Determination of 4 Benzoylurea Pesticides in Irrigation Water by High Performance Liquid Chromatography with Magnetic Solid phase Extraction
  
View Full Text  View/Add Comment  Download reader
DOI:
KeyWord:Fe3O4-NH2@MIL-101  magnetic solid phase extraction(MSPE)  benzoylurea pesticides  irrigation water
  
AuthorInstitution
贾叶青,念琪循,张磊,冀欠欠,徐厚君,王曼曼,王学生,郝玉兰 华北理工大学公共卫生学院
Hits: 332
Download times: 367
Abstract:
      A method of high performance liquid chromatography(HPLC) with magnetic solid phase extraction(MSPE) was developed for the determination of four benzoylurea pesticides,ie.forchlorfenuron,penfluron,hexaflumuron and lufenuron in irrigation water.A magnetic metal organic framework sorbent(Fe3O4-NH2@MIL-101) was fabricated via solvothermal method.The composition and morpholgy of the composite were characterized by scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR) and X ray diffraction(XRD) analysis.Meanwhile,the magnetic intensity of the material was detected with a vibrating sample magnetometer.The determination of four analytes was performed by HPLC with the synthesized composite as MSPE adsorbent.The adsorption and elution factors,including adsorbent amount,adsorption time,pH value,elution time and elution volume,were investigated.Under the optimum conditions,the calibration curves for four benzoylurea pesticides showed good linear relationships in the range of 0.010-3.0 mg/L with correlation coefficients(r) higher than 0.999 5.The detection limits and the quantitation limits were in the ranges of 0.03-0.09 μg/L and 0.10-0.30 μg/L,respectively.The recoveries at three spiked levels ranged from 81.7% to 95.4% with RSD less than 10%.With a simple pretreatment process and an extraction time within 15 min,the method could be applied in the analysis on trace residues of benzoylurea pesticides in irrigation water.
Close