SPECTROPHOTOMETRIC STUDY OF THE COMPLEXATION EQUILIBRIA BETWEEN NI(II) AND DISODIUM 2-(1'-H-1',2',4'-TRIAZOLYL-3'-AZO)-1-NAPHTHYLAMINE-3,6-DISULFONATE AND ON THE DISPLACEMENT REACTION OF THE LIGAND BY NITRILETRIACETIC ACID

1. ARIAS, JJ
2. JIMENEZ, F
3. JIMENEZ, AI