Results 51 to 60 of about 90 (85)
Some of the next articles are maybe not open access.
Supercritical fluid chromatography of glycosphingolipids
Analytical Biochemistry, 1988Glucose polymers and three classes of glycosphingolipids were permethylated and studied by supercritical fluid chromatography using a DB-5 coated capillary columns and carbon dioxide as the mobile phase. Column restrictors were fabricated at each column tip as described by E.J. Guthrie and H.E. Schwartz (1986, J. Chromatogr. Sci. 24, 236).
Kuei, J. +2 more
openaire +3 more sources
Supercritical fluid chromatography
Analytica Chimica Acta, 1988Theory and principles of SFC the emergence and instrumentation of SFC selection of conditions for a SFC separation open columns or packed columns for SFC - a comparison comparison of high temperature GLC and SFC SFC-MS SFC-MS and SFC in the pharmaceutical industry fractionation by micro-SF extraction and SFC.
Roger M. Smith, Alan Townshend
openaire +4 more sources
Supercritical fluid chromatography
Nature, 1987Supercritical fluid chromatography is opening up new avenues in the analysis of high molecular weight, polar and thermally labile biochemicals.
K. E. Markides, M. L. Lee
openaire +2 more sources
Chromatography with supercritical fluids
Analytica Chimica Acta, 1967Abstract Molecular interactions in the gas phase may be utilized for enhancing the volatility of substances in gas chromatography. A study of the effect of pressure on equilibria in GLC revealed that at higher pressures these interactions are quite appreciable, especially near the critical point.
G.W.A. Rijnders, S.T. Sie
openaire +2 more sources
Supercritical fluids chromatography for impregnation optimization
The Journal of Supercritical Fluids, 2000Supercritical impregnation technique of polimeric matrix is going to have a very high interest in the pharmaceutical field. The possibility to obtain a final drug release product totally uncontaminated by organic solvents is a noticeable progress for the pharmaceutical factories. Two main steps are involved in the impregnation studies: the knowledge of
CORTESI, ANGELO +4 more
openaire +3 more sources
Journal of Chromatography A, 1991
Packed-column supercritical fluid chromatography has been used for the separation of mixtures of sulphonamides on silica and amino-bonded stationary phases utilizing carbon dioxide with methanol modifier as the mobile phase. The effect of modifier concentration, column pressure and modifier identity on retention was also studied.
John R. Perkins +3 more
openaire +2 more sources
Packed-column supercritical fluid chromatography has been used for the separation of mixtures of sulphonamides on silica and amino-bonded stationary phases utilizing carbon dioxide with methanol modifier as the mobile phase. The effect of modifier concentration, column pressure and modifier identity on retention was also studied.
John R. Perkins +3 more
openaire +2 more sources
Chromatography with Supercritical Fluids (Supercritical Fluid Chromatography, SFC)
1994In a chromatographic separation a mixture of substances is transported by a carrier, called mobile phase, along a not moving surface, called stationary phase. Chromatography is therefore a separation based on two mass separating agents: the mobile phase and the stationary phase. Between the two phases mass transfer processes take place, which lead to a
openaire +2 more sources
Chromatography with Supercritical Fluids
Angewandte Chemie International Edition in English, 1978AbstractChromatography with supercritical fluids unites the features of both gas chromatography and liquid chromatography, yet retains special characteristics of its own. The diffusion coefficient and particularly the viscosity of fluid phases may approach values for low‐pressure gases, while the solvent power may be similar to that of liquids. However,
openaire +2 more sources
Journal of Chromatography A, 2014
The development of chiral separation methods in pharmaceutical industry is often a very tedious, labour intensive and expensive process. A trial-and-error approach remains frequently used, given the unpredictable nature of enantioselectivity. To speed-up this process and to maximize the efficiency of method development, a generic chiral separation ...
De Klerck, Katrijn +2 more
openaire +4 more sources
The development of chiral separation methods in pharmaceutical industry is often a very tedious, labour intensive and expensive process. A trial-and-error approach remains frequently used, given the unpredictable nature of enantioselectivity. To speed-up this process and to maximize the efficiency of method development, a generic chiral separation ...
De Klerck, Katrijn +2 more
openaire +4 more sources
Preparative supercritical fluid chromatography
Journal of Chromatography A, 1990Abstract Preparative SFC has been investigated since the first development of SFC in order to collect pure components for identification (1962) and new devices for sample collection have been investigated. During the 1980s, SFC has come of age as an analytical tool complementary to GC and HPLC. Similarly, preparative SFC is being developed as a large-
Michel Perrut, C. Berger
openaire +2 more sources