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Proceedings Paper

Quantitative analysis of aromatic compounds by laser-induced fluorescence spectroscopy
Author(s): Gerd Marowsky; Frank Lewitzka; Uwe Buenting; Matthias Niederkrueger
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Paper Abstract

We introduce a fiber optical sensor system that can be applied to environmental analysis. The compact system is based on laser-induced, time-resolved fluorescence emission spectroscopy. It uses a miniaturised all solid state laser which is operated at 266 nm as the excitation source and a spectrograph/image intensifier/CCD-camera for time-resolved detection of the fluorescence. The versatility of the instrument is demonstrated by the analysis of various substances using multivariate calibration techniques. Xylene could be analysed in natural water samples in the presence of other mono-aromatics with a detection limit of 10 ?g/l. The fluorescence tracer sulforhodamine G was analysed in river water with a detection limit of 10 ng/l. Furthermore the system is able to detect oil contaminations in soil in the concentration range of 100 ppm and above.

Paper Details

Date Published: 26 February 2001
PDF: 6 pages
Proc. SPIE 4205, Advanced Environmental and Chemical Sensing Technology, (26 February 2001); doi: 10.1117/12.417453
Show Author Affiliations
Gerd Marowsky, Laser-Lab. Goettingen e.V. (Germany)
Frank Lewitzka, Laser-Lab. Goettingen e.V. (Germany)
Uwe Buenting, Laser-Lab. Goettingen e.V. (Austria)
Matthias Niederkrueger, Laser-Lab. Goettingen e.V. (Germany)

Published in SPIE Proceedings Vol. 4205:
Advanced Environmental and Chemical Sensing Technology
Tuan Vo-Dinh; Stephanus Buettgenbach, Editor(s)

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