Results 251 to 260 of about 682,349 (297)

Microfabrication of polydimethylsiloxane electrospray ionization emitters

Journal of Chromatography A, 2001
Microfabricated polydimethylsiloxane (PDMS) emitters for electrospray ionization mass spectrometry (ESI-MS) were implemented as tips along the edge of the PDMS device by three methods which utilize soft lithography processes. These microfabrication methods for producing PDMS emitters as an integral part of a microfluidic device will facilitate ...
J S, Kim, D R, Knapp
openaire   +2 more sources

Integration of electropreconcentration and electrospray ionization in a microchip

Journal of Chromatography A, 2018
A microfluidic glass chip for performing sensitive mass spectrometry (MS) is developed by integrating nanochannel-based electropreconcentration with electrospray ionization (ESI). Cation analytes in acidic buffer conditions (∼pH 3) were preconcentrated at a micro-nano-microchannel junction where a positively charged polymer, polyE-323, is coated to ...
openaire   +2 more sources

Oxidation of peptides during electrospray ionization

Rapid Communications in Mass Spectrometry, 1993
Abstract [M+H+16] + ions were observed in the electrospray ionization mass spectra of several synthetic and maturally occurring peptides. Initial results have shown that the appearance of the modification is dependent on the field strength at the electrospray needle and the ...
K, Morand, G, Talbo, M, Mann
openaire   +2 more sources

An Electrospray Ionization Source for Integration with Microfluidics

Analytical Chemistry, 2002
We have demonstrated a new electrospray ionization (ESI) device incorporating a tip made from a shaped thin film, bonded to a microfluidic channel, and interfaced to a time-of-flight mass spectrometer (TOFMS). A triangular-shaped thin polymer tip was formed by lithography and etching.
Jun, Kameoka, Reid, Orth, Bojan, Ilic, David, Czaplewski, Tim, Wachs, H G, Craighead   +5 more
openaire   +2 more sources

Secondary Electrospray Ionization

2014
This chapter details the technique called extractive electrospray ionization (EESI) and describes its state-of-the-art developmental, mechanical and experimental aspects and shows its most important applications. EESI is a sensitive, matrix-tolerant secondary electrospray ionization technique, which is in the focus of ongoing investigations.
openaire   +1 more source

Electrospray ionization for mass spectrometry of large biomolecules.

Science, 1989
J. Fenn, M. Mann, C. Meng, Shek-Fu Wong, C. Whitehouse   +4 more
semanticscholar   +1 more source

Mass Spectrometry Sampling Under Ambient Conditions with Desorption Electrospray Ionization

Science, 2004
Z. Takáts, J. Wiseman, B. Gologan, R. Cooks, Hao Chen, Ismael Cotte-Rodríguez, Y. Song, R. Sparrapan, L. Eberlin, R. Haddad, M. Eberlin, R. Augusti   +11 more
semanticscholar   +1 more source

Special Feature on Electrospray Ionization

Journal of Mass Spectrometry, 2000
, Cooks, , Caprioli
openaire   +2 more sources

Plant Metabolomics: Maximizing Metabolome Coverage by Optimizing Mobile Phase Additives for Nontargeted Mass Spectrometry in Positive and Negative Electrospray Ionization Mode.

Analytical Chemistry, 2017
M. Creydt, M. Fischer
semanticscholar   +1 more source

Simultaneous analysis of ten phytohormones in Sargassum horneri by high-performance liquid chromatography with electrospray ionization tandem mass spectrometry.

Journal of Separation Science, 2016
Yan Li, Chengxu Zhou, Xiaojun Yan, Jinrong Zhang, Jilin Xu   +4 more
semanticscholar   +1 more source