Comparison of the Composition of Humic and Fulvic Acids Prepared by the IHSS Method and NAGOYA Method
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概要
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The composition of humic acids (HAs) and fulvic acids (FAs) prepared by the NAGOYA (Nagoya University) method and the IHSS ( International Humic Substances Society) method was investigated using an ando soil and a brown forest soil. Extraction with a smaller volume of 0.1 N NaOH in the IHSS method yielded HAs containing larger amounts of O, carboxyl groups, alcoholic hydroxyl groups, hexoses, and uronic acids than those prepared by the NAGOYA method. The contents of C, carbonyl groups, and amino acids were higher in the HAs obtained by the NAGOYA method. The relative content of aromatic C was higher in the HAs prepared by the NAGOYA method, especially in the ando soil. The FAs prepared by the IHSS method contained smaller amounts of H, N, alcoholic hydroxyl groups, saccharides, and amino acids than the FAs obtained by the NAGOYA method, mainly due to the XAD-8 treatment in the IHSS method. The saccharide and amino acid contents in the XAD-8-adsorbed fractions obtained from the FAs prepared by the NAGOYA method using a larger volume of resin, were higher than those in the FAs prepared by the IHSS method. It was concluded that humic substances combined with smaller amounts of non-humic substances were selectively obtained as FAs in the IHSS method.
- 社団法人日本土壌肥料学会の論文
著者
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Watanabe A
Nagoya Univ. Nagoya Jpn
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Watanabe Akira
Laboratory of Soil Biology and Chemistry, Graduate School of Bioagricultural Sciences, Nagoya Univer
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井藤 和人
Faculty of Life and Environmental Science, Shimane University
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KUWATSUKA Shozo
Laboratory of Soil Science, School of Agriculture, Nagoya University
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Kuwatsuka S
Graduate School Of Bioagricultural Sciences Nagoya University
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Kuwatsuka Shozo
Laboratory Of Soil Science Faculty Of Agriculture Nagoya University
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Itoh K
Faculty Of Life And Environmental Science Shimane University
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Itoh Kazuhito
Fac. Life Env. Sci. Shimane Univ.
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Ardjasa W
Research And Assessment Installation For Agriculture Technology
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Itoh Kazuhito
Laboratorv of Soil Biology and Chemistry, School of Agricultural Sciences, Nagoya University
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Arai Shigemitsu
Laboratorv of Soil Biology and Chemistry, School of Agricultural Sciences, Nagoya University
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Arai Shigemitsu
Laboratorv Of Soil Biology And Chemistry School Of Agricultural Sciences Nagoya University
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Watanabe A
Research Division For Development Of Anti-infection Agents Institute Of Development Aging And Cancer
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Watanabe Akira
Laboratory Of Radiation Biology Faculty Of Science University Of Tokyo:(present) Research Institute
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Watanabe Akira
Laboratory Of Bioindustrial Genomics Graduate School Of Agricultural Science Tohoku University
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Watanabe Akira
Laboratory Of Bioindustrial Cenomics Graduate School Of Agricultural Science Tohoku University
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