中文摘要：

为了准确、快速检测食用油中苯并（a）芘的含量，建立了食用油中苯并（a）芘的超声波辅助一绿色溶剂萃取及GC／MS联用技术检测方法，其检出限和定量限分别为0．017肛g／L和0．053μg／L，加标回收率大于95％，日内和日间相对标准偏差分别为1．32％～1．76％和2.46％～3．17％，表明该方法符合痕量分析要求。实验考察了萃取剂种类、配比、用量、超声波功率、温度和时间对苯并（a）芘萃取的影响，获得了较优的萃取工艺条件：ACN—DMC配比（V／V）7：3，萃取剂用量25mL，超声功率300W，温度20℃，时间10min／次，萃取两次。采用该方法测定38个食用油样中苯并（a）芘含量，结果表明，其中30个不同品牌的新鲜食用油苯并（a）芘含量范围为0．09～8．17μg／kg；8个油炸食用油苯并（a）芘含量范围为6．03～11．73μg／kg。本方法耗时短且减少了有毒溶剂的使用，为食用油中含有的苯并（a）芘分析检测提供了一种科学简捷的方法。

英文摘要：

Abstract： To quickly and accurately analyze B （a）p in edible oils, an ultrasonic assisted extraction with environmental friendly solvent using gas chromatography-mass spectrometry （GC-MS）method was developed. The limits of detection and quantization obtained were 0. 017 p,g/L and 0. 053μg/L respectively, and the recovery rate was higher than 95% and the relative standard deviations were 1.32% ~ 1.76% for inter-day and 2. 46% -3.17% for intra-day, demonstrating the proposed method was feasible and effective. Optimizing the conditions of ultrasound assisted extraction such as extractant, ration, dosage, ultrasonic power, temperature and time, an optimum method was deve- loped. The levels of B（a） p by using this method ranged from 0. 09 μg/kg to 8. 17μg/kg in 30 flesh edible oil samples, from 6.03 μg/kg to 11.73 μg/kg in 8 frying oil samples. The development of this method provided a scientific and simple method for determination of B （a） p in less time and solvent.