1. Technical University of DenmarkDepartment of Environmental Engineering Miljøvej, Building 113 2800 Kgs. Lyngby Denmark
2. Aarhus UniversityDepartment of Geoscience C.F. Møllers Alle 4 8000 Århus C Denmark
3. University of ZambiaSchool of MinesIntegrated Water Resources Management Centre Great East Road Campus P.O. Box 32379 Lusaka Zambia
4. University of ZambiaSchool of MinesDepartment of Geology Great East Road Campus P.O. Box 32379 Lusaka Zambia
5. Geological Survey of Denmark and Greenland (GEUS) Geochemistry, Øster Volgade 10 1350 København K Denmark