https://pure.tue.nl/ws/files/1480839/617908.pdf

Microcolumn liquid chromatography: Instrumentation, detection and applications

Fused silica capillaries of different diameters were slurry-packed with an identical sorption material and evaluated chromatographically. The extent of band broadening was evaluated fluorometrically at different column lengths, together with porosity measurements obtained from a fluorescence-quenching marker. Kinetic analysis of the plate-height vs velocity data reveals that the inner diameter is a very important variable in the preparation of such packed columns. Extremely high efficiencies were obtained with columns of the smallest diameter (44 ..mu..m).

Separation efficiency of slurry-packed liquid chromatography microcolumns with very small inner diameters.

Amino acids and peptides, from both standard solutions and biological samples, were successfully reacted with 3-(4-carboxybenzoyl)-2-quinolinecarboxaldehyde, at low concentration, to form highly fluorescent isoindole derivatives. The formed mixtures are effectively separated by high-performance capillary electrophoresis and their constituents detected by their laser-induced fluorescence signals. The minimum detectable quantities in the low attomole (10(-18) mol) range are encountered.

Design of 3-(4-carboxybenzoyl)-2-quinolinecarboxaldehyde as a reagent for ultrasensitive determination of primary amines by capillary electrophoresis using laser fluorescence detection

Refractive Index Detector Absorption Detectors for High-Performance Liquid Chromatography FTIR Detection Indirect Absorbance Detectors Fluorometric Detection Polarimetric Detectors Detection Based on Electrical and Electrochemical Measurements Mass Spectrometry as an On-Line Detector for HPLC Miscellaneous Methods Index.

Detectors for liquid chromatography

Capillary electrophoresis with UV-laser-excited native fluorescence has been employed for ultrasensitive determination of polycyclic aromatic hydrocarbons, including anthracene, phenantheren, benz[a]anthracene, methylanthracene, pyrene, fluoranthene, and perylene. The separation is based on solvophobic association of the analytes with tetraalkylammonium ions in miwed acetonitrile/water solvent. With both near-UV (325-nm) and deep-UV (257-nm) laser excitation, background fluorescence from the fused silica capillary and the nonaqueous electrolyte was the limiting factor in detection sensitivity

Ultrasensitive fluorescence detection of polycyclic aromatic hydrocarbons in capillary electrophoresis

Laser fluorimetry for capillary column liquid chromatography: high-sensitivity detection of derivatized biological compounds

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Laser fluorimetry for capillary column liquid chromatography: high-sensitivity detection of derivatized biological compounds