Browsing by Author "6dab94d0-9a73-41f4-97b6-f15d11e9d70e"
Now showing items 1-8 of 8
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Building an empirical mass spectra library for screening of organic pollutants by ultra-high-pressure liquid chromatography/hybrid quadrupole time-of-flight mass spectrometry
Hernandez, Felix; Díaz San Pedro, Ramón; Ibáñez, Maria; Sancho, Juan V John Wiley (2011-01-30)Hybrid quadrupole time-of-flight mass spectrometry (QTOF MS) has gained wide acceptance in many fields of chemistry, for example, proteomics, metabolomics and small molecule analysis. This has been due to the numerous ... -
Is NMR-based metabolomic analysis of exhaled breath condensate accurate?
Izquierdo García, J. C; Peces-Barba, Germán; Heili, S; Díaz San Pedro, Ramón; Want, Elizabeth; Ruiz Cabello, Jesús C Official Scientific Journal of the ERS (2011-02)The metabolomic analysis of exhaled breath condensate (EBC) is a simple noninvasive approach for the study of respiratory system diseases. Previous studies introduced nuclear magnetic resonance (NMR)-based metabolomics as ... -
Mass spectrometric characterization of urinary toremifene metabolites for doping control analyses.
Hernandez, Felix; Díaz San Pedro, Ramón; Sancho, Juan V; Gómez, C.; Pozo, Óscar J.; Vilaroca, Enrique; Salvador, Jhon P; Marco, M. P.; Segura, Jordi; Ventura, Rosa © 2011 Elsevier (2011-07)Toremifene is a selective estrogen receptor modulator included in the list of prohibited substances in sport by the World Anti-doping Agency. The aim of the present study was to investigate toremifene metabolism in humans ... -
Qualitative validation of a liquid chromatography-quadrupole-time of flight mass spectrometry screening method for organic pollutants in waters
Díaz San Pedro, Ramón; Ibáñez, Maria; Sancho, Juan V; Hernandez, Felix Elsevier (2013-02)A multiclass wide-scope screening of organic contaminants in natural and waste water has been developed and validated for qualitative purposes, i.e. detection and reliable identification of compounds detected in samples ... -
Rapid wide-scope screening of drugs of abuse, prescription drugs with potential for abuse and their metabolites in influent and effluent urban wastewater by ultrahigh pressure liquid chromatography–quadrupole-time-of-flight-mass spectrometry
Hernandez, Felix; Bijlsma, Lubertus; Sancho, Juan V; Díaz San Pedro, Ramón; Ibáñez, Maria Elsevier (2011-01-17)This work illustrates the potential of hybrid quadrupole-time-of-flight mass spectrometry (QTOF MS) coupled to ultrahigh pressure liquid chromatography (UHPLC) to investigate the presence of drugs of abuse in wastewater. ... -
Target and non-target screening strategies for organic contaminants, residues and illicit substances in food , environmental and human biological samples by UHPLC-QTOF-MS
Hernandez, Felix; Díaz San Pedro, Ramón; Sancho, Juan V; Ibáñez, Maria RSC Publishing (2012-01)In this paper, we illustrate the potential of ultra-high performance liquid chromatography (UHPLC) coupled with hybrid quadrupole time-of-flight mass spectrometry (QTOF MS) for large scale screening of organic contaminants ... -
Told through the wine: A liquid chromatography–mass spectrometry interplatform comparison reveals the influence of the global approach on the final annotated metabolites in non-targeted metabolomics
Díaz San Pedro, Ramón; Gallart-Ayala, Héctor; Sancho, Juan V; Nuñez, Óscar; Zamora, T.; Martins, Claudia P.B.; Hernandez, Felix; Hernández-Cassou, Santiago; Saurina, Javier; Checa, Antonio Elsevier (2016)This work focuses on the influence of the selected LC-HRMS platform on the final annotated compounds in non-targeted metabolomics. Two platforms that differed in columns, mobile phases, gradients, chromatographs, mass ... -
Use of time-of-flight mass spectrometry for large screening of organic pollutants in surface waters and soils from a rice production area in Colombia
Portoles, Tania; Hernandez, Felix; Díaz San Pedro, Ramón; Ibáñez, Maria; Bustos López, Martha Cristina; Botero-Coy, Ana Maria; Fuentes, C. L.; Peñuela, Gustavo Elsevier (2012-11)The irrigate district of Usosaldaña, an important agricultural area in Colombia mainly devoted to rice crop production, is subjected to an intensive use of pesticides. Monitoring these compounds is necessary to know the ...