Method for tracing pollutants by combining water quality parameters with three-dimensional fluorescence spectrum

Abstract

The invention provides a method for tracing pollutants by combining water quality parameters with a three-dimensional fluorescence spectrum. The method comprises the following steps of water quality testing, fluorescence detection, pollution source type identification, and pollution source determination. The pollutant tracing method is combined with PMF model factor analysis results and the fluorescence intensity ratio of characteristic fluorescent components to quickly judge whether a water body environment is affected by human activities or not and judge the type of a water body pollution source at the same time; in addition, targeted screening of pollution sources is carried out by combining with relevant regional water quality monitoring distribution points with hydrological parameters; and finally, main pollution sources of a water body are defined by comparing test results of the corresponding pollution sources. The method has the advantages of simple operation, high accuracy, good reproducibility and the like; typical pollution sources in the water body environment can be quickly and effectively identified and theoretical guidance is provided for control and treatment of related pollution.

Description

technical field [0001] The invention relates to a method for tracing the source of pollutants, in particular to a method for tracing the source of pollutants by combining water quality parameters and three-dimensional fluorescence spectrum. Background technique [0002] With the rapid development of human society, the water body environment has been seriously polluted. The pollution is mainly divided into water quality changes caused by natural factors and water quality deterioration caused by human factors, such as the discharge of living sources, agricultural non-point source pollution, industrial wastewater discharge, etc. . In order to effectively control water body pollution, it is necessary to clarify the types and characteristics of pollution sources of water bodies, and take corresponding control and treatment measures to quickly investigate and control pollution sources and ensure water quality safety. [0003] Usually, water quality monitoring relies on chemical o...

AI Technical Summary

Problems solved by technology

Fluorescence spectrum analysis generally uses the peak recognition method to determine the excitation and emission wavelengths by using the position of the maximum fluorescence intensity, and then determine the type of fluorescence peak. Compare

If there are too many samples, the workload will be huge, which is not conducive to efficient and quick judgment of the source of water pollution

The PARAFAC method is based on the three-line decomposition theory, and the "mathematical separation" of fluorescent substances can be realized by using the alternating least squares algorithm, but it can only identify the characteristic fluorescent components, and cannot define the exact source of each fluorescent component

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