Analysis of Properties of Trace Aluminium Complex Solution with Dibromo-o-Carboxy-Chlorophosphonazo

Abstract

The two  reactions were both sensitive between aluminium(III)
and dibromo-o-carboxy-chlorophosphonazo (DBKCPA) at pH 7.
The β-correction dual-wavelength spectrophotometric method was
applied to the determination of properties of aluminium complex
solutions because it was able to eliminate the interference of excess
ligand in the reaction system. The multi-coordination reaction was
found in such a complex system because the complex ratio of Al(III)
to DBKCPA was equal to 1 : 2. In addition, the investigation still
brought out the easy determination of the stepwise real molar abs.
orptivity (ε) and the stepwise or cumulative stability constant (K)
of AI-DBKCPA complex.