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Extension of Golay plate height equation for open-tubular columns
1Advachrom, P.O. Box 1243, Wilmington, DE 19801, USA.
Abstract:
Golay plate height equation with its B-term equal to 2Dm/u (Dm is molecular diffusivity of a solute in the carrier gas and u is the gas velocity) has been developed for WCOT (wall-coated open-tubular) GC columns with liquid stationary phases. In a more general case of OTC (open tubular columns) such as the PLOT (porous layer open-tubular) columns and others, the B-term is 2(Dm+kDS)/u (DS and k are the solute net diffusivity in the stationary zone and the retention factor, respectively) which can be substantially larger than 2Dm/u. A simple proof is provided together with other adjustments in Golay equation, and its interpretation.
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