The Adsorption of Herbicides and Pesticides on Clay Minerals and Soils. Part 1. Isoproturon
作者： J. Eric D. Davies , Nusrat Jabeen
关键词: Humic acid 、 Clay minerals 、 Bentonite 、 Kaolinite 、 Montmorillonite 、 Thermogravimetric analysis 、 Inorganic chemistry 、 Chemistry 、 Adsorption 、 Organic matter
摘要: The adsorption of isoproturon and two model compounds, N,N-dimethylurea and4-isopropylaniline, on clay minerals (bentonite,montmorillonite kaolinite), organic matter (humic acid) soil (with without matter) has been studied using FT-infrared spectroscopy (IR), thermogravimetric analysis (TGA), high pressure liquid chromatography (HPLC) X-ray diffraction (XRD).N,N-dimethylurea interacted with bentonite montmorillonite by the coordination carbonyl group, directly or indirectly through water molecules, exchangeable cations. Adsorption humic acid was due to hydrogen bonding active sites adsorbent. amino group ofN,N-dimethylurea appears tobe relatively inactive during adsorption. mechanisms involved in 4-isopropylaniline were protonation. No observed kaolinite. investigation suggested that both groups interactions adsorbents. Both contribute compounds but play a major role their soil.
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