恒能量同步荧光法测定食品中的多环芳烃

建立了食品中多环芳烃的恒能量同步荧光谱测定方法。样品经环己烷超声波提取,硅胶过柱。优化了六种多环芳烃(PAHs)化合物的测定条件。六种样品(PAHs)回收率范围为77.48%～101.76%;相对标准偏差为0.97%～2.19%。结果表明,此方法具有灵敏度高,准确度好,能同时分离测定六种多环芳烃化合物的优点,适合于食品中多环芳烃化合物的分析测定。

A method for determination of polycyclic aromatic hydrocarbons （PAHs） in food by constant- energy synchronous fluorimetry was established. The samples were extracted ultrasonically with cyclohexane and then cleaned up by the silica column. Six samples of PAHs were separated and quantified, The recoveries ranged from 77.48% to 101.76% and the relative standard deviations were 0.97%-2.19%. This method was sensitive, accurate and suitable to the determination of PAHs in food.