A Novel Approach to Metal-Humic Complexation Studies by Lanthanide Ion Probe Spectroscopy
- 1 September 1989
- journal article
- research article
- Published by Taylor & Francis in International Journal of Environmental Analytical Chemistry
- Vol. 37 (1) , 1-17
- https://doi.org/10.1080/03067318908026880
Abstract
Naturally occurring humic substances are known to be potentially strong binders of metals in the environment. A sensitive spectroscopic technique, based on the unique luminescence properties of the tripositive lanthanide metal ions, has been developed to selectively probe metal binding sites in humic substances. A continuous, multiligand pH dependent ligand model is proposed to describe complexation of metals with humic materials in terms of mean binding strengths, distributions, and concentrations.Keywords
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