Field scale behaviour of cadmium in soil

Although total heavy metal contents of soil are often used to express the degree of contamination, they are of little value to judge environmental effects. The main objective of this thesis was to develop and test methodologies with which environmental risks of cadmium pollution of field soils can be evaluated. A method to determine the mobile and bioavailable fraction of the total Cd content may be soil extraction with 0.01 M CaCl 2 . Chemical processes that control the cadmium activity in such an extract were quantified. This is relevant information when Cd contents in CaCl 2 -extracts need... Mehr ...