A New Preconcentration Method for Metal Chelates with Micro Volume of Water Miscible Solvent and Its Application to the Determination of Cobalt by Reversed-Phase High-Performance Liquid Chromatography
A New Preconcentration Method for Metal Chelates with Micro Volume of Water Miscible Solvent and Its Application to the Determination of Cobalt by Reversed-Phase High-Performance Liquid Chromatography
复制标题
微量水溶性溶剂富集金属螯合物的新方法及其在反相高效液相色谱测定钴中的应用
DOI：
10.1246/cl.1992.955
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发表时间：
1992
影响因子：
1.6
通讯作者：
T. Yotsuyanagi
中科院分区：
文献类型：
--
作者：
E. Kaneko;H. Hoshino;T. Yotsuyanagi
本文提出了一种新的高效、简便的方法，用于富集常规萃取后有机相中的痕量分析物。将微量的高沸点水混溶性溶剂（溶剂A）如二甲亚砜加入到分离的有机相中，并通过蒸发除去低沸点有机溶剂（溶剂B）如氯仿，以浓缩溶剂A中的分析物。该方法已成功地应用于钴-2，2 ′-二羟基偶氮苯离子对溶剂萃取体系，作为金属螯合物反相高效液相色谱的一种强有力的富集技术。检测限为6 × 10−10 mol dm−3。
A new effective and simple method has been developed to concentrate trace analytes from the organic phase after conventional extraction. Micro volume of high boiling-point water miscible solvent (solvent A), such as dimethylsulfoxide, is added to the separated organic phase and the low boiling-point organic solvent (solvent B), such as chroloform, is removed by evaporation to concentrate the analytes in the solvent A. This method has been successfully applied to the ion-pair solvent extraction system of cobalt with 2,2′-dihydroxyazobenzene as a powerful preconcentration technique for reversed-phase high-performance liquid chromatography of the metal chelates. The detection limit is 6 × 10−10 mol dm−3.