ISOLATION AND CHARACTERIZATION OF NATURALLY OCCURRING ORGANO-MINERAL COMPLEXES IN SOME VOLCANIC ASH SOILS

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概要

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• Naturally occurring organo-mineral complex particles were separated from seven samples of volcanic ash soils after SATOH et al. (1972a, b). They were then divided into three kinds of complex particles (blackish silt-sized, brownish silt-sized, and clay-sized particles).The organic matter in the blackish complex fractions showed a higher exothermic reaction at about 390-460℃, the clay complex fractions, a lower exothermic reaction at about 300℃, and the brownish complex fractions, both reactions. These exothermic reactions resembled in thermal nature of humic substances combined with inorganic materials such as Al- and Fe-ions. The soil samples from A horizons showed both the lower and higher exothermic reactions but those from B horizons showed only the lower one.

• 社団法人日本土壌肥料学会の論文

著者

• Satoh Tsutomu

  Institute For Agricultural Research Tohoku University

関連論文

• ISOLATION AND CHARACTERIZATION OF NATURALLY OCCURRING ORGANO-MINERAL COMPLEXES IN SOME VOLCANIC ASH SOILS
• EFFECT OF IRON ON THE EXOTHERMIC PEAK TEMPERATURE OF ALLOPHANE FROM A MISOTSUCHI WEATHERED PUMICE BED
• ORGANO-MINERAL COMPLEX STATUS IN SOILS : I. Thermal Analytical Characteristics of Humus in the Soils

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