Method for measuring eutrophication water body characteristic parameter by spectrum technology

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 ...

AI Technical Summary

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 be consumed, and the sample preparation steps are cumbersome. Multiple parameters of the same sample are tested separately. The cost of analyzing a sample is high and the cycle is long. It is not suitable for the analysis and detection of multi-sample and multi-parameter eutrophic water bodies.

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