Comparison of Two Methods of Preparation of Humic and Fulvic Acids, IHSS Method and NAGOYA Method
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概要
- 論文の詳細を見る
Two methods for preparing soil humus samples, NAGOYA (Nagoya University) method and IHSS (International Humic Substances Society) method, were compared using A-horizons of an acid brown forest soil and an ando soil. ALkali-extractable humus was recovered more effectively by the NAGOYA method, while the IHSS method recovered only 80 and 26% of the maximum yield by extraction with 0.1 N NaOH from both soils, respectively. The recoveries of fulvic acids (FAs) by the IHSS method in which XAD-8 was used as absorbent to obtain only humic substances in the FA fraction from the brown forest soil and the ando soil were only 1/5 and 1/40, respectively, of those by the NAGOYA method in which the whole FA fraction was recovered. The FAs obtained by the NAGOYA method were further fractionated into adsorbed and non-adsorbed fractions with XAD-8-adsorbed fraction increased 3.8 and 26 times by changing the volumes of the extractant and adsorbent. Fractionation using PVP resulted in a high recovery and more distinct fractionation of FAs into humic substances and non-humic substances compared with XAD-8.
- 社団法人日本土壌肥料学会の論文
著者
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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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