Fractionation and Chemical Characterization of Phosphoric Acid-Extractable Organic Matter in Soils

スポンサーリンク

概要

• 論文の詳細を見る

• Organic matter extracted with orthophosphoric acid (AEOM) from the surface horizons of two soils was fractionated on the basis of adsorbability onto and elutionability from active carbon, precipitation behavior with Ca and Al ions, and adsorbability onto XAD-8 resin and purified by passage over IR-120 resin, distillation under reduced pressure, and dissolution in ethanol. Four fractions were obtained : Ca-unprecipitated and XAD-8-unadsorbed, Ca-unprecipitated and XAD-8-adsorbed, Ca-precipitated and XAD-8-unadsorbed, and Ca-precipitated and XAD-8-adsorbed. The data of E_4/E_6 ratios, IR spectra, and ^<13>C-NMR spectra for the AEOM fractions and humic acids showed that the fractions consisted of a series of lower humic polymers composed of phenolic carboxylic acids with a higher content of methoxyl-C and a lower content of aromatic-C than humic acids. In particular the Ca-unprecipitated and XAD-8-unadsorbed fraction was considered to contain the lowest members of soil humic polymers.

• 一般社団法人日本土壌肥料学会の論文

著者

• Honda C

  Tsukuba International Agricultural Training Centre Japan International Cooperation Agency

• Honda Chikafumi

  Tsukuba Intern. Agric. Training Cent. Jpn. Jntern. Coop. Agcy.

関連論文

• Fractionation of Acid-Extractable Organic Matter in Soils and Chemical Characterization of the Fractions
• Fractionation and Chemical Characterization of Phosphoric Acid-Extractable Organic Matter in Soils

スポンサーリンク