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Related Concept Videos

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...
Matrix-Assisted Laser Desorption Ionization (MALDI)01:08

Matrix-Assisted Laser Desorption Ionization (MALDI)

Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI is an ionization technique, widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.The analyte of interest, a biomolecule or a mixture of biomolecules, is mixed with a suitable matrix...
Rapid Identification of Pathogens01:25

Rapid Identification of Pathogens

MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...
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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Related Experiment Video

Updated: Jun 9, 2026

Characterization of Synthetic Polymers via Matrix Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) Mass Spectrometry
06:56

Characterization of Synthetic Polymers via Matrix Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) Mass Spectrometry

Published on: June 10, 2018

An accurate and clean calibration method for MALDI-MS.

Bosong Xiang1, Mindy Prado

  • 1Monsanto Company, St. Louis, Missouri 63167, USA. bosong.xiang@monsanto.com

Journal of Biomolecular Techniques : JBT
|September 3, 2010
PubMed
Summary
This summary is machine-generated.

A novel mass calibration method for matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS) offers high accuracy without calibration standard drawbacks. This technique avoids interference and signal suppression, yielding clean spectra for protein identification.

Keywords:
PMFmass spectrometry

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Last Updated: Jun 9, 2026

Characterization of Synthetic Polymers via Matrix Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) Mass Spectrometry
06:56

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Published on: June 10, 2018

MALDI Sample Preparation: the Ultra Thin Layer Method
05:28

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Dithranol as a Matrix for Matrix Assisted Laser Desorption/Ionization Imaging on a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer
09:38

Dithranol as a Matrix for Matrix Assisted Laser Desorption/Ionization Imaging on a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer

Published on: November 26, 2013

Area of Science:

  • Analytical Chemistry
  • Spectrometry
  • Biochemistry

Background:

  • Mass calibration is crucial for accurate mass spectrometry analysis.
  • Traditional internal calibration methods in matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS) can suffer from interference and signal suppression.
  • These drawbacks can complicate data interpretation and affect quantitative analysis.

Purpose of the Study:

  • To introduce a new mass calibration method for MALDI-MS.
  • To achieve accuracy comparable to internal calibration while overcoming its limitations.
  • To enable pure sample spectra acquisition without prior sample quantity knowledge.

Main Methods:

  • Development of a novel mass calibration strategy for MALDI-MS.
  • Application of the method to protein identification datasets.
  • Comparative analysis against traditional internal calibration techniques.

Main Results:

  • The new method provides accurate mass calibration for MALDI-MS spectra.
  • It successfully avoids interference and signal suppression issues associated with calibration standards.
  • The method yields pure and clean sample spectra.
  • No prior knowledge of sample quantity is necessary for calibration.

Conclusions:

  • The introduced method offers a superior alternative for MALDI-MS mass calibration.
  • It enhances data quality by eliminating spectral interference.
  • This technique is effective and validated using protein identification data.