2019 NACRW Short course

Sunday, July 21, 2019 8:30 a.m. to 4:30 p.m. Tuition Fee: $300 (lunch provided by NACRW)

“Using Gas Chromatography Mass Spectrometry for the Analysis of Pesticides in Food”

Instructor:   Dr. Brian Quinn, Visiting Researcher, Queens University, Belfast

Click here to register online for the Short Course 

Description of Course:


· Introduction to analysis of food samples by gas chromatography

  • Course overview and learning objectives

· Food sample preparation options and techniques

  • Sample collection techniques and schemes
  • Sample preparation before extraction
  • Extraction & clean-up
  • Modifications to various approaches

  · Sample introduction into the GC/MS

  • GC inlets
  • GC inlet liners
  • Choosing sample introduction for your method

· Gas Chromatography

  • Basics of chromatography and compound separation
  • Choosing the correct column for your application
  • GC/MS transfer lines

· Mass spectrometry

  • MS ionization and quantitation
  • MS ion enhancement and suppression in food samples
  • Choosing internal and surrogate standards for your analysis
  • Choosing the correct instruments for your application  

· Advanced / Enhanced GC/MS Configurations

  • Examples: HR/MS, Low Pressure, etc. 
  • Future Developments in GC/MS

· Performance Evaluation

  • Purpose and importance of Performance Criteria
  • Examples of Applying Performance Criteria to determine data quality
  • Troubleshooting your instrument/extraction techniques when things go awry
  • Maintaining your instrument

· Summary and evaluation

  • Student question time
  • Student evaluation
  • Instructor evaluation

Instructor Bio


Brian Quinn received a BA in biology from the University of Missouri-Columbia, and an MS and PhD in Environmental Engineering Sciences from the University of Florida. He has over 25 years of experience conducting trace residue analysis in a wide variety of substrates for environmental and human toxicological projects. Dr Quinn started his career working with environmental fate and partitioning of agrochemicals in contract laboratories, before moving on to pesticide residue analysis in fruits and vegetables in the IR-4 Program at the University of Florida. His graduate research involved the study of endocrine disrupting compounds derived from pulp and paper mill effluents. Dr Quinn undertook his post-doctoral studies at the USDA/ARS Center for Medical, Agricultural and Veterinary Entomology, where he conducted research on potential mosquito and fly attractants, repellents, and adulticides. His next research endeavor centered on analysis of human breath for medication adherence studies, blood alcohol experiments, and anesthesiology drugs. This research involved comparing data from an experimental mini-gas chromatograph to TD/GC/MS and high-resolution LC/MS. Currently, Dr. Quinn is a Visiting Researcher at Queens University in Belfast and a private consultant.