Listar por autoría "8e6e728b-248b-49d4-ae6c-6e39f1cdff3b"
Mostrando ítems 1-7 de 7
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Analytical study on ethephon residue determination in water by ion-pairing liquid chromatography/tandem mass spectrometry
Ripollés Vidal, Cristina; Marín Ramos, José Manuel; Sancho, Juan V; Lopez, Francisco; Hernandez, Felix Taylor & Francis (2011-11-22)A detailed analytical study on ethephon residue determination in water, making use of ion-pairing liquid chromatography coupled to electrospray tandem mass spectrometry (LC/MS/MS), has been carried out. Ethephon is a plant ... -
Determination of 17b-estradiol and 17a-ethinylestradiol in water at sub-ppt levels by liquid chromatography coupled to tandem mass spectrometry
Ripollés Vidal, Cristina; Ibáñez, Maria; Sancho, Juan V; Lopez, Francisco; Hernandez, Felix Royal Society of Chemistry (2014-06)Steroid estrogens are a group of endocrine disrupting compounds (EDCs) excreted in human urine mainly as glucuronide or sulfate conjugates, which might be converted back into the free estrogens in water. The natural estrogen ... -
Determination of eight nitrosamines in water at the ng L−1 levels by liquid chromatography coupled to atmospheric pressure chemical ionization tandem mass spectrometry
Ripollés Vidal, Cristina; Pitarch, Elena; Sancho, Juan V; Lopez, Francisco; Hernandez, Felix Elsevier (2011-09-19)In this work, we have developed a sensitive method for detection and quantification of eight N-nitrosamines, N-nitrosodimethylamine (NDMA), N-nitrosomorpholine (NMor), N-nitrosomethylethylamine (NMEA), N-nitrosopirrolidine ... -
Determination of sub-ppb epichlorohydrin levels in water by on-line solid-phase extraction liquid chromatography/tandem mass spectrometry
Ripollés Vidal, Cristina; Marín Ramos, José Manuel; Lopez, Francisco; Sancho, Juan V; Hernandez, Felix John Wiley (2009-06)A new sensitive and selective method based on on-line solid-phase extraction (SPE) coupled to liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) using a triple quadrupole mass spectrometer ... -
Development of sensitive and rapid analytical methodology for food analysis of 18 mycotoxins included in a total diet study
Beltrán Iturat, Eduardo; Ibáñez, Maria; Portoles, Tania; Ripollés Vidal, Cristina; Sancho, Juan V; Yusà, Vicent; Marín, Silvia; Hernandez, Felix Elsevier (2013)A rapid and sensitive method for the determination of 18 mycotoxins in 24 different food matrices has been developed and validated. With the exception of beverages and oil samples, a simple extraction with acetonitrile:water ... -
Liquid chromatography coupled to tandem mass spectrometry for the residue determination of ethylenethiourea (ETU) and propylenethiourea (PTU) in water
Hernandez, Felix; Lopez, Francisco; Ripollés Vidal, Cristina; Sancho, Juan V Elsevier (2012)Ethylenethiourea (ETU) and propylenethiourea (PTU) are the main degradation products of dithiocarbamates fungicides, which are widely used in agriculture from several years ago. Their determination in water at low ... -
Strategies to Characterize Polar Organic Contamination in Wastewater: Exploring the Capability of High Resolution Mass Spectrometry
Schymanski, Emma; Singer, Heinz P.; Longrée, Philipp; Loos, Martin; Ruff, Matthias; Stravs, Michael A.; Ripollés Vidal, Cristina; Hollender, Juliane ACS (2014)Wastewater effluents contain a multitude of organic contaminants and transformation products, which cannot be captured by target analysis alone. High accuracy, high resolution mass spectrometric data were explored with ...