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Ocean chlorophyll fluorescence in-situ monitor

A chlorophyll fluorescence and monitor technology, used in fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of many influencing factors, limited data volume, long time consumption, etc., and achieve extended application range, low power consumption, and high detection accuracy. Effect

Inactive Publication Date: 2014-03-26
SUZHOU INDAL TECH RES INST OF ZHEJIANG UNIV
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Problems solved by technology

[0003] At present, the extraction fluorescence method is mainly used for the determination of algae chlorophyll. This method has high sensitivity and can accurately determine the content of chlorophyll, but it needs on-site sampling and sample pretreatment, which takes a long time. limited quantity

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  • Ocean chlorophyll fluorescence in-situ monitor
  • Ocean chlorophyll fluorescence in-situ monitor
  • Ocean chlorophyll fluorescence in-situ monitor

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Embodiment Construction

[0027] Further illustrate the present invention below in conjunction with accompanying drawing.

[0028] Such as figure 1 As shown, a marine chlorophyll fluorescence in-situ monitor has a cylindrical overall structure (the length of the shell is 168mm, and the diameter is 64mm). The main components include: two excitation light source seats 2 on the top, and an optical detection system 4 inside the end cover 3 , the analog circuit module 5, the digital circuit module 6 and the power management module 7 inside the casing, as well as the high-pressure-resistant sealed casing 8, the rear cover 9 and the watertight connector 10.

[0029] The principle of optical detection of the instrument is as follows: figure 2 As shown, two specific wavelength LEDs 11 synchronously and periodically emit blue excitation light, which is emitted through the light source window 12. Chlorophyll a molecules in the external sample are excited by blue light to generate red fluorescence, and part of t...

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Abstract

The invention discloses a small-size chlorophyll fluorescence in-situ monitor capable of being used in water depth of 3000m. According to the small-size chlorophyll fluorescence in-situ monitor, an exciting light modulation and synchronous detection technology is adopted, a system light path is optimized and a low-power-consumption circuit design is adopted, so that the small-size chlorophyll fluorescence in-situ monitor has the advantages of high detection precision, low power consumption, ambient light interference resistance and the like. The small-size chlorophyll fluorescence in-situ monitor can be connected with an underwater battery to carry out long-time self-contained type work or is mounted into a towed body to carry out underwater towing and vertical section investigation; the small-size chlorophyll fluorescence in-situ monitor can be integrated to third party platforms including a multi-parameter system, an ocean buoy / a subsurface buoy, a seabed observational network and the like in a modularized manner to carry out in-situ continuous monitoring. The small-size chlorophyll fluorescence in-situ monitor can be used for conveniently and rapidly determining vertical and horizontal distribution of chlorophyll concentrations of different sea areas from off-shore areas to the ocean.

Description

technical field [0001] The invention relates to the field of in-situ monitoring of the marine environment, in particular to a marine chlorophyll fluorescence in-situ monitor. Background technique [0002] Chlorophyll is the main photosynthetic pigment in marine phytoplankton. The distribution of marine phytoplankton is affected by many factors such as sea temperature, light, nutrient content, water mixing degree such as upwelling and turbulence, and zooplankton feeding. Its seasonal variation characteristics have important ecological significance. [0003] At present, the extraction fluorescence method is mainly used for the determination of algae chlorophyll. This method has high sensitivity and can accurately determine the content of chlorophyll, but it needs on-site sampling and sample pretreatment, which takes a long time. Quantities are limited. In 1966, Lorenzen proposed the method of continuous measurement of chlorophyll content in vivo by fluorescence method, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 叶树明潘建明蒋凯周乐川胡轶罗建超高晓辉
Owner SUZHOU INDAL TECH RES INST OF ZHEJIANG UNIV
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