Extra Column Dispersion - Dispersion in the Detector Sensor Volume > The Effect of Viscous Flow on Dispersion in a Detector Sensor > Page 39

The Effect of Viscous Flow on Dispersion in a Detector Sensor

Scott and Simpson (19) also measured the overall effect of dispersion in sensor cells (that is both that due to Newtonian Flow and that due to sensor volume capacity) by simulating a UV adsorption cell used in LC from simple short cylindrical tubes. The results they obtained are shown in table 4.

Table 4. Dispersion in Sensor Cells

 

Cell Volume Cell I.D. Cell Length Vol.Variance Equi.Peak Vol.
0.59 (ml) 0.5 mm 3.0 mm 0.45 (ml2) 2.68 (4s) (ml)
1.96 (ml) 0.5 mm 10.0 mm 1.19 (ml2) 4.36 (4s) (ml)
2.75 (ml) 1.0 mm 3.5 mm 1.19 (ml2) 4.36 (4s) (ml)
7.85 (ml) 1.0 mm 10.0 mm 4.92 (ml2) 8.88 (4s) (ml)

 

The measurements were made on a linear reconstruction of the cell.