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Fig. 8. Influence of incubation time on (a) initial phase and (b) second phase of imazaquin desorption from soil as described by Elovich model. Initial imazaquin–soil concentration was 17.8 µmol kg–1. Flow rate for all treatments was 1.0 mL min–1. Initial phase volume was 50 mL, after which flow was stopped for 24 h. Second desorption phase included the subsequent 15 mL of effluent. Regression slopes are different at a 0.05 level of significance when indicated by a or b.
