title: Multiresidue analysis of environmental pollutants in edible vegetable oils by gas chromatography-tandem mass spectrometry.
abstract: A novel multiresidue determination of polycyclic aromatic hydrocarbons (PAHs), phthalate esters (PAEs) and alkylphenols (APs) in edible vegetable oils was developed. The samples were extracted with hexane-saturated acetonitrile, and after concentration, the extract was directly qualitatively and quantitatively analyzed by gas chromatography-tandem mass spectrometry (GC-MS/MS) with multiple reaction monitoring (MRM) in positive ion mode. The calibration curve displayed good linearity in the range of 2-100 μg/L, with correlation coefficients greater than 0.99. The mean recoveries were 70.0-110.8% by analysis of spiked oil, and the relative standard deviations (RSDs) were 2.1-10.2% (n=6), respectively. The limits of detection (LODs) for the 23 PAHs, 17 PAEs and 3 APs were 0.1-1.0 μg/kg, 0.1-4.0 μg/kg and 1.2-3.0 μg/kg, respectively. The established method effectively avoided interference from large amounts of lipids and pigments. It was applied to real sample and shown to be a rapid and reliable alternative for determination and confirmation in routine analysis.
authors.affiliation: Beijing Municipal Center for Food Safety Monitoring and Risk Assessment, Beijing 100041, People's Republic of China.
authors.forename: Rui-Ze
authors.initials: RZ
authors.lastname: Zhou
authors.affiliation: Beijing Municipal Center for Food Safety Monitoring and Risk Assessment, Beijing 100041, People's Republic of China.
authors.forename: Jie
authors.initials: J
authors.lastname: Jiang
authors.affiliation: Beijing Municipal Center for Food Safety Monitoring and Risk Assessment, Beijing 100041, People's Republic of China.
authors.forename: Ting
authors.initials: T
authors.lastname: Mao
authors.affiliation: Beijing Municipal Center for Food Safety Monitoring and Risk Assessment, Beijing 100041, People's Republic of China.
authors.forename: Ya-Song
authors.initials: YS
authors.lastname: Zhao
authors.affiliation: Beijing Municipal Center for Food Safety Monitoring and Risk Assessment, Beijing 100041, People's Republic of China. Electronic address: luyong0560@126.com.
authors.forename: Yong
authors.initials: Y
authors.lastname: Lu
mesh_terms: D002265:Carboxylic Ester Hydrolases / Q000737:chemistry*; D004785:Environmental Pollutants / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010938:Plant Oils / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000737:chemistry*; D014675:Vegetables / Q000737:chemistry*
chemical_list: D004785:Environmental Pollutants; D010938:Plant Oils; D011084:Polycyclic Aromatic Hydrocarbons; D002265:Carboxylic Ester Hydrolases; C033216:phthalate ester hydrolase
keywords: Alkylphenols; Benzo[a]anthracene (PubChem CID: 5954); Benzo[a]pyrene (PubChem CID: 2336); Benzo[b]fluoranthene (PubChem CID: 9153); Bis(2-ethylhexyl) phthalate (PubChem CID: 8343); Chrysene (PubChem CID: 9171); Dibutyl phthalate (PubChem CID: 3026); Diethyl phthalate (PubChem CID: 6781); Diisobutyl phthalate (PubChem CID: 6782); Diisononyl phthalate (PubChem CID: 590836); Dimethyl phthalate (PubChem CID: 8554); GC–MS/MS; Nonylphenol (PubChem CID: 1752); Oil analysis; Phenanthrene (PubChem CID: 995); Phthalate esters; Polycyclic aromatic hydrocarbons