Method and its device for collecting yellow sand and its measuring method and device
A particle and yellow sand technology, which is applied in the field of collecting floating yellow sand particles in the atmosphere, can solve the problems of impossibility, difficulty, and difficult pre-processing of analysis
Inactive Publication Date: 2006-12-06
SHIMADZU SEISAKUSHO CO LTD
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Problems solved by technology
In this case, there are problems that, for example, it is difficult to irradiate only the particles with X-rays in a fluorescent X-ray analyzer or the like, and a substantial analysis is impossible, or pre-processing is difficult, etc.
[0006] In addition, in the case of measuring the particle size distribution of yellow sand particles using an existing measuring device based on the existing multi-stage impactor method, in principle, the resolution (resolution) of the particle diameter is determined by the number of collecting plates , so it cannot be expected to use high dispersion to determine the particle size distribution
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[0019] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020] Fig. 1 is a configuration diagram of an embodiment of the present invention. It is a diagram showing a combination of a collection device 10 and a laser diffraction / scattering type particle size distribution measuring device 20 for measuring the particle size distribution and particle concentration of yellow sand particles collected by the collection device 10 .
[0021] The collection device 10 is mainly composed of a collection container 1 , a pump 2 , and a discharge electrode 3 and a dust collection electrode 4 provided in the collection container 1 . A collection container 1 having an openable and closable cover 1 a is formed with an atmospheric air inlet 1 b and a delivery port 1 c leading to a suction port of a pump (compressor for collection) 2 . With the lid 1a closed, the pump 2 is driven to suck air into the collection container 1 through the inlet 1b...
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Abstract
Method and its device for collecting yellow sand and its measuring method and device. The air is sucked in a collection container by a pump. Particles including the yellow sand particles contained in the air are charged by unipolar ions from a discharge electrode disposed in the collection container. The yellow sand particles are collected on a dust collection electrode having a potential difference between the discharge electrode. The collected particles can be respectively extracted. When the collected particles as a measured object are measured, a laser diffracting / dispersing granularity distribution measurement apparatus is used and finds the granularity distribution and the particle concentration only in a preset particle diameter range of the yellow sand particles, the granularity distribution of the yellow sand particles in the air can be measured at high resolution and the yellow sand particle concentration can be also measured.
Description
technical field [0001] The invention relates to a method and a device for collecting floating yellow sand particles in the atmosphere, and a method and device for measuring the yellow sand particles collected by the method. technical background [0002] The sand from the deserts in the mainland of China is blown up by strong winds and carried across the ocean by the northwesterly wind to Japan as yellow sand. The diameters of yellow sand particles vary from region to region. It is said that in mainland China, which is close to the place where yellow sand is produced, the diameter of yellow sand particles is 20 to 30 μm. In Japan, which is far from the place where the yellow sand is produced, the diameter of the yellow sand particles is 4 to 5 μm. [0003] In order to investigate the shape of yellow sand particles in the atmosphere, or to identify the chemical substances contained in them, the yellow sand particles in the atmosphere are collected by filters, observed with a...
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IPC IPC(8): G01N15/02G01N15/00B03C3/04G01N1/02G01N1/24G01N33/24
CPCG01N1/24B03C3/017B03C3/41B03C3/47B03C2201/10B03C3/04
Inventor 十时慎一郎
Owner SHIMADZU SEISAKUSHO CO LTD