Polyethylene glycol 8000+ citrate salts aqueous two-phase systems: Relative hydrophobicity of the equilibrium phases

This work was partially supported by FCT/MEC and FEDER under Programe PT2020 (Project UID/EQU/50020/2013), and co-financed by QREN, ON2 and FEDER (Projects NORTE-07-0162FEDER-000050 and NORTE-07-0124-FEDER-0000011), for which the authors are thankful. SCS alsoa cknowledges her post-doc grant (SFRH/BPD/88584/2012) from FCT.

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