Formation constants of cu2+ complexes with humic and fulvic acids |
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Authors: | F.J. Stevenson S.A. Krastanov M.S. Ardakani |
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Affiliation: | Department of Agronomy, University of Illinois, Urbana, Ill. U.S.A |
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Abstract: | Formation constants for Cu2+ complexes with humic and fulvic acids were determined by a modification of the well-known Bjerrum potentiometric titration method. Highly stable complexes were formed with formation constants of the order of those observed for synthetic polycarboxylic acids. Overall formation constants for a two-step process (B2) ranged from 2.5 · 10?4 to 7.9 · 10?3. |
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