Options for veterinary drug analysis using mass spectrometry

Area of Science:

• Food Safety and Veterinary Medicine
• Analytical Chemistry
• Mass Spectrometry

Background:

• Strict EU regulations govern the use of veterinary drugs in animal breeding for food safety.
• Control systems have been established to ensure compliance with these regulations.
• Current strategies involve targeted analysis of drug residues and metabolites in various matrices.

Purpose of the Study:

• To review and discuss various mass spectrometry (MS) strategies for veterinary drug residue analysis.
• To illustrate the application of different MS approaches in residue analysis.
• To examine the balance between analytical challenges and available MS technologies.

Main Methods:

• Review of single MS, multidimensional MS, high-resolution MS, and isotope ratio MS.
• Discussion of ionization techniques (e.g., ESI) and mass analyzers (e.g., triple quadrupole, TOF).
• Consideration of sample preparation, derivatization, chromatographic separation, and data analysis.

Main Results:

• Mass spectrometry is the primary confirmatory method for unambiguous identification of residues at trace levels.
• Various MS strategies offer different balances of specificity, sensitivity, and applicability.
• Key challenges include ion suppression, resolution, and adapting methods to evolving regulations.

Conclusions:

• Mass spectrometry is crucial for enforcing veterinary drug regulations and ensuring food safety.
• The choice of MS strategy depends on the specific analyte, matrix, and concentration.
• Future trends in chromatography and data analysis will further enhance residue detection capabilities.