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Proceedings Paper

Microalgal fiber-optic biosensors for water quality monitoring
Author(s): Guillermo Orellana; Laura Villén; David Haigh; Emilia Maneiro; Fernando Marvá; Eduardo Costas
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Paper Abstract

Novel fiber-optic biosensors have been developed for the analysis of pesticides in water based on Chlorophyceae microalgae immobilized into a porous silicone layer as recognition element, and on measurements of the photogenerated O2 as chemical transducer. The inhibition of O2 production by the photosynthetic green algae in the presence of the pesticide (simazine) was used as the biological signal. Luminescent thin films and a dedicated optoelectronic unit based on emission phase-shift measurements provide the tools for the sensitive O2 measurements. Fluctuation analysis allows selection of sensitive and resistant microalgae mutants without genetic manipulation for maximum biosensing selectivity.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 661921 (2 July 2007); doi: 10.1117/12.738597
Show Author Affiliations
Guillermo Orellana, Univ. Complutense de Madrid (Spain)
Laura Villén, Univ. Complutense de Madrid (Spain)
David Haigh, Univ. Complutense de Madrid (Spain)
Emilia Maneiro, Univ. Complutense de Madrid (Spain)
Fernando Marvá, Univ. Complutense de Madrid (Spain)
Eduardo Costas, Univ. Complutense de Madrid (Spain)


Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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