Tunable
Column Selectivity (TCS) GC System
|
20
|
||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
The Tunable Column Selectivity (TCS) GC system allows users to adjust the selectivity of the dual column ensemble by dynamically varying the temperatures of the two series-coupled columns. The first column, located in Oven #1 (15-meter MXT-1) is non-polar, and the second column, located in Oven #2 (30-meter MXT-wax) is very polar. By controlling the temperature and temperature ramp of each column independently, the overall separation can be controlled, thus tuning the overall polarity of the dual column ensemble. The TCS is configured with an FID detector and single channel PeakSimple data system, a built-in air compressor, which can provide the FID combustion air and air carrier, and dual On-column injectors. | |||||||||||||||||||||||||||
As shown in the chromatograms at right, a sample of BTEX + bromoform is separated using the same temperature program on the non-polar column, while varying the temperature program of the polar column.
The bromoform peak at 150oC is nicely separated from the o-Xylene (top chromatogram), but at 180oC the bromoform peak blends into the o-Xylnene (middle chromatogram).
In the bottom chromatogram, the polar column is temperature ramped to yield a dramatic separation of the bromoform/o-Xylene, as well as near baseline resolution of m- and p-Xylene. This separation is normally not possible with any other known column. |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Tunable Column
Selectivity (TCS) GC System
|
20
|
||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
|