【摘要】 <正> 萃取色层是液体色层的一种特殊形式。无机萃取色层是以吸附在惰性载体上的有机萃取剂作固定相,无机溶液作流动相,用以分离无机物质的一种色层法。它把溶剂萃取法中萃取剂的高选择性和色层分离法的高效性结合起来,成为一种有效分离的新技术。它比离子交换法有较多的优越性更多还原

【Abstract】 In this paper, the new approached theory for separation of R. E. elements by extraction chromatographic method was briefly described. Also, the development of the application of this method in the separation of rare earths was reviewed in detail with 68 references. Both the theory of gradient and the simple devices of gradient mixer were given.更多还原