Abstract

The adsorption and complexing properties of modified adsorbents based on a maleic anhydride–styrene copolymer with respect to thorium(IV) ions were studied. Adsorbents containing fragments of 2‑amino-4-chloro-6-sulfophenol and 2,4-diamino-6-phenyltriazine-1,3,5 are used. The main quantitative characteristics of the adsorption of thorium are determined, and the optimal adsorption conditions are found. The concentration factor is not lower than 200 in extraction from 20 mL of a solution by 30 mg of the adsorbent. The recovery of radioactive thorium exceeds 95%. The developed procedure was applied to determine thorium(IV) in soil contaminated with oil.

中文翻译：

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基于马来酸酐-苯乙烯共聚物的螯合剂对（IV）的浓缩

摘要

研究了基于马来酸酐-苯乙烯共聚物的改性吸附剂对or（IV）离子的吸附和络合特性。使用的吸附剂含有2-氨基-4-氯-6-磺基酚和2,4-二氨基-6-苯基三嗪-1,3,5的片段。确定了or的主要吸附特征，并确定了最佳吸附条件。从20毫升溶液中提取30毫克吸附剂时，浓缩系数不低于200。放射性th的回收率超过95％。所开发的程序用于测定被油污染的土壤中的（。