In the present work, N-acetylcysteine attached poly(acrylamide-co-methyl methacrylate) [poly(AAm-MMA)] cryogels were synthesized and used for removal of heavy metal ions (Zn(II), Cd(II) and Pb(II)). For this, poly(AAm-MMA) cryogels were synthesized by free radical cryopolymerization technique and then, modified by N-acetylcysteine. Synthesized cryogel was characterized by FTIR, SEM and EDX analyses. Removed amounts of heavy metal were demonstrated by stripping voltammetry and the heavy metal removal efficiency was found to be 98.33 for Zn(II), 90.74 for Cd(II) and 96.19% for Pb(II). Additionally, this newly synthesized cryogel was successfully used for removal of heavy metals from environmental and biological media.

中文翻译：

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N-乙酰半胱氨酸功能化冷冻凝胶去除重金属

在目前的工作中，N-乙酰半胱氨酸连接的聚（丙烯酰胺-共聚甲基丙烯酸甲酯）[聚（AAm-MMA）]冷冻凝胶被合成并用于去除重金属离子（Zn（II），Cd（II）和Pb（ II))。为此，聚（AAm-MMA）冷冻凝胶通过自由基低温聚合技术合成，然后用 N-乙酰半胱氨酸改性。合成的冷冻凝胶通过 FTIR、SEM 和 EDX 分析进行表征。通过溶出伏安法证实了重金属的去除量，发现重金属去除效率对 Zn(II) 为 98.33，对 Cd(II) 为 90.74，对 Pb(II) 为 96.19%。此外，这种新合成的冷冻凝胶已成功用于从环境和生物介质中去除重金属。