NONEXCHANGEABLE POTASSIUM ASSOCIATED WITH HYDROXY-INTERLAYERED VERMICULITE FROM COASTAL-PLAIN SOILS

被引：23

作者：

HARRIS, WG ^{[1
]}

HOLLIEN, KA ^{[1
]}

YUAN, TL ^{[1
]}

BATES, SR ^{[1
]}

ACREE, WA ^{[1
]}

机构：

[1] UNIV FLORIDA,DEPT MAT ENGN,GAINESVILLE,FL 32611

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1988年 / 52卷 / 05期

关键词：

Potassium Compounds--Chemical Reactions - Soils--Analysis;

D O I：

10.2136/sssaj1988.03615995005200050053x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Hydroxy-interlayered vermiculite (HIV) from a Quartzipsamment, a Haplaquod, and a Paleudult from Florida was studied to determine levels of nonexchangeable K associated with this mineral. Results confirmed that most phyllosilicate grains from quartz- and HIV-dominted silt fractions of all samples contained sufficient K to be detected in K x-ray dot images, though little or no mica was detectable by x-ray diffractometry (XRD). High K2O values, mica-like grain morphology, and relatively large size of these grains suggest that they are transformation products of mica. Acid extracts from the clay also contained detectable levels of K. Nonexchangeable K may reside within grains as small occluded mica zones with insufficient periodicity for XRD detection, or could be retained in the 1.4-nm structure.

引用

页码：1486 / 1492

页数：7

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SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1987, 51 (02) :481-484

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