Rapid Determination of Metribuzin and Three Major Transformation Products in Soil and Plant by Gas Chromatography–Tandem Mass Spectrometry

Metribuzin is a pre- and post-emergence triazinone herbicide used in variety of crops. This degraded the environment into three major metabolites that have high water solubility, to very soil mobility, low moderate persistence soil. paper describes development an analytical method based on ultrasound-assisted extraction GC-MS/MS determination for metribuzin its main plants. The developed provided good recoveries all compounds plants (from 73 121%). quantitation limits obtained from (2.6 18 µg/kg) allow determining presence these at trace levels. To evaluate applicability methods, bean were grown plastic pots with treated collected after 23 days. At end assay, only 11% initial concentration remained detected plants, desamino-diketo-metribuzin most abundant metabolite. It expected application methods can provide more data monitor residues due treatments.