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Alternative sample diluents in bioanalytical LC-MS.

Victor David1, Mihaela Cheregi, Andrei Medvedovici

  • 1University of Bucharest, Faculty of Chemistry, Department of Analytical Chemistry, Sos. Panduri no. 90, Bucharest 050663, Romania.

Bioanalysis
|December 11, 2013
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Summary

This review examines sample diluents in bioanalytical liquid chromatography-mass spectrometry (LC-MS), focusing on large-volume injections and non-miscible solvents. Alternative diluents can improve quantitation limits and analyte retention in LC-MS bioanalysis.

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Pharmacology

Background:

  • Sample diluents are critical in bioanalytical liquid chromatography-mass spectrometry (LC-MS), impacting method sensitivity and analyte behavior.
  • Traditional diluents can pose challenges, especially with large-volume injections and solvents immiscible with the mobile phase.
  • These challenges stem from sample preparation methods preceding chromatographic analysis.

Purpose of the Study:

  • To review the challenges associated with sample diluents in bioanalytical LC-MS.
  • To explore the use and principles of alternative, non-miscible sample diluents.
  • To discuss current applications and future potential of these alternative diluents in bioanalysis.

Main Methods:

  • Literature review of existing studies on sample diluents in bioanalytical LC-MS.
  • Analysis of the impact of sample volume and diluent properties on quantitation limits and analyte retention.
  • Discussion of alternative non-miscible diluents and their reported applications.

Main Results:

  • Sample diluent choice significantly affects quantitation limits and analyte retention in LC-MS.
  • Non-miscible solvents present an alternative approach to traditional diluents.
  • A limited number of studies currently explore these alternative diluents in bioanalysis.

Conclusions:

  • Alternative, non-miscible sample diluents show potential for improving bioanalytical LC-MS methods.
  • Further research and industry adoption are needed to fully realize the analytical importance of these diluents.
  • The field anticipates more applications and publications to validate their utility in bioanalysis.