LAYER CHARGE PROPERTIES OF SMECTITES AND VERMICULITES - TETRAHEDRAL VS OCTAHEDRAL

被引：38
|
作者：
MALLA, PB [1 ]
DOUGLAS, LA [1 ]
机构：
[1] RUTGERS STATE UNIV,DEPT SOILS & CROPS,NEW BRUNSWICK,NJ 08903
来源：
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1987年 / 51卷 / 05期
关键词：
GEOLOGY - Stratigraphy - ION EXCHANGE - MINERALOGY - Silicates;
D O I：
10.2136/sssaj1987.03615995005100050048x
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
Total layer charge and charge of octahedral sheets of 2:1 soil clays were estimated by combining alkylammonium ion exchange technique and the Hofmann and Klemen effect. The estimation of charge before and after Hofmann and Klemen effect (Li-saturation and heat treatment) gave the total layer and tetrahedral charge, respectively. The difference of total and tetrahedral charge provided the charge contribution of octahedral sheets, assuming that a complete neutralization of octahedral charge was achieved by Li** plus migration during the heat treatment. As much as 50% of the charge was found to be located in the octahedral sheets in soil smectics and soil vermiculites.
引用
收藏
页码：1362 / 1366
页数：5
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