Summary
To match the need of high efficiency capillary column (plate number N2, Plate height H2 and carrier gas linear velocity U2), a new high efficiency packed column (N1, H1 and U1) at high carrier gas velocity with small capacity factor has been developed in the light of theoretical discussion of factors effecting the column efficiency utilization ratio.
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Zhang, J., Lin, B. & Lu, P. A new type of two-dimensional packed + capillary column GC system. I. Theory. Chromatographia 23, 487–491 (1987). https://doi.org/10.1007/BF02309416
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DOI: https://doi.org/10.1007/BF02309416