Agrichemicals in Ground Water of the Midwestern USA: Relations to Soil Characteristics

摘要: A comprehensive set of soil characteristics were examined to determine the effect on transport agrichemicals ground water. This paper examines relation local concentrations and occurrence nitrate, atrazine (2-chloro-4 ethylamino-6-isopropylamino-s-trazine), residue [atrazine + deethylatrazine (2-amino-4-chloro-6-isopropylamino-s-triazine) deisopropylatrazine (2-amino-4-chloro-6-ethylamino-s-triazine)] from 99 wells completed in unconsolidated aquifers across midwestern USA. The nitrate water directly related that rate movement. substantial differences relations found among suggest different processes affect transformation, adsorption, these contaminants. multivariate analysis determined explained amount variability for (19.0%), (33.4%), (28.6%). These results document that, although soils do water, other factors such as hydrology, land use, climate must also be considered understand