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Simultaneous Mineralogical Quantification and Chemical Characterization of Soil Clays
Chemistry Illite Mass-balance Protoillite Quantify Smectite
2011/12/29
A new chemical mass balance technique has been developed for simultaneous mineralogical quantification and chemical characterization of soil clays. The procedure includes separation of the whole clay ...
Adsorption of Water Vapor by Soils: Investigations of the Influence of Organic Matter, Iron, and Aluminum on Energetic Heterogeneity of Soil Clays
Soil constituents Surface heterogeneity Water adsorption
2011/12/29
Water vapor adsorption isotherms were measured for samples of loessial soil clays modified by removing organic matter and Fe and Al compounds. The isotherms were analyzed by the exponential adsorption...
Morphology, Texture, and Microstructure of Halloysitic Soil Clays as Related to Weathering and Exchangeable Cation
Exchangeable cation Halloysite Interstratification Microstructure Smectite TEM
2011/12/31
This paper aims at characterizing the morphology, texture, and microstructure of three hydrated kaolin rich clays (f < 0.2 µm) from volcanic soils. These clays represent a weathering sequence in...
Amorphous and Crystalline Titanium and Iron-Titanium Oxides in Synthetic Preparations, at near Ambient Conditions, and in Soil Clays
Anatase Goethite Hematite Iron Pseudorutile Synthesis Titanium
2012/2/10
A series of mixed iron and titanium oxide coprecipitates ranging in composition between 0 < Ti/Ti + Fe < 1 was synthesized and aged under varying conditions of pH, temperature and time in order to est...
Properties and Quantitative Estimation of Poorly Crystalline Components in Sesquioxidic Soil Clays
Quantitative Estimation Poorly Crystalline Components Sesquioxidic soil clays
2012/2/13
Sesquioxidic soil clays from Oxisols in South Africa, Australia and Brazil, and two clays from Andosols in Japan and New Zealand, were investigated by selective dissolution techniques. Acid ammonium o...