In this paper,the michanism of extraction of Zinc and Cadmium from sulfuric acid sys-tem with Mono(2-cthylhexyl)2-cthylhexyl phosphonate(P507)is discusscd.

• 本文采用2-乙基已基膦酸单（2-乙基已基）酯（简称P507）的磺化煤油溶液从硫酸体系中萃取锌、镉。