An experiment on the characteristics of Co, Cu, Pb and Zn adsorption by seven highly weathered acid soils derived from different parent materials in different areas of southern China was conducted to study affinity characteristics and factors affecting affinity as well as the mechanism of adsorption reaction by using shapes of adsorption curve, pH values and competitive adsorption equations and distribution coeffieients. Clay fractions(< 11tm) separated from red soils with different properties were allowed to react with solutions of Co, Cu, Pb and Zn in 25 ml 0.05 mol/L Ca(NO3)2 as supporting electrolyte containing the desired amount of adsorbate ion, respectively. The pH values of suspention were adjusted by adding appropriate amounts of 0.1 mol/L N03 or saturated Ca(OH)2 solution prior to metal addition to obtain a series of suspentions with various pH values.
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王维君,邵宗臣,何群.红壤粘粒对Co、Cu、Pb和Zn吸附亲和力的研究[J].土壤学报,1995,32(2):167-178. Wang Weijun, Shao Zongchen, He Qun. STUDY ON ADDORPTION AFFINITIES OF Co, Cu, Pb AND Zn FOR DIFFERENT RED SOIL CLAYS[J]. Acta Pedologica Sinica,1995,32(2):167-178.