Vehicle-mounted dust-haze pollutant real-time on-line monitoring system and vehicle-mounted dust-haze pollutant real-time on-line monitoring method

Abstract

The invention discloses a vehicle-mounted dust-haze pollutant real-time on-line monitoring system and a vehicle-mounted dust-haze pollutant real-time on-line monitoring method. The monitoring system includes a PM2.5 online mass spectrum detection system, a VOCs online mass spectrum detection system and a VOCs online spectrum detection system which are arranged on a moving monitoring vehicle. The monitoring method includes the steps of performing on-line measurement to particulate matters in atmosphere through PM2.5 online time of flight mass spectrum to obtain number concentration of the particulate matters, spectrogram of particle size and online mass spectrum data, classifying the ingredients of the particle matters through an ART-2a method to obtain chemical ingredient data of single particle under different time resolutions and particle sizes, analyzing the source of the particulate matters through a mass spectrum direct analysis technology to determine the source of the particulate matters, directly performing online measurement to VOCs in atmosphere through the VOCs online time of flight mass spectrum to obtain the ingredient and concentration characters of the VOCs, and directly performing online measurement to the VOCs in atmosphere through VOCs online spectrum to obtain the ingredient and concentration characters of the VOCs.

Description

technical field [0001] The invention relates to the field of haze pollutant monitoring, in particular to a vehicle-mounted real-time online monitoring system and method for haze pollutants. Background technique [0002] In recent years, the occurrence of smog in my country is very serious, and many large, medium and small cities have smog. The emergence of haze weather in cities leads to serious air pollution, which has become a new type of disastrous weather. A large number of fine particles and gas pollutants reduce atmospheric visibility through the absorption, scattering or reflection of sunlight, affect urban air quality, and cause serious harm to human health. In addition, as an important precursor of secondary organic aerosol (SOA) particles, the pollution level and pollution characteristics of volatile organic compounds (Volatile Organic Compounds, VOCs) during haze directly affect the formation of haze pollution. Therefore, it is of great significance to study the...

AI Technical Summary

Problems solved by technology

However, the on-site monitoring instruments of the existing air pollution monitoring system have the following deficiencies: (1) There are many components and related accessories, and the instrument is bulky and heavy; (2) It needs to be assembled, fixed and Debugging is time-consuming and labor-intensive; (3) The transportation process needs to be disassembled and loaded again, and it is inconvenient to move, and it is often moved up and down, which is time-consuming, labor-intensive and may cause a certain loss to the instrument; (4) The monitoring instrument detects The data cannot be transmitted to relevant departments in real time, and accurate and timely data transmission cannot be realized

[0005] In addition, limited by the current online and offline methods, it is difficult to obtain the particle size and chemical composition of urban particulate matter, the composition and concentration of VOCs over time at a relatively high time resolution in existing technologies, and the limit value for its generation mechanism and related control technology research

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