摘要
红土是母岩经历不同程度的红土化作用形成的 .不同地区、不同母岩、不同气候条件形成的不同类型红土 ,其主要化学成分之间存在统计规律 .研究结果表明 :红土的化学成分都是以SiO2 ,Fe2 O3和Al2 O3为主 ,随着SiO2 含量的减小 ,Fe2 O3,Al2 O3和R2 O3的含量增大 ;而红土的pH值、烧失量随着R2 O3含量的增大而增大 ;归一化的SiO2 与倍半氧化物R2 O3关系不论是以含量计算或分子量计算 ,都存在二项式的分布规律 .红土的化学成分实质上是红土化作用结果的反映 .
Laterite is formed from the original rocks throngh different degrees of laterization. The chemical compositions of laterite follows the statistic laws in different areas, different original rocks, different climate conditions,and different types. Research result shows: the relationship between the SiO_2,Fe_2O_3,Al_2O_3 of laterite is not notable, but the relationship between the SiO_2 and R_2O_3 follows the laws in either the content calculation or the molecular weight calculation. In addition, the compositions of laterite and R_2O_3 have the change tendency, for example, the pH values, the burning quantity, the cation exchange capacity and the content of free oxides etc.. The chemical compositions of laterite are actually the reflection of laterization results.
出处
《昆明理工大学学报（理工版）》
2002年第4期63-66,70,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 (项目编号 :5 996 80 0 2 )
云南省科委应用基础研究基金资助项目 (项目编号 :97E0 48M)
关键词
红土
化学成分
归一性
变化规律
laterite
chemical composition
normalization
change law
