【摘要】 合成了９种烷硫基烷基二烷基膦酸酯（Ｒ＇Ｏ）＿２Ｐ（Ｏ）（ＣＨ＿２）＿ｎＳＲ″，研究了它们从盐酸和硝酸溶液中对几种软、硬酸金属离子的萃取及取代基对萃取性能的影响。结果表明，这类萃取剂对软酸和硬酸金属离子如Ｐｄ（Ⅱ）和Ｕ（Ⅵ）均有良好的萃取能力，而对交界酸金属离子如Ｒｈ（Ⅲ）、Ｃｄ（Ⅱ）等几乎不萃取。萃取剂分子中，烷撑基（（ＣＨ＿２）＿ｎ）中的碳原子数ｎ是影响其萃取能力的主要因素，而取代基Ｒ＇和Ｒ″的大小，对其萃取能力的影响较小。更多还原

【Abstract】 The nine products of diakyl-N,N-alkylsu1fidonakyl phonates,（R’O）₂P（O）（CH₂）_n,SR″,have been synthesized and investigated on extractability for various hard and soft metal ions fromHCl and HNO₃ acid.The effect of substituting groups of extractant molecules are all studied. Theresults show that some soft and hard metal ions,e.g. Pd（Ⅱ）and U（Ⅵ） , could be extractedeffectively,but for borderline metal ions,e.g. Rh（Ⅲ）,couldn’t be extracted.The primary factordetermining the extractability of these extractants is the number of carbon ions in alkyl group （CH₂）_n ,the substitution of R’and R″is only a less important factor.更多还原