阳离子交换容量
有机质
淤泥
土壤水分
粘土矿物
土壤科学
化学
矿物学
土壤有机质
比表面积
环境化学
环境科学
地质学
古生物学
生物化学
有机化学
催化作用
作者
D. Curtin,G. W. Smillie
标识
DOI:10.2136/sssaj1976.03615995004000030041x
摘要
Abstract Cation exchange capacities of Irish soils developed from a wide range of parent materials were found to be highly correlated with organic matter content and specific surface but not with clay content. Multiple regression analysis showed that organic matter in combination with specific surface accounted for 97% of the variation in CEC whereas organic matter and clay content only accounted for 58% of the variation. The better correlation between CEC and specific surface than between CEC and clay content, is attributed to the ability of surface area measurements to reflect the presence of phyllosilicates in silt and sand fractions of soils and to the fact that these minerals have less variable surface charge densities than cation exchange capacities. It is proposed that specific surface provides a better estimate than clay content, of the mineral component of CEC for soils of varying mineralogy.
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