Helena Isabel Sousa Passos

pH Effect on the Formation of Deep-Eutectic-Solvent-Based Aqueous Two-Phase Systems

Farias, FO; Passos, H; Coutinho, JAP; Mafra, MR
2018, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 57, 49, 16917-16924.

Designing the thermal behaviour of aqueous biphasic systems composed of ammonium-based zwitterions

Ferreira, AM; Passos, H; Okafuji, A; Freire, MG; Coutinho, JAP; Ohno, H
2017, GREEN CHEMISTRY, 19, 17, 4012-4016.

Alternative probe for the determination of the hydrogen-bond acidity of ionic liquids and their aqueous solutions

Madeira, PP; Passos, H; Gomes, J; Coutinho, JAP; Freire, MG
2017, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 19, 18, 11011-11016.

Is It Possible To Create Ternary-like Aqueous Biphasic Systems with Deep Eutectic Solvents?

Farias, FO; Passos, H; Lima, AS; Mafra, MR; Coutinho, JAP
2017, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 5, 10, 9402-9411.

A Triple Salting-Out Effect is Required for the Formation of Ionic-Liquid-Based Aqueous Multiphase Systems

Passos, H; Costa, SH; Fernandes, AM; Freire, MG; Rogers, RD; Coutinho, JAP
2017, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 56, 47, 15058-15062.

Thermoreversible (Ionic-Liquid-Based) Aqueous Biphasic Systems

Passos, H; Luis, A; Coutinho, JAP; Freire, MG
2016, SCIENTIFIC REPORTS, 6.

Are Aqueous Biphasic Systems Composed of Deep Eutectic Solvents Ternary or Quaternary Systems?

Passos, H; Tavares, DJP; Ferreira, AM; Freire, MG; Coutinho, JAP
2016, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 4, 5, 2881-2886.

Ionic liquids in chromatographic and electrophoretic techniques: toward additional improvements in the separation of natural compounds

Soares, B; Passos, H; Freire, CSR; Coutinho, JAP; Silvestre, AJD; Freire, MG
2016, GREEN CHEMISTRY, 18, 17, 4582-4604.

Why are some cyano-based ionic liquids better glucose solvents than water?

Batista, MLS; Passos, H; Henriques, BJM; Maginn, EJ; Pinho, SP; Freire, MG; Gomes, JRB; Coutinho, JAP
2016, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 18, 28, 18958-18970.

One-step extraction and concentration of estrogens for an adequate monitoring of wastewater using ionic-liquid-based aqueous biphasic systems

Dinis, TBV; Passos, H; Lima, DLD; Esteves, VI; Coutinho, JAP; Freire, MG
2015, GREEN CHEMISTRY, 17, 4, 2570-2579.

Development and characterization of new extraction platforms using ionic-liquid-based aqueous biphasic systems

Helena Passos
2017, supervised by João A. P. Coutinho and Mara G. Freire.

Extraction of bioactive compounds with ionic liquid aqueous solutions

Helena Passos
2012, supervised by João A. P. Coutinho and Mara G. Freire.