XAFS Characterization of Copper in Model Aqueous Systems of Humic Acid and Illite D. Hesterberg, D.E. Sayers, W. Zhou, W.P. Robarge et G.M. Plummer J. Phys. IV France, 7 C2 (1997) C2-833-C2-834 DOI: 10.1051/jp4:1997253