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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 33 — Nov. 20, 2003
  • pp: 6747–6756

Development and initial calibration of a portable laser-induced fluorescence system used for in situ measurements of trace plastics and dissolved organic compounds in seawater and the Gulf of Mexico

Vasanthi Sivaprakasam, Robert F. Shannon, Jr., Caiyan Luo, Paula G. Coble, Jennifer R. Boehme, and Dennis K. Killinger  »View Author Affiliations


Applied Optics, Vol. 42, Issue 33, pp. 6747-6756 (2003)
http://dx.doi.org/10.1364/AO.42.006747


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Abstract

A portable UV laser-induced fluorescence system that uses a high pulsed repetition frequency (8-kHz) microchip laser at 266 nm, 13 switchable optical filters, and a gated photomultiplier tube detector has been developed and tested successfully for the detection of leached plastics (possibly bisphenol-A) and trace dissolved organic compounds in seawater. The instrument is 100 times more sensitive than commercial portable spectrofluorometers and measures a complete fluorescence spectrum in a moderate time period of 1–2 min. The system was tested in the Gulf of Mexico over varying water masses. In addition, fluorescence lifetime, bleaching, and temporal flow characteristics were studied.

© 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

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

Citation
Vasanthi Sivaprakasam, Robert F. Shannon, Caiyan Luo, Paula G. Coble, Jennifer R. Boehme, and Dennis K. Killinger, "Development and initial calibration of a portable laser-induced fluorescence system used for in situ measurements of trace plastics and dissolved organic compounds in seawater and the Gulf of Mexico," Appl. Opt. 42, 6747-6756 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-33-6747


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References

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  2. P. G. Coble, J. Boehme, College of Marine Science, University of South Florida, St. Petersburg, Fla. (personal communication, 2000).
  3. V. Sivaprakasam, D. K. Killinger, “Tunable ultraviolet laser-induced fluorescence detection of trace plastics and dissolved organic compounds in water,” Appl. Opt. 42, 6739–6746 (2003). [CrossRef] [PubMed]
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