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Operational theory and instrumental implementation of the thermal gradient programmed gas chromatography (TGPGC) mode of analysis

1992; Wiley; Volume: 15; Issue: 12 Linguagem: Inglês

10.1002/jhrc.1240151205

1521-4168

Wayne A. Rubey,

Mass Spectrometry Techniques and Applications

Abstract Thermal gradient programmed gas chromatography (TGPGC) separations involve the application of three‐dimensional thermal field programming. The operational aspects associated with TGPGC are such that rapid GC analyses can be achieved for complex and broad‐volatility‐range samples using open tubular columns with high thermal compliance, physical compactness, and geometric conformity. Elapsed times for TGPGC analyses of complex samples have ranged from 50 to 300 s. The application of rapidly changing thermal fields (or temperature surfaces) in TGPGC is accomplished through the use of a column sheath assembly. Recent research has centered upon different column sheath assembly designs and instrumental implementation of the TGPGC mode of operation. The instrumental implementation of the TGPGC mode for conducting GC and GC‐MS analyses places special demands upon the design and performance of numerous operational aspects of the system, e.g. , the response‐time characteristics associated with analyte detection and the analytical output signal handling capabilities.