Recent methodological advances in MALDI mass spectrometry

Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) is widely used for characterization of large, thermally labile biomolecules. Advantages of this analytical technique are high sensitivity, robustness, high-throughput capacity, and applicability to a wide range of compound clas...

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Veröffentlicht in:Analytical and bioanalytical chemistry 2014-04, Vol.406 (9-10), p.2261-2278
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description Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) is widely used for characterization of large, thermally labile biomolecules. Advantages of this analytical technique are high sensitivity, robustness, high-throughput capacity, and applicability to a wide range of compound classes. For some years, MALDI-MS has also been increasingly used for mass spectrometric imaging as well as in other areas of clinical research. Recently, several new concepts have been presented that have the potential to further advance the performance characteristics of MALDI. Among these innovations are novel matrices with low proton affinities for particularly efficient protonation of analyte molecules, use of wavelength-tunable lasers to achieve optimum excitation conditions, and use of liquid matrices for improved quantification. Instrumental modifications have also made possible MALDI-MS imaging with cellular resolution as well as an efficient generation of multiply charged MALDI ions by use of heated vacuum interfaces. This article reviews these recent innovations and gives the author’s personal outlook of possible future developments. Figure Figure published in Cramer, RC, Dreisewerd, K. (2007) UV Matrix‐Assisted Laser Desorption/Ionization: Principles, Instrumentation, and Applications. In: M. Gross (Ed.): Encyclopedia of Mass Spectrometry, Vol. 6, pp 646‐661, Elsevier, Oxford
doi_str_mv 10.1007/s00216-014-7646-6
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subjects Acids
Analysis
Analytical Chemistry
Animals
Biochemistry
Bisphenol A
Characterization and Evaluation of Materials
Charging
Chemistry
Chemistry and Materials Science
Food Science
Humans
Imaging
Innovations
Ionization
Laboratory Medicine
Lasers
Lipids
Liquids
Mass spectrometry
Mathematical analysis
Monitoring/Environmental Analysis
Optimization
Peptides
Peptides - chemistry
Proteins
Proteins - chemistry
Review
Robustness
Scientific imaging
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization - methods
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization - trends
Trace elements
title Recent methodological advances in MALDI mass spectrometry
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