RT info:eu-repo/semantics/article
T1 Partitioning of DNP-Amino Acids in New Biodegradable Choline Amino Acid/Ionic Liquid-Based Aqueous Two-Phase Systems
A1 Requejo, Patricia F.
A1 Gómez, Elena
A1 Macedo, Eugénia A.
K1 ATPS
K1 Ionic liquid
K1 NRTL model
K1 DNP-amino acids
AB In this work, the partitioning of four N-(2,4- dinitrophenyl)-amino acids (DNP-L-leucine, DNP-L-valine, DNP-L-alanine, and DNP-glycine) in aqueous two-phase systems (ATPS) containing a new biodegradable ionic liquid cholinium alaninate, [Ch][Ala], and the inorganic salts K3PO4 and K2HPO4 was determined at T = 298.15 K and p = 101.3 kPa. The influence of the salt on the partition coefficients was discussed. The distribution coefficients (K) of the four studied DNP-amino acids are higher in the ATPS containing the inorganic salt K3PO4. Moreover, the experimental LLE data obtained for both ATPS {[Ch][Ala] (1) + K3PO4 or K2HPO4 (2) + water (3)} (previously reported) were represented using the nonrandom two-liquid thermodynamic model. Finally, a comparison of the distribution coefficients presented in this work and those found in literature for the four studied DNP-amino acids on different ATPS was performed.
PB American Chemical Society
SN 0021-9568
YR 2019
FD 2019
LK https://uvadoc.uva.es/handle/10324/65634
UL https://uvadoc.uva.es/handle/10324/65634
LA eng
NO Journal of Chemical & Engineering Data 2019, vol. 64, p. 4733-4740
NO Producción Científica
DS UVaDOC
RD 22-nov-2024