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

页码：1362 / 1366

页数：5

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