Effect of molecular weight of polyethylene glycol on the partitioning of DNP-amino acids: PEG (4000, 6000) with sodium citrate at 298.15 K
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- 作者：Kamila Wysoczanska ; Eugé ; nia A. Macedo ; eamacedo@fe.up.pt" class="auth_mail" title="E-mail the corresponding author
- 关键词：ATPS ; Phase diagrams ; DNP-amino acids ; Citrate salts ; PEG
- 刊名：Fluid Phase Equilibria
- 出版年：2016
- 出版时间：25 November 2016
- 年：2016
- 卷：428
- 期：Complete
- 页码：84-91
- 全文大小：981 K
文摘
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Binodal curves and tie-lines were determined for two different PEG-sodium citrate ATPSs, at T = 298.15 K.
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Merchuk equation was applied for the binodal curve fitting.
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New partition coefficients for four DNP-amino acids were measured, at T = 298.15 K.
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The relative hydrophobicity of the conjugated phases was calculated and considered in terms of the Gibbs energy of transfer of a methylene group.
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The influence of the PEG molecular weight on the phase formation and solute partitioning was discussed.