Refinement of Pyrolysis Techniques for Gas Chromatography

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Abstract
The combination of pyrolysis and gas chromatography has until recently been considered a relatively crude analytical technique. However, rapid advances are being made through extensive efforts in apparatus design and more thorough study of operational parameters. A design is described which incorporates newly defined apparatus needs and provides better control of variables. The effects of pyrolysis conditions on pyrograms of polystyrene are presented as an example of how these conditions can be varied and optimized. Under optimum pyrolysis conditions, results are reproducible with relative deviations of about 1%. The value of cryogenic temperature programming in separating products of widely differing volatilities is also demonstrated.

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