| 可变电荷土壤对SO42-的吸附 |
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| 引用本文： | 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 |
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| 作者姓名： | 章钢娅 张效年 于天仁 |
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| 作者单位： | 中国科学院南京土壤研究所;中国科学院南京土壤研究所;中国科学院南京土壤研究所 |
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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.
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ADSORPTION OF SULFATE BY VARIABLE CHARGE SOILS |
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| Zhang Gangy,Zhang Xiaonian and Yu Tianren. ADSORPTION OF SULFATE BY VARIABLE CHARGE SOILS[J]. Acta Pedologica Sinica, 1987, 24(1): 14-17 |
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| Authors: | Zhang Gangy Zhang Xiaonian Yu Tianren |
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| Affiliation: | Institute of Soil Science, Academic Sinica, Nanjing;Institute of Soil Science, Academic Sinica, Nanjing;Institute of Soil Science, Academic Sinica, Nanjing |
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| 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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