摘要
研究了巯基棉富集分离 ,火焰原子吸收法测定镉的分析方法。该法测镉灵敏度为 3.95× 10 - 3μg·ml- 1,为不用巯基棉时的近 10倍 ,方法简便 ,选择性好 ,用于皮蛋中的镉的测定 ,方法的变异系数为 2 %～ 5% ,回收率为 94 %～ 10 6%。
A new,rapid and simple method was developed on the determination of cadmium in Songhua egg, that is enrichment and separation with sulfhydryl cotton Flame Atomic Absorption Spectrometry (FAAS). The sensitivity was 3.95×10 -3 μg·ml -1 , being 10 times higher than that when sulfhydryl cotton was not used. and the coefficient of variation and recovery were 2%～5% and 94%～106%, respectively.
关键词
镉
巯基棉
火焰原子吸收法
富集分离
食品
cadmium
sulfhydryl cotton
flame atomic absorption spectrometry
