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Column, capillary minimum HETP

The B term in capillary adsorption columns is smaller than in packed capillary columns and the minimum HETP ,jn is lower for capillary columns. [Pg.71]

The form of the HETP curve for a capillary column is the same as that for a packed column and exhibits a minimum value for (H) at an optimum velocity. [Pg.130]

H, HETP H is the height equivalent to a theoretical plate also called the equilibrium step height. It is a measure of column efficiency, H is approximately 0.5 mm in a GC capillary column and 0.01 mm in HPLC. H = L/N where L is column length, N is number of theoretical plates in a column. /fcALC is the practical plate height of a column, Z/ min is the theoretical minimum plate height at optimmn linear velocity and maximum column efficiency, and may be calculated in terms of the retention or capacity factor of a column see A eir, van Deemter equation, capacity factor and coating efficiency. [Pg.532]


See other pages where Column, capillary minimum HETP is mentioned: [Pg.140]    [Pg.576]    [Pg.140]    [Pg.688]    [Pg.76]    [Pg.504]    [Pg.144]   
See also in sourсe #XX -- [ Pg.217 ]




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