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Field Portable Low Temperature Porous Layer Open Tubular Cryoadsorption Headspace Sampling and Analysis Part II: Applications

Published

Author(s)

Thomas J. Bruno, Jessica Nichols

Abstract

In previous work, dynamic headspace vapor collection on short, porous layer open tubular (PLOT) capillary columns maintained at low temperature was introduced. In this paper, we extend this approach with the introduction of a small in situ pyrolysis platform that provides for rapid heating and rapid vapor capture for a wide variety of samples. We refer to the approach as pyro-PLOT-cryo. The pyrolysis platform is made from two small copper lead wires that hold a basket formed from small diameter, high resistance stainless steel or NiCr wire. The basket is formed to accept a small sample, the mass of which can typically range from 0.2 to .05 mg. The pyrolysis is performed by use of a resistor capacitor circuit of the type used in spot welders. We have provided examples of the application of this technique with the analysis of facial cosmetics, plastic explosives, organometallic gasoline additives, polymers, and in microscale chemical reactions. Additional modifications and future work are also discussed.
Citation
Journal of Chromatography A
Volume
1429

Keywords

Headspace analysis, gas chromatography, PLOT-cryoadsorption, pyrolysis.

Citation

Bruno, T. and Nichols, J. (2015), Field Portable Low Temperature Porous Layer Open Tubular Cryoadsorption Headspace Sampling and Analysis Part II: Applications, Journal of Chromatography A, [online], https://doi.org/10.1016/j.chroma.2015.12.014 (Accessed April 17, 2024)
Created December 8, 2015, Updated November 10, 2018