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Method for estimating concentration of secondary organic carbon in particulate matters in environment air

A secondary organic carbon, ambient air technology, applied in the direction of analyzing materials, instruments, etc., to achieve the effect of stable and reliable testing methods and ensuring accuracy

Inactive Publication Date: 2016-10-12
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0005] The specific technical problem to be solved in the present invention is how to directly measure ambient air PM 2.5 The problem of obtaining the SOC concentration from the secondary inorganic ion concentration, thus providing a method for estimating the secondary organic carbon concentration of fine particulate matter in ambient air

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  • Method for estimating concentration of secondary organic carbon in particulate matters in environment air
  • Method for estimating concentration of secondary organic carbon in particulate matters in environment air
  • Method for estimating concentration of secondary organic carbon in particulate matters in environment air

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Embodiment Construction

[0026] According to the present invention, ambient air PM in Taiyuan City 2.5 Taking the estimation and analysis of SOC concentration in the medium as an example, in combination with the accompanying drawings, the specific implementation modes of the present invention are further described in detail with examples, which are subject to the realization of those skilled in the art. This embodiment is a detailed description of the present invention and does not limit the present invention in any way.

[0027] Implement a kind of estimating ambient air PM that the present invention provides 2.5 The method for middle SOC concentration, this method specifically comprises the following steps:

[0028] First, collect samples. The sampling points are ambient air quality monitoring points in Taiyuan City, which are located in various functional areas, namely industrial areas, residential areas, traffic-intensive areas, commercial areas, etc.; the sampling period is four quarters Rainy,...

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Abstract

The invention provides a method for estimating the concentration of secondary organic carbon (SOC) in particulate matters in environment air. The method comprises the following steps: firstly, determining the concentrations of SO4<2->, NO3<->, NH4<+>, organic carbon and element carbon in PM2.5 (Particulate Matter 2.5) in the environment air; calculating by utilizing the concentrations of the organic carbon and the element carbon to obtain the concentration of the secondary organic carbon in the PM2.5; establishing a regression model for describing a mutual relation of the SO4<2->, the NO3<->, the NH4<+> and the secondary organic carbon; finally, estimating the concentration of the secondary organic carbon by applying the model through the concentrations of the SO4<2->, the NO3<-> and the NH4<+> in the PM2.5. The concentration of the secondary organic carbon is estimated by utilizing the correlation between secondary pollutants in the PM2.5 and the problem of how to obtain the concentration of the SOC through directly determining the concentration of secondary inorganic ions in the PM2.5 in the environment air is solved, so that a theoretical foundation is provided for source analysis and environment behavior of the secondary organic carbon.

Description

technical field [0001] The invention relates to a method for estimating the concentration of secondary organic carbon in fine particulate matter in ambient air, in particular to estimating the concentration of secondary organic carbon in fine particulate matter in ambient air by establishing a regression model of the relationship between the concentration of inorganic ions in fine particulate matter and the concentration of secondary organic carbon method. technical background [0002] Fine particulate matter with an aerodynamic diameter of less than 2.5 microns is called PM 2.5 , PM 2.5 The main component is secondary organic carbon (SOC). Secondary organic carbon (SOC) is indirectly generated by precursors such as volatile organic compounds or semi-volatile organic compounds through gas-solid conversion, condensation, adsorption, and photochemical reactions. It is harmful to human health. , visibility, and climate have important influences. SOC components include polycy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00
CPCG01N15/00
Inventor 刘效峰牟玲白慧玲张大宇
Owner TAIYUAN UNIV OF TECH
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