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
Sivaprakasam, V.; Shannon, Jr., R.F.; Luo, C.; Coble, P.G.; Boehme, J.R.; Killinger, D.K. (2003). 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(33): 6747-6756. https://dx.doi.org/10.1364/ao.42.006747
In: Applied Optics. Optical Society of America: Easton, Pa.. ISSN 0003-6935, more
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| Authors | | Top |
- Sivaprakasam, V.
- Shannon, Jr., R.F.
- Luo, C.
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- Coble, P.G.
- Boehme, J.R.
- Killinger, D.K.
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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. |
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