Remote scanning ultraviolet detection for capillary gas chromatography

A remote flow cell has been interfaced to a scanning uv‐visible absorbance detector for the detection of gas chromatography (GC) analytes. The unique optical bench, detection scheme, and thermal control allow low‐noise operation at flow cell temperatures of 350 °C. Noise of 1×10−5 a.u. (peak to peak...

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Bibliographic Details
Published in:Review of scientific instruments 1992-01, Vol.63 (1), p.191-201
Main Authors: Bornhop, Darryl J., Hlousek, Louis, Hackett, Murray, Wang, Houle, Miller, Glenn C.
Format: Article
Language:English
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Summary:A remote flow cell has been interfaced to a scanning uv‐visible absorbance detector for the detection of gas chromatography (GC) analytes. The unique optical bench, detection scheme, and thermal control allow low‐noise operation at flow cell temperatures of 350 °C. Noise of 1×10−5 a.u. (peak to peak over a 1‐min period) and drift at the 1×10−4 a.u./h level facilitate detection of coumarin in the gas phase at 40 pg/s. Flow cell volume was optimized for use with capillary GC columns. An effective band pass of
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1142956