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Establishment method of atmospheric particulate category, chemical component and microstructure attribute database

A technology of atmospheric particulate matter and chemical composition, applied in the field of environmental science and atmospheric science, can solve problems such as late start, lack of system and integrity, difficulty in continuous improvement of PM2.5 annual average concentration, and high ozone

Pending Publication Date: 2022-03-25
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Application Information

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Problems solved by technology

Although my country has achieved remarkable results in the prevention and control of air pollution, it is still difficult to continuously improve the annual average concentration of PM2.5, and ozone has gradually become the main air pollutant.
[0003] Similar to PM2.5 monitoring, domestic PM2.5 source apportionment work started relatively late, with only sporadic studies distributed in different regions, lacking systematicness and integrity. Therefore, there is an urgent need for an atmospheric particulate matter category, chemical composition, and microstructure attributes Database construction method to solve the above problems

Method used

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  • Establishment method of atmospheric particulate category, chemical component and microstructure attribute database
  • Establishment method of atmospheric particulate category, chemical component and microstructure attribute database
  • Establishment method of atmospheric particulate category, chemical component and microstructure attribute database

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Embodiment 1

[0025] see Figure 1-2 , the construction method of atmospheric particle category, chemical composition, microstructure attribute database, comprises the following steps:

[0026] Step 1: Sampling and chemical analysis: sample atmospheric particulate matter through a sampler, two channels of each sampler are equipped with Teflon membranes for weighing and analysis of ions and metal elements, and the other two are equipped with quartz membranes for organic Carbon (OC) and elemental carbon (EC) analysis, each sample was sampled for 24 hours;

[0027] Step 2: Research on microstructure properties: research by transmission electron microscope-energy spectrum analysis method, aerosol particles are analyzed by TEM (Tecnai G2 F20) operated at 200kV, and elemental composition is determined by energy dispersive X-ray spectrometer (EDX). The instrument can detect elements heavier than carbon (C), nitrogen (N) cannot be detected by EDX, copper (Cu) is also excluded from the analysis, be...

Embodiment 2

[0034] see Figure 1-2 , the construction method of atmospheric particle category, chemical composition, microstructure attribute database, comprises the following steps:

[0035] Step 1: Sampling and chemical analysis: sample atmospheric particulate matter through a sampler, two channels of each sampler are equipped with Teflon membranes for weighing and analysis of ions and metal elements, and the other two are equipped with quartz membranes for organic Carbon (OC) and elemental carbon (EC) analysis, each sample was sampled for 24 hours;

[0036] Step 2: Research on microstructure properties: research by transmission electron microscope-energy spectrum analysis method, aerosol particles are analyzed by TEM (Tecnai G2 F20) operated at 200kV, and elemental composition is determined by energy dispersive X-ray spectrometer (EDX). The instrument can detect elements heavier than carbon (C), nitrogen (N) cannot be detected by EDX, copper (Cu) is also excluded from the analysis, be...

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Abstract

The invention discloses a method for constructing a database of types, chemical components and microstructure attributes of atmospheric particulates, and the method comprises the following steps: sampling, chemical analysis, microstructure attribute research and construction of the database of atmospheric particulates. According to the method, components, categories and sources of atmospheric particulates are identified, a database covering various attributes of the atmospheric particulates is constructed, the construction of an atmospheric particulate database is realized, the atmospheric particulate database is more systematic and complete, climate characteristics and PM2.5 characteristics are combined, an atmospheric particulate component spectrum is continuously perfected, a corresponding analysis technology is provided, and the analysis efficiency is improved. Therefore, a powerful support basis is provided for PM2.5 pollution treatment.

Description

technical field [0001] The invention relates to the fields of environmental science and atmospheric science, in particular to a method for constructing a database of atmospheric particle categories, chemical components, and microstructure attributes. Background technique [0002] Atmospheric particulate matter has various components and complex distribution characteristics. Atmospheric particulate matter refers to solid or liquid particles dispersed in aerosols, also known as dust. Includes dust, smoke, ash, fog, mist, haze, soot and smog. Atmospheric particulate matter has various components, mainly including inorganic matter, organic matter and living matter. Although my country has achieved remarkable results in the prevention and control of air pollution, it is still difficult to continuously improve the annual average concentration of PM2.5, and ozone has gradually become the main air pollutant. [0003] Similar to PM2.5 monitoring, domestic PM2.5 source apportionmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/21G06F16/29G01N23/223G01N23/04
CPCG06F16/21G06F16/29G01N23/04G01N23/223
Inventor 吴健生钱韵易腾云
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL