Summary
Al2O3-PLOT columns are used with great advantage for the analysis of volatiles, because of the increased capacity ratio and selectivity compared to WCOT-columns. Their applicability is limited to relatively non-polar components with relatively low boiling points i. e. eluting before n-decane.
In the analysis of the halocarbons in stratospheric air, the decomposition of certain compounds was observed. In this study the stability of a number of volatile organic compounds was determined in function dependence of the column temperature using a two-dimensional GC-system.
A possible reaction mechanism for the decomposition is proposed and confirmed for several chlorinated ethanes.
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Noij, T., Rijks, J.A. & Cramers, C.A. Problems caused by the activity of Al2O3-PLOT columns in the capillary gas chromatographic analysis of volatile organic compounds. Chromatographia 26, 139–141 (1988). https://doi.org/10.1007/BF02268138
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DOI: https://doi.org/10.1007/BF02268138