1. Chemistry Department Panjab University Chandigarh 160014 India
2. Analytical Chemistry Division Bhabha Atomic Research Centre Mumbai 400085 India
3. Aachen University of Applied Sciences Heinrich‐Mussmann‐Str. 1 D‐52428 Juelich Germany
4. Biological and Ecological Engineering Oregon State University Corvallis OR 97331 USA
5. Hochschule Mannheim University of Applied Sciences Institute of Physical Chemistry and Radiochemistry Paul‐Wittsack‐Str. 10 D‐68163 Mannheim Germany
6. Institute of Geosystems and Bioindication Technical University of Braunschweig Langer Kamp 19c D‐38106 Braunschweig Germany
7. UNESCO Global Geopark Harz. Braunschweiger Land Ostfalen Network Grummetwiese 16 D‐38640 Goslar Germany
8. Department of Life Sciences Technical University of Braunschweig Pockelsstr. 14 D‐38106 Braunschweig Germany