Media type: E-Article Title: Studies of the nature of Cu2+ and Pb2+ binding sites in soil humic substances using X-ray absorption spectroscopy Contributor: Xia, Kang; Bleam, William; Helmke, Philip A. imprint: Elsevier BV, 1997 Published in: Geochimica et Cosmochimica Acta Language: English DOI: 10.1016/s0016-7037(97)00079-3 ISSN: 0016-7037 Keywords: Geochemistry and Petrology Origination: Footnote: