Chinese Journal of Chromatography ›› 2017, Vol. 35 ›› Issue (11): 1171-1176.DOI: 10.3724/SP.J.1123.2017.07023

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Determination of 18 polychlorinated biphenyls in camellia seeds by multiple vortex and gas chromatography-triple quadrupole mass spectrometry

SHEN Danyu1, YUAN Xinyue2, ZHANG Yanping1, HANan Yongxiang1, LIU Yihua1, MO Runhong1, ZHONG Donglian1, TANG Fubin1   

  1. 1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China;
    2. Testing Center for Food Safety of Fuyang District of Hangzhou, Hangzhou 311400, China
  • Received:2017-07-31 Online:2017-11-08 Published:2014-01-17
  • Supported by:

    Fundamental Research Funds of Chinese Academy of Forestry (CAF) (Nos. CAFYBB2017QA006, CAFYBB2017SZ002).

Abstract:

A method based on the cleaning effects of different sorbents and gas chromatography-triple quadrupole mass spectrometry (GC-QQQ-MS/MS) was developed for the determination of 18 polychlorinated biphenyls (PCBs) in camellia seeds. The camellia seeds were extracted with acetonitrile, salted out with sodium chloride, then cleaned-up by QuEChERS with anhydrous MgSO4, C18, primary secondary amine (PSA), and multi walled carbon nanotubes (NANO) using multiple vortex after the centrifugal separation, and finally analyzed by GC-QQQ-MS/MS in multiple reaction monitoring mode via positive electrospray ionization. All the 18 PCBs could be completely separated with an excellent linear relationship. The limits of detection for the 18 PCBs were 5 μg/kg. For all the samples, the mean spiked recoveries was 109.2% with relative standard deviations (RSDs) of 2.9%-6.2% (n=3). The extraction, purification and analytical methods were developed and assessed. The method was successfully applied to the 48 samples from three main producing provinces of camellia seeds. All the 18 PCBs were not detected from the 48 samples.

Key words: camellia seeds, gas chromatography-triple quadrupole mass spectrometry (GC-QQQ-MS/MS), multiple vortex, polychlorinated biphenyls (PCBs)

CLC Number: