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Determination of 2-Naphthol in Fruits and Vegetables by High Performance Liquid Chromatography-Tandem Mass Spectrometry

XIA Shuang,XI Cun-xian,ZHANG Lei,YAN Ai-hua,TANG Bo-bin,WANG Guo-min,MU Zhao-de   

  1. 1. College of Pharmacy, Chongqing Medical University, Chongqing 400016, China;
    2. Chongqing Engineering and Technology Research Center for Import and Export Food Safety,Chongqing Entry-Exit Inspection and Quarantine Bureau, Chongqing 400020, China
  • Online:2013-06-25 Published:2013-06-17

Abstract:

An analytical method based on high performance liquid chromatography-tandem mass spectrometry was
developed for the determination of 2-naphthol in fruits and vegetables. Samples were extracted with acetonitrile, and the
extract was then cleaned up on an LC-NH2 cartridge. The analytes were determined by LC-MS/MS with electrospray
ionization source in multiple reaction monitoring (MRM). Quantification was conducted by external standard calibration.
Good linearity was observed in the range of 50.00 to 1000.00 μg/L (r2 ≥ 0.9997). The limit of detection of the established
method was 10 μg/kg. The recovery rate of 2-naphthol was 70.4%–105.5% at spiked levels of 10, 20 μg/kg and 50 μg/kg in
deferent samples, with relative standard deviation of 4.1%–10.6%.

Key words: high performance liquid chromatography-tandem mass spectrometry (LC-MS/MS), 2-naphthol, fruits, vegetables