Spectrophotometric Determination of Selenium (IV) Using Methdilazine Hydrochloride

Authors : Mahaveer B MELWANKI, Jaldappa SEETHARAMAPPA

Pages : 287-290

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Methdilazine hydrochloride is proposed as a selective and sensitive reagent for the spectrophotometric determination of selenium insert ignore into journalissuearticles values(IV);. The reagent forms a red radical cation by selenimum insert ignore into journalissuearticles values(IV); in hydrochloric acid medium and exhibits an absorption maximum at 513 nm. Beer`s law is valid over the concentration range 0.1-2.3 mg1-1 of selenium insert ignore into journalissuearticles values(IV);. Sandell`s sensitivity of the reaction is found to be 3.57 ng cm-2 and the molar extinction coefficient is 9.32 x 104 1 mol-1 cm-1 at 513 nm. The effects of acidity, reagent concentration, temperature and diverse ions upon the absorbance of the red species are critically assessed. The proposed method has been applied for the determination of selenium in alloys.
Keywords : Turk J Chem, 24, 2000, 287 290 Turk J Chem, vol 24, iss 3