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Using New Water Quality Sensor for Harmful Algal Bloom Monitoring

Posted by Danielle Dumont on Mar 11, 2013 12:20:00 PM

Register now for webinar: Get More Accurate Estimates of Total Algae Biomass:
A New Tool for the Concurrent Measurement of Chlorophyll & Cyanobacteria

Friday, March 29, 2013, 1:00 PM-1:45 PM ET EXO2 sonde measuring algae using combine chlorophyll and BGA sensor

Join us for a free, informative webinar about the sensor technology, practical-use applications, and calibration of the EXO Total Algae Sensor from YSI.

Top 5 Questions to ask when using water quality sensors for harmful algal bloom monitoring:

  1. Are you measuring viable cells only, or does the sensor also pick up dead cells in the water?
  2. Are you measuring Chlorophyll only, which tends to underestimate the algal population?
  3. Does your sensor discern cyanobacteria blooms from other potentially harmful blooms?
  4. Is your sensor sensitive to common interferences such as turbidity, dissolved organic matter (DOM), or degraded pigments?
  5. Are you profiling the water column to locate algal blooms at different depths and adjusting your intake and treatment operations?

The Total Algae Webinar presented will help you answer these questions, and explore further:

Q: Why is measuring Chlorophyll & Blue-green Algae Phycocyanin (cyanobacteria) simultaneously useful for an accurate estimate of total algae biomass?

A: Using Chlorophyll alone to measure algae biomass has a tendency to underestimate the population. Therefore using Chlorophyll & Blue-green Algae simultaneously---to detect algal biomass for both planktonic algae (chlorophytes, diatoms, dinoflagellates, etc.) and cyanobacteria specifically---generates a more accurate total biomass estimate.

Other topics covered in the March 29 webinar include:

  • EXO Total Algae Sensor technology
  • Applications for total algae measurements:
    o Eutrophication of surface water 
    o Coastal algae blooms 
    o Drinking water reservoirs
  • Interferences with TAL sensor
  • Calibration and correlation to lab samples
  • A Q&A session

Applications for a dual-channel fluorescence sensor:

Drinking water: Research shows that using both in vivo Chl and BGA-PC sensors in source waters is helpful in discerning cyanobacteria blooms from other algal blooms, and in quickly assessing the potentially harmful nature of the blooms. Treatment operators and managers can use the combined data to adjust treatment processes as necessary to avoid the intake or plan the removal of cyanobacteria and possible toxins.

Source water: Readings from the EXO TAL sensor show less interference from turbidity and thus allow for more accurate determination of BGA-PC and Chl content during rainfall events that release both sediment and algae into the water.

Seawater: In coastal applications the fast sensor output of 4 Hz can be used for profiling the water column and detecting algal microlayers at various depths.

Who Should Attend: Lake managers, reservoir managers, drinking water plant operators, source water managers.

Register now for webinar: Get More Accurate Estimates of Total Algae Biomass:
A New Tool for the Concurrent Measurement of Chlorophyll & Cyanobacteria

Topics: water quality monitoring, water quality measurements, drinking water monitoring, chlorophyll, blue-green algae, algae monitoring, harmful algal blooms, algae in drinking water, measuring chlorophyll, measuring cyanobacteria

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