| Autor: |
Sabo, Yusuf, Jimoh, W.L.O., Baba Koki, Isa, Sholadoye, Q.O. |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Bayero Journal of Pure and Applied Sciences; Vol. 14 No. 1 (2021); 54-63 |
| ISSN: |
2006-6996 |
| DOI: |
10.4314/bajopas.v14i1.8 |
| Popis: |
Stability constants of complexes of four divalent metal ions viz. Cu2+, Pb2+,Mg2+ and Cd2+ with humic acids (HA) were determined by potentiometric titration of humic acids with the corresponding salt of the divalent metals in aqueous media under non-acid-condition. The log K (logarithm of the stability constant) ranged from 1.0942 to 2.7471 for metal-humic acid complexes were determined using point-wise computational method. The order of stability constants were obtained as follows: Cu >Pb> Cd > Mg for metal -HA complexes respectively, indicating a higher degree of complexation with Cu metal ion. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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