Online volatile organic compound underway monitoring system and analysis method

Abstract

The invention discloses an on-line volatile organic compound underway monitoring system and an analysis method. The on-line volatile organic compound underway monitoring system comprises an underway vehicle; an industrial personal computer, a sampling module electrically connected with the industrial personal computer, a detection module, a data acquisition module, a display module, a data analysis module, an equipment control module, a storage module, a transmission module and a GIS module are arranged in the underway vehicle; the sampling module comprises a sampling pipe, a sampler and a nitrogen cylinder, the sampling pipe is connected with the sampler, and the nitrogen cylinder is connected with the sampling pipe and the sampler; and the detection module comprises an extractor, a concentrator and a gas chromatograph-mass spectrometer, the extractor is connected with the concentrator, the concentrator is connected with the gas chromatograph-mass spectrometer, the gas chromatograph-mass spectrometer is electrically connected with the industrial personal computer, and the sampler is connected with the extractor. Low-temperature sampling is kept, real-time quantitative online detection is achieved, pollution portraits in the area are suggested through area navigation, and pollution tracing, peculiar smell tracing, accurate strike and fine management are facilitated.

Description

technical field [0001] The invention relates to the technical field of air quality monitoring, in particular to an online navigation monitoring system and analysis method for volatile organic compounds. Background technique [0002] Volatile Organic Compounds (Volatile Organic Compounds, VOC) refers to the kind of volatile organic compounds that will cause harm. The main components of VOC are: hydrocarbons, halogenated hydrocarbons, oxygen hydrocarbons and nitrogen hydrocarbons, which include: benzene series Chemicals, organic chlorides, freon series, organic ketones, amines, alcohols, ethers, esters, acids and petroleum hydrocarbons, etc., have a huge impact on human health. When VOC reaches a certain concentration, people will feel headache, nausea, vomiting, fatigue, etc. in a short time. Consequences, while VOC outdoors mainly come from fuel combustion and transportation. [0003] Therefore, the monitoring of volatile organic compounds is essential. The traditional VOC...

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Problems solved by technology

[0003] Therefore, the monitoring of volatile organic compounds is essential. The traditional VOC monitoring process is to enter the chromatograph for detection after sampling, after low-temperature storage, transportation, and complex pretreatment processes such as solid-phase extraction, solvent analysis, and low-temperature pre-concentration. Afterwards, a detection and analysis report is formed. The process is cumbersome and samples are easily lost, which in turn affects the detection accuracy. Real-time online monitoring cannot be realized, and the distribution of pollution levels in each area cannot be accurately judged.

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