Influence of the temperature and type of salt on the phase equilibrium of peg 1500 + potassium phosphate and peg 1500 + sodium citrate aqueous two-phase systems
Carolina P. Carvalho, Jane Sélia R. Coimbra, Isabele Andressa F. Costa and 3 more
Química Nova · 2008
doi:10.1590/s0100-40422008000200004 (opens in a new tab)
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Abstract
The present work analyzed the effect of the temperature and type of salt on the phase equilibrium of aqueous two-phase systems (ATPS) formed by poly (ethylene glycol) (PEG) 1500 + potassium phosphate, from (278.15 to 318.15) K, and PEG 1500 + sodium citrate, from (278.15 to 298.15) K. The rise of the temperature normally increased the slope of the tie line (STL). With respect to the influence of the type of salt, sodium citrate showed better capability to induce phase separation, when compared to potassium phosphate.
Abstract licence: CC BY-NC
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