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Equilibrium adsorption of isoproturon on soil and pure clays
Author(s) -
WORRALL F.,
PARKER A.,
RAE J.E.,
JOHNSON A.C.
Publication year - 1996
Publication title -
european journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 1351-0754
DOI - 10.1111/j.1365-2389.1996.tb01398.x
Subject(s) - adsorption , freundlich equation , langmuir , chemistry , clay minerals , soil water , partition coefficient , organic matter , environmental chemistry , langmuir equation , mineral , mineralogy , soil science , geology , organic chemistry
Summary The adsorption of isoproturon on soil and pure clay minerals has been investigated as a means of understanding its mobility in soils. Measured adsorption coefficients are correlated with soil and clay mineral properties. Soil organic matter controlled the adsorption of isoproturon at organic carbon contents exceeding 27 g kg −1 , whereas at less than this threshold, clay mineral surfaces appeared to control adsorption. The effect of varying temperature suggests that adsorption of isoproturon is a physical process. From the comparison of the fits of linear, Freundlich, and Langmuir adsorption isotherms to the data, the adsorption is best described as a partition process.