Application of β-Cyclodextrin Magnetic Carbon Nanotube Solid-Phase Extraction in the Detection of 4 Organophosphorus Residues in Vegetables
A method was developed for the determination of 4 organophosphorus pesticide residues in vegetables by using β-cyclodextrin magnetic carbon nanotubes solid-phase extraction(β-CD@MCNT)and gas chromatography-flame photometric detector.The results showed that 4 organophosphorus pesticides had a good linearity in the range of 0.001～1.000 μg·mL-1,the correlation coefficients were higher than 0.998 under the optimal conditions.Their average recoveries at spiked levels of 0.02 mg·kg-1,0.10 mg·kg-1 and 0.50 mg·kg-1 were 79.0%～115.3%with relative standard deviations of 2.8%～10.1%.The method has the advantages of high precision and accuracy,and can be suitable for the analysis of 4 kinds of organophosphorus pesticide residues detection in vegetables.
magnetic solid phase extractionvegetablesorganophosphatesdetection
万方数据
维普
