RESEARCH AREAS

equilibrium and spectroscopic data treatment

The main topics covered in this research line include the study of ionic equilibrium using several techniques (potentiometry, absorption and fluorescence spectrometry, liquid chromatography and capillary electrophoresis), applied to different equilibrium systems in:

 

  • aqueous and non-aqueous media
  • micellar media
  • liquid-liquid extraction
  • liquid-solid partition

In some cases, new operational procedures and software needed for the proper data treatment have been developed within this research line.
On the other hand, some chemometric procedures have been applied for the prediction of drug properties (PLS) and the characterization of dissolved organic matter in water by Excitation-Emission Fluorescent spectrometry (PARAFAC).

PUBLICATIONS

PAPERS

2024

  • Reclamation of impacted urban phreatic water through nanofiltration technology: Insight on natural organic matter removal by fluorescence spectroscopy
    M. Abenza, J. López, J.L. Beltrán, J.L. Cortina, J. de Pablo, E. Vázquez-Suñé, O. Gibert,
    Journal of Environmental Chemical Engineering 12 (2024) 111848
    https://doi.org/10.1016/j.jece.2023.111848

2020-2021

  • Evaluation of the Interactions between Human Serum Albumin (HSA) and Non-Steroidal Anti-Inflammatory (NSAIDs) Drugs by Multiwavelength Molecular Fluorescence, Structural and Computational Analysis.
    S. Amézqueta, J.L. Beltrán, A.M. Bolioli, Ll. Campos-Vicens, F.J. Luque, C. Ràfols
    Pharmaceuticals 14 (2021) 214.
    https://doi.org/10.3390/ph14030214
  • A Highly Stable Metal−Organic Framework-Engineered FeS2/C Nanocatalyst for Heterogeneous Electro-Fenton Treatment: Validation in Wastewater at Mild pH.
    Z. Ye, J.A. Padilla, E. Xuriguera, J.L. Beltran, F. Alcaide, E. Brillas, I. Sirés
    Environmental Science & Technology, 54 (2020) 4664−4674
    https://doi.org/10.1021/acs.est.9b07604

2015-2019

  • Ionic equilibria in aqueous organic solvent mixtures. Speciation of hydrofluoric acid in several ethanol/water solutions.
    C. Ràfols, J.L. Beltrán, M. Rosés, E. Bosch,
    Journal of Electroanalytical Chemistry, 848 (2019)113318
    https://doi.org/10.1016/j.jelechem.2019.113318

  • Evaluation of the interactions between human serum albumin (HSA) and warfarin or diflunisal by using molecular fluorescence using two approaches
    S. Amézqueta, A.M. Bolioli, J.L. Beltrán, C. Ràfols
    ADMET & DMPK 6 (2018) 47-54
    http://dx.doi.org/10.5599/admet.6.1.473

  • Monitoring UF membrane performance treating surface-groundwater blends: Limitations of FEEM-PARAFAC on the assessment of the organic matter role.
    M. Vera, J. Martín-Alonso, J. Mesa, M. Granados, J.L. Beltran, S. Casas, O. Gibert, J.L. Cortina
    Chemical Engineering Journal, 317 (2017) 961-971
    https://doi.org/10.1016/j.cej.2017.02.081

  • ISOT_Calc: A versatile tool for parameter estimation in sorption isotherms.
    J. L. Beltrán, J.J. Pignatello, M. Teixidó,
    Computers & Geosciences, 94 (2016) 11-17,
    https://doi.org/10.1016/j.cageo.2016.04.008

  • Dissociation Constants and Octanol–Water Partition Equilibria for Several Fluoroquinolones
    G.M. Cárdenas-Youngs, J.L. Beltrán
    Journal of Chemical & Engineering Data, 60 ( 2015) 3327-3332
    https://doi.org/10.1021/acs.jced.5b00556

2010-2014

  • Sorption of Enrofloxacin and Ciprofloxacin in Agricultural Soils: Effect of Organic Matter.
    M. Teixidó, J. Medeiros, J.L. Beltrán, M.D. Prat, M. Granados
    Adsorption Science & Technology, 32 (2014) 153-163
    https://doi.org/10.1260/0263-6174.32.2-3.153

  • Predicting Contaminant Adsorption in Black Carbon (Biochar)-Amended Soil for the Veterinary Antimicrobial Sulfamethazine.
    M. Teixidó, C. Hurtado, J. J. Pignatello, J.L. Beltrán, M. Granados, J. Peccia
    Environmental Science & Technology 47 (2013) 6197-6205
    https://doi.org/10.1021/es400911c

  • Sorption of tetracyclines onto natural soils: data analysis and prediction.
    M. Teixidó, M. Granados, M.D. Prat, M.D, J. L. Beltrán
    Environmental Science and Pollution Research 19 (2012) 3087–3095.
    https://doi.org/10.1007/s11356-012-0954-5

  • Speciation of the Ionizable Antibiotic Sulfamethazine on Black Carbon (Biochar)
    M. Teixidó, J.J. Pignatello, J.L. Beltrán, M. Granados, J. Peccia
    Environmental Science & Technology, 45 ( 2011) 10020-10027
    https://doi.org/10.1021/es202487h

REPRESENTATIVE EARLIER PAPERS

  • Determination of pKa values of some hydroxylated benzoic acids in methanol–water binary mixtures by LC methodology and potentiometry.
    F.Z. Erdemgil, S. Şanli, N. Şanli, G. Özkan, J. Barbosa, J. Guiteras, J.L. Beltrán
    Talanta, 72 (2007) 489-496,
    https://doi.org/10.1016/j.talanta.2006.11.007

  • Modelling retention in liquid chromatography of polyphenolic acids: Prediction of solvent composition and pH of the mobile phase.
    N. Sanli, G. Fonrodona, J. Barbosa, G.A. Özkan, J.L. Beltran,
    Analytica Chimica Acta, 537 (2005) 53-61,
    https://doi.org/10.1016/j.aca.2005.01.006

  • Spectrophotometric, potentiometric and chromatographic pKa values of polyphenolic acids in water and acetonitrile–water media.
    J.L. Beltrán, N. Sanli, G. Fonrodona, D. Barrón, G. Özkan, J. Barbosa
    Analytica Chimica Acta, 484 (2003) 253-264,
    https://doi.org/10.1016/S0003-2670(03)00334-9

  • Determination of the dissociation constants of sulfonated azo dyes by capillary zone electrophoresis and spectrophotometry methods.
    M Pérez-Urquiza, J.L Beltrán
    Journal of Chromatography A, 917 (2001) 331-336,
    https://doi.org/10.1016/S0021-9673(01)00707-5

  • Study on partition equilibria of metal complexes in non-ionic micellar solutions from spectrophotometric data.
    R. Codony, M.D. Prat, J.L. Beltrán
    Talanta, 52 (2000) 225-232,
    https://doi.org/10.1016/S0039-9140(00)00318-0

  • Three-Way Multivariate Calibration Procedures Applied To High-Performance Liquid Chromatography Coupled with Fast-Scanning Fluorescence Spectrometry Detection. Determination of Polycyclic Aromatic Hydrocarbons in Water Samples
    J. L. Beltrán, J. Guiteras, R. Ferrer
    Analytical Chemistry, 70 (1998) 1949-1955
    https://doi.org/10.1021/ac970939b

  • Multivariate calibration of polycyclic aromatic hydrocarbon mixtures from excitation–emission fluorescence spectra.
    J.L. Beltrán, R. Ferrer, J. Guiteras
    Analytica Chimica Acta, 373 (1998) 311-319,
    https://doi.org/10.1016/S0003-2670(98)00420-6

  • Development of fast-scanning fluorescence spectra as a detection system for high-performance liquid chromatography. Determination of polycyclic aromatic hydrocarbons in water samples.
    R. Ferrer, J. Guiteras, J.L. Beltrán
    Journal of Chromatography A, 779 (1997) 123-130,
    https://doi.org/10.1016/S0021-9673(97)00410-X

  • PKPOT, a program for the potentiometric study of ionic equilibria in aqueous and non-aqueous media
    J. Barbosa, D. Barrón, J.L. Beltrán, V. Sanz-Nebot
    Analytica Chimica Acta, 317 (1995) 75-81,
    https://doi.org/10.1016/0003-2670(95)00400-9

  • Evaluation of stability constants from multi-wavelength absorbance data: program STAR.
    J.L. Beltrán, R. Codony, M.D. Prat
    Analytica Chimica Acta, 276 (1993) 441-454,
    https://doi.org/10.1016/0003-2670(93)80415-H