Application of Microextraction Technologies to Food Determinations (Pawliszyn)

Description:
Thin Film Solid Phase Microextraction (TF-SPME) is an extension of regular SPME. TF-SPME is more sensitive than regular SPME due to the increased surface area and phase volume. The TF-SPME device is a 20 mm x 4.8 mm carbon mesh sheet which is impregnated with a sorptive phase. The TF-SPME devices can be used in headspace or immersive modes. In headspace mode, the TF-SPME device is suspended above a solid or liquid sample in an enclosed vial. In immersive mode, it is placed directly in a liquid sample. In both cases, the sample is agitated by stirring. After extraction, the devices are blotted dry and placed in an empty thermal desorption tube. They are analyzed by thermal desorption GC/MS. This technique is simple to use and requires no solvent.

This talk will focus on the use of TF-SPME for the analysis of a variety of sample types.

Speaker: John Stuff - GERSTEL, Inc
Dr. Stuff’s is currently the Manager of the Analytical Services Group with GERSTEL, Inc. He develops automated methods for sample preparation and introduction for gas chromatography-mass spectrometry. He develops and teaches customer training classes, conducts new product testing, and supports pre- and post-sales opportunities. He provides expert analytical support to a wide customer base including, food, flavor, fragrance, forensic, environmental, and chemical industries.
He received a bachelors degree in Chemistry from U. of Miami, FL, and a Ph.D. in Analytical Chemistry from the University of Massachusetts, Amherst.