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Diffusion of methyl bromide in soil
Author(s) -
MIGNARD E.,
BENET J. C.
Publication year - 1989
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1989.tb01263.x
Subject(s) - dissolution , bromide , phenomenological model , diffusion , thermodynamics , penetration (warfare) , chemistry , kinetics , aqueous solution , soil water , solubility , inorganic chemistry , organic chemistry , soil science , geology , physics , mathematics , quantum mechanics , operations research
SUMMARY Phenomenological modelling is proposed for penetration by diffusion with aqueous dissolution of a gaseous constituent in non‐saturated soil when there is a thermodynamic imbalance between this gas phase constituent and the same constituent in solution. Non‐equilibrium experiments (Mignard & Benet, 1986) led to specifying the equation governing the kinetics of dissolution and measurement of the phenomenological coefficient for methyl bromide. The results of the model with dissolution imbalance are compared with those of models in the literature which assume immediate dissolution equilibrium in the treatment of soil with methyl bromide applied at the surface. The model developed gives profiles of concentration of substance in the soil in both liquid and gas phases, and makes it possible to judge the extent of the soil zone treated and to forecast what will be the behaviour of the substance.