Monitoring of different phytoplankton biomass is an important task for environmental management. Here, a novel
submersible phytoplankton fluorometer which use light emitting diode (LED) array as excitation source is presented. Six
LEDs of different wavelength are included in the excitation LED-array, the maximal emission wavelength are 380nm,
450nm,520nm,570nm,590nm and 610nm. By means of pulse excitation of different LED, fluorescence of Chl-a in
different phytoplankton cells is collected and recorded. Comparing to excitation fluorescence spectral and using
multivariate linear regression, chlorophyll-a content of different spectral group phytoplankton can be retrieved. With
temperature and pressure probe, information of water temperature and depth also can be recorded. Consequently, the
submersible phytoplankton fluorometer can used to measure chlorophyll-a content of different spectral groups
phytoplankton in vitro and in situ. Potential application of the submersible phytoplankton fluorometer in environment
monitoring is further elucidated.
The field experiment of Dongpu reservoir has been carried out from April 11 to 20 in 2005, and the concentrations of dissolved organic matter (DOM) are measured and analyzed in combination with laser-induced fluorescence (LIF) measurements. The aim of the field investigations was to determine the concentration of DOM in water and evaluate the performance of fluorescence remote sensing system. In experiment, we obtained interesting data of DOM at 49.35m distance by changing the angle of excitation laser incidence to water. The concentration of the DOM is 3.325mg/l and the relative standard deviation is 2.65%. It has been shown that the measurement of water quality in real time and on line can be done using LIF technique with high sensitivity and high precision.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.