A simplified version of the QuEChERS method for the extraction of quinclorac from soil samples was proposed. Optimum results were obtained dispersing soil in water, followed by the addition of 1 % acetic acid in acetonitrile, magnesium sulfate and sodium acetate as a modification of the quick, easy, cheap, effective, rugged and safe (QuEChERS) method. Liquid chromatography/ultraviolet (LC-UV) detector was then used to analyze the extracts without any other sample pretreatment. The result showed the recovery ranged from 73.8 to 106.4 % and 66.6 to 87.3 % with the relative standard deviations of...
