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Method for simulating dust aerosol personal exposure and special device for method

An aerosol and aerosol generator technology, applied in application, medical science, surgery, etc., can solve problems such as explaining health effects, and achieve the effect of good repeatability and uniform dust particles.

Inactive Publication Date: 2012-06-13
PEKING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the first two types, although the actual exposure of humans can be studied, it is often difficult to explain the health effects of specific pollutant exposure mechanistically

Method used

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  • Method for simulating dust aerosol personal exposure and special device for method
  • Method for simulating dust aerosol personal exposure and special device for method
  • Method for simulating dust aerosol personal exposure and special device for method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1, the experiment of simulating dust aerosol human exposure

[0034] Such as figure 1 As shown, the test device for simulating human exposure to dust aerosols includes: a dust aerosol generator 1, an electrostatic neutralizer 2, an exposure cabin 3 and a set of mass concentration and / or number of particulate matter in the exposure cabin. The particle detection equipment 4 of concentration and / or particle size distribution; The dust aerosol generator 1 and the static neutralizer 2 are placed outside the exposure cabin 3, and the dust aerosol generator 1, the static electricity The neutralizer 2 and the exposure cabin 3 are sequentially connected through an interface pipeline; the particle detection equipment is placed outside the exposure cabin and connected with the exposure cabin through an interface pipeline, and the particle detection equipment Consists of a dust concentration meter (Dusttrak) and a fast kinetic particle size spectrometer (FMPS);

[0035...

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Abstract

The invention discloses a method for simulating dust aerosol personal exposure and a special device for the method. The test device provided by the invention comprises a dust aerosol generator, a static neutralizer, and an exposure chamber, wherein the dust aerosol generator and the static neutralizer are arranged outside the exposure chamber; and the dust aerosol generator, the static neutralizer, and the exposure chamber are connected sequentially through an interface pipeline. The personal exposure method comprises the following steps: placing particles in the dust aerosol generator and starting the dust aerosol generator to generate dust aerosol; neutralizing surplus electric charges in the generated dust aerosol by the static neutralizer, and reaching the exposure chamber through the interface pipeline; and arranging to-be-tested crowd in the exposure chamber after the dust aerosol in the exposure chamber reaches the concentration needed by experiment, for carrying out the personal dust aerosol control exposure experiment. By adopting the method, the personal dust aerosol control exposure experiments can be effectively carried out.

Description

technical field [0001] The invention relates to a method for simulating human body exposure to dust aerosol and a special device thereof. Background technique [0002] It is estimated that 1000-3000Tg of mineral aerosol enters the atmosphere every year in the world (Rivera-Figueroa, A.M.; et al., Laboratory studies of potential mechanisms of renoxification of tropospheric nitric acid. Environ. Sci. Technol. 2003, 37 (3) , 548-554), among them, the dust produced in the arid and semi-arid regions of the Asian continent, such as the deserts and the Loess Plateau in Northwest my country, is one of the main sources of global atmospheric mineral particles and an important source of deep-sea sediments in the North Pacific Ocean (Johnson, E.R.; Sciegienka, J.; Carlos-Cuellar, S.; Grassian, V.H. Heterogeneous uptake of gaseous nitric acid on dolomite (Ca Mg (CO 3 ) 2 ) and calcite (CaCO 3 ) particles: A knudsen cell study using multiple, single and fractional particle layers. J. Phy...

Claims

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Application Information

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IPC IPC(8): A61B19/00A61B90/00
Inventor 尚静朱彤黄薇栾胜基于广河
Owner PEKING UNIV
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