If sulfonato ligands are to be used in metal ion preconcentration techniques based on ion-exchange, the chelate stability constant must be available. An ion-exchange procedure is described for the determination of the stability constants for some metal-Plasmocorinth B complexes. The results are compared with those obtained spectrophotometrically. log K values are in good agreement for two methods. The enrichment of anionic complexes is obtained with an ion-exchange procedure.
Ion exchange for the determination of stability constants of metal-Plasmocorinth B complexes and preconcentration procedure
SARZANINI, Corrado;ABOLLINO, Ornella;MENTASTI, Edoardo
1992-01-01
Abstract
If sulfonato ligands are to be used in metal ion preconcentration techniques based on ion-exchange, the chelate stability constant must be available. An ion-exchange procedure is described for the determination of the stability constants for some metal-Plasmocorinth B complexes. The results are compared with those obtained spectrophotometrically. log K values are in good agreement for two methods. The enrichment of anionic complexes is obtained with an ion-exchange procedure.
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