矿物结构与层间阳离子的固定与释放  

EFFECT OF MINERAL STRUCTURE ON FIXATION AND RELEASE OF INTERLAYER CATIONS

作　　者：封克[1] 汤炎[1] 殷士学[1] 

机构地区：[1]扬州大学农学院农学系,扬州225009

出　　处：《扬州大学学报（自然科学版）》1999年第3期36-40,共5页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金!资助项目 3 9770 4 2 7

摘　　要：分析2∶1型矿物的结构差异、层间电荷性质以及在风化过程中某些性质的变化对层间阳离子吸引力的影响,对已有报道中一些矛盾的结果或不具普遍意义的结论进行了讨论.得出几个较为明确的结论:层间总电荷与四面体电荷所占比例大小共同决定矿物对层间阳离子的固定能力;原生矿物中八面体结构与层间阳离子固定间的关系对次生矿物而言,也许并不一致;八面体中可变价阳离子的氧化还原。This paper, by analyzing the effect of differences of mineral structure of 2∶1 layer minerals, the properties of their interlayer charge and changes of some properties caused by weathering on the attractive force for interlayer cation, reached the conclusion that: ① The fixation capacity is determined by the ratio of the total amount of interlayer charge and that of tetrahedral charges. ② The relationship of interlayer cation fixation and octahedral structure of secondary minerals is probably different from that of primary minerals. ③ The oxidation and reduction of variable valence cations can greatly influence the cation fixation capacity.

关 键 词：阳离子固定 矿物结构 层间电荷 土壤 风化 

分 类 号：S152.1[农业科学—土壤学]