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Aerosol monitoring system and method

A monitoring system and aerosol technology, applied in the direction of measuring devices, fluorescence/phosphorescence, instruments, etc., can solve the problems of long time consumption, difficulty in judging the concentration, and inability to realize real-time monitoring, etc., and achieve the effect of controlling the trigger delay

Inactive Publication Date: 2022-05-10
中船重工安谱(湖北)仪器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For the detection of microorganisms in the air, the traditional analysis method is the biological culture method, that is, the aerosol samples in the air are collected and cultured in the medium for several hours to several days to form colony units, so as to obtain reliable biological information in the aerosol. Although this method can obtain biological species information, it takes a long time, and it is difficult to judge its concentration in the air, let alone realize real-time monitoring

Method used

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  • Aerosol monitoring system and method
  • Aerosol monitoring system and method
  • Aerosol monitoring system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0077] Use an aerosol generator to generate 1.0 μm standard PSL (polystyrene) pellets into gas, enter the sample flow gas path from the particle cutter 33, and form a sheath flow effect with the sheath flow gas path 37, and single particles in the sample flow enter Sealed housing 37; individual particles pass through the particle shape detection module respectively figure 1 -B and after, respectively for the particle shape detection module figure 1 -B mid-near infrared detector 32 and ultraviolet detection module figure 1 -In A, the signals received by the second detector 15 and the first detector 18 are analyzed, such as image 3 shown.

[0078] image 3 is the detection map of a single aerosol particle, image 3 The abscissa is time, and the ordinate is detector signal intensity. The peak curves on the left and the peak curves on the right represent the signal intensity changes of the second detector 15 and the first detector 18 in the ultraviolet detection module respec...

Embodiment 2

[0084] The industrial process gas collected from a certain factory is used as the sample gas to enter the sample flow gas path from the particle cutter 33, and after forming a sheath flow effect with the sheath flow gas path 37, a single particle in the sample flow enters the sealed casing 37; a single particle undergoes atomic emission In the spectrum detection module, the rectifier circuit on the high-voltage board of the spark excitation light source 41 discharges, and the two ends of the electrode 43 are broken down by the pulse high voltage, and a spark discharge is generated on the electrode 43 instantaneously, so that the particles are melted, ionized, and evaporated; After a time delay, a stable characteristic spectrum is radiated, and the spectral information is collected by the optical fiber probe 42, and the element composition of the sample gas is analyzed through the position and intensity of the characteristic spectral lines, such as Figure 5 shown.

[0085] F...

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Abstract

The invention relates to an aerosol monitoring system and method, belongs to the technical field of biological aerosol monitoring, and particularly relates to an aerosol monitoring system and method combining an ultraviolet induced fluorescence spectrum technology and an atomic emission spectrum technology. According to the invention, the aerosol gas is monitored by using an ultraviolet-induced fluorescence spectrum technology and an atomic emission spectrum technology. A near-infrared channel is provided for monitoring the particle size of aerosol; biological fluorescence is excited by double ultraviolet channels, so that the fluorescence excitation efficiency is improved, and the fluorescence information of particles is increased; the electric spark induces the atomic emission spectrum, multiple elements can be identified simultaneously, and the aerosol particle element composition is further analyzed. And the aerosol particles are monitored by multiple modules under precise time sequence control, so that the parameter information and judgment accuracy of the aerosol particles are greatly improved.

Description

technical field [0001] The invention relates to an aerosol monitoring system and method, belonging to the technical field of biological aerosol monitoring, and in particular to an aerosol monitoring system and method combined with ultraviolet-induced fluorescence spectroscopy and atomic emission spectroscopy. Background technique [0002] Aerosol is a gaseous dispersion system formed by small solid or liquid particles suspended in a gaseous medium. Aerosol particles generally range in size from 0.01 to 10 μm and can be generated naturally or artificially, including: pollen, unburned smoke, solid dust, etc. It has a huge impact on human health and the living environment. [0003] For the detection of microorganisms in the air, the traditional analysis method is the biological culture method, that is, the aerosol samples in the air are collected and cultured in the medium for several hours to several days to form colony units, so as to obtain reliable biological information i...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N15/02G01N15/14G01N21/71G01N21/64
CPCG01N15/00G01N15/0205G01N15/1434G01N21/718G01N21/64G01N2015/0238G01N2015/1486G01N2015/1477G01N2021/6417
Inventor 隋峰张志涛魏东李文博
Owner 中船重工安谱(湖北)仪器有限公司
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