion
(Marcel Dekker Inc, New York, 1997)
The UV spectrophotometric investigations obtained for the reaction between L-DOPA and copper(II)ion contribute to the clarification of equilibrium conditions of the complex formation both in the excess of metal ion and ...
Spectrophotometric determination of fluorometholone in pharmaceuticals using 1,4-dihydrazinophthalazine
(Marcel Dekker Inc, New York, 1996)
A sensitive and simple spectrophotometric method for the determination of fluorometholone in pharmaceutical formulations using 1,4-dihydrazinophthalazine (1,4-DHPHT; dihydralazine) as the reagent is presented. The yellow ...
Spectrophotometric determination of hesperidin by Al(III)-hesperidin complex in water-methanol solution
(Marcel Dekker Inc, New York, 1997)
The composition and the stability constant of the Al(III)-hesperidin complex were determined by suitable spectrophotometric methods and pH measurements. The formation of the complex, whose concentration stability constant ...
Spectrophotometric Determination of Methandienone in Tablets Using 1.4-Dihydrazinophthalazine
(Analytical Letters, 1992)
A simple and sensitive method for the determination of methandienone in tablets using 1.4-dihydrazinophthalazine as the reagent is presented. The yellow coloured dihydralazinhydrazone shows the maximum at 401 nm and molar ...