Selective Liquid Membrane Transport of Lead(II) by an Acyclic Polyether Dicarboxylic Acid Ionophore
作者:Kazuhisa Hiratani、Toshikazu Takahashi、Hideki Sugihara、Kazuyuki Kasuga、Kyoko Fujiwara、Takashi Hayashita、Richard A. Bartsch
DOI:10.1021/ac9701593
日期:1997.8.1
chain structure and substitutents in six acyclic polyether dicarboxylic acids and one acyclic polyether carboxylic acid upon the efficiency and selectivity of pH-driven Pb(2+) transport in a bulk chloroform membrane system have been assessed. Among the carriers, 1,2-bis[2-(o-carboxyphenoxy)ethoxy]-4-tert-butylbenzene (1) is found to exhibit high selectivity for transport of Pb(2+) compared with alkali
评估了六种无环聚醚二羧酸和一种无环聚醚羧酸的链结构和取代基对在大体积氯仿膜系统中pH驱动的Pb(2+)传输效率和选择性的影响。在载体中,发现1,2-双[2-(邻-羧基苯氧基)乙氧基] -4-叔丁基苯(1)与碱金属阳离子和各种碱金属阳离子相比,对Pb(2+)的运输具有很高的选择性。其他二价金属离子的种类 离子载体1还从水溶液中提取Pb(2+)到氯仿中,损失了两个质子。分离出Pb(2+)与去离子1的1:1配合物。