counter-current distribution, various kinds of chromatography and electrophoresis. For the most part these techniques permit drug metabolism to be studied quite effectively with relatively simple and inexpensive apparatus. Paper and thin layer chromatography have received particular emphasis since very small ...
Reaction system resolution was by column chromatography on anion resins in the borate form. Assay for 1, 2, and 3 was by continuous automated colorimetry of column effluent using orcinol/sulfuric acid as a reagent. D-Allose and D-... DJ Maclaurin,JW Green - 《Canadian Journal of Chemistry》...
A chromatography cartridge stabilized by radial compression is disclosed with integral distributors each composed of two abutting thin plates, one with generally radial slits and the other with radially-displaced apertures. Also disclosed are a replaceable filter cap which fits in the cartridge inlet an...
Peak symmetry as a measure of column performance in high-performance liquid chromatography ChromatographiaBrownlee, R. G.; Higgins, J. W. Peak Symmetry as a Measure of Column Performance in High-Performance Liquid Chromatography, Chromatographia 1978, 11, 567-572.R.G. Brownlee and J.W. Higgins...
but the difference seems to be too large. An alternative explanation is that in the ZLC, rather than observing individual crystals, aggregates are formed. This is consistent with the SEM images in the paper and with the fact that SBA powders are very sticky. To confirm this hypothesis it wo...
B Gustavsson,I Betnér - 《Journal of Chromatography A》 被引量: 75发表: 1990年 Determination of polyamines in biological materials by HPLC with 9-fluorenylmethyl chloroformate precolumn derivatization A fully automated precolumn dericatization method for the determination of primary and secondary ami...
* LOD: Limit of detection; LOQ: Limit of quantification; UHPLC: ultra-high performance liquid chromatography. As outlined in Table 1, the use of a normal phase mobile phase preparation was previously reported to lead to issues with quality control analysis, due to the increased probability of ...
The stabilized capacitive plasma (SCP) is a 27 MHz discharge in helium at atmospheric pressure used as atomic emission source for element specific detection (ESD) in gas chromatography. The discharge is sustained in a liquid-cooled fused-silica tube surrounded by two annular electrodes. The introdu...
For example, in the case where the extraction media is a chromatography bead (e.g., agarose or sepharose), the interstitial volume of the bed constitutes the solvent accessible volume between the beads, as well as any solvent accessible internal regions of the bead, e.g., solvent accessible...
Despite efforts to identify the byproducts using HPLC and gas chromatography (GC), the substrates generated with the rest of the charge passed during the electrolysis remain unclear. In the reaction with benzyl alcohol, the current also increased at higher potentials, suggesting that the applied ...