This book focuses on the important binding properties of these compounds which regulate the chemical reactivity and bioavailability of hydrogen and metal ions in the natural environment. Topics covered include the physico-chemical properties of humic matter and interactions of protons and metal cations with weak acids and macromolecules. Experimental laboratory methods are also discussed, together with mathematical modelling. Finally the author looks at how the results of this research can be used to interpret environmental phenomena in soils, waters and sediments.
About the Author
Edward Tipping works at the Natural Environment Research Council Centre for Ecology and Hydrology in Cumbria, England, and is a Visiting Professor at the University of Lancaster. After receiving his PhD from the University of Manchester in 1973, he spent five years at the Middlesex Hospital Medical School researching cancer biochemistry. He has spent short periods in laboratories in Finland, Sweden, the USA, Norway and the Netherlands, and published over 120 papers in international journals.
Table of Contents1. Introduction; 2. Humic substances - a brief review; 3. Environmental solution and surface chemistry; 4. Proton dissociation from weak acids; 5. Metal-ligand interactions; 6. Methods for measuring cation binding by humic substances; 7. Quantitative results with isolated humic substances; 8. Cation binding sites in humic substances; 9. Parameterised models of cation-humic interactions; 10. Applications of comprehensive parameterised models; 11. Predictive modelling; 12. Cation-humic binding and other physico-chemical processes; 13. Cation binding by humic substances in natural waters; 14. Cation binding by humic substances in soils and sediments; 15. Research needs.