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Inlet Systems
Split/splitless capillary inlet
Figure 6-9
Needle
(a)
Carrier Gas
(b)
(c)
(d)
The Solvent Effect
The solvent effect is described in great detail elsewhere: see Grob, K. and
Grob, K., Jr., Journal of Chromatography, 94, page 53 (1974); Grob, K.
and Grob, G., Chromatographia, 5, page 3 (1972).
To reconcentrate sample components via the solvent effect, oven
temperature must be low enough so solvent remains at the head of the
column for a sufficiently long time period. A good guideline is to have the
column 10 to 30 C below the solvent boiling point. Table 6•2gives boiling
points for some common solvents, along with suggested initial oven
temperature ranges to use the solvent effect efficiently.
Low Volatility Solute
High Volatility Solute
Column
115
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Troubleshooting
