Studies on the sorption of rare-earth metals, uranium, and thorium from nitric acid solutions on different phosphor-containing solid extragents produced by the Russian ZAO Axion-RDM are performed. It is demonstrated that effective extraction of REM on phosphor-containing solid extragents is possible from solutions with HNO₃ concentration up to 0.1 M and extraction of uranium and thorium from solutions of up to 6 M.

中文翻译：

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俄罗斯制造的含磷固体萃取剂对稀土金属、铀和钍的吸附

研究了俄罗斯ZAO Axion-RDM生产的不同含磷固体萃取剂对硝酸溶液中稀土金属、铀和钍的吸附作用。结果表明，含磷固体萃取剂可以从 HNO ₃浓度高达 0.1 M 的溶液中有效萃取 REM，并可以从浓度高达 6 M 的溶液中萃取铀和钍。