Listar IUPA_Articles por autoría "e919460c-c920-4a17-b3f9-f35c38aa3a53"
Mostrando ítems 1-17 de 17
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Comparison of approaches to deal with matrix effects in LC-MS/MS based determinations of mycotoxins in food and feed
Fabregat-Cabello, Neus; Zomer, P.; Sancho, Juan V; Roig-Navarro, Antoni F.; Mol, Johannes G. J. © 2015 Wageningen Academic Publishers (2016-03)This study deals with one of the major concerns in mycotoxin determinations: the matrix effect related to LC-MS/ MS systems with electrospray ionization sources. To this end, in a first approach, the matrix effect has been ... -
Comparison of isotope pattern deconvolution and calibration curve quantification methods for the determination of estrone and 17β-estradiol in human serum
Pitarch-Motellón, Jorge; Fabregat-Cabello, Neus; Le Goff, C.; Roig-Navarro, Antoni F.; Sancho, Juan V; Cavalier, E. Elsevier (2019-04)A Liquid Chromatography coupled to tandem mass spectrometry (LC–MS/MS) based method have been developed for the determination of the main estrogen compounds –estrone (E1) and 17β-estradiol (E2)– in human serum. Two isotope ... -
Determination of selected endogenous anabolic androgenic steroids and ratios in urine by ultra high performance liquid chromatography tandem mass spectrometry and isotope pattern deconvolution
Pitarch-Motellón, Jorge; Sancho, Juan V; Ibáñez, Maria; Pozo, Óscar J.; Roig-Navarro, Antoni F. Elsevier (2017-09)An isotope dilution mass spectrometry (IDMS) method for the determination of selected endogenous anabolic androgenic steroids (EAAS) in urine by UHPLC–MS/MS has been developed using the isotope pattern deconvolution (IPD) ... -
Development and validation of a liquid chromatography isotope dilution mass spectrometry method for the reliable quantificationof alkylphenols in environmental water samples by isotopepattern deconvolution
Fabregat-Cabello, Neus; Sancho, Juan V; Vidal-Albalat, Andreu; González, Florenci; Roig-Navarro, Antoni F. Copyright © 2015 Elsevier (2014-02-07)We present here a new measurement method for the rapid extraction and accurate quantification of technical nonylphenol (NP) and 4-t-octylphenol (OP) in complex matrix water samples by UHPLC-ESI-MS/MS. The extraction of ... -
Electrochemical oxidation of dibenzothiophene compounds on BDD electrode in acetonitrile–water medium
Ornelas Dávila, Omar; Lacalle-Bergeron, Leticia; Ruiz Gutiérrez, P.; Dávila-Jiménez, Martín M.; Sirés Sadornil, Ignacio; Brillas, Enric; Roig-Navarro, Antoni F.; Beltran Arandes, Joaquin; Sancho, Juan V Elsevier (2019-05-23)The electrochemical oxidation of dibenzothiophene and two derivatives, namely 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene, was investigated either separately or as a mixture, on a BDD anode in a miscible ... -
Electrochemical oxidation of meglumine in a pharmaceutical formulation using a nanocomposite anode
Lozano Gutiérrez, G. I.; Ornelas Dávila, Omar; López Aguilar, C.; Dávila-Jiménez, Martín M.; Silva-González, Rutilo; Sirés Sadornil, Ignacio; Fabregat-Safont, David; Roig-Navarro, Antoni F.; Beltran Arandes, Joaquin; Sancho Llopis, Juan Vicente Elsevier (2022-10-30)The electrocatalytic oxidation of meglumine and gadoterate meglumine (Gd-DOTA) on a TiO2-Ni(SO4)0.3(OH)1.4 composite anode was investigated in alkaline medium (5 M KOH) using cyclic voltammetry and chronoamperometry. The ... -
Electrochromic behavior of Prussian Yellow
Agrisuelas, Jerónimo; Delgado, C.; García-Jareño, J.J.; Moreno-Guerrero, C.; Roig-Navarro, Antoni F.; Vicente, F. Electrochemical Society (2013)Prussian Blue films were studied by in situ electrogravimetric and spectroelectrochemical methods during the electrochemical oxidation to the Prussian Yellow form. Spectroelectrochemical studies detected important ... -
Evaluation of uncertainty sources in the determination of testosterone in urine by calibration-based and isotope dilution quantification using ultra high performance liquid chromatography tandem mass spectrometry
Pitarch-Motellón, Jorge; Roig-Navarro, Antoni F.; Sancho, Juan V; Ibáñez, Maria; Fabregat-Cabello, Neus; Pozo, Óscar J.; Ventura, Rosa; García Alonso, J. Ignacio; Rodríguez González, Pablo; González Gago, Adriana; Ereño Artabe, Amaia; Van Eenoo, Peter; Deventer, Koen; Dehnes, Yvette; Rzeppa, Sebastian Elsevier (2017-06)Three quantification methodologies, namely calibration with internal standard (Cal-IS, non-weighted), weighted calibration with internal standard (wCal-IS) and isotope pattern deconvolution (IPD) have been used for the ... -
Fast and Accurate Procedure for the Determination of Cr(VI) in Solid Samples by Isotope Dilution Mass Spectrometry
Fabregat-Cabello, Neus; Rodríguez González, Pablo; Castillo Tirado, Ángel; Malherbe, Julien; Roig-Navarro, Antoni F.; Long, Stephen E.; García Alonso, J. Ignacio American Chemical Society (2012)We present here a new environmental measurement method for the rapid extraction and accurate quantification of Cr(VI) in solid samples. The quantitative extraction of Cr(VI) is achieved in 10 minutes by means of focused ... -
Identification of electroactive sites in Prussian Yellow films
Agrisuelas, Jerónimo; García-Jareño, J.J.; Moreno-Guerrero, C.; Roig-Navarro, Antoni F.; Vicente, F. Elsevier (2013)Prussian Blue films were electrogenerated on the surface of the transparent ITO electrodes. The electrochemical oxidation to the Prussian Yellow form was investigated by means of in situ voltammetry and vis–NIR spectroscopic ... -
Interfacial role of Cesium in Prussian Blue Films
Catalán, R.; Agrisuelas, Jerónimo; Cuenca, A.; García-Jareño, J.J.; Roig-Navarro, Antoni F.; Vicente, F. ECS (2015)The simultaneous measurement of current, mass, motional resistance and absorbance magnitudes allows the electrochemical cation insertion process to be explained during successive voltammograms around the Prussian Blue ⇄ ... -
Isotope Dilution LC-ESI-MS/MS and low resolution Selected Reaction Monitoring as a tool for the accurate quantification of urinary testosterone
Ereño Artabe, Amaia; Gonzalez-Gago, Adriana; Suarez Fernández, Amanda; Pitarch-Motellón, Jorge; Roig-Navarro, Antoni F.; Pozo, Óscar J.; Rodríguez González, Pablo; García Alonso, J. Ignacio Elsevier (2018-09)A new analytical method for the quantification of testosterone in human urine samples by isotope dilution mass spectrometry is proposed. A standard solution of 13C2-testosterone is added to the samples at the beginning of ... -
Isotope pattern deconvolution-tandem mass spectrometry for the determination and confirmation of diclofenac in wastewaters
Castillo Tirado, Ángel; GRACIA LOR, EMMA; Roig-Navarro, Antoni F.; Sancho, Juan V; Rodríguez González, Pablo; García Alonso, J. Ignacio Elsevier (2013-02-26)Isotope dilution mass spectrometry (IDMS) based on isotope pattern deconvolution (IPD) has been applied here to MS/MS (QqQ) in order to carry out the quantification and confirmation of organic compounds in complex matrix ... -
Multiple Spiking Species-Specific Isotope Dilution Analysis by Molecular Mass Spectrometry: Simultaneous Determination of Inorganic Mercury and Methylmercury in Fish Tissues
Castillo Tirado, Ángel; Rodríguez González, Pablo; Centineo, Giuseppe; Roig-Navarro, Antoni F.; García Alonso, J. Ignacio American Chemical Society (2010)This work demonstrates, for the first time, the applicability of multiple spiking isotope dilution analysis to molecular mass spectrometry exemplified by the speciation analysis of mercury using GC(EI)MS instrumentation. ... -
Rapid screening of arsenic species in urine from exposed human by inductively coupled plasma mass spectrometry with germanium as internal standard
Castillo Tirado, Ángel; Fabregat-Cabello, Neus; Roig-Navarro, Antoni F.; Boix Sales, Clara; Rodríguez-Castrillón, J.A. Royal Society of Chemistry (2012)In the present work, internal standardization based on species-unspecific isotope dilution analysis technique is proposed in order to overcome the matrix effects and signal drift originated in the speciation of As in urine ... -
Re-certification of hydroxyvitamin D standards by isotope pattern deconvolution
Pitarch-Motellón, Jorge; Roig-Navarro, Antoni F.; Le Goff, C.; Cavalier, E.; Fabregat-Cabello, Neus Elsevier (2019-04-22)Background Vitamin D testing in analytical clinical laboratories has been experiencing a rapid increase of demand over the last years, as it plays a key role in several disorders. Due to the narrow ranges of medical ... -
Study of the electrochemical oxidation of 4,6-dimethyldibenzothiophene on a BDD electrode employing different techniques
Ornelas Dávila, Omar; Lacalle-Bergeron, Leticia; Dávila-Jiménez, Martín M.; Sirés Sadornil, Ignacio; Brillas, E.; Roig-Navarro, Antoni F.; Beltran Arandes, Joaquin; Sancho Llopis, Juan Vicente Elsevier (2021-05-21)The electrochemical oxidation of 4,6-dimethyldibenzothiophene (4,6-DMDBT) at low concentrations on a BDD anode was investigated in a monophasic acetonitrile (93.5% v/v)–water (6.5% v/v, 0.01 M LiClO4) solution. Two oxidation ...