Title of article :
IMPROVED OPTICAL PROBE FOR MEASURING PHYTOPLANKTON SUSPENSION CONCENTRATIONS BASED ON OPTICAL FLUORESENSCE AND ABSORPTION
Author/Authors :
Purnamaningsih, Retno Wigajatri university of indonesia - Faculty of Engineering - Department of Electrical Engineering, Indonesia , Prihantini, Nining Betawati university of indonesia - Faculty of Mathematics and Natural Science - Department of Biology, Indonesia
Abstract :
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 10^4 up to around 1 x 10^6 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
Journal title :
Makara Journal Of Technology
Journal title :
Makara Journal Of Technology
