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Mass Spectrometry: Complex Analysis01:21

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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.
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Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass spectrometry is to generate ions from the analyte molecule and measure these ion abundances against their molecular mass. One common type of ionization, known as electron ionization or EI, bombards the analyte molecules in the gas phase with high-energy electron beams. The electron beams displace an electron from the molecule and leave behind a...
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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...
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Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of a molecule is different depending on the specific isotope of its elements involved. As a result, the mass spectrum of the molecule exhibits peaks from the same fragment at multiple positions. The positions of these mass signals depend on the mass differences between isotopes. Furthermore, the intensity of these signals is dependent on the...
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In mass spectroscopy, amines undergo fragmentation to give parent ions with odd molecule weights. This observed mass spectrum follows the nitrogen rule; a molecule with an odd number of nitrogen atoms produces a molecular ion with an odd molecular weight. Amines undergo fragmentation through α cleavage, producing nitrogen-containing cations—iminium ions—and alkyl radicals. Mass spectra of aromatic and cyclic aliphatic amines exhibit strong molecular ion peaks, but acyclic...
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Erratum to: Characterizing Intact Macromolecular Complexes Using Native Mass Spectrometry.

Elisabetta Boeri Erba1, Luca Signor2, Mizar F Oliva2

  • 1Institut de Biologie Structurale (IBS), Université de Grenoble Alpes, CEA, CNRS, Grenoble, France. elisabetta.boeri-erba@ibs.fr.

Methods in Molecular Biology (Clifton, N.J.)
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Summary
This summary is machine-generated.

This study details the process of updating a book's acknowledgement section with author-provided text. The revised version now includes the additional information as requested by the chapter author.

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Area of Science:

  • Book publishing and editorial processes.
  • Academic writing and author contributions.

Background:

  • Authors may provide supplementary text for acknowledgements.
  • Ensuring accurate and complete author acknowledgements is crucial for academic integrity.

Purpose of the Study:

  • To document the integration of author-provided text into a book's acknowledgement section.
  • To confirm the successful update in the revised book version.

Main Methods:

  • Receiving additional text from a chapter author.
  • Updating the acknowledgement section in the book manuscript.
  • Verifying the inclusion of the new text in the revised version.

Main Results:

  • The chapter author's additional text was successfully incorporated.
  • The acknowledgement section in the revised book version has been updated.

Conclusions:

  • The process of incorporating author-requested changes to acknowledgements is effective.
  • Maintaining accurate author acknowledgements enhances the final published work.