New Automated Thermal Desorption System for Gas Chromatography of Volatile Components in Environmental and Polymeric Samples

Abstract

A new fully automated thermal desorption-gas chromatographic (GC) system has been developed. Dynamic trapping of the thermally desorbed volatile organic components from a given solid sample is followed by selective stripping of the desired range fraction into a GC separation column. The functions of two associated electromagnetic valves, three independent heaters, a cooling fan and the temperature programming of the GC-column oven are all controlled by a microcomputer through an electronic interface. With this analytical system, rapid and sensitive determinations of trace organic components can be carried out for various practical samples such as airborne particulates, carbon blacks, medical plaster sheets and cured insulating polymers.

Pesticides

“…An automated thermal desorption-gas chromatographic system was developed for gas chromatography of volatile components in polymers (78). Dynamic trapping of the thermally desorbed volatile organic components is followed by selective stripping of fractions onto a gas chromatographic column.…”