Main Title |
Thermal Modulation Interface between Supercritical Fluid Extraction and Supercritical Fluid Chromatography. |
Author |
Mitra, S. ;
Wilson., N. K. ;
|
CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. |
Publisher |
c1990 |
Year Published |
1990 |
Report Number |
EPA/600/J-90/219; |
Stock Number |
PB91-117192 |
Additional Subjects |
Modulators ;
Temperature ;
Desorption ;
Adsorption ;
Laboratory equipment ;
Extraction ;
Supercritical flow ;
Aromatic polycyclic hydrocarbons ;
Reprints ;
Supercritical fluid chromatography
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-117192 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
6p |
Abstract |
A thermal modulator that can act as an interface between supercritical fluid extraction and supercritical fluid chromatography was developed and tested. The modulator was made of a short segment of a fused-silica capillary column, which was coated on the outside with electrically conductive paint so that it could be heated rapidly by a pulse of electric current. An equivalent of an injection is made internally within a flowing stream containing the sample by alternately heating and cooling the modulator, rather than by introduction through an injection port or a valve. |