葵花籽油中掺入少量地沟油的检测方法  

Study of Determination for Hogwash Oil Mixed with Sunflower Seed Oil

作　　者：纳鹏军[1] 

机构地区：[1]宁夏大学化学化工学院,宁夏银川750021

出　　处：《宁夏大学学报（自然科学版）》2012年第4期385-387,391,共4页Journal of Ningxia University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(21067010)

摘　　要：用三维荧光光谱法对葵花籽油中掺入少量地沟油进行了检测.结果表明,当加入地沟油的体积分数φ>10%时,在λex=310nm,λem=345nm处,葵花籽油相对荧光强度I由7 673迅速下降至3 555,与新鲜葵花籽油相比,荧光强度下降了4 118,由此可作为葵花籽油中是否掺入地沟油的判据.该方法灵敏、稳定,适合于葵花籽油中掺杂少量地沟油的测定.The three-dimensional fluorescence spectrometry was successfully used to detect a spot of hogwash oil mixed in sunflower seed oil. Experiment results showed that the fluorescence intensity decreased from 7 673 to 3 555 in λex= 310 nm and λem= 345 nm respectively, when adding more than 10% of hogwash oil in fresh oil. The fluorescence intensity decreased nearly 4 118, which could be used as a criterion to verdict whether a fresh sunflower seed oil mixed with hogwash oil or not. This method is relatively sensitive, stable and suitable for detection of little hogwash oil mixed with fresh sunflower seed oil.

关 键 词：地沟油 三维荧光 光谱 

分 类 号：O657.3[理学—分析化学]