Abstract—The sorption of copper and lead ions by polymeric sorbents based on crosslinked polyacrylamide containing chemically bound or immobilized 15-crown-5 and 18-crown-6 was studied, as was the effect of various parameters on the efficiency of metal sorption from aqueous solutions. It is shown that the sorption capacity of these sorbents increases dramatically with an increase in the content of crown ethers in them from 3 to 6 wt %. When aging sorbents containing 6 wt % 15-crown-5 or 18-crown-6, in an aqueous solution of copper chloride or lead acetate, respectively, the salt concentration in the solution decreases by 3–4 orders of magnitude. When aging sorbents based on 18-crown-6 in a solution containing equivalent amounts of lead acetate or copper sulfate, the amount of absorbed copper did not exceed 5% of the amount of extracted lead, which indicates the high selectivity of such sorbents.

中文翻译：

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冠醚从水溶液中吸附金属离子

摘要-研究了基于交联聚丙烯酰胺的聚合物吸附剂对铜和铅离子的吸附，该交联聚丙烯酰胺包含化学键合或固定的15-crown-5和18-crown-6，以及各种参数对水溶液中金属吸附效率的影响。结果表明，这些吸附剂的吸附能力随着其中冠醚含量从3 wt％增至6 wt％的增加而急剧增加。当老化的吸附剂分别在氯化铜或乙酸铅的水溶液中含有6 wt％的15-crown-5或18-crown-6时，溶液中的盐浓度降低3-4个数量级。当在含等量乙酸铅或硫酸铜的溶液中老化基于18-crown-6的吸附剂时，吸收的铜量不超过提取的铅量的5％，