Adsorption of sulfate by three red soils carrying variable amounts of electrical charge at constant pH in the pretence of Cl- ions was studied.The hydroxyl ions released from Red earth,lateritic red earth and latosol accounted for only 12%,14% and 20% of the amounts of sulfate adsorbed by the three soils respectively.For a latosol at pH 5.0,the change in electrical charge accounted for 64-82% of the adsorbed sulfate.It is suggested that most of the sulfate was adsorbed through the displacement of coordinated water molecules in the surface of soil particals.
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章钢娅,张效年,于天仁.可变电荷土壤对SO42-的吸附[J].土壤学报,1987,24(1):14-17. Zhang Gangya, Zhang Xiaonian, Yu Tianren. ADSORPTION OF SULFATE BY VARIABLE CHARGE SOILS[J]. Acta Pedologica Sinica,1987,24(1):14-17.