Theoretical approximation for the linear flow of carrier gas through a rectangular gas chromatographic column.
A simple relationship for the average linear velocity of carrier gas flowing through a rectangular gas chromatographic column is derived. Since the relationship agrees remarkably well with published experimental data taken from a variety of sources, it should be very useful in practical application. This is particularly true for micro-fabricated etched silicon columns that often have a rectangular cross-section. Knowledge of the average linear velocity facilitates calculation of the height equivalent to a theoretical plate (HETP), a measure of resolution for the column.
Spangler
Glenn E
GE
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