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KOVATS RETENTION INDICES OF HALOCARBONS ON A HEXAFLUOROPROPYLENE EPOXIDE-MODIFIED GRAPHITIZED CARBON BLACK
Citation:
Bruno, T., K. Wertz, AND M. Caciari. KOVATS RETENTION INDICES OF HALOCARBONS ON A HEXAFLUOROPROPYLENE EPOXIDE-MODIFIED GRAPHITIZED CARBON BLACK. Analytical Chemistry 68(8):1347-59, (1996).
Impact/Purpose:
Journal Article
Description:
The article gives results of measuring Kovats retention indices of 97 halocarbons related to research on alternative refrigerants, propellants, foaming agents, and blowing agents, on a packed-column stationary phase consisting of a 5% mass coating of a low-molecular-weight polymer of hexafluoropropylene epoxide on graphitized carbon black. The measurements on each fluid were made at four temperatures, and the thermal dependence of the indices was modeled with appropriate equations. The modeled values are suitable for the identification of these compounds by gas chromatography on both laboratory and field instrumentation. The values are also useful for optimizing the more sophisticated analyses needed in specific situations. The results indicate that the stationary phase chosen will separate nearly all the fluids of interest. Moreover, there is sufficient spread in the retention index values to facilitate fluid identification. The measurements also appear to fit a qualitative triangular property diagram that has been useful for classifying alternative refrigerant fluids and related compounds.
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KOVATS RETENTION INDICES OF HALOCARBONS ON A HEXAFLUOROPROPYLENE EPOXIDE-MODIFIED GRAPHITIZED CARBON BLACK
KOVATS RETENTION INDICES OF HALOCARBONS ON A HEXAFLUOROPROPYLENE EPOXIDE-MODIFIED GRAPHITIZED CARBON BLACK (PDF, NA pp, 4651 KB, about PDF)