Results 21 to 30 of about 599,586 (355)

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

An extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF) for online measurement of atmospheric aerosol particles

Atmospheric Measurement Techniques, 2019
. Real-time, online measurements of atmospheric organic aerosol (OA) composition are an essential tool for determining the emissions sources and physicochemical processes governing aerosol effects on climate and health.
F. Lopez‐Hilfiker, V. Pospisilova, Wei Huang, M. Kalberer, C. Mohr, Giulia Stefenelli, J. Thornton, U. Baltensperger, A. Prévôt, J. Slowik   +9 more
semanticscholar   +1 more source

Mechanistic investigation of ionization suppression in electrospray ionization

Journal of the American Society for Mass Spectrometry, 2000
We show results from experiments designed to determine the relative importance of gas phase processes and solution phase processes into ionization suppression observed in biological sample extracts. The data indicate that gas phase reactions leading to the loss of net charge on the analyte is not likely to be the most important process involved in ...
Richard King, Timothy V. Olah, Ryan Bonfiglio, Cynthia Miller-Stein, Carmen Fernandez-Metzler   +4 more
openaire   +3 more sources

Recent Applications of Ambient Ionization Mass Spectrometry for Environmental Pollutant Detection [PDF]

Zhipu Xuebao, 2023
Along with the industrial development and human society progress, large number of pollutants have been discharged to induce the environmental pollution, which have attracted global attentions.
QIN Jing-yi, OUYANG Jin, NA Na
doaj   +1 more source

Desorption Electrospray Ionization Mass Spectrometry Imaging of Proteins Directly from Biological Tissue Sections.

Analytical Chemistry, 2018
Analysis of large biomolecules including proteins has proven challenging using ambient ionization mass spectrometry imaging techniques. Here, we have successfully optimized desorption electrospray ionization mass spectrometry (DESI-MS) to detect intact ...
Kyana Y. Garza, Clara L. Feider, Dustin R. Klein, Jake A Rosenberg, J. Brodbelt, L. Eberlin   +5 more
semanticscholar   +1 more source

Fabricating an Electrospray Ionization Chip Based on Induced Polarization and Liquid Splitting

Micromachines, 2021
The coupling of the microfluidic chip to mass spectrometry (MS) has attracted considerable attention in the area of chemical and biological analysis.
Lvhan Zhou, Qian Zhang, Xiangchun Xu, Xinming Huo, Qian Zhou, Xiaohao Wang, Quan Yu   +6 more
doaj   +1 more source

Selection of internal standards for accurate quantification of complex lipid species in biological extracts by electrospray ionization mass spectrometry-What, how and why?

Mass spectrometry reviews (Print), 2017
Lipidomics is rapidly expanding because of the great facilitation of recent advances in, and novel applications of, electrospray ionization mass spectrometry techniques.
Miao Wang, Chunyan Wang, Xianlin Han
semanticscholar   +1 more source

Direct Ambient Analysis of Pharmaceutical and Ecstasy Tablets

CHIMIA, 2006
Desorption electrospray ionization (DESI) is a new ionization technique recently introduced in analytical chemistry for the ambient analysis of surfaces by mass spectrometry.
Luc Alexis Leuthold, Jean-François Mandscheff, Marc Fathi, Christian Giroud, Marc Augsburger, Emmanuel Varesio, Gérard Hopfgartner   +6 more
doaj   +1 more source

An Organic Chemist’s Guide to Electrospray Mass Spectrometric Structure Elucidation

Molecules, 2019
Tandem mass spectrometry is an important tool for structure elucidation of natural and synthetic organic products. Fragmentation of odd electron ions (OE+) generated by electron ionization (EI) was extensively studied in the last few decades, however ...
Arnold Steckel, Gitta Schlosser
doaj   +1 more source

Implications of Matrix Effects in Quantitative HPLC/ESI-ToF-MS Analyses of Atmospheric Organic Aerosols

Proceedings, 2020
Matrix-induced signal suppression or enhancements are known phenomena in electrospray ionization mass spectrometry. Very few studies report on method development for organic aerosols analyses with the evaluation of the matrix effects.
Cornelia Amarandei, Romeo Iulian Olariu, Cecilia Arsene   +2 more
doaj   +1 more source