Comparative studies of the group III: a elementsion association with fluorescein derivativesandaliphatic amines and spectrophotometric determination of these elements

ABSTRACT

Formations of the coloured ion-associates of M-aliphatic amine cationic chelate complex [M-L1]3+ with fluorescein derivatives [L[2]] have been studied. The molar ratio of the components of these compounds has been determined and the formula [M[L[1]2]3+.[L[2]][2-] is pro-posed. Effect of the aliphatic amines and the metal on the formation of the ternary ion-associates was described. The characteristics of these ion-associates were determined. The possible interferences from foreign ions was also carefully investigated. Simple, rapid and sensitive method for the spectrophotometric determination of the group III-A elements was developed