Transport abilities of alkaline earth, transition, and heavy metal ions were examined for three kinds of disubstituted monoacid derivatives of Kemp’s triacid as transport agents for a liquid membrane system. Diamide derivatives showed high transport ability for CaII over MgII, with selectivity ratios greater than 25. Imide monoacids were also CaII selective. For transition and heavy metal ions, all monoacids including diester monoacid showed very high HgII transport, but with different selectivities depending on the functional group. High HgII/AgI ( = 24), HgII/CuII ( = 194), and HgII/PbII ( = 85) selectivities were observed for diamide, diester, and imide monoacids, respectively. The transport mechanisms are discussed for alkaline earth, transition, and heavy metal ions utilizing ion chromatography analysis of anions co-transported.
研究了坎普三酸的三种二取代一元酸衍
生物作为液膜系统传输剂的碱土
金属离子、过渡
金属离子和重
金属离子的传输能力。二酰胺衍
生物对 CaII 的传输能力高于对 MgII 的传输能力,选择性比大于 25。
酰亚胺一元酸对 CaII 也具有选择性。对于过渡
金属离子和重
金属离子,包括二酯一元酸在内的所有一元酸都表现出非常高的 HgII 转运,但根据官能团的不同具有不同的选择性。对于二酰胺、二酯和
酰亚胺一元酸,分别观察到高 HgII/AgI (= 24)、HgII/CuII (= 194) 和 HgII/PbII (= 85) 选择性。利用共转运阴离子的离子
色谱分析讨论了碱土
金属离子、过渡
金属离子和重
金属离子的转运机制。