Method for testing passive sedimentation concentration of particulate matters of human body

A testing method and particle technology, applied in particle suspension analysis, measuring device, suspension and porous material analysis, etc., can solve the problem of low precision of passive sedimentation exposure

Inactive Publication Date: 2019-07-26
TIANJIN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a method for testing the concentration of passive sedimentation of human particulate matter, and solve the problem of low accuracy of the research method of passive sedimentation exposure in the prior art

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  • Method for testing passive sedimentation concentration of particulate matters of human body
  • Method for testing passive sedimentation concentration of particulate matters of human body

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] The present invention uses specific fluorescent particles to characterize passive sedimentation particles. Such as figure 1 As shown, the passive deposition sampling method of particulate matter at a specific time is firstly used to sample passive deposition of particulate matter. Second, use a fluorescence microscope to obtain high-resolution images of on-sample particles. Then, the particle number on the sample is counted by using the particle image sampling sample automatic counting method. Thus, the passive exposure concentration of particulate matter can be obtained. The relative error in the analysis of different situations is tested and analyzed by using the calibration method of particle sedimentation. figure 2 Shown is the comparison and calibration chart of glass sampling sheet and PTFE sampling membrane sampling method. ...

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Abstract

The invention discloses a method for testing passive sedimentation concentration of the particulate matters of the human body, and particularly relates to a method for quantitatively measuring the passive exposure of the human particulate matters by combining a core technology of a fluorescent particle tracing and marking technology, a particulate matter passive sedimentation concentration sampling method, a particulate matter image sampling sample automatic counting method and the like. Previous indirect analysis of human exposure is developed into a direct test of human exposure. The methodintegrates the sampling method, the calibration method, the test method and the statistical method for the passive sedimentation concentration of the particulate matters, and can accurately test the passive sedimentation concentration of the particulate matters of the human body. The establishment of the method provides possibility for passive sedimentation exposure analysis of the particulate matters of the human body, which has very important significance for the research of the health threat of the particulate matters.

Description

technical field [0001] The invention relates to a method for testing the concentration of particulate matter in a human body, in particular to a method for testing the passive sedimentation concentration of particulate matter in a human body. Background technique [0002] The concept of personal exposure is defined as the exposure of a person to a substance in an environment. The exposure of personnel to particulate matter can be further refined into the exposure amount of particulate matter actively inhaled and the exposure amount of particulate matter passively deposited. [0003] Actively inhaled particle exposure is the particle exposure that enters the human body through breathing, which can be measured using active optical particle counters and other instruments. Particulate pollutants in the air will also fall on exposed surfaces such as human skin and eyes through passive deposition. When these particles carry bacteria, viruses or allergens, it will cause discomfor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/0612
Inventor 刘俊杰任键林
Owner TIANJIN UNIV
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