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Applied Optics

Applied Optics


  • Vol. 42, Iss. 33 — Nov. 20, 2003
  • pp: 6739–6746

Tunable ultraviolet laser-induced fluorescence detection of trace plastics and dissolved organic compounds in water

Vasanthi Sivaprakasam and Dennis K. Killinger  »View Author Affiliations

Applied Optics, Vol. 42, Issue 33, pp. 6739-6746 (2003)

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We developed a tunable (220–285-nm) UV and fixed 266-nm laser-induced fluorescence (LIF) system using a spectrometer and a cooled CCD imaging detector to measure the excitation-emission matrix spectra of various compounds in water, including quinine sulfate and plastic compound bisphenol-A. The LIF instrument was used for the fast, nonspecific determination of trace amounts of dissolved organic compounds present in natural water supplies and various brand name bottled distilled water and bottled drinking water. Plastic-related compounds that leached out of plastic utensils and containers were also detected with this instrument. The sensitivity of the system was approximately 1–2 orders of magnitude better than that for a commercial system.

© 2003 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(280.3420) Remote sensing and sensors : Laser sensors
(300.2530) Spectroscopy : Fluorescence, laser-induced

Original Manuscript: January 10, 2003
Revised Manuscript: June 13, 2003
Published: November 20, 2003

Vasanthi Sivaprakasam and Dennis K. Killinger, "Tunable ultraviolet laser-induced fluorescence detection of trace plastics and dissolved organic compounds in water," Appl. Opt. 42, 6739-6746 (2003)

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