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Single bioaerosol particle identification system based on laser capture and microwave radiation

A bioaerosol and particle identification technology, applied in individual particle analysis, particle and sedimentation analysis, material analysis using microwave means, etc. Interference and other problems, to achieve the effect of easy observation and recording

Pending Publication Date: 2020-02-21
PEKING UNIV
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  • Claims
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Problems solved by technology

However, due to the large interference of environmental components and the lack of characteristic spectral peaks, particle detection in the actual environment is very challenging, and it is even impossible to distinguish whether the captured particles are biological or abiotic.

Method used

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  • Single bioaerosol particle identification system based on laser capture and microwave radiation
  • Single bioaerosol particle identification system based on laser capture and microwave radiation

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, further describe the present invention in detail through embodiment.

[0026] Such as figure 1As shown, the single bioaerosol particle identification system based on laser capture and microwave radiation in the embodiment of the present invention includes a laser confocal microscope optical tweezers, a microwave directional radiation device and a digital camera 1, wherein the laser confocal microscope optical tweezers are composed of Composed of telephoto objective lens 4, laser confocal microscope 2 input by external laser source and quartz glass cavity 7; microwave directional radiation device is composed of adjustable microwave generator 13, microwave transmission line 12, microwave directional radiation coil 6 and microwave resonant cavity 5 ; The digital camera 1 is placed at the end of the reflected optical path of the microscope and connected with the laser confocal microscope 2 .

[0027] The quartz glass cavity 7...

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Abstract

The invention discloses a single bioaerosol particle identification system based on laser capture and microwave radiation. A laser tweezer is used for fixing and applying directional microwave radiation to distinguish biological and non-biological particles in the atmosphere; meanwhile, a digital camera is combined to record the change of fixed states of the particulate matters to identify singlebioaerosol particles, thus realizing single capturing, fixing, screening and subsequent recording and analysis of biological and non-biological aerosol particles; and the system can be widely appliedto in-situ detection of atmospheric particulates contained in indoor and outdoor environment air, especially in-situ screening and recording of biological particles and non-biological particles in theatmospheric particulates.

Description

technical field [0001] The present invention relates to biological aerosol identification technology, in particular to a technology that uses laser optical tweezers to fix and apply directional microwave radiation to distinguish biological and non-biological particles, and at the same time combines digital cameras to record changes in the fixed state of particles to identify single biological aerosol particles The identification system realizes single capture and fixed screening of biological and non-biological aerosol particles and subsequent record analysis, which can be widely used in the in-situ detection of atmospheric particles contained in indoor and outdoor ambient air, especially the in-situ identification of microbial particles and abiotic particles and record. Background technique [0002] Air pollution has become an environmental issue of widespread concern to society, especially microbial aerosols have a direct and significant impact on human health. Exposure t...

Claims

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Application Information

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IPC IPC(8): G01N15/10G01N15/14G01N22/00
CPCG01N15/10G01N15/1434G01N15/1456G01N22/00G01N2015/144
Inventor 要茂盛李心月陈灏轩
Owner PEKING UNIV
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