Fate of herbicides influenced by biotic and abiotic interactions

摘要: The interactions between 2,4-D and simazine with inorganic organic soil colloids affected by adsorption (abiotic) enzymatic mechanisms (biotic) were investigated. Complex model systems which closely simulate those encountered in soils [i.e. pure montmorillonite, montmorillonite covered different amounts of OH-Al species (chlorite-like complexes)], used as adsorbents. gave a negligible on whereas it was significantly adsorbed chlorite-like complexes. larger the clay surfaces, greater quantity adsorbed. An opposite behaviour observed simazine, much more than A well characterised laccase from fungal strain Cerrena unicolor biotic catalyst. enzyme displayed lower ability to oxidise extremely efficient oxidation 2,4-DCP (a derivative 2,4-D) catechol. presence or reactive co-substrates differently influenced transformation 2,4-DCP. results obtained this study provided useful information for predicting xenobiotic substance when entered into soil.