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Related Concept Videos

Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...

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Profiling of Methyltransferases and Other S-adenosyl-L-homocysteine-binding Proteins by Capture Compound Mass Spectrometry (CCMS)
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LC-SPE-NMR-MS: a total analysis system for bioanalysis.

Götz Schlotterbeck1, Simona M Ceccarelli

  • 1F Hoffmann-La Roche Ltd, Pharmaceuticals Division, CH-4070 Basel, Switzerland. goetz.schlotterbeck@roche.com

Bioanalysis
|November 19, 2010
PubMed
Summary

This study introduces a liquid chromatography-solid-phase extraction-nuclear magnetic resonance-mass spectrometry (LC-SPE-NMR-MS) system. This integrated technology accelerates the structure elucidation of complex mixtures, even with limited sample amounts.

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Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Chromatography

Background:

  • Complex mixtures require advanced analytical techniques for component identification.
  • Traditional methods for isolating and purifying valuable compounds from complex matrices are often laborious and time-consuming.
  • Mass-limited samples present significant challenges for traditional structure elucidation.

Purpose of the Study:

  • To present an integrated modular system combining LC-SPE-NMR-MS for rapid and comprehensive structure elucidation.
  • To demonstrate how this technique circumvents laborious serial isolation procedures.
  • To highlight the advantages over existing methods like directly coupled LC-NMR.

Main Methods:

  • Coupling of liquid chromatography (LC) with solid-phase extraction (SPE), nuclear magnetic resonance (NMR), and mass spectrometry (MS).
  • Utilizing an integrated modular system for simultaneous data acquisition from a single chromatographic peak.
  • Employing high-end analytical technology for enhanced information depth.

Main Results:

  • Significantly accelerated structure-elucidation process for valuable, mass-limited samples.
  • Concurrent availability of NMR and MS data increases information depth for each chromatographic peak.
  • Overcomes limitations of directly coupled LC-NMR, offering full flexibility in chromatographic and NMR acquisition parameters.

Conclusions:

  • LC-SPE-NMR-MS is a powerful, flexible technique poised to become a gold standard in analytical chemistry.
  • This integrated system enables rapid structure elucidation not achievable with MS or NMR data alone.
  • The modular approach enhances efficiency and analytical power for complex mixture analysis.