Effects of drying on the ion exchange capacity and cation adsorption properties of some New Zealand soils
作者:
I.R. Phillips,
A.S. Black,
K.C. Cameron,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1986)
卷期:
Volume 17,
issue 11
页码: 1243-1256
ISSN:0010-3624
年代: 1986
DOI:10.1080/00103628609367786
出版商: Taylor & Francis Group
关键词: CEC;AEC;K and Mg adsorption isotherms;organic matter;surface area;pH;K fixation
数据来源: Taylor
摘要:
The effect of drying on the cation (CEC) and anion (AEC) exchange capacity, and on potassium (K) and magnesium (Mg) adsorption by three New Zealand soils was investigated. Air‐drying resulted in no significant changes in these properties compared with the field‐moist samples. Oven‐drying at 105°C significantly decreased the CEC and increased the AEC of most soils compared with air‐dried samples. The decrease in CEC was related to increased solubility of organic matter and a decrease in surface area on which charge could be developed. The increase in AEC was attributed to a decrease in soil pH.
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