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Method and device for classified detecting density of phytoplankton under water in site

A technology for phytoplankton and classification detection, which is applied in measurement devices, analysis materials, material excitation analysis, etc., can solve the problems of cumbersome steps, high cost, time-consuming and labor-intensive measurement, etc. Effect

Active Publication Date: 2009-07-29
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, this method is more time-consuming and labor-intensive than the above two methods, and requires very professional inspectors to complete it, so it is difficult to be widely used in environmental monitoring
[0006] In short, the existing methods all need to take samples of the water samples to be tested and then conduct further laboratory analysis. Usually, the detection period is long, the steps are cumbersome and the cost is high, which seriously affects the coverage and frequency of monitoring, and cannot meet the requirements of modern environmental monitoring. Fast, real-time, in-situ requirements

Method used

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  • Method and device for classified detecting density of phytoplankton under water in site
  • Method and device for classified detecting density of phytoplankton under water in site
  • Method and device for classified detecting density of phytoplankton under water in site

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Embodiment Construction

[0035] see figure 1 , figure 2 .

[0036] The underwater in-situ classification and detection device for phytoplankton concentration is composed of three main units, namely: ①, a light source excitation unit, including an ultra-bright light-emitting diode LED array and related optical components; ②, a signal detection and control unit, including Photomultiplier tube and microcontroller, ③, data processing and storage unit, including an external portable computer with data acquisition card and related software. Its specific structure is to be installed on an airtight pressure-bearing box 9 with a groove 10 on its side and a shading cover 11 on the outside of the box body 9. The space between the box body and the shading cover 11 is open, and seawater can enter the concave slot for measurement. There are transparent windows on the top and sides of the groove 10 , and the optical elements are installed in the box 9 close to the top and sides of the groove 10 .

[0037] The c...

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Abstract

A method for classifying underwater original position of polytoplankton by detecting concentration of polytoplankton includes setting a groove at one side of closed pressure box and a light shading cover at external side of said box; erecting LED array formed by parallel-arranged LED with center wavelength of 450nm, 525nm, 570nm 590nm and 620nm in light path at side surface of said groove; dividing polytoplankton to be five light spectrum set as green, blue, brown, red and mixture; measuring 685nm florescent intensity of five different exciting wavelength to calculate out chlorophyll concentration of each light spectrum according to known coefficient.

Description

technical field [0001] The invention belongs to a spectral measurement method and device Background technique [0002] The eutrophication of the water body leads to the excessive proliferation of phytoplankton in the water body, and the excessive phytoplankton depletes the dissolved oxygen in the water body, resulting in the death of a large number of aquatic organisms, and the water body becomes black and smelly. Not only that, some phytoplankton (cyanobacteria, etc.) release a variety of algal toxins into the water body, causing serious harm to human health. At present, the most effective measure to reduce the losses caused by eutrophication of water bodies is to monitor the concentration of phytoplankton in time, grasp the law of algal blooms, and forecast in time to take effective measures. Therefore, the monitoring of phytoplankton concentration has become an important task of the environmental monitoring department. There are mainly three types of detection methods: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64G01N21/25G06F19/00
CPCG01N21/8507
Inventor 王志刚刘文清张玉钧司马伟吕赵南京肖雪刘建国
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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