Beta-ray particulate matter concentration detection sensor and detection method thereof

Abstract

The invention belongs to the technical field of atmosphere pollutant monitoring and particularly relates to a beta-ray particulate matter concentration detection sensor and a detection method thereof.The beta-ray particulate matter concentration detection sensor comprises a shell, a beta-ray generation source, a beta-ray receiver and a dust-measuring chamber; the interior of the shell is a hollowcavity; a gas source inlet and a gas source outlet are formed at the two ends of the cavity; an inlet section and an outlet section of the cavity are particulate matter transfer spaces correspondingly; the dust-measuring chamber is arranged between the inlet section and the outlet section; the beta-ray generation source and the beta-ray receiver are arranged on the dust-measuring chamber and on the two sides of the shell correspondingly. The beta-ray particulate matter concentration detection sensor has the following beneficial effects: the whole instrument is not influenced by the temperature, the humidity and the varieties of the particulate matters, only associates with quality, can realize on-line continuous monitoring and can supervise the air quality of raise dust in a constructionsite.

Description

technical field [0001] The invention belongs to the technical field of air pollutant monitoring, and in particular relates to a sensor for detecting the concentration of beta-ray particulate matter and a detection method thereof. Background technique [0002] Atmospheric particulate matter refers to all substances contained in the atmosphere except gases, including all kinds of solid or liquid aerosols. These include soot, dust, and smoke as solids, and clouds and droplets as liquids. The particle size distribution is as large as 200 microns and as small as 0.1 microns. Statistics show that my country's smoke and dust emissions are declining year by year, but the main pollutants that affect urban air quality are still particulate matter. For my country's cities, the main sources of pollution are air pollution produced in various industrial production processes and residents' coal-burning pollution. In addition, the rapid increase in the number of private cars and municipa...

AI Technical Summary

Problems solved by technology

The disadvantage is that it requires a large amount of manual work. The filter membrane needs to be dried and weighed in the laboratory before and after sampling, the paper is changed and sampled manually, and the concentration of PM10 is calculated manually. Sampling for more than 12 hours cannot reflect the short-term changes in the concentration of atmospheric particulate matter, and cannot reflect changes in severe weather in real time

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