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首页> 外文期刊>Separation and Purification Technology >Solid-phase extraction of indium(III) ions onto thermosensitive poly(N-isopropylacrylamide)
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Solid-phase extraction of indium(III) ions onto thermosensitive poly(N-isopropylacrylamide)

机译：铟（III）离子固相萃取到热敏聚（N-异丙基丙烯酰胺）上

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摘要

The feasibility of a metal separation technique using thermosensitive N-isopropylacrylamide (NIPA) polymer was examined. A solid-phase extraction (SPE) technique was proposed, which involved the complexation of a target heavy metal ion and an extractant in an aqueous solution and the subsequent adsorption of the metal-extractant complexes onto the NIPA polymer precipitates through a hydrophobic interaction above the lower critical solution temperature. In a model system consisting of In(III) ions, n-octyl phosphate as an organophosphorus extractant, and NIPA polymer, the proposed SPE technique was successfully implemented. Approximately 90% of the In(III) ions were extracted from the aqueous solution at pH ca. 2, and In(III) and Zn(II) ions were mutually separated. The extractant effectively played the dual role of a separator and a mediator to adsorb a target metal selectively onto the NIPA polymer. The SPE technique is simple, environmentally friendly, and potentially applicable to a variety of metal separation processes in industries.
机译：检验了使用热敏N-异丙基丙烯酰胺（NIPA）聚合物进行金属分离技术的可行性。提出了一种固相萃取（SPE）技术，该技术涉及目标重金属离子和萃取剂在水溶液中的络合，随后金属萃取剂络合物通过在膜上方的疏水相互作用而吸附到NIPA聚合物上。降低临界溶液温度。在由In（III）离子，正辛基磷酸作为有机磷萃取剂和NIPA聚合物组成的模型系统中，成功实施了所建议的SPE技术。在pH约为2的条件下，从水溶液中提取了大约90％的In（III）离子。 2，并且In（III）和Zn（II）离子相互分离。萃取剂有效地发挥了分离器和介体的双重作用，将目标金属选择性地吸附到NIPA聚合物上。 SPE技术简单，环保，并且可能适用于工业中的各种金属分离工艺。

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