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  1. Influence of Ligand Functionalization of UiO-66-Based Metal-Organic Frameworks When Used as Sorbents in Dispersive Solid-Phase Analytical Microextraction for Different Aqueous Organic Pollutants

    Article • Molecules, November 2018, MDPI AG

    Professor Juan H Ayala

  2. A guanidinium ionic liquid-based surfactant as an adequate solvent to separate and preconcentrate cadmium and copper in water using in situ dispersive liquid–liquid microextraction

    Article • Analytical Methods, January 2018, Royal Society of Chemistry

    Professor Juan H Ayala

  3. A green metal–organic framework to monitor water contaminants

    Article • RSC Advances, January 2018, Royal Society of Chemistry

    Professor Juan H Ayala

  4. Ionic Liquids in the Microextraction Context

    Article • January 2017, Bentham Science Publishers

    Professor Juan H Ayala

  5. Vacuum-assisted headspace-solid phase microextraction for determining volatile free fatty acids and phenols. Investigations on the effect of pressure on competitive adsorption phenomena in a multicomponent system

    Article • Analytica Chimica Acta, January 2017, Elsevier

    Professor Juan H Ayala

  6. Magnetic ionic liquids as non-conventional extraction solvents for the determination of polycyclic aromatic hydrocarbons

    Article • Analytica Chimica Acta, June 2016, Elsevier

    Professor Juan H Ayala

  7. A magnetic-based dispersive micro-solid-phase extraction method using the metal-organic framework HKUST-1 and ultra-high-performance liquid chromatography with fluorescence detection for determining polycyclic aromatic hydrocarbons in waters and fruit ...

    Article • Journal of Chromatography A, March 2016, Elsevier

    Professor Juan H Ayala

  8. Double salts of ionic-liquid-based surfactants in microextraction: application of their mixed hemimicelles as novel sorbents in magnetic-assisted micro-dispersive solid-phase extraction for the determination of phenols

    Article • Analytical and Bioanalytical Chemistry, September 2015, Springer Science + Business Media

    Professor Juan H Ayala

  9. The metal–organic framework HKUST-1 as efficient sorbent in a vortex-assisted dispersive micro solid-phase extraction of parabens from environmental waters, cosmetic creams, and human urine

    Article • Talanta, July 2015, Elsevier

    Professor Juan H Ayala

  10. A simplified vortex-assisted emulsification microextraction method for determining personal care products in environmental water samples by ultra-high-performance liquid chromatography

    Article • Analytical Methods, January 2015, Royal Society of Chemistry

    Professor Juan H Ayala

  11. Multiple headspace solid-phase microextraction for quantifying volatile free fatty acids in cheeses

    Article • Talanta, November 2014, Elsevier

    Professor Juan H Ayala

  12. Vortex-assisted emulsification microextraction followed by in-syringe ultrasound-assisted back-microextraction to determine haloacetic acids in waters

    Article • Analytical Methods, January 2014, Royal Society of Chemistry

    Professor Juan H Ayala

  13. Utilization of an ionic liquid in situ preconcentration method for the determination of the 15 + 1 European Union polycyclic aromatic hydrocarbons in drinking water and fruit-tea infusions

    Article • Journal of Separation Science, July 2013, Wiley

    Professor Juan H Ayala

  14. An in-situ extraction–preconcentration method using ionic liquid-based surfactants for the determination of organic contaminants contained in marine sediments

    Article • Talanta, September 2012, Elsevier

    Professor Juan H Ayala

  15. A novel preconcentration strategy for extraction methods based on common cationic surfactants: An alternative to classical coacervative extraction

    Article • Journal of Chromatography A, September 2012, Elsevier

    Professor Juan H Ayala

  16. Headspace-single drop microextraction (HS-SDME) in combination with high-performance liquid chromatography (HPLC) to evaluate the content of alkyl- and methoxy-phenolic compounds in biomass smoke

    Article • Talanta, September 2011, Elsevier

    Professor Juan H Ayala

  17. In-situ ionic liquid-dispersive liquid-liquid microextraction method to determine endocrine disrupting phenols in seawaters and industrial effluents

    Article • Microchimica Acta, June 2011, Springer Science + Business Media

    Professor Juan H Ayala

  18. Suitability of ionic liquids as mobile-phase additives in HPLC with fluorescence and UV detection for the determination of heterocyclic aromatic amines

    Article • Journal of Separation Science, January 2010, Wiley

    Professor Juan H Ayala

  19. Ionic liquids as mobile phase additives in high-performance liquid chromatography with electrochemical detection: Application to the determination of heterocyclic aromatic amines in meat-based infant foods

    Article • Talanta, August 2009, Elsevier

    Professor Juan H Ayala

  20. Determination of carbonyl compounds in smoke samples: strategies for sampling and standardization

    Article • Journal of Environmental Monitoring, January 2009, Royal Society of Chemistry

    Professor Juan H Ayala

  21. Ionic liquids as desorption solvents and memory effect suppressors in heterocyclic aromatic amines determination by SPME–HPLC fluorescence

    Article • Analytical and Bioanalytical Chemistry, December 2008, Springer Science + Business Media

    Professor Juan H Ayala

  22. Micelle-mediated extractions using nonionic surfactant mixtures and HPLC-UV to determine endocrine-disrupting phenols in seawaters

    Article • Analytical and Bioanalytical Chemistry, February 2008, Springer Science + Business Media

    Professor Juan H Ayala

  23. The ionic liquid 1-hexadecyl-3-methylimidazolium bromide as novel extracting system for polycyclic aromatic hydrocarbons contained in sediments using focused microwave-assisted extraction

    Article • Journal of Chromatography A, February 2008, Elsevier

    Professor Juan H Ayala

  24. Analytical methods applied to the determination of heterocyclic aromatic amines in foods

    Article • Journal of Chromatography B, February 2008, Elsevier

    Professor Juan H Ayala

  25. Estimation of Uncertainty in the Analysis of Carbonyl Compounds by HPLC‐UV Using DNPH Derivatization

    Article • Journal of Liquid Chromatography &amp Related Technologies, December 2007, Taylor & Francis

    Professor Juan H Ayala

  26. Evaluation of the Uncertainty Associated to the Determination of Heavy Metals in Seawater Using Graphite Furnace Atomic Absorption Spectrometry

    Article • Analytical Letters, December 2007, Taylor & Francis

    Professor Juan H Ayala

  27. Determination of the alkyl- and methoxy-phenolic content in wood extractives by micellar solid-phase microextraction and gas chromatography–mass spectrometry

    Article • Talanta, September 2007, Elsevier

    Professor Juan H Ayala

  28. Monitoring chlorophenols in industrial effluents by solid-phase microextraction–gas chromatography–mass spectrometry

    Article • International Journal of Environmental & Analytical Chemistry, March 2007, Taylor & Francis

    Professor Juan H Ayala

  29. Micellar solid-phase microextraction for determining partition coefficients of substituted polycyclic aromatic hydrocarbons in micellar media: possible prediction of hydrocarbon–micelle behaviour

    Article • Analytical and Bioanalytical Chemistry, January 2007, Springer Science + Business Media

    Professor Juan H Ayala

  30. Focused microwave-assisted micellar extraction combined with solid-phase microextraction—gas chromatography/mass spectrometry to determine chlorophenols in wood samples

    Article • Analytica Chimica Acta, January 2007, Elsevier

    Professor Juan H Ayala

  31. Focused Microwave‐Assisted Extraction and HPLC with Electrochemical Detection to Determine Heterocyclic Amines in Meat Extracts

    Article • Journal of Liquid Chromatography &amp Related Technologies, January 2007, Taylor & Francis

    Professor Juan H Ayala

  32. Determination of less polar heterocyclic amines in meat extracts

    Article • Analytica Chimica Acta, January 2007, Elsevier

    Professor Juan H Ayala

  33. Optimization of an analytical methodology for the determination of alkyl- and methoxy-phenolic compounds by HS-SPME in biomass smoke

    Article • Analytical and Bioanalytical Chemistry, May 2006, Springer Science + Business Media

    Professor Juan H Ayala

  34. Correlations Between Phenols-Micelles Partition Coefficients and Several Molecular Descriptors. An Approach to Predict the Phenols Behaviour in MSPME

    Article • Chromatographia, January 2006, Springer Science + Business Media

    Professor Juan H Ayala

  35. Experimental Design Optimization of Solid‐Phase Microextraction Conditions for the Determination of Heterocyclic Aromatic Amines by High‐Performance Liquid Chromatography

    Article • Analytical Letters, January 2006, Taylor & Francis

    Professor Juan H Ayala

  36. Biosynthesis of Antitumoral and Bactericidal Sanguinarine

    Article • Journal of Biomedicine and Biotechnology, January 2006, Hindawi Publishing Corporation

    Professor Juan H Ayala

  37. Study of the interactions between phenolic compounds and micellar media using micellar solid-phase microextraction/gas chromatography

    Article • Journal of Chromatography A, December 2005, Elsevier

    Professor Juan H Ayala

  38. Emissions of polycyclic aromatic hydrocarbons from combustion of agricultural and sylvicultural debris

    Article • Atmospheric Environment, November 2005, Elsevier

    Professor Juan H Ayala

  39. Coupling micelle-mediated extraction using mixtures of surfactants and fluorescence measurements with a fiber-optic for the screening of PAHs in seawater

    Article • The Analyst, January 2005, Royal Society of Chemistry

    Professor Juan H Ayala

  40. Polycyclic Aromatic Hydrocarbons in Smoke Used to Smoke Cheese Produced by the Combustion of Rock Rose (Cistus monspeliensis) and Tree Heather (Erica arborea) Wood

    Article • Journal of Agricultural and Food Chemistry, January 2005, American Chemical Society (ACS)

    Professor Juan H Ayala

  41. Optimization of a sampling method to determine polycyclic aromatic hydrocarbons in smoke from incomplete biomass combustion

    Article • Analytica Chimica Acta, October 2004, Elsevier

    Professor Juan H Ayala

  42. Solid-Phase Microextraction Coupled to Gas Chromatography/Mass Spectrometry for Determining Polycyclic Aromatic Hydrocarbon−Micelle Partition Coefficients

    Article • Analytical Chemistry, August 2004, American Chemical Society (ACS)

    Professor Juan H Ayala

  43. Nonionic surfactant mixtures: a new cloud-point extraction approach for the determination of PAHs in seawater using HPLC with fluorimetric detection

    Article • Analytica Chimica Acta, August 2004, Elsevier

    Professor Juan H Ayala

  44. Solid-phase microextraction coupled with high-performance liquid chromatography for the analysis of heterocyclic aromatic amines

    Article • Journal of Chromatography A, March 2004, Elsevier

    Professor Juan H Ayala

  45. Micellar microwave-assisted extraction combined with solid-phase microextraction for the determination of polycyclic aromatic hydrocarbons in a certified marine sediment

    Article • Analytica Chimica Acta, January 2003, Elsevier

    Professor Juan H Ayala

  46. DETERMINATION OF N-NITROSODIMETHYLAMINE BY HPLC, WITH FLUORESCENCE DETECTION. A SURVEY OF N-NITROSODIMETHYLAMINE IN COMMERCIAL BEERS

    Article • Journal of Liquid Chromatography &amp Related Technologies, May 2002, Taylor & Francis

    Professor Juan H Ayala

  47. Determination of polycyclic aromatic hydrocarbons in seawater by high-performance liquid chromatography with fluorescence detection following micelle-mediated preconcentration

    Article • Journal of Chromatography A, March 2002, Elsevier

    Professor Juan H Ayala

  48. Fast microwave-assisted dansylation of N-nitrosamines

    Article • Journal of Chromatography A, February 2002, Elsevier

    Professor Juan H Ayala

  49. Cloud-point preconcentration and HPLC determination of polycyclic aromatic hydrocarbons in marine sediments

    Article • Analytical and Bioanalytical Chemistry, September 2001, Springer Science + Business Media

    Professor Juan H Ayala

  50. Ultrasonic micellar extraction of polycyclic aromatic hydrocarbons from marine sediments

    Article • Talanta, March 2001, Elsevier

    Dr Juan A Ayala, Professor Juan H Ayala

  51. NON-LINEAR CALIBRATION IN QUANTITATIVE ANALYSIS BY HPTLC UTILIZING A FIBRE OPTIC FLUORESCENCE DETECTOR

    Article • Journal of Liquid Chromatography &amp Related Technologies, October 2000, Taylor & Francis

    Professor Juan H Ayala

  52. Determination of polycyclic aromatic hydrocarbons in marine sediments by high-performance liquid chromatography after microwave-assisted extraction with micellar media

    Article • Journal of Chromatography A, February 2000, Elsevier

    Professor Juan H Ayala

  53. Rapid microwave-assisted dansylation of biogenic amines

    Article • Journal of Chromatography A, May 1998, Elsevier

    Professor Juan H Ayala

  54. Effect of non-ionic surfactants as mobile phase additives on the fluorescence intensity of dansyl derivatives of biogenic amines in high-performance thin-layer chromatography

    Article • The Analyst, January 1998, Royal Society of Chemistry

    Professor Juan H Ayala

  55. Effects of cetylpyridinium bromide micelles on the spectrofluorimetric characteristics of polycyclic aromatic hydrocarbons

    Article • Talanta, February 1997, Elsevier

    Professor Juan H Ayala

  56. Effects of cationic micelles on fluorescence of indole and indolecarboxylic acids. Analytical determinations

    Article • Microchimica Acta, September 1995, Springer Science + Business Media

    Professor Juan H Ayala

  57. Degradation of carbaryl in natural waters: Enhanced hydrolysis rate in micellar solution

    Article • Bulletin of Environmental Contamination and Toxicology, February 1992, Springer Science + Business Media

    Professor Juan H Ayala

  58. Spectrofluorimetric determination of carbaryl and 1-naphthol in micellar media

    Article • Microchimica Acta, May 1991, Springer Science + Business Media

    Professor Juan H Ayala