摘要
根据糖能引发乙腈和水的混合溶液的相分离原理,将二乙基二硫代氨基甲酸钠与Ni2+、Co2+、Cu2+和Hg2+形成的螯合物萃取到体积较小的乙腈相,实现了待测金属螯合物的浓缩富集,并在C18柱上完成了各螯合物的分离。将这种方法应用到红糖样品中Cu2+的检测,获得了满意的结果。
Based on the principle that sugar can induce phase separation of mixture solution of acetonitrile and water,the chelates formed between sodium diethyl dithiocarbamate and Ni2＋,Co2＋,Cu2＋ and Hg2＋ were transferred to the acetonitrile phase in less volume.The preconcentrated chelates were separated on C18 column.This method was successfully applied to the determination of copper in brown sugar samples.
出处
《广州化工》
CAS
2011年第6期106-107,112,共3页
GuangZhou Chemical Industry
关键词
乙腈
糖析
相分离
金属离子
acetonitrile
sugaring-out
phase separation
metal ions
