Single-particle sampler

A sampler, single particle technology, applied in sampling devices and other directions, to achieve the effect of increasing sample capacity, easy portability, and simple equipment

Active Publication Date: 2011-10-19
QINGDAO GENSTAR ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no domestic report on equipment for sampling single particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A single particle sampler, comprising an air inlet 10, a sampling head 21, an air pump 13, a flow meter 18 and an air outlet 12; the air inlet 10 communicates with the air inlet 1 of the sampling head through a vent pipe 11, and the air outlet 12 The air outlet 2 of the sampling head is communicated with through the air pipe 11, and a flow meter 18 is installed on the air pipe 11; the air outlet 12 is communicated with the air pump 13; it is characterized in that the sampling head is a single particle sampling head 21, Including air inlet nozzle 1, air outlet nozzle 2, acceleration chamber 3, collection chamber 4 and sample stage, wherein the upper end of the air inlet nozzle 1 and the acceleration chamber 3 is connected through a sealing ring 20, and the lower end of the air outlet nozzle 2 and the collection chamber 4 is through a sealing ring 20 connected, the acceleration chamber 3 and the collection chamber 4 are connected through the cutting aperture 5 of the sampl...

Embodiment 2

[0052] A single particle sampler as described in Example 1, the difference is that the number of single particle sampling heads is 2; the diameter of the sampler cutting aperture is 0.5 mm.

[0053] The height of the acceleration chamber is 15mm, and the inner diameter of the upper end of the acceleration chamber is 6.5mm. The inner diameter of the upper end of the acceleration chamber is 13 times the inner diameter of the lower end.

Embodiment 3

[0055] The single particle sampler is different in that the number of single particle sampling heads is 3; the diameter of the cutting hole of the sampler is 0.5 mm.

[0056] The height of the acceleration chamber is 17mm, the inner diameter of the upper end of the acceleration chamber is 8mm, and the inner diameter of the upper end of the acceleration chamber is 16 times of the inner diameter of the lower end.

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Abstract

The invention relates to a single-particle sampler, comprising an air inlet, a sampling head, an air pump, a flowmeter and an air outlet, wherein the air inlet is communicated with an admission nozzle of the sampling head by a vent pipe; the air outlet is communicated with an air outlet nozzle of the sampling head by the vent pipe; the flowmeter is arranged on the vent pipe; and the air outlet iscommunicated with the air pump. The single-particle sampler is characterized in that the sampling head is a single-particle sampling head and comprises the admission nozzle, the air outlet nozzle, anaccelerating chamber, a collecting chamber and a sample platform, wherein the admission nozzle is hermetically connected with the upper end of the accelerating chamber; the air outlet nozzle is hermetically connected with the lower end of the collecting chamber; the accelerating chamber is communicated with the collecting chamber by a hole; the accelerating chamber is funnel-shaped; the collecting chamber is internally provided with the sample platform; and a sampling membrane is arranged on the upper end surface of the sample platform. When being used for collecting single particles in the atmosphere, the single-particle sampler has the advantages of short sampling time, convenience in carrying, simpleness in operation, independent direct-current power supply, and the like.

Description

technical field [0001] The invention relates to a single particle sampler, which belongs to the technical fields of environmental analysis and atmospheric sampling. Background technique [0002] At present, in the field of domestic atmospheric sampling and routine monitoring, almost all of them use the method of overall sample collection to obtain the mass concentration and number concentration of particulate matter. With the influence of atmospheric aerosol mixing state on climate and health, the understanding of atmospheric single particles is becoming more and more important in the field of atmospheric science. Research reports have shown that atmospheric single particles such as sulfate, organic particulate matter, heavy metal particles, and soot (also known as black carbon) mix with each other into internal mixed particles, which have an increasing impact on climate and human health. However, there is no domestic report on equipment for sampling single particles. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/04
Inventor 李卫军章琦韩明利崔逸如周深圳
Owner QINGDAO GENSTAR ELECTRONICS TECH CO LTD
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