The effect of low-molecular-weight organic acids （ acetic acid, malic acid, tartaric acid, oxalic acid, succinic acid and citric acid） on adsorption of quinclorac from alluvial sandy soil and the fourth red clay soil was investigated using high performance liquid chromatography and batch experimental technique. The results showed that the adsorption equilibrium time was delayed and the adsorption kinetic was coincided with the pseudo-second order kinetic equation. Quinclorac sorption isotherm could be described by Linear and Freundlich sorpti...
