MacCarthy, PatrickZhang, Zhonghua2023-07-112023-07-111993https://hdl.handle.net/11124/177182Includes bibliographical references (pages 223-241).doctoral dissertationsengCopyright of the original work is retained by the author.Soils -- Humic acid contentSoils -- Trace element contentIon exchangeLigandsApplication of Schubert's ion-exchange method to multiple-ligand and multiple-metal mixture systems, TheText