| Autor: |
Ballinger, Jack T., Bartels, Terry T., Taylor, John H. |
| Zdroj: |
Journal of Chromatographic Science; May 1968, Vol. 6 Issue: 5 p295-295, 1p |
| Abstrakt: |
The purpose of this work was to develop a procedure to trap gas chromatographic fractions directly in an infrared spectrophotometric cell. A cell was fabricated which could be used as a GC fraction trap and as an IR gas cell. The cell-trap can be cooled with liquid nitrogen or any other suitable coolant for trapping and can be heated to 200°C for analyzing its contents. Trapping efficiency at flow rates of 25 to 150 ml/min were investigated using concentrations of 1.0 to 0.06 microliter of acetone. At optimum conditions, the trapping efficiency was better than 90 per cent. The cell has a path-to-volume ratio of 0.8, and, using a beam condenser, transmits 70 per cent of the available light. This cell-trap has proven to be a very useful coupling device. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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