SLOW RELEASE FORMULATIONS OF PESTICIDES

摘要

Slow-Release agrochemical formulations for the prevention of leaching and contamination of soil and ground water. The agrochemicals are organic compounds with non-ionic and non-polar molecular structures, which are adsorbed to clays whose surface properties have been transformed from hydrophilic to organophilic by previous adsorption of an organic cation, usually of quaternary ammonium structure, having at least one benzyl group attached to the ammonium nitrogen atom. The intermolecular interactions on the clay surface result in a reduction of the solubility in water of the agrochemical, preventing its leaching in the field.