A magnetic fluorinated multi-walled carbon nanotubes-based QuEChERS method for organophosphorus pesticide residues analysis in Lycium ruthenicum Murr

Food Chem. 2021 Feb 15:338:127805. doi: 10.1016/j.foodchem.2020.127805. Epub 2020 Aug 9.

Abstract

In order to meet the requirements of pesticide residues' detection in complex matrix samples, the magnetic fluorinated multi-wall carbon nanotubes (M-F-MWCNTs) were prepared and applied as new QuEChERS clean-up materials. Combined with GC-MS, an improved QuEChERS method was successfully developed for the detection of organophosphorus pesticide residues. The results showed that the M-F-MWCNTs could effectively remove the interfering substances in Lycium ruthenicum Murr. (L. ruthenicum) samples. The recoveries of 10 tested targets were 74.9% to 113.5% with the relative standard deviations (RSDs) of 3.9-14.7%. The experiment results pointed out that the M-F-MWCNTs were qualified as QuEChERS clean-up materials and expected to be applied to other complex matrix samples and pesticide targets.

Keywords: Clean-up materials; Magnetic fluorinated multi-wall carbon nanotubes; Pesticide residues; QuEChERS.

MeSH terms

  • Fluorine / chemistry
  • Food Analysis / instrumentation
  • Food Analysis / methods*
  • Food Contamination / analysis*
  • Gas Chromatography-Mass Spectrometry / methods
  • Limit of Detection
  • Lycium / chemistry*
  • Magnetic Phenomena
  • Nanotubes, Carbon / chemistry*
  • Organophosphates / analysis
  • Pesticide Residues / analysis*

Substances

  • Nanotubes, Carbon
  • Organophosphates
  • Pesticide Residues
  • Fluorine