红壤对铝锰离子的吸附特征 Ⅲ.铝锰离子对的交换吸附  

EXCHANGE-ADSORPTION CHARACTERISTICS OF ALUMINIUM AND MANGANOUS IONS BY RED SOILS Ⅲ. EXCHANGE-ADSORPTION BETWEEN ALUMINIUM AND MANGANOUS ION

作　　者：丁昌璞[1] 潘映华[1] 

机构地区：[1]中国科学院南京土壤研究所,南京210008

出　　处：《土壤学报》2004年第2期259-264,共6页Acta Pedologica Sinica

摘　　要：对具有水解性质的铝、锰离子对交换吸附研究的结果是 ,两种离子既表现了离子交换的一般化学行为 ,又有明显的非等当量交换和非电性吸附的特征 ;非等当量交换和非电性吸附受制于固相的表面性质、离子对的相对交换能力和离子的加入量 ;对非电性吸附的有关参数k、K、1/n、r和ΔF进行了表述 ;根据铝离子交换锰离子的ΔF 。The results on exchange adsorption between aluminium and manganous ion in red soils were shown:These two ions expressed both chemical behaviours according to the universal rules of ion exchange and quite distinct characteristics of nonequivalent exchange. Nonequivalent exchange and its nonelectrical adsorption between aluminium and manganous ion resulted from their hydrolysis nature,which were influenced by property of solid surface,relative exchange power of ion pair and ion amount added. The parameters concerned k, r, 1/n, K and Δ F were also explained. In view of Δ F ,the processes which were spontaneous and irreversible towards stable state for exchange of manganous ion by aluminiun and adsorption of aluminium by red soil were demonstrated in thermodynamics.

关 键 词：红壤 铝离子 锰离子 非等当量交换 非电性吸附 水解性质 热力学 自发过程 

分 类 号：S153.3[农业科学—土壤学]