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139 results on '"Alberto Navalón"'

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1. Presence of parabens in children's faeces. Optimization and validation of a new analytical method based on the use of ultrasound-assisted extraction and liquid chromatography-tandem mass spectrometry

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4. Determination of ultraviolet filters in human nails using an acid sample digestion followed by ultra-high performance liquid chromatography-mass spectrometry analysis

5. Assessment of parabens and ultraviolet filters in human placenta tissue by ultrasound-assisted extraction and ultra-high performance liquid chromatography-tandem mass spectrometry

6. Validated method for the determination of perfluorinated compounds in placental tissue samples based on a simple extraction procedure followed by ultra-high performance liquid chromatography–tandem mass spectrometry analysis

7. Simultaneous determination of quinolone and β-lactam residues in raw cow milk samples using ultrasound-assisted extraction and dispersive-SPE prior to UHPLC−MS/MS analysis

8. Determination of endocrine disrupting chemicals in human nails using an alkaline digestion prior to ultra-high performance liquid chromatography–tandem mass spectrometry

9. Analysis of 17 neurotransmitters, metabolites and precursors in zebrafish through the life cycle using ultrahigh performance liquid chromatography–tandem mass spectrometry

10. Analytical methods for the assessment of endocrine disrupting chemical exposure during human fetal and lactation stages: A review

11. Determination of quinolone residues in raw cow milk. Application of polar stir-bars and ultra-high performance liquid chromatography-tandem mass spectrometry

12. Matrix solid phase dispersion for the extraction of selected endocrine disrupting chemicals from human placental tissue prior to UHPLC-MS/MS analysis

13. Development of a New Microextraction Fiber Combined to On-Line Sample Stacking Capillary Electrophoresis UV Detection for Acidic Drugs Determination in Real Water Samples

14. Seasonal Variations in the Behavior of Alcohol Sulfates in Agricultural Soils: a Field Study

15. A multiresidue method for the determination of selected endocrine disrupting chemicals in human breast milk based on a simple extraction procedure

16. Analytical methods for the determination of personal care products in human samples: An overview

17. Stir-membrane solid–liquid–liquid microextraction for the determination of parabens in human breast milk samples by ultra high performance liquid chromatography-tandem mass spectrometry

18. UHPLC–MS/MS method for the determination of bisphenol A and its chlorinated derivatives, bisphenol S, parabens, and benzophenones in human urine samples

19. A new method for the determination of benzophenone-UV filters in human serum samples by dispersive liquid–liquid microextraction with liquid chromatography–tandem mass spectrometry

20. Sorption and desorption of alcohol sulfate surfactants in an agricultural soil

21. Ultra high performance liquid chromatography–tandem mass spectrometry method for the determination of soluble milk glycans in rat serum

22. A new treatment by dispersive liquid–liquid microextraction for the determination of parabens in human serum samples

23. Removal and degradation characteristics of quinolone antibiotics in laboratory-scale activated sludge reactors under aerobic, nitrifying and anoxic conditions

24. Analysis of quinolone antibiotic derivatives in sewage sludge samples by liquid chromatography–tandem mass spectrometry: Comparison of the efficiency of three extraction techniques

25. Determination of alcohol sulfates and alcohol ethoxysulfates in wastewater samples by liquid chromatography tandem mass spectrometry

26. Simultaneous determination of 13 quinolone antibiotic derivatives in wastewater samples using solid‐phase extraction and ultra performance liquid chromatography–tandem mass spectrometry

27. Biomonitoring of 21 endocrine disrupting chemicals in human hair samples using ultra-high performance liquid chromatography-tandem mass spectrometry

28. Polar stir bars for isolation and preconcentration of perfluoroalkyl substances from human milk samples prior to UHPLC-MS/MS analysis

29. Improved sample treatment for the determination of bisphenol A and its chlorinated derivatives in sewage sludge samples by pressurized liquid extraction and liquid chromatography–tandem mass spectrometry

30. Analysis of bisphenol A and its chlorinated derivatives in sewage sludge samples. Comparison of the efficiency of three extraction techniques

31. Determination of alcohol sulfates in wastewater treatment plant influents and effluents by gas chromatography-mass spectrometry

32. Determination of benzophenones in human placental tissue samples by liquid chromatography–tandem mass spectrometry

33. UNE-EN ISO/IEC 17025:2005 accredited method for the determination of 121 pesticide residues in fruits and vegetables by gas chromatography–tandem mass spectrometry

34. Determination of Vecuronium Bromide in Pharmaceuticals: Development, Validation and Comparative Study of HPLC and CZE Analytical Methods

35. Matrix effect study in the determination of linear alkylbenzene sulfonates in sewage sludge samples

36. Determination of Bisphenol A and its chlorinated derivatives in placental tissue samples by liquid chromatography–tandem mass spectrometry

37. UNE-EN ISO/IEC 17025:2005-accredited method for the determination of pesticide residues in fruit and vegetable samples by LC-MS/MS

38. Determination of insoluble soap in agricultural soil and sewage sludge samples by liquid chromatography with ultraviolet detection

39. Improved sample treatment for the determination of insoluble soap in sewage sludge samples by liquid chromatography with fluorescence detection

40. New sample treatment for the determination of alkylphenols and alkylphenol ethoxylates in agricultural soils

41. Characterization of sepia ink in ancient graphic documents by capillary electrophoresis

43. Simultaneous determination of quinolone antibacterials in bovine milk by liquid chromatography-mass spectrometry

44. Determination of Sulfophenyl Carboxylic Acids in Agricultural Groundwater Samples by Liquid Chromatography with Fluorescence Detection

45. Gas chromatographic–mass spectrometric study of the degradation of phenolic compounds in wastewater olive oil by Azotobacter Chroococcum

46. Determination of some endocrine disrupter chemicals in urban wastewater samples using liquid chromatography–mass spectrometry

47. Determination of sulfophenyl carboxylic acids in agricultural groundwater samples by CE with ultraviolet absorption detection

48. Multiresidue method for simultaneous determination of quinolone antibacterials in pig kidney samples by liquid chromatography with fluorescence detection

49. Differentiation of Green, White, Black, Oolong, and Pu-erh Teas According to Their Free Amino Acids Content

50. Characterization of aniseed-flavoured spirit drinks by headspace solid-phase microextraction gas chromatography–mass spectrometry and chemometrics