Abstract
The influence of vegetational background on binding of selected heavy metals in humus was examined. For this purpose samples of terrestrial humus from surface soil layers with different vegetational background, such as spruce, pine and oak forests, and different types of mires were studied with respect to differences in binding of Cd, Cu, Pb and Zn. The metal binding capacity was examined at different pH using batch extractions. The results indicated that vegetational background influences the binding of metals in organic soil significantly. Drying and storage of the soil samples appeared not to affect the metal binding capacity of the soils. Neither did heating of the samples at 100 °C or incubation at constant temperature and moisture affect the binding significantly, indicating that any fungi or soil microorganisms present did not appreciably affect the metal binding in these soils.
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