Online detection of chlorophyll concentration, algae classes and photosynthetic activity

The bbe Algae Online Analyzer offers:

• online chlorophyll analysis for measuring stations as well as for laboratory use
• simultaneous determination of chlorophyll concentration, photosynthetic activity of chlorophyll and transmission.
• determination of different algae classes by excitation using colored LED's; calculation of the content of green algae, blue-green algae, brown algae (diatoms and dinoflagellates) and cryptophyceae.
• direct measurement without sample preparation by filtration or solvents.
• information on the photosynthetic activity of chlorophyll due to different patterns of excitation, correlated to oxygen evolution; the commonly used fluorescence signals f0, f, fm referring to the Genty parameter method are used for calculation.
• yellow substance measurement (CDOM) to correct the calculation of the content of chlorophyll

Functions of the bbe AlgaeOnlineAnalyser

Measurements are taken quasi-continually. The sample is pumped into the measuring chamber by the integrated pump. The concentration and activity of the algae, as well as the spectral algae class distribution, are determined by the controlled fluorescence excitation. After the chamber has been pumped empty, it is cleaned by a mechanical piston.

Operation

Applications

• waterway analysis and assessment
• general environmental assessment
• intake monitoring
• chemical analysis
• dam monitoring
• limnological work
• research and education

Brochures:

bbe AlgaeOnlineAnalyser

Literature:

chlorophyll measurements

On the web:

bbe instruments on the web chlorophyll on the web

Measurements

• of direct chlorophyll fluorescence.
• corresponds to wet-chemical chlorophyll analysis. of active chlorophyll fluorescence in the sample (Genty method)
• shows the percentage of photosynthetically active chlorophyll under defined conditions differentiation of fluorometric algae classes
• to simultaneously determine the content of chlorophyll according to green algae, blue-green algae, brown algae (diatoms and dinoflagellates) and cryptophyceae transmission:
• takes place automatically during each analysis and if necessary, can be used to compensate the influence of substances which cause turbidity yellow substances (CDOM)
• influences the result due to its fluorescence; to improve the chlorophyll measurement, the yellow substance content is determined and used automatically for the chlorophyll correction water temperature
  batch mode:
• change from flow-through to single measurement for laboratory tests

Software
 

The database software is used to record and analyze the data. The most important features are...

• saving of data and parameters at any time
• graphic display of all measurement values
• online display in LAN
• calibration of the instrument
• parameterization of the measurement
• data export to EXCEL and to text files
• print function
• subsequent recalibration of algae classes

Specifications of the bbe Algae Online Analyzer

Measurements:

• total chlorophyll [µg Chl-a/l]
• concentration of green algae [µg Chl-a/l]
• concentration of blue algae [µg Chl-a/l]
• concentration of diatoms [µg Chl-a/l]
• concentration of cryptomons [µg Chl-a/l]
• yellow substances
• photosynthetic activity (Genty) - Option
• transmission (at 5 wavelengths)
• water temperature

Specifications of the bbe Algae Online Analyzer (Wall Mounted)

Measurements:

• total chlorophyll [µg Chl-a/l]
• concentration of green algae [µg Chl-a/l]
• concentration of blue algae [µg Chl-a/l]
• concentration of diatoms [µg Chl-a/l]
• concentration of cryptomons [µg Chl-a/l]
• yellow substances
• photosynthetic activity (Genty) - Option
• transmission (at 5 wavelengths)
• water temperature