Method for simulating salt aerosol human body exposures and special device thereof

An aerosol and salt technology, applied in the direction of measuring devices, applications, medical science, etc., can solve the problems of explaining health effects, etc., and achieve the effects of good repeatability, easy removal, and uniform particles

Inactive Publication Date: 2012-06-27
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 salt aerosol human body exposures and special device thereof
  • Method for simulating salt aerosol human body exposures and special device thereof
  • Method for simulating salt aerosol human body exposures and special device thereof

Examples

Experimental program
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Embodiment 1

[0033] Embodiment 1, the experiment of simulating the exposure of human body to salt aerosol

[0034] Such as figure 1 As shown, the test device for simulating human exposure to salt aerosols includes: a nebulized aerosol generator 1, a diffusion dryer 2, an exposure chamber 3 and a set of mass concentration and / or The particle detection equipment 4 of number concentration and / or particle size distribution; The atomized aerosol generator 1 and the diffusion dryer 2 are placed outside the exposure cabin 3, and the atomized aerosol generator 1, the The diffusion dryer 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 The equipment consists of a dust concentration meter (Dusttrak) and a fast kinetic energy particle size spectrometer (FMPS);

[0035] The atomized aerosol ...

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Abstract

The invention discloses a method for simulating salt aerosol human body exposures and a special device thereof. A test unit provided by the invention comprises an atomization aerosol generator, a diffusion dryer and an exposure cabin, wherein the salt aerosol generator and the diffusion dryer are arranged at the outer side of the exposure cabin, and the atomization aerosol generator, the diffusion dryer and the exposure cabin are sequentially connected with one another through a port pipeline. The human body exposure method comprises the following steps that: 1) a soluble salt solution is placed in the atomization aerosol generator, the atomization aerosol generator is started, so salt aerosol is generated; 2) the generated salt aerosol is dried via the diffusion dryer, and then reaches the exposure cabin through the port pipeline; and 3) after the salt aerosol in the exposure cabin reaches the concentration which is required by the experiment, people to be tested are placed in the exposure cabin, so the human body salt aerosol control exposure experiment is carried out. The method can effectively carry out the control exposure experiment on human body sulphate, nitrate, ammonium salt and other soluble salts.

Description

technical field [0001] The invention relates to a method for simulating human exposure to salt aerosols and a special device thereof. Background technique [0002] The chemical composition of aerosol is very complex, it contains various trace metals, inorganic oxides, sulfates, nitrates and oxygen-containing organic compounds. In the research on urban aerosol, more and more studies have found that sulfate, nitrate and ammonium salt are important components of the water-soluble components of particulate matter. It is difficult to measure the molecular component concentration of these salts in actual measurement, and generally only the ion concentration of the aerosol aqueous solution can be measured. For example, in 2008-2009, the collection and analysis of Beijing’s atmospheric PM10 (particles with a particle size of less than 10 microns) showed (Mao Huayun, Tian Gang, Huang Yuhu, Li Gang, Song Guangwu, Sulfate and nitric acid in Beijing’s atmospheric environment Salt part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B19/00G01N33/00
Inventor 黄薇尚静朱彤栾胜基于广河韩逸群
Owner PEKING UNIV
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