Results 11 to 20 of about 229,222 (210)

Implementation of a MS/MS database for isoquinoline alkaloids and other annonaceous metabolites

open access: yesScientific Data, 2022
Measurement(s) electrospray ionization Technology Type(s) Ultra High-performance Liquid Chromatography • Tandem Mass ...
Salemon Akpa Agnès   +12 more
doaj   +1 more source

Exploiting the formation of adducts in mobile phases with ammonium fluoride for the enhancement of annotation in liquid chromatography-high resolution mass spectrometry based lipidomics

open access: yesJournal of Chromatography Open, 2021
Liquid Chromatography-High Resolution Mass Spectrometry (LC-HRMS) based lipidomics has become the most versatile analytical tool to discover and detect lipids using a non-targeted approach.
Carolina Gonzalez-Riano   +2 more
doaj   +1 more source

Desorption Electrospray Ionization (DESI) Mass Spectrometric Imaging of the Distribution of Rohitukine in the Seedling of Dysoxylum binectariferum Hook. F. [PDF]

open access: yesPLoS ONE, 2016
Ambient ionization mass spectrometric imaging of all parts of the seedling of Dysoxylum binectariferum Hook. f (Meliaceae) was performed to reconstruct the molecular distribution of rohitukine (Rh) and related compounds.
Patel Mohana Kumara   +5 more
doaj   +1 more source

Evaporation and Discharge Dynamics of Highly Charged Multicomponent Droplets Generated by Electrospray Ionization [PDF]

open access: yes, 2010
We investigate the Rayleigh discharge and evaporation dynamics of highly charged two-component droplets consisting principally of methanol with 2-methoxyethanol, tert-butanol, or m-nitrobenzyl alcohol.
Beauchamp, J. L., Grimm, Ronald L.
core   +1 more source

Principles of Electrospray Ionization [PDF]

open access: yesMolecular & 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   +5 more sources

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

open access: yes, 2013
The characteristic collision energy (CCE) to obtain 50% fragmentation of positively and negatively single charged non-covalent clusters has been measured.
Bongiorno, David   +7 more
core   +2 more sources

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

open access: yesFrontiers 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

Levitated Spinning Graphene [PDF]

open access: yes, 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

Structural Plasticity and Noncovalent Substrate Binding in the GroEL Apical Domain. A study using electrospray ionization mass spectrometry and fluorescence binding studies [PDF]

open access: yes, 2002
Advances in understanding how GroEL binds to non-native proteins are reported. Conformational flexibility in the GroEL apical domain, which could account for the variety of substrates that GroEL binds, is illustrated by comparison of several independent ...
Adams   +62 more
core   +1 more source

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

open access: yesQuímica 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   +2 more
doaj   +1 more source

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