红壤对铝、锰离子的吸附特征Ⅱ铝、锰离子的非电性吸附
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EXCHANGE-ADSORPTION CHARACTERISTICS OF ALUMINUM AND MANGANOUsions BY RED SOI LS Ⅱ.NON-ELECTROSTATIC ADSORPTION OF ALUMINUM AND MANGANOUsions
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    摘要:

    对铝、锰离子的非电性吸附进行了Freundlish方程处理,结果表明:砖红壤中的吸附较红壤明显,低浓度时,锰离子的非电性吸附较铝离子为弱,高浓度时则反之;对于土壤的离子交换吸附,似不可能获得稳定的平衡常数k;K表征离子的吸附强度,以膨润土中者最大,1/n是吸附量与溶液浓度的相关率,K1/n成反相关.砖红壤中的ΔGo最大,铝、钾离子交换的ΔGo大于铝、钙离子交换者.非电性吸附量及与其有关的k、K、1/n和ΔGo既受固相表面性质的影响,也制约于离子的本性.

    Abstract:

    Exchang-eadsorption of aluminum and manganousions by red soils continued being studied.It was shown that the nonelectrical adsorption of aluminum and manganousions was related to either adsorption capacity of solid phase or adsorption intensity of ion;For the ion exchange reaction in soils,it seemed impossible to obtain equilibrium constant k;K and 1/n were also not fixed values;The change in standard free energy ΔGo of exchange-adsorption between aluminum and potasium was greater than that between it and calcium,it was also the greatest in laterite system.Changes in k,K,1/n and ΔGo were affected both by the property of solid phase surface and by the nature of ion itself.

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丁昌璞,潘映华.红壤对铝、锰离子的吸附特征Ⅱ铝、锰离子的非电性吸附[J].土壤学报,2003,40(4):562-566. DOI:10.11766/trxb200111010412 Ding Chang-pu, Pan Ying-hua. EXCHANGE-ADSORPTION CHARACTERISTICS OF ALUMINUM AND MANGANOUsions BY RED SOI LS Ⅱ. NON-ELECTROSTATIC ADSORPTION OF ALUMINUM AND MANGANOUsions[J]. Acta Pedologica Sinica,2003,40(4):562-566.

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历史
  • 收稿日期:2001-11-01
  • 最后修改日期:2002-02-24
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  • 在线发布日期: 2013-02-25
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