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有关协同萃取的研究已十分广泛,但文献报道的大多是有关螯合(或酸性磷)-中性萃取剂组成的协萃体系。关于螯合-螯合萃取剂对金属离子的协萃研究报道甚少。Newman Sekine以及Sudersanan等曾研究过β-二酮类萃取剂之间的协同萃取,但这类体系的协萃机理和规律性尚有待探讨。
The research on the synergistic extraction has been very extensive, but most of the literature reports about the synergistic extraction system of chelating (or acidic phosphorous) - neutral extractants. There is little research on the synergistic extraction of metal ions by chelating-chelating extractant. Newman Sekine and Sudersanan et al. Have studied the synergistic extraction of β-diketone extractant. However, the synergistic extraction mechanism and regularity of these systems have yet to be explored.