Extension of Golay plate height equation for open-tubular columns

被引:10
作者
Blumberg, Leonid M. [1 ]
机构
[1] Advachrom, POB 1243, Wilmington, DE 19801 USA
关键词
Plate height; OTC; PLOT columns; LIQUID-CHROMATOGRAPHY; THEORETICAL PLATE; STATIONARY PHASES; FILM THICKNESS; POROUS LAYER; B-TERM; DIFFUSION; EFFICIENCY; EQUIVALENT; PARTICLES;
D O I
10.1016/j.chroma.2017.10.032
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Golay plate height equation with its B-term equal to 2D(m)/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(D-m + kDs)/u (D-s and k are the solute net diffusivity in the stationary zone and the retention factor, respectively) which can be substantially larger than 2D(m)/u. A simple proof is provided together with other adjustments in Golay equation, and its interpretation. (C) 2017 Elsevier B.V. All.rights reserved.
引用
收藏
页码:303 / 306
页数:4
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