On-line coupling of packed column supercritical fluid chromatography with multiple wavelength detector and radioactivity flow-through detector |
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Authors: | P Lembke H Engelhardt R Ecker |
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Institution: | (1) Institut für Angewandte Physikalische Chemie, Universität des Saarlandes, 66041 Saarbrücken, Germany;(2) Hewlett Packard, 76337 Waldbronn, Germany |
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Abstract: | Summary The coupling of packed column supercritical fluid chromatography with a commercial Radioactivity Flow-Through Detector for the sensitive and highly selective detection of radioactive nuclides (e.g.14C is described. The radioactivity flow-through detector showed no baseline shift when pressure or modifier (methanol) gradients were applied. The detector cell was pressure resistant even at high flow rates, over a period of approx. 100 hours and showed no leakage problems even at 40°C, 340 bar, 4.0 ml/min and a modifier content up to 20%. |
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Keywords: | Supercritical fluid chromatography Packed column SFC Radioactivity flow-through detector Multiple wavelength detector Modifier gradient |
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