Beng Umali¹, Danielle P. Oliver², Sean Forrester², Bertram F. Ostendorf¹, David J. Chittleborough¹, John Hutson³ and Rai Kookana⁴, (1)School of Earth and Environmental Sciences, University of Adelaide, Urrbrae, Australia, (2)Land and Water, CSIRO, Urrbrae, Australia, (3)Flinders University, Adelaide, SA, AUSTRALIA, (4)CSIRO, Glen Osmond, SA, AUSTRALIA