FEATURED PRESENTATION
Automated Determination of Cannabinoids in Hair by
SPE-GC-EI-MS/MS with Focus on THC-COOH and THC-OH
by Oliver Lerch (GERSTEL GmbH & Co. KG, Muelheim, Germany) and Tobias Kieliba (Institute of Legal Medicine, Medical Faculty, University of Cologne, Cologne, Germany)
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The Speakers
Oliver Lerch, is a scientist in the Analytical Services department at GERSTEL GmbH & Co. KG, Germany. He develops strategic applications especially for the forensic, pharma and environmental market including its oral and written presentation. Oliver has more than 15 years of experience in chromatographic and mass spectrometric techniques with a focus on automation of complex sample preparation workflows.
Tobias Kieliba works as Chief Engineer at the Institute of Legal Medicine in Cologne, Germany, where he is responsible for routine analysis procedures and instrumentation in the forensic toxicology laboratories. His focus is on analytical method development, as well as validation, with an emphasis on optimization and automation.


Well known for their characteristic flavor and fragrance characteristics, terpenes are contained in the derived essential oils of cannabis. In this work, headspace SPME was combined with GC/MS for the quantitative analysis of several selected terpenes in cannabis.
An automated analysis system consisting of a dynamic headspace system coupled with thermal desorption-Gas Chromatography/ Mass Spectrometry was used for fully automated microscale chamber material emission analysis of Spray Polyurethane Foam.
Manual transfer of liquid standards and solutions is usually part of the daily activities throughout the analytical laboratory. The automated transfer by the autosampler of a variety of liquid standards having a wide range of volatility/viscosity properties is discussed.