PMID- 38364498 OWN - NLM STAT- MEDLINE DCOM- 20240401 LR - 20240401 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 445 DP - 2024 Jul 1 TI - Method development of multi pesticide residue analysis in country beans collected from Dhaka, Bangladesh, and their dietary risk assessment. PG - 138741 LID - S0308-8146(24)00390-X [pii] LID - 10.1016/j.foodchem.2024.138741 [doi] AB - The aim of the study was to develop a modified QuEChERS method coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the simultaneous determination of five multi-class pesticides in country beans collected from Dhaka, Bangladesh. Pesticides were extracted using ACN, and to minimize the co-extraction matrix, optimized d-SPE cleanup was done using sorbents (GCB, PSA, and C18). In the calibration range, the method showed excellent linearity with a correlation coefficient of R(2) >/= 0.9990 both in solvent- and matrix-matched calibration. For the selected pesticides, average recoveries (at four spiking levels (n = 5) of 10, 20, 100, and 200 microg/kg) of 70-100 % were achieved with relative standard deviations (RSDs)