【摘要】 采用具有高分辨、高灵敏度的导数-恒能量同步荧光法分析测定了不同条件下,纸杯中残留苯并(a)芘在水性模拟液和脂肪模拟液中的迁移量。探讨了模拟物的种类、浸泡时间和温度对纸杯中苯并(a)芘的相对迁移率的影响。结果表明:该分析方法的回收率为89.2%～104.3%;纸杯中残留苯并(a)芘在脂肪模拟液中的相对迁移率明显高于水性模拟液的,纸杯盛装冷水时无苯并(a)芘浸出,而用于盛装热水可浸出苯并(a)芘;温度越高,浸泡时间越长,纸杯中苯并(a)芘向食品模拟液的相对迁移率也越大。更多还原

【Abstract】 This paper quantitatively determined the migration level of benzo(a)pyrene(BaP) from paper cups into aqueous food simulants or fatty stimulants,under different conditions by second derivative constant-energy synchronous fluorescence spectrometry(DCESFS),which proved to be a method with high sensitivity and spectral resolution.The influences of food simulants,time and temperature on the relative migration percent(%) of benzo(a) pyrene were discussed.Results showed that the recoveries of this method ranged from 89.2% to 104.3%.The migration percent(%) of fatty stimulants was higher than that of aqueous simulants. Migration into hot water was also observed,while the migration into cool water was almost negligible.The relative migration percent(%) increased with the increase of time and temperature.更多还原