Dissipation Dynamics and Residue of Four Herbicides in Paddy Fields Using HPLC-MS/MS and GC-MS.

ABSTRACT: The dissipation dynamics and residue of pyrazosulfuron-ethyl, bensulfuron-methyl, acetochlor, and butachlor in paddy fields at Good Agricultural Practices (GAP) condition were carefully investigated in this study. The four herbicides' residues were determined based on a quick, easy, cheap, rugged, safe (QuEChERS) method coupled with HPLC-MS/MS and GC-MS. The limit of detection (LOD) for pyrazosulfuron-ethyl, bensulfuron-methyl, acetochlor, and butachlor in all matrices ranged from 0.04⁻1.0 ng. The limit of quantification (LOQ) of the four herbicides ranged from 0.01⁻0.1 mg/kg. Moreover, the average recoveries of the four herbicides ranged from 78.9⁻108% with relative standard deviations (RSDs) less than 15% at three different fortified levels for different matrices. The dissipation results

SUBMITTER: Yu Q 

PROVIDER: S-EPMC6352214 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature