Uranium in Different Samples from Eastern Macedonia – A Case Study

Content of uranium in the Sasa tailings dam material varies from 1.8 to 5.5 mg kg-1. Sasa tailings dam failure cause discharge of material in the Lake Kalimanci. The uranium content in surficial lake sediments in years, before the tailings dam failure varied from 2.4 to 5.4 mg kg-1 and after the failure from 3.6 to 10.4 mg kg-1. Meanwhile Lake Kalimanci water contains lower concentrations of uranium (0.9-1.1 μg ml-1). Water from Lake Kalimanci is being used for irrigation of the nearby Kochani valley, where the uranium content in soils varies from 73 to 182 mg kg-1.