DISSOLUTION OF ALLOPHANE BY ACID OXALATE SOLUTION
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概要
- 論文の詳細を見る
Dissolution by acid oxalate solution was investigated as a means of determination and removal of allophane and iron and aluminium oxides in clays. Allophane and amorphous oxides of iron and aluminium were selectively dissolved in 0.15M acid oxalate solution of pH 3.5 by shaking for 1 hour at 30℃ or 3 hours at 20℃, provided the ratio of sample weight to solution volume was 100mg to 200ml. Dissolved silica was determined directly by a heteropoly blue method and aluminium and iron were determined as ferron complexes after removal of the oxalate by H_2SO_4-HNO_3 treatment. Crystalline clay minerals such as kaolinite, halloysite, metahalloysite, montmorillonite, gibbsite, hematite and goethite were hardly dissolved by the same procedure.
- 日本粘土学会の論文
著者
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Higashi Toshio
Faculty Of Agriculture Yamaguchi University.
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Higashi Toshio
Faculty Of Agriculture Kyushu University
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IKEDA HIROSHI
Faculty of Agriculture, Yamaguchi University.
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Ikeda Hiroshi
Faculty Of Agriculture Yamaguchi University.
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