C. M. Marquardt
The present report summarises the progress and the final results obtained within the BMWA -Project “Investigations on the complexation behaviour of humic acids and their influ-ence on the migration of radioactive and non-radioactive substances under conditions close to nature”. This project, which lasted for 3.5 years, was conducted in the frame of a BMWA supporting program directed towards the assessment of final repositories / underground dis-posal facilities in deep geological formations. The work presented in this report is a continua-tion of the work within a former BMBF project performed in the years 1995 to 1999. These results are published in a Scientific Report of the Forschungszentrum Karlsruhe.
Five partners have been concerned in this project; four of them have received funding and one partner (FZK) have attended the project with its long experiences in the field of metal ion interaction with humic substances, but without financial support. All the partners are listed on page i.
The report contains an executive summary of the final reports prepared by the four financially supported partners. These final reports are enclosed as Appendices A – D. The executive summary gives an overview of the covered topics and the obtained results without going into details. Especially, the relationships among the different studies are pointed out.
By this approach, results rapidly become available in compact form prior to their publication in various scientific journals and conference proceedings. Furthermore, some of the prelimi-nary results may not appear in scientific journals or conference proceedings.
The elaborated results are important contributions which can be introduced into safety as-sessment of nuclear and toxic waste disposal in deep geologic formations.
The following abbreviations are used in the text for each partner:
• Forschungszentrum Rossendorf e.V., Institut für Radiochemie FZR
• Universität Mainz, Institut für Kernchemie UMz
• Universität des Saarlandes, Institut für Anorganische Chemie und Radiochemie USa
• Institut für Interdisziplinäre Isotopenforschung e.V., Leipzig IIF
• Forschungszentrum Karlsruhe GmbH, Institut für Nukleare Entsorgung FZK