Raquel Sero Llor

Scopus Publications

Potential of desorption electrospray ionization and paper spray ionization with high-resolution mass spectrometry for the screening of sports doping agents in urine
Claudia Bressan, Raquel Seró, Élida Alechaga, Nuria Monfort, Encarnación Moyano, Rosa Ventura
Analytical Methods, 2022
In this work, desorption electrospray ionization and paper spray ionization both with high-resolution mass spectrometry (DESI-HRMS and PSI-HRMS) were explored for the fast and direct analysis of stimulants and diuretics in urine samples.
Paper spray-atmospheric pressure photoionization-high resolution mass spectrometry for the direct analysis of neutral fluorinated compounds in waterproof impregnation sprays
R. Seró, J.F. Ayala-Cabrera, F.J. Santos, E. Moyano
Analytica Chimica Acta, 2022
APPI combined with a PS-based technique has been proposed for the first time. Low-cost and fast method for the screening of non-polar and low polar compounds. The use of a dopant as spray solvent helps to ionize non-polar PFAS by APPI. PS-APPI allows the efficient ionization of all studied families of neutral PFAS. Neutral PFAS were found in 7 out of 16 waterproof impregnation sprays.
Determination of benzophenone and related compounds in plastic packaged baby food by ultra-high-performance liquid chromatography coupled to tandem mass spectrometry
N. I. Medina-Pérez, A. Arrizabalaga-Larrañaga, R. Seró, E. Moyano
Analytical Methods, 2020
Benzophenone and its derivatives (BPs) are commonly used as photoinitiators in UV-inks and as additives in plastic food packaging.
Ambient ionization mass spectrometry in food analysis
A. Arrizabalaga-Larrañaga, J.F. Ayala-Cabrera, R. Seró, J.F. Santos, E. Moyano
Food Toxicology and Forensics, 2020
Trace analysis of polystyrene microplastics in natural waters
Gabriella F. Schirinzi, Marta Llorca, Raquel Seró, Encarnación Moyano, Damià Barceló, Esteban Abad, Marinella Farré
Chemosphere, 2019
Modified distribution in the polyphenolic profile of rosemary leaves induced by plant inoculation with an arbuscular mycorrhizal fungus
Raquel Seró, Nerea Núñez, Oscar Núñez, Amelia Camprubí, Josep M Grases, Javier Saurina, Encarnación Moyano, Cinta Calvet
Journal of the Science of Food and Agriculture, 2019
BACKGROUNDRosemary forms an arbuscular mycorrhizal (AM) symbiosis with a group of soilborne fungi belonging to the phylum Glomeromycota, which can modify the plant metabolome responsible for the antioxidant capacity and other health beneficial properties of rosemary.RESULTSThe effect of inoculating rosemary plants with an AM fungus on their growth via their polyphenolic fingerprinting was evaluated after analyzing leaf extracts from non‐inoculated and inoculated rosemary plants by ultra‐high performance liquid chromatography‐high resolution mass spectrometry (UHPLC‐HRMS). Plant growth parameters indicated that mycorrhizal inoculation significantly increased plant height and biomass. Chemical modifications in the plant polyphenolic profile distribution were found after a principal components analysis (PCA) loading plots study. Four compounds hosting strong antioxidant properties – ferulic acid, asiatic acid, carnosol, and vanillin – were related to mycorrhizal rosemary plants while caffeic and chlorogenic acids had a higher influence on non‐mycorrhizal plants.CONCLUSIONMycorrhization was found to stimulate growth to obtain a higher biomass of plant leaves in a short time, avoiding chemical fertilization, while analytical results demonstrate that there is an alteration in the distribution of polyphenols in plants colonized by the symbiotic fungus, which can be related to an improvement in nutritional properties with future industrial significance. © 2018 Society of Chemical Industry
Desorption electrospray ionization-high resolution mass spectrometry for the analysis of unknown materials: The phytosanitary product case
R. Sero, M. Vidal, J. Bosch, P. Rodríguez, M.T. Galceran, E. Moyano
Talanta, 2019
Analytical methods for the determination of plasticizers in food and beverages
Raquel Sero, Oscar Nunez, Francisco Javier Santos, Encarnacion Moyano
Current Analytical Chemistry, 2018
Introduction: Nowadays, plastics play an important role in many industrial applications. During the production of plastics, plasticizers are added to enhance the properties of parent polymers, but some of them have shown xenoestrogen activity and their continuous exposure to humans can constitute a health risk. Sensitive and selective analytical methods are required to control the presence of these compounds and to assess the health risk. Objective: The aim of this paper is to review the analytical methodology used to determine plasticizers in food and beverages and to highlight the most important milestones and drawbacks observed in this field. Methods: The last decade literature has been reviewed. Emphasis has been placed on "blank" problems and in the application of separation techniques coupled to mass spectrometry, but the potential of ambient mass spectrometry techniques has also been addressed. Results: Separation techniques coupled to high-resolution or tandem mass spectrometry are the techniques most frequently used in this field. Nevertheless, the ubiquity of some plasticizers can contribute to background levels hindering quantitative results. The strategies applied to avoid/minimize this contamination are critically discussed in this paper. New methods based on ambient mass spectrometry have emerged to directly analyze samples avoiding sample manipulation and overcoming blank problems. Conclusion: The development of fast, simple and automatable methods to reduce analysis time and to avoid sample contamination is still needed. The future use of ambient mass spectrometry techniques for a fast screening with minimal manipulation of samples can be helpful. The evaluation of alternative ionization methods in mass spectrometry would expand the number of compounds to be identified and will help in solving possible matrix effects. Keywords: Plasticizers, phthalates, food contact materials, food packaging, GC-MS, LC-MS, ambient mass spectrometry.
HPLC-UV polyphenolic profiles in the classification of olive oils and other vegetable oils via principal component analysis
Mireia Farrés-Cebrián, Raquel Seró, Javier Saurina, Oscar Núñez
Separations, 2016
High performance liquid chromatography-ultraviolet (HPLC-UV) was applied to the analysis and characterization of olive oils and other vegetable oils. A chromatographic separation on a Zorbax Eclipse XDB-C8 reversed-phase column was proposed under gradient elution, employing 0.1% formic acid aqueous solution and methanol as mobile phase, for the determination of 14 polyphenols and phenolic acids, allowing us to obtain compositional profiles in less than 20 min. Acceptable sensitivity (limit of detection (LOD) values down to 80 µg/L in the best of cases), linearity (r2 higher than 0.986), good run-to-run and day-to-day precisions (relative standard deviation (RSD) values lower than 11.5%), and method trueness (relative errors lower than 6.8%) were obtained. The proposed HPLC-UV method was then applied to the analysis of 72 oil samples (47 olive oils and 27 vegetable oils including sunflower, soy, corn, and mixtures of them). Analytes were recovered using a liquid–liquid extraction method employing ethanol:water 70:30 (v/v) solution and hexane as extracting and defatting solvents, respectively. HPLC-UV polyphenolic profiles using peak areas were then analysed by principal component analysis (PCA) to extract information from the most significant data contributing to the characterization and classification of olive oils against other vegetable oils, as well as among Arbequina and Picual olive oil varieties. PCA results showed a noticeable difference between olive oils and the other classes. In addition, a reasonable discrimination of olive oils as a function of fruit varieties was also encountered.
Ambient Ionisation-High-Resolution Mass Spectrometry. Environmental, Food, Forensic and Doping analysis
R. Seró, Ó. Núñez, E. Moyano
Comprehensive Analytical Chemistry, 2016
Desorption electrospray ionization-high resolution mass spectrometry for the screening of veterinary drugs in cross-contaminated feedstuffs
Raquel Seró, Oscar Núñez, Jaume Bosch, José M. Grases, Pilar Rodríguez, Encarnacion Moyano, Martia Teresa Galceran
Analytical and Bioanalytical Chemistry, 2015