Results 21 to 30 of about 230,711 (334)

Spatially-resolved in vivo plant metabolomics by laser ablation-based mass spectrometry imaging (MSI) techniques: LDI-MSI and LAESI

Frontiers in Plant Science, 2015
This short review aims to summarize the current developments and applications of mass spectrometry-based methods for in situ profiling and imaging of plants with minimal or no sample pre-treatment or manipulation.
Aleš eSvatoš, Benjamin eBartels
doaj   +1 more source

Neutral particle Mass Spectrometry with Nanomechanical Systems [PDF]

, 2015
Current approaches to Mass Spectrometry (MS) require ionization of the analytes of interest. For high-mass species, the resulting charge state distribution can be complex and difficult to interpret correctly.
Alava, Thomas, Brenac, Ariel, Dupré, Cécilia, Duraffourg, Laurent, Hanay, Mehmet Selim, Hentz, Sébastien, Masselon, Christophe, Morel, Robert, Roukes, Michael L., Sage, Eric   +9 more
core   +5 more sources

Principles of Electrospray Ionization [PDF]

Molecular & Cellular Proteomics, 2011
Electrospray ionization is today the most widely used ionization technique in chemical and biochemical analysis. Interfaced with a mass spectrometer it allows the investigation of the molecular composition of liquid samples. With electrospray a large variety of chemical substances can be ionized.
openaire   +6 more sources

Comparison of Plasma Ionization- and Secondary Electrospray Ionization- High-resolution Mass Spectrometry for Real-time Breath Analysis

CHIMIA, 2022
Real-time breath analysis by high-resolution mass spectrometry (HRMS) is a promising method to noninvasively retrieve relevant biochemical information.
Jiafa Zeng, Alexandra Christen, Kapil Dev Singh, Urs Frey, Pablo Sinues   +4 more
doaj   +1 more source

High-frequency gaseous and particulate chemical characterization using extractive electrospray ionization mass spectrometry (Dual-Phase-EESI-TOF) [PDF]

Atmospheric Measurement Techniques, 2022
To elucidate the sources and chemical reaction pathways of organic vapors and particulate matter in the ambient atmosphere, real-time detection of both the gas and particle phase is needed.
C. P. Lee, M. Surdu, D. M. Bell, J. Dommen, M. Xiao, X. Zhou, A. Baccarini, A. Baccarini, S. Giannoukos, S. Giannoukos, G. Wehrle, P. A. Schneider, A. S. H. Prevot, J. G. Slowik, H. Lamkaddam, D. Wang, U. Baltensperger, I. El Haddad   +17 more
doaj   +1 more source

Estudo por espectrometria de massas de soluções de hidróxi(tosilóxi)iodobenzeno: propostas para mecanismos de desproporção

Química Nova, 2012
Solutions of [hydroxy(tosyloxy)iodo]benzene (HTIB or Koser's reagent) in acetonitrile were analyzed using high resolution electrospray ionization mass spectrometry (ESI-MS) and electrospray ionization tandem mass spectrometry (ESI-MS/MS) under different ...
Ramon S. Vasconcelos, Luiz F. Silva Jr, Norberto P. Lopes   +2 more
doaj   +1 more source

Degrees of freedom effect on fragmentation in tandem mass spectrometry of singly charged supramolecular aggregates of sodium sulfonates [PDF]

, 2013
The characteristic collision energy (CCE) to obtain 50% fragmentation of positively and negatively single charged non-covalent clusters has been measured.
Bongiorno, David, Ceraulo, Leopoldo, Drahos, László, Indelicato, Serena, Indelicato, Sergio, Liveri, Vincenzo Turco, Turiák, Lilla, Vékey, Károly   +7 more
core   +2 more sources

Transmission mode desorption electrospray ionization [PDF]

Journal of the American Society for Mass Spectrometry, 2008
A new mode of operation for desorption electrospray ionization (DESI) analysis of liquids or solid residues from evaporated solvents is presented. Unlike traditional DESI, the electrospray is not deflected off of a surface but instead is transmitted through a sampling mesh at a 0 degrees angle between the electrospray tip, sample mesh, and capillary ...
Jennifer S. Brodbelt, Joseph E. Chipuk
openaire   +3 more sources

Levitated Spinning Graphene [PDF]

, 2010
A method is described for levitating micron-sized few layer graphene flakes in a quadrupole ion trap. Starting from a liquid suspension containing graphene, charged flakes are injected into the trap using the electrospray ionization technique and are ...
Kane, B. E.
core   +1 more source

Electrospray ionization of copper—glycine solutions [PDF]

Journal of the American Society for Mass Spectrometry, 1996
We have characterized the electrospray ionization (ESI) spectra of mixtures of the 3d transition metal ion Cu(2+) with both a model amino acid (glycine) and a simple peptide system (glycylglycine). We found what appear to be two major classes of ions.
Yaodong Xu, Alfred L. Yergeycor, Xin Zhang   +2 more
openaire   +3 more sources