Aerosol Detection Device Based on Spark-Induced Breakdown Spectroscopy and Raman Spectroscopy

A Raman spectroscopic detection and induced breakdown technology, applied in measurement devices, Raman scattering, material analysis by optical means, etc., can solve the problem of inability to capture aerosol transient events and dynamic characteristics, limited value, and lack of measurement results Timeliness and other issues, to achieve the effect of facilitating element identification and quantitative analysis, simplifying detection steps, and saving detection costs

Active Publication Date: 2022-04-12
CHINA UNIV OF MINING & TECH
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Problems solved by technology

This method usually only provides time-averaged concentrations and cannot capture the transient events and dynamic characteristics of aerosols
Furthermore, the measurement results obtained by filtration-based methods lack timeliness and are of very limited value in pollution prevention process control and occupational safety

Method used

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  • Aerosol Detection Device Based on Spark-Induced Breakdown Spectroscopy and Raman Spectroscopy
  • Aerosol Detection Device Based on Spark-Induced Breakdown Spectroscopy and Raman Spectroscopy
  • Aerosol Detection Device Based on Spark-Induced Breakdown Spectroscopy and Raman Spectroscopy

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing.

[0019] Such as figure 1 and figure 2 As shown, the present invention provides an aerosol detection device based on spark-induced breakdown spectroscopy and Raman spectroscopy, including a housing 10, a spark-induced breakdown spectroscopy detection mechanism, and a Raman spectrum detection mechanism;

[0020] The inner center of the housing 10 is provided with a reaction chamber 9, and a convex portion 12 extending downward is provided at the upper center of the reaction chamber 9; Vertical through hole A11; the bottom of the housing 10 is provided with a vertical installation hole A13 communicating with the lower outer space and the lower part of the reaction chamber 9, and on the front side of the vertical installation hole A13 is provided with a connection with the lower outer space and the lower part of the reaction chamber 9 The oblique through hole 15; the front pa...

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Abstract

An aerosol detection device based on spark-induced breakdown spectroscopy and Raman spectroscopy, a reaction chamber is opened in the inner center of the housing; vertical through holes A and vertical mounting holes are opened on the upper, lower and front parts of the housing A and a rotating through hole, and an oblique through hole is opened on the front side of the vertical mounting hole A; a probe mounting hole is opened on the left part of the housing; an optical window is opened on the right part of the housing; the vertical through hole A An aerosol inlet pipeline is installed at the upper end of the vertical through hole A, and the inner diameter of the lower end of the vertical through hole A gradually shrinks downward to form a shrinking nozzle; an aerosol discharge pipeline is installed at the lower end of the oblique through hole; Composed of a rotating shaft, a high-voltage electrode, a high-voltage pulse generator and a lens; the inner end of the rotating shaft is a flat structure, and is rotatably installed in the rotating through hole; the high-voltage electrode is installed in the vertical mounting hole A; the lens is installed in the In the optical window; the Raman probe is installed in the probe mounting hole. The device can detect aerosol samples in real time.

Description

technical field [0001] The invention belongs to the technical field of environmental protection detection, in particular to an aerosol detection device based on electric spark induced breakdown spectrum and Raman spectrum. Background technique [0002] For workers in industrial workplaces, they are constantly exposed to air containing harmful particles, which can easily pose significant health risks. Therefore, the real-time determination of the chemical composition and concentration of the aerosol is extremely important for preventing exposure and protecting the health of workers. [0003] Currently, filters are widely used in the measurement of aerosol chemistry in the workplace. Specifically, the filter is used to collect particles for several hours before being analyzed in the laboratory. This method usually only provides time-averaged concentrations, and cannot capture the transient events and dynamic characteristics of aerosols. Furthermore, the measurement results o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/71G01N21/65G01N21/01
CPCG01N21/71G01N21/65G01N21/01G01N2021/0112
Inventor 郑丽娜刘浩然韩臻
Owner CHINA UNIV OF MINING & TECH
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