Method for measuring eutrophication water body characteristic parameter by spectrum technology

A technology of eutrophication and characteristic parameters, which is applied in the field of visible light and near-infrared spectral measurement, can solve the problems of large consumption of chemical reagents and equipment, cumbersome sample preparation steps, unsuitable for analysis and detection, etc., to reduce detection costs and improve water environment Effects of good eutrophication problems, good social benefits and economic benefits

Inactive Publication Date: 2008-07-16
ZHEJIANG UNIV
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Problems solved by technology

Due to the large water area and many measuring points, on the other hand, due to the measurement of multiple parameters, the sample volume is large, and there are many defects in the above-mentioned parameter determination methods: a large amount of chemical reagents and equipment are required to

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  • Method for measuring eutrophication water body characteristic parameter by spectrum technology

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Embodiment Construction

[0023] This accompanying drawing shows that the whole implementation process of the present invention comprises following two parts:

[0024] The first part is the establishment of the calibration model, which mainly includes the following steps:

[0025] 1. Connect the spectrometer to the PC computer with a data cable, and place the sample in a special glass sample container. The spectrometer probe and light source are kept vertical to the bottom plane of the sample container. First, irradiate the sample in the sample cell with a 14.5V halogen lamp, use a visible light / near-infrared spectrometer (wavelength range of 325-2500nm) to collect spectral information on the sample cell at one end, and initialize the spectral information, and then inject the water sample into the sample cell. The sample cell is placed on the sample holder to collect the spectral information of the sample. The height of the light source from the water surface of the water sample is fixed at 45cm, and ...

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Abstract

The invention discloses a method for determining the character parameters of a eutrophia water body by adopting a spectrum technology. The steps of the method are as follows: building a spectrum database of corrected sample collection; pretreating the spectrum; building a correcting module; distilling spectrum characteristics; determining the water quality character parameters of an unknown sample. The method has the following advantages of (1) utilizing the spectrum technology for analyzing the character parameters of the eutrophia water body and greatly accelerating the analyzing speed; (2) using no chemical reagents, thus reducing detecting cost and not polluting environment; (3) compared with a chemical method, system errors and artificial errors are reduced greatly, thus improving measuring precision; (4) being capable of simultaneously analyzing and detecting a plurality of water quality parameters, thus saving time and a real-time detecting technology can be better applied to environment monitoring; (5) having excellent social and economic benefits. By being further popularized, the method has good effects on solving the escalating eutrophia problems of lakes and marsh water-area environment at present.

Description

technical field [0001] The invention relates to a method for measuring visible light and near-infrared spectra, in particular to a method for measuring characteristic parameters of eutrophic water bodies with spectral technology. technical background [0002] Eutrophication of water body means that under the influence of natural factors and / or human activities, a large amount of nutrient salt enters the lake or wetland waters, so that the lakes or wetland waters gradually change from an oligotrophic state with a low productivity level to a productive level. A phenomenon of higher eutrophic state changes. In order to accurately assess the eutrophic state of eutrophic water bodies and provide scientific basis for the prevention and control of eutrophic water bodies, it is necessary to analyze the total nitrogen (TN), total phosphorus (TP) and chemical oxygen demand (COD) of eutrophic lakes. COD), chlorophyll a (Chla), transparency (SD) and other characteristic parameters are ...

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Application Information

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IPC IPC(8): G01N21/25
Inventor 何勇吴桂芳鲍一丹
Owner ZHEJIANG UNIV
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