December 15, 2011 11 am EST (North America)
Determining low-level pesticide residues in difficult matrices such as cut rose leaves, powdered dietary supplements, and marijuana presents challenges both for sample preparation and analysis methods. This complimentary e-seminar will explore how QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe) sample preparation and cartridge solid phase extraction (SPE) sample clean-up can be combined with comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GCxGC-TOFMS) to create a powerful tool for pesticide residue analysis, enhancing both selectivity and sensitivity as much as possible for non-targeted analysis.
Presented by Dr. Julie Kowalski, Senior Innovations Chemist, Restek Corporation.
The discussion will include:
- The development and optimization of sample preparation, including extraction and clean-up, for cut roses
- The importance of identifying pesticides in dietary supplements, which may contain natural products exposed to pesticides
- The potential presence of pesticide residues in marijuana, which has been legalized for medical usage in a number of states but offers no safety assurances to patients
- How data quality can be significantly improved through better retention and separation of target compounds
