Mechanism for classifying inhalable particles and measuring concentration as well as detection method thereof

Abstract

The invention relates to a mechanism for classifying inhalable particles and measuring concentration as well as a detection method of the mechanism. One end of a fine particle collecting probe is sequentially communicated with one end of a heat insulating drying chamber, one end of an aerosol neutralizer and one end of a corona discharger; the other end of the corona discharger is divided into two paths, wherein one path is sequentially communicated with a low-voltage cascade-stage striker and a multi-channel electrometer, and the other path is sequentially communicated with a high-voltage electrode electric field and an air purifier. The mechanism disclosed by the invention is small in size, rapid in response, capable of being used for all-weather detection and playing of PM values, designed according to a standard data interface and compatible to various external equipment; the collected sample fine particle gas has collision with free electrons to form electron avalanche; the particles are classified into a plurality of grades according to the inertia of the particles and pneumatic particle sizes; current value generated by deposition of charged fine particles in various particle sizes is measured by the multi-channel electrometer; the concentration of the particles is reflected according to the current value of each particle size, and measurement results are shown in various forms, thus ancillary support and mass reliable data are provided for environmental monitoring and treatment.

Description

technical field [0001] The invention belongs to the field of environmental protection electronic detection equipment, and relates to a mechanism for classifying and measuring concentration of inhalable particulate matter and a detection method thereof, which can provide auxiliary support and massive reliable data for environmental monitoring and treatment. Background technique [0002] Haze is a combination of fog and haze. Smog is common in cities. In many areas of China, "smog" is incorporated into "fog" as a disastrous weather phenomenon for early warning and forecasting, collectively referred to as "smog weather". In recent years, due to the deterioration of air quality, the phenomenon of smog has increased and the harm has become more serious. In case of haze weather, try to take preventive measures, such as: wearing a mask, and try to avoid outdoor activities. In January 2013, there was a large area of ​​smog across the country. On January 4, 2014, the National Dis...

AI Technical Summary

Problems solved by technology

However, most of the above-mentioned analysis methods use off-line analysis technology, which cannot achieve the effect of real-time sampling and monitoring.

Since these techniques require filters to collect samples before analysis, matrix interference is inevitable; and these methods are time-consuming, generally taking hours or even days to collect enough samples for analysis. Chemical analysis

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