IMPROVED OPTICAL PROBE FOR MEASURING PHYTOPLANKTON SUSPENSION CONCENTRATIONS BASED ON OPTICAL FLUORESENSCE AND ABSORPTION
| Main Authors: | Retno Wigajatri Purnamaningsih; Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia, Nining Betawati Prihantini; Department of Biology, Faculty of Mathematics and Natural Science, Universitas Indonesia, Depok 16424, Indonesia |
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| Format: | Article application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Directorate of Research and Community Engagement, Universitas Indonesia
, 2013
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| Online Access: |
http://journal.ui.ac.id/index.php/technology/article/view/1509 |
Daftar Isi:
- This paper discusses the results of improved optical probe that works according to optical fluorescence and absorption phenomena for measuring the phytoplankton suspension concentrations. Measurements are made on the Scenedesmus sp. culture. The laboratory test has shown that range of concentration from 104 up to around 1 x 106 cells/mL; fluorescence intensity at λ= 685 nm; and logarithmic of transmission intensity at λ= 405 nm are proportional to the cell concentration linear with proportional constant γ = 4 × 10-5 and β = –2 × 10-7 mL/cell respectively.Keywords: optical probe, optical fluorescence, optical absorption, phytoplankton concentration