Results 21 to 30 of about 102,497 (301)

Determination of Prenatal Substance Exposure Using Meconium and Orbitrap Mass Spectrometry

Toxics, 2022
The aim of this study was to develop and to validate a toxicological untargeted screening relying on LC-HRMS in meconium including the detection of the four main classes of drugs of abuse (DoA; amphetamines, cannabinoids, opioids and cocaine). The method
Atakan Hernandez, Valerie Lacroze, Natalia Doudka, Jenny Becam, Carole Pourriere-Fabiani, Bruno Lacarelle, Caroline Solas, Nicolas Fabresse   +7 more
doaj   +1 more source

Accurate Determination of 12 Lactones and 11 Volatile Phenols in Nongrape Wines through Headspace-Solid-Phase Microextraction (HS-SPME) Combined with High-Resolution Gas Chromatography-Orbitrap Mass Spectrometry (GC-Orbitrap-MS)

, 2022
This paper clarifies the contribution of lactones and volatile phenols to the aroma of nongrape wine. A target method for the simultaneous determination of these two kinds of volatiles in nongrape wines was developed using headspace-solid-phase ...
Na Li (6550), Yaran Liu (12040441), Qingyu Su, Qingyu Su (12040447), Bolin Zhang, Bolin Zhang (748540), Yixin Chen (64217), Yaran Liu, Xu Qian (188503), Jiangtao Xing (12040444), Yixin Chen, Baoqing Zhu (611959), Baoqing Zhu, Jiangtao Xing, Junlong Li, Junlong Li (1574962), Xu Qian, Na Li   +17 more
core   +1 more source

Metabolomic Analysis of Two Parmotrema Lichens: P. robustum (Degel.) Hale and P. andinum (Mull. Arg.) Hale Using UHPLC-ESI-OT-MS-MS

Molecules, 2017
Lichens are symbiotic associations of fungi with microalgae and/or cyanobacteria. Lichens belonging to the Parmeliaceae family comprise 2700 species of lichens, including the Parmotrema genus which is composed of 300 species.
Alfredo Torres-Benítez, María Rivera-Montalvo, Beatriz Sepúlveda, Olivio N. Castro, Edgar Nagles, Mario J. Simirgiotis, Olimpo García-Beltrán, Carlos Areche   +7 more
doaj   +1 more source

An evaluation of instrument types for mass spectrometry-based multi-attribute analysis of biotherapeutics

mAbs, 2020
Multi-attribute methods (MAM), based on proteolytic digestion followed by liquid chromatography-mass spectrometry analysis of proteolytic peptides, have gained substantial attention in the biopharmaceutical industry for quantifying a variety of quality ...
Zhongqi Zhang, Pik K. Chan, Jason Richardson, Bhavana Shah   +3 more
doaj   +1 more source

Ultra-fast searching assists in evaluating sub-ppm mass accuracy enhancement in U-HPLC/Orbitrap MS data [PDF]

, 2010
A strategy, detailed methodology description and software are given with which the mass accuracy of U-HPLC-Orbitrap data (resolving power 50,000 FWHM) can be enhanced by an order of magnitude to sub-ppm levels.
J. Efraim Oosterink, Mol, J.G.J., Ruiz-Arcama, A., Ruud J. B. Peters, Arjen Lommen, Oosterink, J.E., Gerssen, A., Harrie J. Kools, Lommen, A., Ainhoa Ruiz-Aracama, Arjen Gerssen, Peters, R.J.B., Kools, H.J., Hans G. J. Mol   +13 more
core   +1 more source

Orbitrap settings.

, 2023
Settings used for high-resolution mass spectrometry on the Orbitrap instrument. (PDF)
Simone Heyen (17712095), Heinz Wilkes (1333596), Vivien Schneider (17712098), Lukas Hüppe (8019242), Bettina Meyer (201867)   +4 more
core   +1 more source

Dyes from the Ashes: Discovering and Characterizing Natural Dyes from Mineralized Textiles

Molecules, 2020
Vesuvius eruption that destroyed Pompeii in AD 79 represents one of the most important events in history. The cataclysm left behind an abundance of archeological evidence representing a fundamental source of the knowledge we have about ancient Roman ...
Alessandro Ciccola, Ilaria Serafini, Francesca Ripanti, Flaminia Vincenti, Francesca Coletti, Armandodoriano Bianco, Claudia Fasolato, Camilla Montesano, Marco Galli, Roberta Curini, Paolo Postorino   +10 more
doaj   +1 more source

Assessment of Co-Formulants in Marketed Plant Protection Products by LC-Q-Orbitrap-MS: Application of a Hybrid Data Treatment Strategy Combining Suspect Screening and Unknown Analysis

, 2022
The aim of this study was the determination of co-formulants in 15 different chlorantraniliprole- and difenoconazole-based plant protection products (PPPs) belonging to different formulations.
Rosalía López-Ruiz (12575494), Antonio Jesús Maldonado-Reina (12815323), Antonia Garrido-Frenich (12815329), Roberto Romero-González (6244337), José Luis Martínez Vidal (12815326)   +4 more
core   +1 more source

Potential of Fourier Transform Mass Spectrometry (Orbitrap and Ion Cyclotron Resonance) for Speciation of the Selenium Metabolome in Selenium-Rich Yeast

Frontiers in Chemistry, 2020
The evolution of the field of element speciation, from the targeted analysis for specific element species toward a global exploratory analysis for the entirety of metal- or metalloid-related compounds present in a biological system (metallomics ...
Katarzyna Bierla, Giovanni Chiappetta, Joëlle Vinh, Ryszard Lobinski, Ryszard Lobinski, Ryszard Lobinski, Joanna Szpunar   +6 more
doaj   +1 more source

Optimized orbitrap HCD for quantitative analysis of phosphopeptides [PDF]

Journal of the American Society for Mass Spectrometry, 2009
Despite the tremendous commercial success of radio frequency quadrupole ion traps for bottom-up proteomics studies, there is growing evidence that peptides decorated with labile post-translational modifications are less amenable to low-energy, resonate excitation MS/MS analysis.
Yi, Zhang, Scott B, Ficarro, Shaojuan, Li, Jarrod A, Marto   +3 more
openaire   +2 more sources