Multi-channel PM2.5 particle sampler

A PM2.5 and sampler technology, applied in the direction of sampling devices, etc., can solve the problem of not providing sampling equipment, etc., and achieve the effect of reducing analysis errors

Inactive Publication Date: 2006-07-26
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

[0006] Further, in some occasions, such as the research on atmospheric particulate matter pollution, it is necessary to conduct research on the pollution characteristics, source analysis, and health and environmental impact of atmospheric particulate matter, which requires the sampling and analysis of atmospheric particulate matter. Accurate sampling and analysis of the mass concentration of particulate matter, various chemical components and their micro-morphological characteristics, etc., but there is no sampling device for the above-mentioned analysis purposes at the same time in the prior art

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  • Multi-channel PM2.5 particle sampler

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] figure 1 An embodiment of the sampler of the present invention is shown having four sampling channels: a first sampling channel 10 , a second sampling channel 20 , a third sampling channel 30 and a fourth sampling channel 40 . The four sampling channels are respectively connected with the air pump 50 . When the sampler is working, the air pump 50 draws air to form a negative pressure in each sampling channel, and the air carrying particulate matter is sucked into each sampling channel. In one embodiment, the four sampling channels all operate at a design flow rate of 0.4 l / min. According to the analysis purposes of the collected samples, the four sampling channels are respectively: water-soluble component sampling channel, inorganic multi-element sampling channel, carbonaceous component sampling channel and single particle sa...

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Abstract

The invention discloses a PM2.5 particulate mass sampler with four sampling channels: in the first sampling channel, the sampling head includes a PM2.5 cutter, a diffused solution container, Teflon filter membrane and nylon filter membrane; the sampling head in the second sampling channel includes a PM2.5 cutter and Teflon filter membrane; the sampling head in the third sampling channel includes PM2.5 cutter and two-layer quartz membrane; the sampling head in the forth sampling channel includes PM2.5 cutter and polycarbonate membrane.

Description

technical field [0001] The invention relates to a PM for collecting atmospheric fine particles 2.5 Particle sampler. Background technique [0002] PM 2.5 Refers to atmospheric particulate matter with an aerodynamic diameter less than or equal to 2.5 μm, which has a wide range of sources and a very complex chemical composition. According to different research purposes, PM 2.5 There are various sampling and analysis methods. The U.S. Environmental Protection Agency added a new standard for PM in the revision proposal of the ambient air particulate matter standard proposed in 1997. 2.5 standards, and determined the Federal Recommended Method (Federal Reference Method) and the Federal Equivalent Sampling Method (Federal Equivalence Method). [0003] PM 2.5 A particle sampler is a device for sampling atmospheric fine particles. The sampler usually includes a sampling head with a sealed connection, a flow regulating device and an air pump. The working process of the sampler...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/20G01N1/24
Inventor 贺克斌杨复沫马永亮范朝马越超时宗波
Owner TSINGHUA UNIV
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