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.
出处
《宁夏大学学报（自然科学版）》
CAS
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)
关键词
地沟油
三维荧光
光谱
hogwash oil
three-dimensional
fluorescence spectrometry
