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Scanning ultraviolet detection in capillary supercritical fluid chromatography

✍ Scribed by Scot R. Weinberger; Danyl J. Bornhop

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
477 KB
Volume
1
Category
Article
ISSN
1040-7685

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✦ Synopsis

A rapid-scanning ultraviolet-visible (UV-vis) detector was interfaced successfully with capillary supercritical fluid chromatography (SFC). The pseudo on-column detection approach was used to produce a detector dead volume of less than 60 nL. High sensitivity (low picogram detection limits), a large linear dynamic range (greater than three orders of magnitude in concentration), and full spectral scanning were achieved. Many of the limitations commonly encountered when incorporating a photodiode array (PDA) into a capillary-based separation scheme were overcome.

An SFC separation of several pesticides and caffeine illustrate the utility of the detector-SFC system.

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