Contemporary Aspects of Soil Eco-Chemistry and Geochemistry in Bulgaria

The paper focuses on the main aspects of contemporary soil eco-chemistry in Bulgaria. The issues tackled refer to: (i) analysis of chemical species, including contaminants; (ii) prediction of metal bioavailability and exposure to plants of chemical species in soil. A stress is made on pilot studies concerning organic geochmical markers, their analysis and quantification in soils (Fluvisols, Vertisols, Luvisols, Arenosols). A new aspect of soil eco-chemistry is related with analysis of compounds in water-soluble dissolved organic carbon in soil as molecular indicators of environmental change.