可变电荷土壤对SO42-的吸附
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ADSORPTION OF SULFATE BY VARIABLE CHARGE SOILS
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    摘要:

    本文研究了三种带可变电荷的红壤在恒定pH和Cl-离子存在条件下对SO42-的吸附.三种红壤的OH-释放量分别仅占SO42-吸附量的12%,14%和20%.砖红壤在pH5.0时的电荷变化占所吸附的SO42-的64-82%.作者认为大部分SO42-以置换水合基的方式被吸附.

    Abstract:

    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.

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  • 在线发布日期: 2013-02-25
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