Fluorescence instrument for fast on-line measurement of water body chlorophyll concentration

A technology of chlorophyll concentration and fluorescence meter, which is applied in the direction of fluorescence/phosphorescence, material excitation analysis, etc. It can solve the problems of wrong data, heavy workload, and many interference factors, and achieve reduced spectral bandwidth, small sample volume, and simple conditions controllable effect
CN101403695AInactive Publication Date: 2009-04-08TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2009-04-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a fluorometer used for online measuring the concentration of water chlorophyll quickly, in particular to an underwater fluorometer, belonging to the water quality analysis field; wherein, the underwater fluorometer is used for the in-situ quick measurement of the chlorophyll a, thus obtaining the real-time data of a water body. The technical proposal adopted by the fluorometer is that the fluorometer comprises an LED light source which carries out output by a turning mirror, and a postpositive photodiode used for receiving the fluorescence by a condensation lens group; the output of the postpositive photodiode is sequentially output by a signal automatic gain adjustment and signal collecting circuit, a control and signal processing module, a serial port and finally an output cable to a PC or a data collection system; the signal automatic gain adjustment and signal collecting circuit, the control and signal processing module and an RS-232 serial port are arranged on a circuit board in the fluorometer; and the circuit board in the fluorometer is also provided with a light source driving circuit which is used for driving the LED light source. The fluorometer is mainly applied to the water quality analysis.
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Description

technical field

[0001] The invention relates to the field of water quality analysis, in particular to a fluorescence instrument for fast on-line measurement of water body chlorophyll concentration. Background technique

[0002] In recent years, my country has experienced water crises in Taihu Lake and Wuhu. Due to the continuous outbreak of blue-green algae in the water body, the phytoplankton in the water increased sharply, the oxygen in the water was exhausted, and the water body showed a large area of ​​anoxic state, causing a large number of aquatic organisms to die. Due to the rapid growth of algae in the water and the accumulation of green algae on the water surface, the water flow is difficult, the water body cannot communicate with the outside world, and it becomes foul day by day, which brings great harm to people's production, life and life and health.

[0003] At present, most of the relevant monitoring stations and environmental research institutes in lakes and r...

Claims

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