FLUOROMETER WITH MULTICHANNEL EXCITATION SYSTEM ON LIGHT-EMITTING DIODES Russian patent published in 2018 - IPC G01N21/64 G01N21/63 G01N21/01 

FIELD: measuring equipment.

SUBSTANCE: invention relates to ecology, limnology, oceanology and can be used as a device for in situ research of anthropogenic pollution of natural water areas with sea and fresh water. Fluorometer includes a reference generator which is designed with possibility to generate control signals of arbitrary frequency, duration, and porosity for LEDs with different wavelengths. LEDs are optically connected to a measuring cavity, a turret of optical filters and a recording photodetector coupled to a polychromator. Reference and recording photodetectors are multichannel and electrically connected to an analog-to-digital converter to which temperature and salinity sensors installed in the cuvette are also connected.

EFFECT: simultaneous measurement of a multitude of biooptical parameters in the researched reservoir, obtained in a wide spectral range from 200 nm to 800 nm, such as phytoplankton fluorescence, state of photosynthetic phytoplankton apparatus, fluorescence of DOM (dissolved organic matter), fluorescence of phytoplankton pigments, temperature and salinity of water, which makes rapid biotesting of water areas possible and to reveal the degree of anthropogenic pollution of the ecosystem.

4 cl, 2 dwg