The reporter learned from the Hefei Institute of Material Research, Chinese Academy of Sciences on the 25th that the Anhui Institute of Optics and Precision Mechanics of the Institute has successfully developed an "in-situ measuring instrument for algae photosynthesis activity." This achievement is the first time in China that the “growth potential†of algae, a long-term online monitoring of photosynthesis activity, is of great significance for early warning of cyanobacteria.
This achievement has recently passed the expert appraisal organized by the Anhui Science and Technology Department.
In recent years, the eutrophication of large lakes and reservoirs in China has become more and more serious. Summer cyanobacterial blooms continue to occur frequently, and how to control and prevent cyanobacterial outbreaks has attracted widespread social attention.
Researcher Zhao Nanjing, the project leader of the Anguang Institute of the Chinese Academy of Sciences, said that the photosynthetic activity of algae directly reflects the growth potential of algae. In layman's terms, it is the "growth potential" of algae. The "algae photosynthesis active in situ measuring instrument" uses laser diodes and LEDs as excitation light sources, and controls the different light intensities to realize the fluorescence excitation of algae under different physiological conditions. The measurement instrument obtains these fluorescence intensity data and analyzes them to characterize the algae. The ability of photosynthesis to judge its growth trend.
"The outbreak of cyanobacteria is related to the concentration and the" growth potential ". If the cyanobacteria with high concentration is already in the decay period, there is no need to worry about its further development; even if the concentration is not high, the outbreak occurs when the" growth potential "is large The possibility is very big. "Zhao Nanjing said.
The research results have the characteristics of small size, good stability, fast response, high sensitivity and high degree of automation, and can be used for long-term continuous online monitoring of algae in lakes, reservoirs, rivers and water sources. It has important practical value for timely and accurate information on the changes of the lake and reservoir water environment in China, enhancing the prediction ability of water bloom disasters, ensuring the safety of drinking water, and reducing the losses caused by water bloom disasters, and can be used to make major decisions to protect the water environment. And long-term planning to provide timely, accurate and reliable monitoring data and technical support.
It is understood that this set of instruments has been continuously running in Chaohu.
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