Analysis of polycyclic aromatic hydrocarbons in vegetable oils combining gel permeation chromatography with solid-phase extraction clean-up

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Abstract

A semi-automatic method for the determination of polycyclic aromatic hydrocarbons (PAHs) in edible oils using a combined gel permeation chromatography/solid-phase extraction (GPC/SPE) clean-up is presented. The method takes advantage of automatic injections using a Gilson ASPEC XL sample handling system equipped with a GPC column (S-X3) and pre-packed silica SPE columns for the subsequent clean-up and finally gas chromatography-mass spectrometry (GC-MS) determination. The method was validated for the determination of PAHs in vegetable oils and it can meet the criteria for the official control of benzo[a]pyrene levels in foods laid down by the Commission of the European Communities. A survey of 69 vegetable oils sampled from the Danish market included olive oil as well as other vegetable oils such as rapeseed oil, sunflower oil, grape seed oil and sesame oil. Levels of benzo[a]pyrene in all the oils were low (<0.2-0.8 mu g kg(-1)), except for one sample of sunflower oil containing 11 mu g kg(-1) benzo[a]pyrene.
Original languageEnglish
JournalFood Additives and Contaminants
Volume24
Issue number7
Pages (from-to)758-767
ISSN0265-203X
DOIs
Publication statusPublished - 2007

Keywords

  • gel permeation chromatography
  • rapeseed oil
  • vegetable oil
  • polycyclic aromatic hydrocarbons (PAHs)
  • sesame oil
  • solid-phase extraction
  • sunflower oil
  • grape seed oil
  • method validation
  • benzo[a]pyrene
  • analysis

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