Method for tracing pollutants by combining nitrogen oxygen isotopes with three-dimensional fluorescence

Abstract

The invention provides a method for tracing pollutants by combining nitrogen oxygen isotopes with three-dimensional fluorescence. The method comprises the following steps of isotope determination andanalysis, fluorescence detection and analysis, pollution source type recognition and pollution source determination. According to the method for tracing the pollutants, main pollution sources and thecontribution rate of the pollution sources are determined by using nitrogen oxygen isotope analysis; the fluorescence ratio among various fluorescence peaks is determined by fluorescence detection, sothat the main pollution sources and the fluorescence ratio are combined to judge the pollution source types of sampling points; main sources of pollutants at various sampling points are determined bycombining with geographic location, hydrologic parameters and the pollution source types, so as to effectively improve the reliability and the accuracy of tracing the pollution sources.

Description

technical field [0001] The invention relates to a method for traceability of pollutants, in particular to a method for traceability of pollutants by combining nitrogen and oxygen isotopes and three-dimensional fluorescence. Background technique [0002] With the rapid development of social economy, environmental problems have become increasingly prominent, especially the water environment, which is closely related to human survival, has been seriously polluted. Water pollution seriously affects people's water safety and also restricts the sustainable development of society. However, human activities such as emissions from domestic sources, input from industrial sources, and agricultural non-point source pollution are complex and changeable, and difficult to grasp. Therefore, it is very important to trace the source of water pollution, which is conducive to the efficient control and treatment of water pollution, and to ensure the safety of water quality. [0003] Usually, i...

AI Technical Summary

Problems solved by technology

Fluorescence spectrum analysis generally uses the peak recognition method, using the position of the maximum fluorescence intensity to determine the excitation and emission wavelengths, and then determine the type of fluorescence peak. However, according to the type of fluorescence peak, it can only be roughly determined whether it is affected by human beings, and the source of pollution cannot be determined.

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