Determination of mixed stability constants of lead(II)/uranyl(II)-NTA-cysteine complexes by paper electrophoresis
| Autor: | Brij Bhushan Tewari |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Bulletin of the Chemical Society of Ethiopia, Vol 19, Iss 2, Pp 257-265 (2005) |
| Druh dokumentu: | article |
| ISSN: | 1011-3924 1726-801X |
| Popis: | A method involving the use of paper ionophoresis is described for the study of equilibria in mixed – ligand complex systems in solution. The technique is based on the movement of a spot of metal ion under an electric field with the complexants added to the background electrolyte at pH 8.5. The stability constants of the complexes Pb(II) – nitrilotriacetate – cysteine and UO2(II) – nitrilotriacetate – cysteine are found to be 5.35 plus or minus 0.02 and 6.27 plus or minus 0.07 (logarithm of stability constant values) at ionic strength 0.1 M and a temperature of 35 0C. |
| Databáze: | Directory of Open Access Journals |
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