Atmospheric particulate matter single-sampling channel dual-parameter monitor and monitoring method

Abstract

The invention discloses a single sampling channel dual-parameter monitor and a monitoring method for atmospheric particulate matter. The monitor includes a sample gas channel, a light scattering measurement module and a beta ray measurement module sequentially arranged on the sample gas channel, and data processing. unit, wherein the light scattering measurement module is used to measure the ratio of PM10 and PM2.5 by the light scattering method, the beta measurement module is used to measure the concentration of PM10 by the beta ray method, and the data processing unit is used to measure the PM10 concentration according to the light scattering method The PM2.5 concentration is calculated from the ratio provided by the measurement module and the PM10 concentration measured by the beta measurement module. This method uses one device to measure the concentration of two particle sizes, highly combines the advantages and bridges of the beta method and the light scattering method, and realizes low-cost, low-complexity, simple equipment, and simple maintenance products.

Description

Technical field[0001]The present invention relates to the field of atmospheric environment PM2.5 and PM10, and more particularly to a dual-parameter monitor and monitoring method of atmospheric particulate single sample channel.Background technique[0002]PM2.5 is also known as fine particulate matter, fine particles, refers to particulate matter having an air dynamic equivalent diameter of less than or equal to 2.5 microns. It can be suspended for a long time in air, the higher the content concentration in the air, the more serious the air pollution. PM10 is also known as intralative particulate matter refers to a particulate matter of an air dynamic equivalent diameter ≤10 microns.[0003]The common measurement method of PM2.5 concentration is: weight method, β-ray absorption method, micro-oscillating balance method, as of now, because any measurement has an error, there is virtually no instrumentation can accurately determine PM2 in the atmosphere .5 quality concentration. Like the o...

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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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