木節粘土中の腐植酸の官能基の定量

概要

論文の詳細を見る
Spectroscopic and elemental analyses were carried out for humic acids involved in three kinds of kibushi-clays (Motoyama-, Hara-, and lga-kibushi) and in ball clay (China). The functional groups in the humic acids were also analyzed quantitatively by extracting the humic acids from the clays according to the method of the International Humic' Substance Society (IHSS). Humic acids from Motoyama- and Hara-kibushi were classified into B-type and those from Iga-kibushi and ball clay into A-type on the basis of the absorbance analysis. The humic acid in Motoyama-kibushi, that is used favorably to china, was abundant in carboxyl group and less abundant in both alcoholic OH and carbonyl groups, as compared to the other kibushi-clays. In ball clay, the amount of carboxyl group was much larger and that of alcoholic OH much smaller. Although. the property with respect to the amounts of carboxyl and alcoholic OH groups suggests that ball clay is favorable for a china resource, the degree of humification is too high to use as a china resource.
日本粘土学会の論文
1989-11-25