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Curtain Flow Column: Optimization of Efficiency and Sensitivity
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Active modulation in neat carbon dioxide packed column comprehensive two-dimensional supercritical fluid
Orjen Petkovic1, Pierre Guibal1, Patrick Sassiat1
1UMR CBI 8231, CNRS-ESPCI Paris, Laboratoire Sciences Analytiques Bioanalytiques et Miniaturisation, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 5, France.
Journal of Chromatography. A
|September 20, 2017
Summary
A new interface for Supercritical Fluid Chromatography x Supercritical Fluid Chromatography (SFCxSFC) allows active modulation, improving solute separation. This advancement enhances peak compression between dimensions, leading to better analytical results for complex samples like oil.
Area of Science:
- Analytical Chemistry
- Chromatography
Background:
- Supercritical Fluid Chromatography x Supercritical Fluid Chromatography (SFCxSFC) is an advanced separation technique.
- Previous SFCxSFC methods lacked efficient modulation between dimensions, limiting separation efficiency.
Purpose of the Study:
- To develop and evaluate a modified interface for active modulation in SFCxSFC.
- To demonstrate the benefits of active modulation, including band compression, for improved chromatographic separation.
Main Methods:
- Development of a novel interface for active modulation in SFCxSFC.
- Application of a Design of Experiments (DOE) to optimize modulation parameters.
- Analysis of a real oil sample using the developed SFCxSFC prototype.
Main Results:
- The new interface enabled independent control of modulation parameters.
- A significant band compression effect for solutes was observed between SFC dimensions.
- Improved chromatographic separation was achieved for a real oil sample compared to previous methods without active modulation.
Conclusions:
- The developed active modulator significantly enhances SFCxSFC performance.
- Peak compression within the modulator is key to achieving better separation.
- This technology offers improved analytical capabilities for complex mixtures.
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