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Proceedings Paper

Novel blue LED-based handheld fluorometer for detection of terrestrial algae on solid surfaces
Author(s): Eric Brechet; Daniel McStay; Rachael D. Wakefield; Ian Campbell
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Paper Abstract

The application of an hand-held fluorometer used to monitor algal growth on stone surfaces is reported. The system is based on a modulated ultra-bright blue LED, used to induce chlorophyll-a fluorescence, as well as that of accessory pigments. With the addition of an encoding wheel and when linked to computer this system can produce real time map of the algae population on solid surface. The system has been shown to have a linear response to algal concentration, making it a viable tool for algal monitoring. The hand-held system is relatively immune to ambient light allowing it to be used on-site in various daylight conditions. Results from field and laboratory tests of the system on historically important sites and test samples are presented.

Paper Details

Date Published: 24 September 1998
PDF: 7 pages
Proc. SPIE 3414, Opto-Contact: Workshop on Technology Transfers, Start-Up Opportunities,and Strategic Alliances, (24 September 1998); doi: 10.1117/12.323527
Show Author Affiliations
Eric Brechet, Robert Gordon Univ. (United Kingdom)
Daniel McStay, Robert Gordon Univ. (United Kingdom)
Rachael D. Wakefield, Robert Gordon Univ. (United Kingdom)
Ian Campbell, Robert Gordon Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 3414:
Opto-Contact: Workshop on Technology Transfers, Start-Up Opportunities,and Strategic Alliances
Robert J. L. Corriveau; M. J. Soileau; Michel Auger, Editor(s)

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