Residue Determination and Dynamic Research of Prochloraz and Its Metabolite 2,4,6-Trichlorophenol in Lily Plants
A QuEChERS combined with high-performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS)and gas chromatography(GC)were established to detect the residues of prochloraz and its metabolite trichlorophenol in lily plants,respectively.The sample was extracted with acetonitrile,purified by dispersed solid-phase extraction,and detected by HPLC-MS/MS and GC.The results showed that at the spike levels of 0.01～0.5 mg/kg,the av-erage recovery rates of prochloraz and trichlorophenol in lily plants were 80.2％～87.8％and 81.1％～105.5％with RSD of 5.2％～6.7％and 3.0％～8.4％,respectively.The analysis method is simple and accurate.The degradation dynamics of prochloraz in lily plants indicate that pro-chloraz has a fast degradation rate and low residue,which is an easily degradable pesticide.However,after application,prochloraz quickly transformed into the more toxic environmental pollutant 2,4,6-trichlorophenol.Results of this study provide the reference data for the safe use of prochloraz in lily.
万方数据
维普
