Titre
Ionic liquids as matrices in microfluidic sample deposition for high-mass matrix- assisted laser desorption/ionization mass spectrometry.
Type
article
Institution
Externe
Périodique
Auteur(s)
Weidmann, S.
Auteure/Auteur
Kemmerling, S.
Auteure/Auteur
Mädler, S.
Auteure/Auteur
Stahlberg, H.
Auteure/Auteur
Braun, T.
Auteure/Auteur
Zenobi, R.
Auteure/Auteur
Liens vers les personnes
ISSN
1469-0667
Statut éditorial
Publié
Date de publication
2012
Volume
18
Numéro
3
Première page
279
Dernière page/numéro d’article
286
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Publication Status: ppublish
Résumé
Sample preparation for matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) via a microfluidic deposition device using ionic liquid matrices addresses several problems of standard protocols with crystalline matrices, such as the heterogeneity of sample spots due to the co-crystallization of sample and matrix and the limited capability for high-throughput analysis. Since ionic liquid matrices do not solidify during the measurement, the resulting sample spots are homogeneous. The use of these matrices is also beneficial for automated sample preparation, since crystallization of the matrix is avoided and, thus, no clogging of the spotting device can occur. The applicability of ionic liquids to the analysis of biomolecules with high molecular weights, up to ≈ 1 MDa is shown, as well as a good sensitivity (5 fmol) for recombinant human fibronectin, a protein with a molecular weight of 226 kDa. Microfluidic sample deposition of proteins with high molecular weights will, in the future, allow parallel sample preparation for MALDI-MS and for electron microscopy.
Sujets
PID Serval
serval:BIB_38AA73DB96D2
PMID
Date de création
2023-06-09T14:03:29.575Z
Date de création dans IRIS
2025-05-20T16:54:33Z