Simultaneous determination of organophosphorus, organochlorine, pyrethriod and carbamate pesticides in Radix astragali by microwave-assisted extraction/dispersive-solid phase extraction coupled with GC-MS

► Simultaneous detection of OPPs, OCPs, PYRs and CBs in CHMs was developed. ► MAE/D-SPE technique simplifies sample treatment and minimizes the use of solvent. ► Matrix-matched standard curves were used for quantitative analysis.