Speaker: Kaveh Jorabchi, Georgetown University
Topic: Plasma-based ion sources for element-guided detection and standard-free quantitation of compounds
Date: Monday, October 19, 2026
Time: 6:15 pm Dinner, 7:15 pm Presentation
Location: Shimadzu Scientific Instrument, Inc. Training Center 7100 Riverwood Drive, Columbia, MD 21046 (Directions)
Dinner: Please RSVP to Mamie Lih (mamielih@gmail.com) by Friday, October 16 if you will be attending dinner.
Abstract: Nontargeted methods have become indispensable for characterizing bio- and environmental transformations of compounds. However, quantitation remains challenging because ionization efficiency is dependent on molecular structure, and authentic standards may not be available in many cases. Here, we present new developments in plasma-based ion sources that offer elemental detection on molecular MS platforms, rendering heteroatoms in molecules intrinsic nontargeted detection and quantitation tags. We will discuss technology development as well as biomedical and environmental applications of detecting F, Cl, S, and P, which are prevalent heteroatoms in pharmaceuticals and environmental contaminants.

