Atmospheric particulate single sampling channel two-parameter monitor and monitoring method

Abstract

The invention discloses an atmospheric particulate single sampling channel two-parameter monitor and a monitoring method. The monitor comprises a sample gas channel, a light scattering measurement module, a beta ray measurement module, and a data processing unit, the light scattering measurement module and the beta ray measurement module are sequentially arranged on the sample gas channel, whereinthe light scattering measurement module is used for measuring the ratio of PM10 to PM2.3 by using a light scattering method, the beta ray measurement module is used for measuring the concentration ofPM10 by using a beta ray method, and the data processing unit is used for calculating the concentration of PM2.5 according to the ratio provided by the light scattering measurement module and the concentration of the PM10 measured by the beta ray measurement module. The two particle size concentrations are measured by using one piece of equipment, and the advantages and the bridge of the beta method and the light scattering method are highly combined, so that a low-cost low-complexity product easy in equipment and maintenance is achieved.

Description

technical field [0001] The invention relates to the field of PM2.5 and PM10 monitoring in the atmospheric environment, in particular to an atmospheric particulate matter single-sampling-channel dual-parameter monitor and a monitoring method. Background technique [0002] PM2.5, also known as fine particles, fine particles, and fine particles, refers to particles with an aerodynamic equivalent diameter of 2.5 microns or less. It can be suspended in the air for a long time, and the higher its concentration in the air, the more serious the air pollution. PM10, also known as inhalable particulate matter, refers to particulate matter with an aerodynamic equivalent diameter of ≤10 microns. [0003] The commonly used measurement methods for PM2.5 concentration are: gravimetric method, β-ray absorption method, and micro-oscillating balance method. Up to now, because any measurement has errors, there is actually no instrument and equipment that can accurately measure PM2 in the atmo...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a dual-parameter monitor with a single sampling channel for atmospheric particulate matter, which can monitor the concentration of two kinds of particulate matter at the same time with a single device and a single sampling channel, so as to solve the problem of "PM2.5 and PM10 hanging upside down"

[0009] The object of the present invention is also to provide a single-channel dual-concentration monitoring method for atmospheric particulate matter, which can monitor two kinds of particulate matter concentrations at the same time with a single device and a single gas sampling channel, so as to solve the problem of "PM2.5 and PM10 hanging upside down"

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