日本合成了一种含有诸如丙邻二胺四醋酸盐功能团的新生螯合树脂(PDTA树脂)。该PDTA树脂中配位体数量为127μmol/g,与吸附在树脂上的Cu一样。测定了稀土元素(REEs)在PDTA树脂上的色谱选择性和滞留行为。获得了一系、列REEs在PDTA树脂上的容量因子与相应的PDTA络合物的稳定性常数之间的良好相关性(R~2=0.963)。由 Japan has synthesized a nascent chelating resin (PDTA resin) containing functional groups such as propylenediaminetetraacetate. The number of ligands in this PDTA resin was 127 μmol / g, the same as Cu adsorbed on the resin. The chromatographic selectivity and retention behavior of rare earth elements (REEs) on PDTA resin were determined. A good correlation (R ~ 2 = 0.963) was obtained between the capacity factors of the REEs on the PDTA resin and the stability constants of the corresponding PDTA complexes. by