The potentiometric measurement of stability constants of soil polycar boxy late-Cu2+ chelates
| Autor: | D. J. Lineman, Scott D. Young, B. W. Bache |
|---|---|
| Rok vydání: | 1982 |
| Předmět: |
chemistry.chemical_classification
Potentiometric titration Analytical chemistry chemistry.chemical_element Polymer Stability (probability) Copper Ion selective electrode chemistry Stability constants of complexes General Earth and Planetary Sciences Organic matter Chelation General Agricultural and Biological Sciences General Environmental Science |
| Zdroj: | Journal of Soil Science. 33:467-475 |
| ISSN: | 0022-4588 |
| DOI: | 10.1111/j.1365-2389.1982.tb01781.x |
| Popis: | Summary Stability constants describing Cu2+ combination with three natural and one synthetic polycarboxylates were calculated from pH measurements alone, and using a Cu2+ ion selective electrode. Good agreement between the two methods justified the theory for polymer-cation association. The results were consistent with the formation of a single complex CuL2 over a fairly wide range of metal-ligand (L) ratios. The stability constant (βHCu) that was independent of polymer charge allowed the prediction of copper speciation in soil solution as a function of pH and soluble organic matter. |
| Databáze: | OpenAIRE |
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