Quantitative detection of enrofloxacin in chicken and pork by magnetic solid phase extraction and surface-enhanced Raman spectroscopy
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School of Food Science and Engineering, Shaanxi University of Science & Technology, Shaanxi Xi’an 710021, China

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R155

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    Abstract:

    Objective To develop a rapid and quantitative method for the detection of enrofloxacin in chicken and pork using magnetic solid phase extraction (MSPE) combined with surface enhanced Raman spectroscopy (SERS).Methods Magnetic Fe3O4@ covalent organic framework (COF) nanocomposites were synthesized and applied as absorbent to separate and enrich enrofloxacin. The SERS spectra of enrofloxacin were collected by a portable Raman spectrometer with Ag nanoparticles as enhancing substrate. The characteristic SERS signals of enrofloxacin were used to realize its quantification.Results Intensities of SERS signals at 745.77 cm-1 and the logarithmic values of the concentrations of enrofloxacin in the range of 5.0×10-7 to 1.0×10-5 mol/L displayed a good linear relationship with a coefficient of determination of 0.962. The limit of detection and limit of quantitation were 0.07 and 0.23 μg/g respectively. The recoveries of enrofloxacin in chicken and pork were 80.97%~100.98% with relative standard deviations of 1.6%~4.6%.Conclusion The developed method has the advantages of simple in operate, short in time, high in sensitivity and stability, which provides a new method for the rapid detection and on-site detection of enrofloxacin.

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WANG Panxue, WANG Li, LI Cen, LI Guoliang. Quantitative detection of enrofloxacin in chicken and pork by magnetic solid phase extraction and surface-enhanced Raman spectroscopy[J].中国食品卫生杂志,2024,36(5):541-549.

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  • Received:May 05,2023
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  • Online: August 09,2024
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