期刊
JOURNAL OF CHROMATOGRAPHY A
卷 988, 期 1, 页码 33-40出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0021-9673(02)02059-9
关键词
solid-phase extraction; oils; clean-up methods; edible oils; polynuclear aromatic hydrocarbons
A solid-phase extraction (SPE) method for sample clean-up, followed by reversed-phase high-performance liquid chromatography (HPLC) with fluorescence detection is reported for the determination of polycyclic aromatic hydrocarbons (PAHs) in edible oils. The effects of experimental variables, such as washing and elution solvents, sample solvent and drying time have been studied using C-18 cartridges. Recoveries and selectivity using other sorbent materials (C-8, C-2, CH, PH and NH2) were also examined, with C-18 being the best one. The recoveries ranged between 50 and 103% depending on the molecular mass of the PAH. The limits of quantitation were lower than 1 ng/g for most PAHs and good precision was achieved. The method was validated using certified reference materials. (C) 2002 Elsevier Science B.V. All rights reserved.
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