Erica Donner¹, Peter Kopittke², Martin de Jonge³, Chris G. Ryan⁴, David Paterson³, Ravendra Naidu⁵ and Enzo Lombi¹, (1)Centre for Environmental Risk Assessment and Remediation (CERAR), University of South Australia, Mawson Lakes, Australia, (2)SLCAFS, The University of Queensland, Queensland, Australia, (3)X-ray Fluorescence Microscopy, Australian Synchrotron, Melbourne, Australia, (4)CSIRO, Melbourne, Australia, (5)Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), University of South Australia, Adelaide, Australia