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cyanobacteria monitoring Applications

  • Monitoring of Algal Production / Monitoring of Algae Growth

    Over the past 20 years active fluorescence has been widely adopted by the scientific community, ecosystem managers and crop growers as a rapid and non-invasive method of estimating photosynthetic performance within a wide range of organisms, including phytoplankton (microalgae and cyanobacteria), biofilms, benthic autotrophs (corals, macroalgae and sea grasses) and terrestrial plants. The main rational for applying active fluorescence is that changes in key fluorescence parameters can reveal the early onset of chronic and acute degradation of photosynthetic performance and subsequent growth, e.g. resulting from nutrient deficiency or the presence on one or more toxicants.

    Over the past 15 years we have been developing an active fluorescence technique called Fast Repetition Rate (FRR) fluorometry to monitor algae populations in the open-ocean, primarily to support climate and ocean modelling.

    By Chelsea Technologies Group based in West Molesey, UNITED KINGDOM.

  • Monitoring of Algae in Drinking Water

    The UniLux in-situ fluorometer can be configured to detect a number of key parameters that are of importance to the Water Supply Industry. Primarily, the detection of Chlorophyll a in stored water systems, such as reservoirs, assists in the planning and informs decisions on water abstraction in relation to natural algae blooms that regularly occur throughout the year. As well as Chlorophyll a, these in-situ fluorometers can detect cyanobacterias, such as Phycocyanin and Phycoerythrin, which are often associated with algae groups of a toxic nature. Knowledge of concentrations of algae within the water can assist in determining the loading into water processing plants.

    These in-situ fluorometers are available as single parameter sensors (UniLux), or 3 channel sensors (TriLux).The CTG FastFlow fast repetition rate fluorometer provides information on the physiological state of algae it monitors. As well as providing detailed information on the growth rate of the algae (which can indicate the occurrence of a future algae bloom), it can immediately inform and alarm on toxins that have accidentally or deliberately been introduced into the water systems, as with the FastGuard system. The FastFlow differs from the FastGuard system in that it logs and displays detailed information on the state of the algae monitored for operational requirements.

    By Chelsea Technologies Group based in West Molesey, UNITED KINGDOM.

  • Environmental Monitoring - Water Screening for Pollutants - Pesticide Screening

    Water screening for the detection of pollutants owning to large classes of chemical compounds such as triazine, fenylurea, diazine and phenolic pesticides can be performed. The presence of environmental pollutants can be determined utilizing biological materials such as photosynthetic biomediators (Plants, Algae, Cyanobacteria) and enzymes (e.g. Laccase or Tyrosinase). AMPBIO-ITO Light provides amperometric measurements performed on electro-active biological material suspended, deposited or grown on an Indium Tin Oxide (ITO) electrode, before and after the injection of the analyte under test. OPTICBIO-Multicell Survival optical is based on multicell arrays for biological material survival/storage and fluorescence measurement for the control of the physiological activity.

    By Biosensor based in Formello, ITALY.

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