Park TVOC monitoring method using regional TVOC array monitoring system

Abstract

The invention relates to a park TVOC monitoring method using a regional TVOC array monitoring system. The park TVOC monitoring method comprises the following steps of: calibrating the standard concentration values of to-be-monitored gases inside a park or around the park through a standard instrument; measuring monitoring original data values of the to-be-monitored gases through sensor array modules arranged in a plurality of TVOC monitors in a regional TVOC array monitoring system; enabling the monitoring original data values to be in one-to-one correspondence with the standard concentration values, and correcting the monitoring original data values by taking the monitoring original data values of other to-be-monitored gases as influence factors; repeating the above steps until correction of all the to-be-monitored gases and all the TVOC monitors is completed; and iterating and upgrading a correction algorithm of the sensor array modules arranged in the TVOC monitors based on the monitoring correction value results of all the to-be-detected gases. According to the park TVOC monitoring method, the monitoring precision is gradually improved in the continuous use process, the applicability to the monitoring environment is greatly improved, and use is more stable.

Description

technical field [0001] The invention relates to a VOC monitoring method, in particular to a park TVOC monitoring method using a regional TVOC array monitoring system. Background technique [0002] The World Health Organization (WHO, 1989) defines total volatile organic compounds (TVOC) as a general term for volatile organic compounds with a melting point below room temperature and a boiling point between 50-260°C. With the continuous development of urbanization, the emission of VOCs has gradually increased, becoming one of the main pollutants of urban air pollution in recent years. There are many types of VOCs (more than 300 are the most common), involving a large number of industries and enterprises, complex emission conditions, and very difficult supervision. Monitoring and testing have become a key business that currently restricts VOCs governance. [0003] Traditional chromatography, mass spectrometry, or spectrometry instruments have high precision and good stability, ...

AI Technical Summary

Problems solved by technology

For example, the publication number is CN101609072A "Volatile Organic Compound Continuous Monitor", the publication number is CN108982728A "A kind of ambient air non-methane total hydrocarbon online monitoring instrument optimization and calibration method" and other patent documents, but due to this FID-based VOC monitoring The operation of the equipment is complicated, and it requires professional operation, frequent calibration and maintenance during operation, which limits its application

At the same time, the test interval is relatively long (usually 1 hour for one data), so it is difficult to be used to test the atmosphere with grid layout

[0004] At present, environmental protection monitoring stations in most areas of China have the ability to detect VOCs, but they lack on-site rapid detection capabilities and require portable or mobile on-site detection equipment

Traditional monitoring technology equipment and small-scale monitoring systems cannot extract effective information from the data, fail to achieve the purpose of monitoring, and cannot solve the problem of unclear VOCs emissions

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