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首页> 外文期刊>Journal of Applied Polymer Science >Enhancement of uranyl ion uptake by the prestructuring of poly(2-hydroxyethyl methacrylate itaconic acid) hydrogels in the presence of lead and cadmium ions/polarographic determination
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Enhancement of uranyl ion uptake by the prestructuring of poly(2-hydroxyethyl methacrylate itaconic acid) hydrogels in the presence of lead and cadmium ions/polarographic determination

机译：在铅和镉离子存在下通过聚甲基丙烯酸2-羟乙酯衣康酸水凝胶的预结构化来增强尿烷离子的吸收/极谱法测定

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摘要

Poly(2-hydroxyethyl methacrylate/itaconic acid) [P(HEMA/IA)] hydrogels were prepared by the gamma-ray irradiation of aqueous solutions. In the presence of lead and cadmium ions, the UO22+ ion uptake on P(HEMA/IA) hydrogels was investigated with two types of hydrogel systems prepared by nonprestructuring and prestructuring methods. A differential pulse polarographic technique was used for the determination of trace quantities of uptake elements by the measurement of the reduction peak currents at -200, -410, and -580 mV for UO22+, Pb(II), and Cd(II) ions, respectively. Hydrogels prestructured with UO22+ ions took up approximately 45% more UO22+ ions than hydrogels prepared by the usual procedure. The UO22+ ion uptake capacity of the hydrogels increased with an increasing percentage of itaconic acid in the hydrogel systems and an increasing concentration of UO22+ ions in the presence of Pb(II) and Cd(II) ions. Uptake studies showed that other stimuli, such as the temperature and ionic strength of the solutions, also influenced the UO22+ ion uptake capacity of the P(HEMA/IA) hydrogels. (C) 2003 Wiley Periodicals, Inc. [References: 12]
机译：聚（甲基丙烯酸2-羟乙酯/衣康酸）[P（HEMA / IA）]水凝胶是通过水溶液的γ射线辐照制备的。在存在铅和镉离子的情况下，使用非结构化和预结构化方法制备的两种类型的水凝胶系统研究了P（HEMA / IA）水凝胶上UO22 +离子的吸收。通过测量UO22 +，Pb（II）和Cd（II）离子在-200，-410和-580 mV处的还原峰电流，使用差分脉冲极谱技术确定痕量的摄取元素，分别。与常规方法制备的水凝胶相比，用UO22 +离子预结构化的水凝胶吸收的UO22 +离子多出约45％。在Pb（II）和Cd（II）离子存在下，随着衣康酸在水凝胶体系中的百分比增加以及UO22 +离子浓度的增加，水凝胶的UO22 +离子吸收能力会增加。吸收研究表明，其他刺激（例如溶液的温度和离子强度）也影响了P（HEMA / IA）水凝胶的UO22 +离子吸收能力。 （C）2003 Wiley Periodicals，Inc. [参考：12]

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