SPECTROPHOTOMETRIC DETERMINATION OF IRON(III) WITH 1,2-BIS((4-OXOPENTANE-2-ILIDEN)AMINE)ETHANE

Abstract

Complexation of iron(III) with 1,2-bis((4-oxopentane-2-iliden)amine)ethane in the presence of third components - 1,10-phenantroline, 4-aminoantipyrine and sodium dodecylsulfate is investigated by spectrophotometric method and high selective method of its definition in natural objects is worked out. It was found that in the presence of third components iron(III) forms different liganded complexes with the reagent, where in bathochromic shift is observed in the absorption spectrum and the maximum yield moves to acidic environment compared to binary complex. Effects of reactive components, time and temperature to the forming of different liganded complexes id studied and their stoichiometry is defined by different methods. It has been shown that definition of iron(III) with 1,2-bis((4-oxopentane-2-iliden)amine)ethane in the presence of 1,10-phenantroline is highly selective. The designed method is used for definition of iron in volcanic rocks of Lesser Caucasus of Kalbajar region of Azerbaijan Republic.