Three-dimensional fluorescence spectrum method for measuring chlorine disinfection by-product precursor in water

Abstract

The invention belongs to the environmental monitoring and analysis technical field, which can be used for measuring a chlorine disinfection by-product precursor in water, and provides technical support for pollution control. Aiming at the problems of the measuring method of the existing chlorine disinfection by-product precursor, such as complicated steps and indefinite results, the feasibility for characterizing the chlorine disinfection by-product precursor by three-dimensional feature fluorescence parameters is researched, the correlation between the feature fluorescence characteristic parameters of the chlorine disinfection by-product precursor and the generation potential thereof is confirmed, and the simple and fast method for measuring the chlorine disinfection by-product precursor in water is developed. The measuring method comprises the following steps: establishing a linearity correction equation between the feature fluorescence intensity of the chlorine disinfection by-product precursor and the generation potential thereof; scanning a water sample to be tested with a three-dimensional fluorescence spectrum; and calculating the generation potential of the chlorine disinfection by-products and performing result correction. By adopting the method, the chlorine disinfection by-product precursor in water can be classified and analyzed without complex sample processing and testing; the average relative error is about 10%; and a sample structure is not damaged, and on-line inspection is easily realized.

Description

technical field [0001] The invention belongs to environmental monitoring and analysis, is applied to the determination of disinfection by-product precursors in reclaimed water, can be used for the research and development of regenerated water quality safety assurance technology and the control of chlorine disinfection by-product precursors; it is also suitable for the detection of chlorine disinfection by-products in drinking water control. Background technique [0002] (1) Determination of precursors of chlorine disinfection by-products in drinking water [0003] Disinfection by-products (DBPs, Disinfection by products) are substances that are toxic to the human body and are produced by the reaction of disinfectants and dissolved organic matter in water. When chlorine disinfectants are used, trihalomethanes (THMs) and haloacetic acids (HAAs) chlorine disinfection by-products are mainly generated, and dissolved organic matter in water is called chlorine disinfection by-prod...

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Problems solved by technology

However, the results obtained by three-dimensional fluorescence spectroscopy are only the type and content of organic matter, and cannot be used to directly represent the precursors of chlorine disinfection by-products, and there are no reports on the indirect expression of the potential of chlorine disinfection by-products.

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