Method for quickly monitoring riverway water quality parameters based on electronic nose technology

Abstract

The invention discloses a method for quickly monitoring riverway water quality parameters based on an electronic nose technology, which specifically comprises the following steps: putting a collectedriverway water sample into a sealed container, and standing for a period of time to saturate headspace gas in the sealed container; the electronic nose monitoring headspace gas, and extracting characteristic data from an electronic nose signal to serve as fingerprint information of river water; detecting physical and chemical parameters of pH, COD, total phosphorus and total nitrogen of the riverwater; and establishing a regression model between the riverway water fingerprint information based on the electronic nose technology and the physicochemical parameters of the riverway water fingerprint information by adopting a support partial least square method. According to the method, the riverway water quality parameters can be rapidly detected only through the electronic nose technology andthe partial least square method, complex riverway water early-stage pretreatment is not needed, the analysis structure is objective and reliable, operation is easy, the cost is low, and high application and popularization value is achieved.

Description

technical field [0001] The invention belongs to the field of environment and relates to a method for quickly monitoring river water quality parameters based on electronic nose technology. Background technique [0002] In recent years, the problem of water pollution in urban rivers has become increasingly serious. River management needs to know and master the water quality of the river in advance. At present, the water quality parameters of river courses are mainly obtained through on-site sampling by professionals and brought back to the laboratory for analysis through chemical measurement methods, instrumental analysis and other detection methods. These methods have problems such as long detection period, high cost, and high quality requirements for the detection environment and experimenters. [0003] The electronic nose is an intelligent device that combines a sensing system and a pattern recognition system to quickly detect a variety of gas molecules. It has the charac...

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Problems solved by technology

The relevant research on the frequent and rapid monitoring of river water quality parameters using electronic nose technology has not been reported yet

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