食品科学

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凝胶渗透色谱-高效液相色谱法同时测定食用油中BaP、BHA、BHT、TBHQ、DBP、DEHP

朱晓玲,刘 杰,范志勇,曹 晖,彭青枝   

  1. 湖北省食品质量安全监督检验研究院,湖北 武汉 430070
  • 出版日期:2013-12-25 发布日期:2014-01-03

Determination of BaP, BHA, BHT, TBHQ, DBP and DEHP in Edible Oil by Gel Permeation Chromatography and High Performance Liquid Chromatography

ZHU Xiao-ling,LIU Jie,FAN Zhi-yong,CAO Hui,PENG Qing-zhi   

  1. Hubei Provincial Institute for Food Supervision and Test, Wuhan 430070, China
  • Online:2013-12-25 Published:2014-01-03

摘要:

建立同时测定食用油中BaP、BHA、BHT、TBHQ、DBP、DEHP的凝胶渗透色谱-高效液相色谱分析方法。食用油样品经预处理后采用GPC进行净化,C18反相色谱柱(250mm×4.6mm,5μm)进行分离,乙腈和水为流动相,梯度洗脱,并采用紫外-荧光检测器串联的方式进行检测。在最佳测定条件下,6种目标化合物在相应的线性范围内其线性相关系数均不小于0.9980,方法的回收率为82.0%~103.7%,相对标准偏差为3.2%~7.5%(n=6)。该方法简便、准确,可用于食用油样品中BaP、BHA、BHT、TBHQ、DBP、DEHP的同时测定。

关键词: 凝胶渗透色谱, 反相高效液相色谱, 食用油

Abstract:

A method was developed for the simultaneous determination of BaP, BHA, BHT, TBHQ, DBP and DEHP in edible
oil by gel permeation chromatography and high performance liquid chromatography (GPC-HPLC). Samples were purified by GPC
after pretreatment, then separated on a reversed-phase C18 column with acetonitrile and water as the mobile phase in a gradient
elution mode. The target compounds were detected by UV-tandem fluorescence detector. Under the preferred test conditions, the
linear ranges of the method were 0.0002–0.2 mg/L for BaP, 1–500 mg/L for BHA, BHT and TBHQ, and 0.1–100 mg/L for DBP
and DEHP, with correlation coefficients of more than 0.9980. The spiked recovery rates were 82.0%–103.7% with relative standard
deviations (RSD, n = 6) of 3.2%–7.5%. The developed method is simple and accurate, and can be used for the simultaneous
determination of BaP, BHA, BHT, TBHQ, DBP and DEHP in edible oil samples.

Key words: gel permeation chromatography, reversed-phase high performance liquid chromatography, edible oil