Relationships for modeling the performance of rectangular gas chromatographic columns
Relationships for modeling the performance of rectangular gas chromatographic columns
复制标题
DOI：
10.1002/mcs.10008
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
G. Spangler
中科院分区：
文献类型：
--
作者：
G. Spangler
Golay's theory for open tubular GC columns was recently revised for application to rectangular GC columns. The HETP was found to be the same as for open tubular columns provided the average linear velocity, ū, and the resistance-to-mass-transfer-in-the-gas-phase, CM, are redefined. In this paper, a simplified expression for the average linear velocity is derived and used to fit a variety of exit flow data collected on microfabricated rectangular GC columns. Also the resistance-to-mass-transfer-in-the-gas-phase is studied and the results compared to earlier relationships derived by Giddings, Chang, Myers, Davis and Caldwell, and by Golay. The three theories agree, with the present theory predicting a slightly higher value for CM for large retention indices. The slightly higher value for CM is attributed to the geometry for the rectangular column that is better modeled with the present theory than the former theories. © 2001 John Wiley & Sons, Inc. J Micro Sep 13: 285–292, 2001
