Laboratory study for adsorption of selected pesticides on two types of playa basin soils

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Title: Laboratory study for adsorption of selected pesticides on two types of playa basin soils
Author: Chen, Yu-chi
Abstract: The mobility of pesticides through soil following agricultural application is of concern due to the potential threat of groundwater contamination by leaching . The pesticide transport down through the soil into groundwater is affected by many processes taking place in the soil profile . These processes include convection , dispersion , diffusion , adsorption , degradation , volatilization , and plant uptake (Cheng and Koaklnen , 1986 ) . As the understanding of these processes increases , better control of pesticide fates should be expected . This study considers the effects of adsorption of four typical pesticides on two High Plains soils by means of laboratory experiments and mathematical models . Column experiments described by the one -dimensional convective -dlspersive transport equation are used to quantitatively determine the adsorption parameters for the selected pesticides . Batch experiments for adsorption isotherms are also conducted for the comparison with results of the column experiments .
URI: http : / /hdl .handle .net /2346 /11271
Date: 1991-05

Citation

Chen, Yu-chi Laboratory study for adsorption of selected pesticides on two types of playa basin soils. Doctoral dissertation, Texas Tech University. Available electronically from http : / /hdl .handle .net /2346 /11271 .

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