## Abstract A standard direct introduction capillary interface is used for the SFCโMS analysis of polymer additives. The system is optimized with respect to the position of the restrictor, probe tip temperature, and ion source temperature. Elโlike chargeโexchange spectra are obtained. Cl using ammo
The application of capillary SFC, packed column SFC, and capillary SFC-MS in the analysis of controlled drugs
โ Scribed by MacKay, Graham A. ;Reed, Graham D.
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 465 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0935-6304
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โฆ Synopsis
Abstract
Multiโcomponent mixtures of controlled drugs, drug impurities, and adulterants have been analyzed by capillary SFCโFID, packed column SFCโUV, and capillary SFCโMS. Isocratic packed column SFC has been performed with binary and ternary mobile phases using a single syringe pump. The combination of capillary SFC and double focusing MS is described with reference to MS source pressures and the spectra obtained. The use of negative temperature programming in SFC is described.
๐ SIMILAR VOLUMES
## Abstract Retention indices (RI) for a variety of probe compounds were determined on 50โฮผm i. d. columns coated with eight different stationary phases under density programmed SFC conditions at isothermal temperatures of 80 and 150ยฐC. RI values were strongly dependent on temperature for polar pro
## Abstract The quantitative effects on chromatographic resolution of FTIR flowโcells for detection in capillary SFC have been determined. A suitably designed cell with a volume of 500 nl was shown to cause only modest broadening of chromatographic peaks obtained from the surfactant mixture Triton
## Abstract The solvent venting injection technique has been tested for 1โฮผL injections of lipids in open tubular column SFC. No sample loss during solvent venting was experienced with a 7โm precolumn at elevated temperatures. The solvent venting technique has also been combined with gas purging to