Electrophoretic Studies of Binary and Ternary Complexes of Some Metal Ions with Alizarin

Abstract

Alizarin and its derivatives are well known colorimetric reagents for cations. The presence of two hydroxyl groups in positions 1 and 2 with respect to the quinoid oxygen makes it very suitable for the formation of chelates with metal ion. A number of studies have been carried out on the detection and determination of a number of transition metal 1,2,3 . ABSTRACTQuantitative studies of complex formation from the determination of stability constants of the binary complexes of metal (II)/(III)-alizarin and also the mixed complexes of metal (II)/(III)-alizarin-NTA have been described using paper electrophoretic technique. The stability constant of metal-(II)/(III)-alizarin are found to be 10 5.14 , 104.84