Relationship Between 2:1 Mineral Structure and the Fixation and Release of Cations  

作　　者：FENG KE, WANG XIAOLI, WANG XIAOZHI and TANG YANAgricultural College, Yangzhou University, Yangzhou 225009 (China) 

出　　处：《Pedosphere》2003年第1期81-86,共6页土壤圈（英文版）

基　　金：Project(No.39770427)supported by the National Natural Science Foundation of China.

摘　　要：The effects of different structures of 2:1 layer minerals, layer charge location, and changes of structure and charge during the weathering process on the fixation and release of interlayer cations are reviewed. It could be concluded that the fixation capacity is determined by the total amount of interlayer charge originating from both octahedral and tetrahedral sheets. The relationship between interlayer cation fixation and octahedral structure of the secondary minerals may be different from that of the primary minerals. The oxidation and reduction of cations with variable valence can greatly influence the cation-fixation capacity.The effects of different structures of 2:1 layer minerals, layer chargelocation, and changes of structure and charge during the weathering process on the fixation andrelease of interlayer cations are reviewed. It could be concluded that the fixation capacity isdetermined by the total amount of interlayer charge originating from both octahedral and tetrahedralsheets. The relationship between interlayer cation fixation and octahedral structure of thesecondary minerals may be different from that of the primary minerals. The oxidation and reductionof cations with variable valence can greatly influence the cation-fixation capacity.

关 键 词：cation fixation interlayer charge mineral structure 

分 类 号：P574[天文地球—矿物学]