Synthetic Humic Acids for Basic Studies of Humic Acid Complexation Properties and Migration Processes

In order to improve the knowledge about the interaction processes between humic acids and metal ions, e.g., actinide ions, various humic acid model substances with different functional properties were developed at the Institute of Radiochemistry. These includes synthetic humic acids with different functional group contents and various structural elements, chemically modified humic acids, humic acids with pronounced redox functionalities, and isotopically labeled humic acids. The presentation gives an overview about the synthesis, characterization and application of the different types of designed humic acid model substances.