WIT Press


Sorption And Transport Of Imazamethabenz In Agricultural Soils

Price

Free (open access)

Volume

13

Pages

8

Published

1995

Size

730 kb

Paper DOI

10.2495/WP950451

Copyright

WIT Press

Author(s)

J. Alvarez, A. Carton, T. Isla & A. Herguedas

Abstract

Sorption and transport characteristics of Imazamethabenz-methyl were investigated evaluating the validity of the transport ideality assumptions (i.e. isotherm linearity, sorption-desorption singularity, and instantaneous equilibrium). Laboratory batch equilibrium studies were conducted to evaluate the sorption-desorption behaviour and miscible displacement experiments on soil columns were performed at several pore water velocities. Experiments revealed a true hysteresis on desorption, with the adsorption isotherm being linear, and a transport-related nonequilibrium. Thus, this chemical will be detected at a given monitoring point earlier than when calculated by a local equilibrium assumption model and desorption will take l

Keywords



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