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16/07/2024 -5368 days left
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Pre-symposium vendor seminar, November 3, 2009 (16:00–18:00)

Most Advanced Comprehensive GCxGC Solutions Utilizing TOF MS

Sponsored by LECO & TOF

GCxGC TOF MS for food flavors analysis
Prof. Henryk Jelen, Poznan University of Life Sciences, Poland

Analysis of flavor compounds in food is a challenging task due to their chemical diversity, low concentrations and matrix interferences. Among hundreds of volatile compounds in food products analyst searches for key odorants. Peak capacity provided by comprehensive gas chromatography GCxGC opens new perspectives in separation of volatile compounds and its hyphenation with high speed mass spectrometry with an aid of deconvolution provides reliable identification of analytes. In the presentation a comparison between 1D GC and GCxGC will be discussed and applications of GCxGC-TOF MS in the selected food flavor applications will be provided: analysis of lipid oxidation products, volatile phenols in beer, wine flavor compounds.

QuEChERS and GCxGC-TOFMS for the Analysis of Pesticides in Dietary Supplements
Mr. Jack Cochran, Restek, USA

Dietary supplements are concentrated blends of a variety of botanical substances that now must be tested for pesticides. The QuEChERS sample preparation method offers a rapid way to prepare these samples for analysis, but the extracts can be so complex as to make trace-level pesticide determinations problematic. GCxGC-TOFMS has the capability to provide the separation power and sensitivity necessary for the task. This presentation will discuss the QuEChERS method, including extract cleanup by dispersive solid phase extraction, and compare GC-TOFMS and GCxGC-TOFMS, for dietary supplement extract pesticide analysis.

Separation science GCxGC TOF MS case study: Edible oil – What is in it?
Dr. Sjaak de Koning, European application manager Separation science, LECO, Germany

Edible oils are analysed on a daily basis both in routine as for research. One can think here on target analysis of potentially poisoning compounds like 3-MCPD, group type analysis of trans-fats or fingerprinting analysis on flavours. Due to the often complexity of these type of analysis, is GCxGC nowadays more and more implemented as the method of choice. This contribution will give an overview of the three mentioned applications, showing the overwhelming separation power of GCxGC TOF MS in combination with the powerfull ChromaTOF software for data acquisiton and processing.

Recent development in GCxGC TOF MS technique
Tomas Kovalczuk, Separation science specialist, LECO, Czech Republic

Although, the mass-spectrometry became the method of choice in different types of analyses, there is a permanent demand for minimizing the costs of analyses. In GCxGC technique several approaches to reduce the expenses can be considered, especially taking in account the consumables required for GCxGC modulation, e.g. liquid and gaseous nitrogen. The presentation will not demonstrate only the potential of novel consumable-free modulator, but also focusing on the advanced data handling such as mathematical filtering of MS spectra (called scripting), and others.

Register for LECO seminar via the on-line Registration form for Vendor seminars & Workshops

Institue of Chemical Technology International Association of Environmental Analytical Chemistry RIKLT
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