Journal
FOOD CHEMISTRY
Volume 338, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.127805
Keywords
QuEChERS; Magnetic fluorinated multi-wall carbon nanotubes; Clean-up materials; Pesticide residues
Funding
- National Natural Science Foundation of China [21775100]
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By utilizing magnetic fluorinated multi-wall carbon nanotubes as QuEChERS clean-up materials, an improved method for detecting organophosphorus pesticide residues was successfully developed, with promising results shown in Lycium ruthenicum Murr. (L. ruthenicum) samples.
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.
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