Solvent extraction of Eu(III) and Nd(III) from aqueous medium was investigated by sulfasalazine in benzoyl alcohol as single extractant and then with synergic mixture of sulfasalazine and 1,10-phenanthroline in benzyl alcohol. The synergic mixture was found to extract studied rare earth elements with higher distribution coefficients. All cations studied have shown negligible effect on the extraction, whereas citrate and oxalate interfered seriously. The stoichiometric composition of extracted species was found to be M (SS) 2 .HSS.X and [M(SS) 3 .2phen] where M = Eu(III) and Nd(III). The extraction mechanism is also discussed. The extractant has high loading as well as recycling capacity without any degradation.

中文翻译：

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使用柳氮磺吡啶和 1,10-菲咯啉的混合物从水性介质中协同萃取 Eu(III) 和 Nd(III)

用柳氮磺吡啶在苯甲酰醇中作为单一萃取剂，然后用柳氮磺吡啶和 1,10-菲咯啉在苯甲醇中的协同混合物研究了从水性介质中溶剂萃取 Eu(III) 和 Nd(III)。发现协同混合物提取具有较高分配系数的研究稀土元素。所研究的所有阳离子对萃取的影响都可以忽略不计，而柠檬酸盐和草酸盐会严重干扰。发现提取物的化学计量组成为 M (SS) 2 .HSS.X 和 [M(SS) 3 .2phen]，其中 M = Eu(III) 和 Nd(III)。还讨论了提取机制。该萃取剂具有高负载量和回收能力，不会发生任何降解。