Browsing Institut Universitari de Plaguicides i Aigües (IUPA) by Author "4fbc8cb4-1061-4783-bdd3-952df48a517e"
Now showing items 1-7 of 7
-
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 ... -
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 ... -
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 ... -
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 ...