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https://hdl.handle.net/1822/31485
Título: | Origin of salt additive effect on solute partitioning in aqueous polyethylene glycol-8000–sodium sulfate two-phase system |
Autor(es): | Silva, Nuno R. Ferreira, Luísa A. Mikheeva, Larissa M. Teixeira, J. A. Zaslavsky, Boris Y. |
Palavras-chave: | PEG–sulfate aqueous two-phase systems Salt additives Ionic and non-ionic solutes partitioning Hofmeister series Relative hydrophobicity Electrostatic properties |
Data: | 2014 |
Editora: | Elsevier |
Revista: | Journal of Chromatography A |
Citação: | Silva, Nuno R.; Ferreira, Luisa A.; Mikheeva, Larissa M.; Teixeira, José A.; Zaslavsky, Boris Y., Origin of salt additive effect on solute partitioning in aqueous polyethylene glycol-8000–sodium sulfate two-phase system. Journal of Chromatography A, 1337, 3-8, 2014 |
Resumo(s): | Partitioning of a homologous series of dinitrophenylted (DNP-) amino acids with aliphatic side chains was examined in aqueous polyethylene glycol (PEG)-8000–sodium sulfate two-phase systems (ATPS) with the additives NaSCN, NaClO4, and NaH2PO4 at concentrations varied from 0.025 M up to 0.54 M. The differences between the relative hydrophobicities and electrostatic properties of the two phases in all ATPS were estimated. Partitioning of adenine, adenosine mono-, di- and tri-phosphates was also examined in all ATPSs, including those with NaCl additive. Partition coefficients for these compounds and for nonionic organic compounds previously reported [L.A. Ferreira, P. Parpot, J.A. Teixeira, L.M. Mikheeva, B.Y. Zaslavsky, J. Chromatogr. A 1220 (2012) 14.] were analyzed in terms of linear solvent regression relationship. The results obtained suggest that the effects of the salts additives are related to their influence on the water structure. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/31485 |
DOI: | 10.1016/j.chroma.2014.02.031 |
ISSN: | 0021-9673 |
e-ISSN: | 0021-9673 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
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document_17763_1.pdf | 448,29 kB | Adobe PDF | Ver/Abrir |