第1族和第2族阳离子在聚乙二醇基双水相体系中的分配行为。
Partitioning behavior of group 1 and 2 cations in poly(ethylene glycol)-based aqueous biphasic systems.
作者信息
Rogers R D, Bauer C B
机构信息
Department of Chemistry, Northern Illinois University, DeKalb, 60115, USA.
出版信息
J Chromatogr B Biomed Appl. 1996 May 17;680(1-2):237-41. doi: 10.1016/0378-4347(95)00319-3.
The partitioning behavior of several Group 1 and 2 cations was investigated in poly(ethylene glycol) (PEG)-based aqueous biphasic systems. All of these metal ions prefer the salt-rich phase over the PEG-rich phase with distribution ratios all well below one regardless of the system investigated. The relative salting-out ability of the individual cations can be directly correlated to their Gibbs free energy of hydration (delta G(hyd)). In addition, the relative magnitude of the distribution ratios for these metal ions can also be explained in terms of delta G(hyd).
研究了几种第1族和第2族阳离子在聚乙二醇（PEG）基双水相体系中的分配行为。所有这些金属离子都更倾向于富含盐的相而非富含PEG的相，无论所研究的体系如何，其分配比均远低于1。单个阳离子的相对盐析能力可直接与其水合吉布斯自由能（ΔG(hyd)）相关联。此外，这些金属离子分配比的相对大小也可用ΔG(hyd)来解释。
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