Laboratory of Separation and Reaction Engineering, Departamento de Engenharia Química, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal.
J Phys Chem B. 2010 Jan 14;114(1):457-62. doi: 10.1021/jp907346s.
The solvatochromic solvent parameters characterizing the solvent polarity (pi*), solvent hydrogen-bond donor acidity (alpha), and solvent hydrogen-bond acceptor basicity (beta) of aqueous media were measured in the coexisting phases of nine different aqueous polymer/polymer two-phase systems (ATPS), containing 0.15 M NaCl in 0.01 M phosphate buffer, pH 7.4. Partitioning coefficients of six neutral compounds were measured in the nine ATPS at particular polymer concentrations. The solvatochromic equation was used to describe the partitioning of each compound. Three descriptors of the solvent properties of the phases could describe adequately the partitioning of the solutes in all the ATPS employed.
测定了 9 种不同的含 0.15 M NaCl 的磷酸盐缓冲盐水（pH 值 7.4）双水相体系中同时存在的相间的溶剂极性（pi*）、溶剂给质子能力（alpha）和溶剂接受质子能力（beta）等溶剂参数。在特定的聚合物浓度下，测定了这 9 种双水相体系中 6 种中性化合物的分配系数。用溶剂化显色方程描述了各化合物的分配情况。可以用 3 个相溶剂性质的描述符来充分描述所有使用的双水相体系中溶质的分配情况。
