Multiresidue pesticide analysis in green chilli using GC–MS/MS using modified QuEChERS method with highly efficient Fe3O4@CFR@GO nanocomposite

Abstract

• Fe 3 O 4 @CFR@GO was tested for the elimination of pigments in pesticide analysis. • Fe 3 O 4 @CFR@GO showed an excellent clean-up efficiency. • Satisfactory purification and recovery effects were achieved in chilli matrices. The presence of pesticide residues in food and vegetables is a growing concern for consumers. In order to monitor these residues reliably, a selective and sensitive, multi-residue system has been developed and validated in green chilli by gas chromatography-tandem mass spectrometry (GC–MS/MS). Fe 3 O 4 @CFR@GO (Fe 3 O 4 @Catechol Formaldehyde Resin@Graphene Oxide) magnetic nanocomposite is used as reversed dispersive solid phase extraction (r-DSPE) materials. Fe 3 O 4 @CFR@GO magnetic nanocomposite is synthesized, characterised by XRD, FTIR and SEM. Comparative investigations have shown that Fe 3 O 4 @CFR@GO magnetic nanocomposite not only has high pigment removal efficiency, but also has more clean-up than typical graphitized carbon black (GCB). The processing of two multiple reaction monitoring (MRM) transformations for each analyte is done by GC–MS/MS in electron impact (EI) mode. Precision and accuracy were tested by recovery studies. The technique proved to be reliable and sensitive in green chilli samples for the routine testing of 35 pesticides.