Abstract

In the work ionophoretic technique has been used for the study of Fe(III), Cu(II), Ni(II) and Co(II)-cysteine binary and Fe(III), Cu(II), Ni(II) and Co(II)-cysteine-NTA (Nitrilotriacetic acid) mixed complexes. The stability constants of metal-cysteine binary complexes are found to be 1011.30, 1010.00, 10^9.10, 10^8.90 and the stability constants of metal-cysteine-NTA mixed complexes have been found to be 10^8.40, 10^6.80, 10^6.00 10^5.50 for Fe(III), Cu(II), Ni(II) and Co(II) complexes respectively at μ = 0.1 M (HClO₄) and 25 ^°C.

Keywords

Binary complex, Ternary complex, Stability constant, Ionophoretic technique