论文部分内容阅读
引言 在液-液萃取中,作为一种萃取剂既要保持相当的有机相溶解度,又必须能与水相组份发生作用。因此,有机疏水基团(如各类烷基、苯环或萘环等)保证了有机相溶解度,而一些带极性的基团(如磺酸、羧酸或磷酸等基团)却是形成金属配位键的功能基团。在萃取剂的分子中既存在疏水基团又存在亲水基团,这种两重的性质决定了萃取剂的界面活性,在当前的萃取化学中人们已毫不怀疑萃取剂是一种不同程度的表面活性剂。
INTRODUCTION In liquid-liquid extraction, as an extractant, it is necessary to maintain the equivalent organic phase solubility and to interact with the aqueous phase. Therefore, the organic hydrophobic groups (such as various types of alkyl, benzene or naphthalene ring) to ensure the solubility of the organic phase, and some of the polar groups (such as sulfonic acid, carboxylic acid or phosphoric acid groups) is formed Metal coordination key functional groups. The presence of both hydrophobic and hydrophilic groups in the molecule of the extractant determines the interfacial activity of the extractant and no doubt in the current extraction chemistry that the extractant is a different degree Of the surfactant.