用12%(w/V)的氢氧化钾-乙醇溶液皂化食用油的脂肪酸,以环己烷萃取皂化液中的多环芳烃,经浓缩,柱层析纯化并浓缩,取微量试样液稀释后,通过选择合适能量差,建立了同步荧光法测定食用油中多环芳烃含量的新方法,其线性范围为5—1000ng.mL-1,检出限在0.04—15.21ng.mL-1之间,平均加标回收率在81.94%—90.06%之间。该方法具有快速、简便、准确等特点。 The fatty acids of edible oils were saponified with 12% (w / v) potassium hydroxide-ethanol solution, the PAHs in the saponified liquid were extracted with cyclohexane, concentrated and purified by column chromatography and concentrated. A new method of simultaneous fluorimetric determination of polycyclic aromatic hydrocarbons (PAHs) in edible oil was established by selecting the appropriate energy difference, with a linear range of 5-1000ng.mL-1 and a detection limit of 0.04-15.21ng.mL-1 Between the average spike recovery was 81.94% -90.06%. The method is fast, easy and accurate.