Two results of Anguang Institute passed appraisal

On July 17, the "In-situ Measuring Instrument for Algae Photosynthesis Activity" and "Water Weight Metal Detector" developed by the Key Laboratory of Environmental Optics and Technology, Anguang Institute, Hefei Institute of Material Science, Chinese Academy of Sciences passed the science and technology organized by the Anhui Science and Technology Department Achievement identification. The expert group agreed that the comprehensive technical performance of these two achievements has reached the international advanced level.

Algae photosynthesis activity directly reflects the potential of algae growth. In situ measurement of algae photosynthesis activity is of great significance for early warning of cyanobacteria blooms, drinking water safety, and aquaculture development. The "algae photosynthesis active in-situ measuring instrument" uses the light-induced fluorescence measurement method of saturation pulse amplitude modulation to solve the problem of algae fluorescence dynamics measurement under different illuminations, and obtains the in vivo fluorescence emission characteristics of algae under different light intensities; Power blue laser diode and LED array, developed multi-excitation light source and algae dark adaptive light machine device, solved the problem of stray light interference in underwater in-situ measurement; designed a spherical optical radiation collector and chopper modulation signal detection circuit , To achieve accurate measurement of large dynamic range underwater ambient light. The system has the characteristics of small size, good stability, fast response, high sensitivity and high degree of automation. It can be used for long-term continuous online monitoring of algae in lakes, reservoirs, rivers and water sources.

Heavy metal pollution seriously endangers people's survival, health and development. It is very important to realize the rapid and online detection of water heavy metals. "Water heavy metal detection device" proposed a high-frequency atomization-graphite enriched liquid-solid sample conversion method to improve the signal detection sensitivity; a differential spectrum-time domain smoothing algorithm was proposed to solve the problem of background spectral interference and achieve different Accurate element line extraction reduces cross-interference between elements and the effect of self-absorption; based on the metal element plasma line water heavy metal detection method, a new set of laser-induced plasma spectrum reception integrated new heavy metal detection device has been designed. The device has the characteristics of fast, multi-element simultaneous measurement, small size and good stability. It can be used for fixed-point and online automatic monitoring of sewage discharge in polluted areas of industrial and mining enterprises such as mines, metallurgy, coal, and combustion in China. Real-time monitoring of content, as well as on-site emergency monitoring and tracking measurement of pollution accidents.

The appraisal experts gave full affirmation and high evaluation of the achievements made by the subject research through detailed review of the relevant materials of the two results and on-site viewing of the operation of the instrument. At the same time, it is recommended to realize industrialization as soon as possible to promote the development of environmental monitoring and research in China.

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