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Improvement of HPLC determination of BaP in oil-tea camellia seed oil
  
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KeyWord:benzo(a)pyrene  HPLC  pretreatment  recovery rate  improvement
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WU Yaoxiang, SHE Jiarong, LI Yuping  
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Abstract:
      Based on the national standard method GB 5009.27—2016, the purification conditions of pretreatment for determination of BaP in oil-tea camellia seed oil was improved, and the recovery rates before and after improvement were compared. The results showed that under the purification conditions of with BaP standard solution diluted by n-hexane as standard addition, elution with 10 mL n-hexane, redissolved with 1 mL acetonitrile, and the liquid chromatographic conditions of InertSustain C18 column separation, mobile phase acetonitrile 0.88 mL/min and water 0.12 mL/min, flow rate 1.0 mL/min, fluorescence detector excitation wavelength 384 nm, emission wavelength 406 nm and column temperature 35?℃, the BaP recovery rate was higher, in the range of 91.68%-120.62%. So the accuracy of the detection was improved effectively.
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