KINETICS OF SIMAZINE SORPTION ON SOILS AND SOIL PARTICLE SIZE FRACTIONS

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概要

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• Sorption behavior of simazine in whole soils and four selected soil particle size fractions of two Hiroshima soils, a loam and a decomposed granitic (DG) soil, was measured during two-step sorption experiments. In the first sorption step, adsorption kinetics were followed for 36 hours in initially simazine-free soil samples. A rapid adsorption was observed for all soil particle size fractions after 10 minutes. Between 10 minutes and 36 hours adsorption slowly progressed in all loam size fractions while adsorption stopped in all DG size fractions. In the second sorption step, 70% of the solution in the soil samples was substituted with simazine-free solution and sorption behavior was followed for an additional 36 hours. A rapid desorption took place in all soil samples during the first 10 minutes, followed by a slow adsorption in the loam size fractions and no apparent adsorption or desorption in the DG size fractions. The amount of simazine rapidly adsorbed (step I) and desorbed (step II) was best correlated with the soil specific surface area for the low-organic DG size fractions and with soil organic matter content for the loam size fractions. For both sorption steps I and II, the adsorption kinetics in the loam size fractions were well described by a modified Freundlich type equation. Adsorption kinetics during step II were dependent on both the soil organic matter content and the total amount of simazine adsorbed during step I, likely due to diffusion-controlled sorption of simazine on the soil organic matter.

• 社団法人地盤工学会の論文
• 1999-08-15

著者

• Jonge L.w.de

  Danish Institute Of Agricultural Sciences Dept. Of Soil Science Research Centre Foulum P. O. Box 50

• 福島 武彦

  Dept. of Integrative Environ Sci., Graduate School of Life and Environ. Sci., Tsukuba Univ.

• 山口 登志子

  Dept. of Civil and Environmental Engineering, Faculty of Engineering, Hiroshima University

• 福島 武彦

  広島大学大学院工学研究科

• Moldrup P.

  Environmental Engineering Laboratory Dept. Of Civil Engineering Aalborg University Sohngaardsholmsve

• FARCASANU R.I.

  Dept. of Civil and Environmental Engineering, Faculty of Engineering, Hiroshima University, 1-4-1 Ka

• Farcasanu R.i.

  Dept. Of Civil And Environmental Engineering Faculty Of Engineering Hiroshima University 1-4-1 Kagam

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• SOIL CONSTITUENT FACILITATED TRANSPORT OF PHOSPHORUS FROM A HIGH-P SURFACE SOIL
• 降雨による表層土壌カラムからのコロイド粒子と溶存有機物の流出特性
• 底質データベースとその統計解析
• TEST OF HPLC MICRO-COLUMN METHOD FOR DIRECT MEASUREMENT OF PESTICIDE RETARDATION IN SOILS
• 廃棄物埋立地層内における重金属の溶出性の評価
• 下水汚泥の有効利用に関するLCA
• 粒径別分画土壌へのシマジンの吸着の時間依存性(『地盤工学会論文報告集』Vol.39,No.4 (1999年8月発行)掲載論文の概要)
• KINETICS OF SIMAZINE SORPTION ON SOILS AND SOIL PARTICLE SIZE FRACTIONS
• 廃棄物埋立地層内における重金属不溶化機構の検討

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