OVOC source analysis method, system, medium and equipment in atmospheric environment

Abstract

The invention discloses an OVOC source analysis method, system, medium and equipment in the atmospheric environment, and relates to the technical field of environmental protection, and the method comprises the steps: monitoring the environment, and collecting pollutant concentration data and environmental data during observation; analyzing a plurality of pollution sources of the primary emission part of the OVOC and the concentration of each compound in each pollution source by utilizing a multiple linear regression model and an atmospheric pollutant source analysis receptor model; and inputting into an atmospheric photochemical box-type model to simulate the net generation rate of each oxygen volatile organic compound. The pollution source concentration is quantitatively reduced, the pollution source concentration and other pollution source concentration data which are not reduced are respectively input into an atmospheric photochemical box-type model to simulate the net generation rate and sensitivity of each OVOC, and quantitative analysis of the secondary generation process of the oxygen-containing volatile organic compounds is realized through a relative increment reaction activity coefficient method. Weighted calculation is carried out on the proportion of a primary emission source and a secondary generation source obtained through a multi-line element regression method, and full-process OVOC source quantitative analysis in the atmospheric environment is achieved.

Description

Technical Field

[0001] The present application relates to the field of environmental protection technology, and in particular to an OVOC source analysis method, system, medium and equipment in an atmospheric environment. Background Art

[0002] Oxygenated volatile organic compounds (OVOCs) are one of the most important volatile organic compounds in the atmosphere. They are intermediate products in the photochemical process, an important source of active free radicals, and make important contributions to ozone and secondary organic aerosols. In the atmosphere, the sources of oxygenated volatile organic compounds (OVOCs) are complex, including direct emissions from natural and anthropogenic sources, as well as photochemical oxidation of volatile organic compounds (VOCs) in the atmosphere, making it extremely difficult to identify the sources of oxygenated volatile organic compounds (OVOCs).

[0003] The earlier method of OVOC source analysis was to determine whether they had the same source and sink based on the correlation coefficient between OVOC concentration and atmospheric pollutants, thereby qualitatively analyzing the source of OVOC. With the advancement of science and technology, multiple linear regression method, atmospheric pollutant source analysis receptor model and atmospheric photochemical box model based on observational data have been applied in OVOC source analysis. However, these methods have their limitations. The multivariate linear regression method can analyze oxygenated volatile organic compounds (OVOC) into primary emission sources, secondary generation sources and background sources, but it cannot finely analyze oxygenated volatile organic compounds (OVOC) into various industries. Due to the strong activity of oxygenated volatile organic compounds (OVOC), there is a certain uncertainty in analyzing the source using the receptor source analysis model. The atmospheric photochemical box model based on observational data is based on the quantitative reduction of precursor concentrations to analyze the sensitivity of different precursors to the generation of oxygenated volatile organic compounds (OVOC), but this method cannot quantitatively analyze the source of oxygenated volatile organic compounds (OVOC).

[0004] In recent years, with the upgrade of air quality model systems, emission-based models can qualitatively analyze the impact of oxygenated volatile organic compound (OVOC) precursors from different sources on the generation of oxygenated volatile organic compounds (OVOC) and the regional transmission of oxygenated volatile organic compounds (OVOC) after generation. The ozone source identification technology embedded in the model can quantitatively analyze the sources of oxygenated volatile organic compounds (OVOC) in ambient air. However, the emission inventory used in the air quality model is the emission of oxygenated volatile organic compound (OVOC) precursors obtained by combining product output and energy consumption with emission factors. There are uncertainties and lags. The inaccuracy of the emission source inventory will cause certain errors in the ozone source analysis results. Summary of the invention

[0005] Based on this, it is necessary to provide a method, system, medium and equipment for analyzing the sources of oxygen-containing volatile organic compounds (OVOCs) in the atmospheric environment in order to address the problem that the above-mentioned technologies cannot quantitatively analyze the sources of OVOCs in the atmospheric environment.

[0006] The present invention adopts the following technical solution: a method for analyzing the source of OVOC in an atmospheric environment, comprising the following steps:

[0007] Acquire pollutant concentration data and environmental condition data in the monitored atmospheric environment, calculate the photolysis rate according to the pollutant concentration data and environmental condition data, and obtain the photolysis parameters;

[0008] The multivariate linear regression model is used to analyze and monitor OVOC, analyze OVOC into primary emission sources, secondary generation sources and background sources, and obtain the contribution ratio of the three sources to OVOC, and at the same time obtain the primary emission part of OVOC and the initial concentration of VOC;

[0009] Inputting the initial concentration into the atmospheric pollutant source analysis receptor model to analyze the OVOC primary emission part and VOC, and obtaining the pollution sources of multiple OVOC primary emission parts and the concentration of each compound in each pollution source;

[0010] The concentration of each compound in the pollution source is summed, the concentration of each compound in the pollution source is quantitatively reduced and added, and the concentration of each compound in the pollution source that has not been reduced is respectively input into the atmospheric photochemical box model to simulate the OVOC generation process, and the net generation rate and the sensitivity of the pollution source to OVOC generation are obtained;

[0011] According to the net generation rate and the sensitivity of the pollution source to OVOC generation, the relative incremental reaction activity coefficient method was used to quantitatively analyze the secondary generation process of OVOC and obtain the analytical results.

[0012] Based on the analysis results, the contribution ratios of primary emission sources and secondary generation sources to OVOC are weighted and calculated to obtain the quantitative analysis results of the full-process OVOC sources in the atmospheric environment.

[0013] The concentration of each compound in the pollution source is added, the concentration of each compound in the pollution source is quantitatively reduced, and the concentration of each compound in the pollution source that has not been reduced is added, and the concentrations are respectively input into the atmospheric photochemical box model to simulate the OVOC generation process, including the following steps:

[0014] The concentration of each compound in the pollution source is summed up as the initial emission scenario and input into the atmospheric photochemical box model to simulate the net generation rate of each OVOC;

[0015] The concentration of each compound in different pollution sources is quantitatively reduced and added, as well as the concentration of each compound in the unreduced pollution sources, and then input into the atmospheric photochemical box model to simulate the net generation rate of each OVOC.

[0016] The method of quantitatively analyzing the OVOC secondary generation process by using the relative incremental reaction activity coefficient method based on the net generation rate and the sensitivity of the pollution source to the generation of OVOC to obtain the analysis results includes the following steps:

[0017] The relative incremental reactivity coefficient is used to characterize the sensitivity of OVOC, and the sensitivity of the pollution source to each type of OVOC generation is obtained respectively. The relative incremental reactivity coefficient method is used to analyze the source of OVOC secondary generation. The calculation formula is as follows:

[0018]

[0019] in, is the average relative incremental reaction activity coefficient of pollution source X to the generation of oxygen-containing volatile organic compounds OVOC; RIR(X) is the relative incremental reaction activity coefficient of pollution source X to the generation of oxygen-containing volatile organic compounds OVOC in each sample; Net(OVOC) is the net generation rate of oxygen-containing volatile organic compounds OVOC under the initial scenario; n is the number of samples; Contribution(X) is the contribution of pollution source X to the secondary generation of OVOC; con(X) is the concentration of pollution source X; m is the number of pollution sources.

[0020] A system for analyzing the source of oxygen-containing volatile organic compounds (OVOC) in an atmospheric environment, comprising:

[0021] The data acquisition module is used to monitor the pollutant concentration data and environmental condition data in the atmospheric environment, calculate the photolysis rate, and obtain the photolysis parameters; wherein the pollutant concentration data includes OVOC concentration and VOC concentration;

[0022] The data analysis module is used to analyze and monitor OVOC using a multivariate linear regression model, analyze OVOC into primary emission sources, secondary generation sources, and background sources, and obtain the contribution ratios of the three sources to OVOC, and simultaneously obtain the initial concentrations of the primary emission part of OVOC and VOC; the initial concentration is input into the atmospheric pollutant source analysis receptor model to analyze the primary emission part of OVOC and VOC, and obtain the pollution sources of multiple primary emission parts of OVOC and the concentration of each compound in each pollution source;

[0023] A data simulation and analysis module is used to input the concentration of each compound in the pollution source, the concentration of each compound in the pollution source that is quantitatively reduced and summed, and the concentration of each compound in the pollution source that is not reduced into the atmospheric photochemical box model to simulate the OVOC generation process, and obtain the net generation rate and the sensitivity of the pollution source to OVOC generation;

[0024] The quantitative analysis module is used to quantitatively analyze the secondary generation process of OVOC based on the net generation rate and the sensitivity of the pollution source to OVOC generation, and obtain the analysis results by using the relative incremental reaction activity coefficient method; based on the analysis results, the contribution ratio of primary emission sources and secondary generation sources to OVOC is weightedly calculated to finally obtain the quantitative analysis results of the entire process OVOC source in the atmospheric environment.

[0025] The beneficial effects of the present invention: Based on the observation data of oxygen-containing volatile organic compounds (OVOC), a variety of models are combined to analyze the primary emission and secondary generation of oxygen-containing volatile organic compounds (OVOC), and finally realize the quantitative source analysis of the whole process of oxygen-containing volatile organic compounds (OVOC). First, based on the observation data, the present invention first calculates the initial concentration of the primary emission part of oxygen-containing volatile organic compounds (OVOC), avoiding the influence of photochemical reactions, so that the analysis results are more accurate. For the secondary generation part of oxygen-containing volatile organic compounds (OVOC), the atmospheric photochemical box model is coupled with the atmospheric pollutant source analysis receptor model to determine the sensitive source of the real oxygen-containing volatile organic compounds (OVOC) generation and realize the quantitative source analysis of the secondary generation process. The method of combining multiple models is used to analyze the primary emission and secondary generation pollution sources of oxygen-containing volatile organic compounds (OVOC), realize the quantitative source analysis of the whole process, and establish a new method for the analysis and chemical behavior of oxygen-containing volatile organic compounds (OVOC) in the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 This is a flow chart of the quantitative source analysis of oxygen-containing volatile organic compounds (OVOC) throughout the entire process of the present invention;

[0028] Figure 2 It is a schematic diagram of the process structure of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of this specification more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in the specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] The present invention proposes a full-process oxygen-containing volatile organic compound (OVOC) source analysis method based on observation data. This method is a method that analyzes the primary emission and secondary generation of oxygen-containing volatile organic compounds (OVOC) based on observation data and combined with multiple models. The method first monitors the concentration of oxygen-containing volatile organic compounds (OVOC) and volatile organic compounds (VOC) in the ambient air, and collects NO during the observation period. 2 , NO, CO, O 3 The pollutant concentration data and meteorological parameters such as temperature, humidity, and pressure are used to calculate the photolysis rate. Then, the monitored oxygenated volatile organic compounds (OVOC) are preliminarily analyzed using a multivariate linear regression model, and oxygenated volatile organic compounds (OVOC) are analyzed into primary emission sources, secondary generation sources, and background sources. The initial concentrations of the primary emission part of oxygenated volatile organic compounds (OVOC) and other volatile organic compounds (VOC) are calculated, and the calculated initial concentrations are input into the atmospheric pollutant source analysis receptor model to analyze the pollution source composition of the primary emission part of oxygenated volatile organic compounds (OVOC), and the concentration of each compound in each pollution source is obtained at the same time. Subsequently, the concentration of each compound in the pollution source is added as the initial emission scenario and input into the atmospheric photochemical box model to simulate the net generation rate of each oxygenated volatile organic compound (OVOC). The concentrations of different pollution sources are quantitatively reduced and the concentration data of other unreduced pollution sources are respectively input into the atmospheric photochemical box model to simulate the net generation rate of each oxygenated volatile organic compound (OVOC), and the relative incremental reaction activity coefficient method is used to realize the quantitative analysis of the secondary generation process of oxygenated volatile organic compounds (OVOC). Finally, the proportions of primary emission sources and secondary generation sources calculated by the multivariate linear regression method were weighted to ultimately achieve quantitative analysis of the sources of oxygen-containing volatile organic compounds (OVOCs) in the entire process in the atmospheric environment.

[0031] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] Example 1

[0033] A method for full-process source analysis of oxygenated volatile organic compounds in the atmospheric environment, which is a method for analyzing the primary emission and secondary generation of oxygenated volatile organic compounds (OVOC) based on observation data and combined with multiple models, specifically comprising the following steps:

[0034] (1) Monitor the concentration of oxygen-containing volatile organic compounds (OVOC) and other volatile organic compounds (VOC) in the ambient air, collect data on the concentration of pollutants such as NO2, NO, CO, O3, and environmental conditions during the observation period, including meteorological parameters such as temperature, humidity, and pressure, and calculate the photolysis rate.

[0035] (2) Appropriate species were selected as tracers of primary emissions and secondary generation, and a multivariate linear regression model was used to preliminarily analyze the monitored oxygenated volatile organic compounds (OVOCs). The oxygenated volatile organic compounds (OVOCs) were analyzed into primary emission sources, secondary generation sources, and background sources, and the contribution ratios of the three sources to OVOCs were calculated.

[0036] (3) Calculate the initial concentration of oxygenated volatile organic compounds (OVOC) and the initial concentration of the primary emission of other volatile organic compounds (VOC).

[0037] (4) The initial concentration calculated in step (3) is input into the PMF model to analyze the pollution source composition of the primary emission of oxygen-containing volatile organic compounds (OVOC), and the concentration of each compound in each pollution source is obtained.

[0038] (5) The pollutant concentration data in step (1) and the results of the quantitative emission reduction of each pollution source in step (4) are respectively input into the atmospheric chemical reaction box model to simulate the oxygen-containing volatile organic compounds (OVOCs) generation process and calculate the net generation rate and the sensitivity of each emission source to the generation of oxygen-containing volatile organic compounds (OVOCs).

[0039] (6) Based on the sensitivity results calculated in step (5), the relative incremental reaction activity coefficient method is used to achieve quantitative analysis of the secondary generation process of oxygen-containing volatile organic compounds (OVOC).

[0040] (7) Based on the analysis results of the primary emission sources of oxygen-containing volatile organic compounds (OVOCs) obtained in step (3) and the analysis results of the secondary generation process sources of oxygen-containing volatile organic compounds (OVOCs) obtained in step (6), the primary emission sources and secondary generation sources calculated by the multi-line linear regression method are weighted, and finally a quantitative analysis of the sources of oxygen-containing volatile organic compounds (OVOCs) in the entire process in the atmospheric environment is achieved.

[0041] In the step (1), the oxygen-containing volatile organic compound (OVOC) and other volatile organic compound (VOCs) compounds, the oxygen-containing volatile organic compound (OVOCs) compounds mainly refer to the oxygen-containing volatile organic compound (OVOC) compounds that make an important contribution to atmospheric photochemical reactions.

[0042] The atmospheric chemical reaction box model coupled with the PMF receptor model established in step (6) is a method for analyzing the secondary generation sources of oxygen-containing volatile organic compounds (OVOC) and includes the following steps: ① using the PMF model to analyze the sources of oxygen-containing volatile organic compounds (OVOC) precursors; ② combining the PMF source analysis results and the model principle to obtain the concentration of each precursor in each oxygen-containing volatile organic compound (OVOC) emission source; ③ summing up the pollution source concentrations as the initial emission scenario and inputting it into the box model to simulate the net generation rate of each oxygen-containing volatile organic compound (OVOC); ④ quantitatively reducing the concentrations of different pollution sources and adding the concentration data of other unreduced pollution sources, respectively inputting them into the box model to simulate the net generation rate of each oxygen-containing volatile organic compound (OVOC); ⑤ characterizing the sensitivity of oxygen-containing volatile organic compounds (OVOC) with the relative incremental reaction activity coefficient, respectively calculating the sensitivity of different pollution sources to the generation of each oxygen-containing volatile organic compound (OVOC), and using the relative incremental reaction activity coefficient method to realize the secondary generation source analysis of oxygen-containing volatile organic compounds (OVOC). The specific calculation formula is as follows:

[0043]

[0044] In the formula, is the average relative incremental reaction activity coefficient of pollution source X to the generation of oxygen-containing volatile organic compounds OVOC; RIR(X) is the relative incremental reaction activity coefficient of pollution source X to the generation of oxygen-containing volatile organic compounds OVOC in each sample; Net(OVOC) is the net generation rate of oxygen-containing volatile organic compounds OVOC under the initial scenario; n is the number of samples; Contribution(X) is the contribution of pollution source X to oxygen-containing volatile organic compounds OVOC.

[0045] Example 2

[0046] Taking the source analysis of oxygen-containing volatile organic compounds (OVOC) in the atmospheric environment of a city as an example, combined with Figure 1 The steps shown specifically include the following steps:

[0047] Basic volatile organic compound (VOC) data collection. The monitoring points are set up at the existing automatic ambient air quality monitoring stations to obtain the hourly concentration data of oxygen-containing volatile organic compounds (OVOC) and other volatile organic compounds (VOC) in the ambient air; June and January are selected as representative months of the heating season and non-heating season, and each season is monitored continuously for one month; during the monitoring period, NO 2 , NO, CO, O 3 The pollutant concentration data and meteorological parameters such as temperature, humidity and pressure are used to calculate the photolysis rate using the TUV model.

[0048] Preliminary analysis of oxygen-containing volatile organic compounds (OVOC). Select CO, acetylene, toluene, NOx, etc. as primary emission tracers, and select O 3 , Ox, glyoxal, etc. were used as secondary generation tracers, and the multivariate linear regression model was used to preliminarily analyze the monitored oxygen-containing volatile organic compounds (OVOC), and the oxygen-containing volatile organic compounds (OVOC) were analyzed into primary emission sources, secondary generation sources and background sources, and the contribution ratio of the three sources to oxygen-containing volatile organic compounds (OVOC) was calculated.

[0049] Calculation of initial concentration of volatile organic compounds (VOC). The photochemical age method is used to calculate the initial concentration of the primary emission of oxygen-containing volatile organic compounds (OVOC) and other volatile organic compounds (VOC).

[0050] Analysis of primary emission sources of oxygenated volatile organic compounds (OVOC). The calculated initial concentration of volatile organic compounds (VOC) is input into the atmospheric pollutant source analysis receptor model to analyze the pollution source composition of the primary emission of oxygenated volatile organic compounds (OVOC), and the concentration of each compound in each pollution source is obtained at the same time. Analysis of the secondary generation of oxygenated volatile organic compounds (OVOC). Based on the concentration of each compound in each pollution source, the net generation rate of each oxygenated volatile organic compound (OVOC) under the initial scenario is first simulated. Secondly, the concentration data of the compounds in each pollution source after quantitative reduction and the concentration data of the compounds in other unreduced emission sources are input into the atmospheric photochemical box model to simulate the net generation rate of oxygenated volatile organic compounds (OVOC) after quantitative reduction of different emission sources and use the relative incremental reaction activity coefficient method to achieve quantitative analysis of the secondary generation process of oxygenated volatile organic compounds (OVOC). Among them, the secondary generation source analysis method of oxygenated volatile organic compounds (OVOC) by coupling the box model with the PMF receptor model includes the following specific steps:

[0051] ① Use the PMF model to analyze the source of oxygen-containing volatile organic compounds (OVOC) precursors;

[0052] ② Combining the PMF source analysis results and model principles, the concentration of each precursor in each oxygen-containing volatile organic compound (OVOC) emission source is obtained;

[0053] ③ The concentration of each compound in the pollution source is added as the initial emission scenario and input into the box model to simulate the net generation rate of each oxygen-containing volatile organic compound (OVOC);

[0054] ④ Quantitatively reduce the concentration of different pollution sources and add the concentration data of unreduced pollution sources into the box model to simulate the net generation rate of each oxygen-containing volatile organic compound (OVOC);

[0055] ⑤ Characterize the sensitivity of oxygen-containing volatile organic compounds (OVOC) with relative incremental reactivity coefficient, calculate the sensitivity of different pollution sources to the generation of each oxygen-containing volatile organic compound (OVOC), and use the relative incremental reactivity coefficient method to analyze the secondary generation source of oxygen-containing volatile organic compounds (OVOC). The specific calculation formula is as follows:

[0056]

[0057] In the formula, is the average relative incremental reaction activity coefficient of pollution source X to the generation of oxygen-containing volatile organic compounds OVOC; RIR(X) is the relative incremental reaction activity coefficient of pollution source X to the generation of oxygen-containing volatile organic compounds OVOC in each sample; Net(OVOC) is the net generation rate of oxygen-containing volatile organic compounds OVOC under the initial scenario; n is the number of samples; Contribution(X) is the contribution of pollution source X to oxygen-containing volatile organic compounds OVOC.

[0058] Full-process analysis of oxygenated volatile organic compounds (OVOC). The contribution ratio of oxygenated volatile organic compounds (OVOC) is weighted and calculated by primary emission sources and secondary generation sources, ultimately achieving quantitative analysis of the sources of oxygenated volatile organic compounds (OVOC) in the entire process in the atmospheric environment.

[0059] based on Figure 1 The method for analyzing the sources of oxygen-containing volatile organic compounds in the atmospheric environment shown in the figure is based on the observation data of oxygen-containing volatile organic compounds OVOC and their precursors, and combines multiple models to analyze the primary emission and secondary generation of oxygen-containing volatile organic compounds OVOC, and finally realizes the quantitative source analysis of the whole process of oxygen-containing volatile organic compounds OVOC. It has established a new method and opened up new ideas for the analysis and chemical behavior of oxygen-containing volatile organic compounds OVOC in the environment. The method has important scientific significance and important practical application value; and has the following advantages:

[0060] 1. Based on the observation data, the present invention first calculates the initial concentration of the primary emission of oxygen-containing volatile organic compounds (OVOC), avoiding the influence of photochemical reactions and making the analysis results more accurate.

[0061] 2. For the secondary generation of oxygen-containing volatile organic compounds (OVOC), the present invention uses the atmospheric photochemical box model coupled with the atmospheric pollutant source analysis receptor model to determine the sensitive source of the actual generation of oxygen-containing volatile organic compounds (OVOC) and realizes the quantitative source analysis of the secondary generation process.

[0062] 3. A method combining multiple models was used to analyze the primary emission and secondary generation pollution sources of oxygen-containing volatile organic compounds (OVOCs), achieving quantitative source analysis of the entire process.

[0063] When applying the method for analyzing the source of oxygen-containing volatile organic compounds in the atmosphere provided in this manual, it is not necessary to Figure 1 The steps are executed in the order shown. The specific execution order of the steps can be determined according to needs, and this manual does not limit this.

[0064] Example 3

[0065] A system for analyzing the source of oxygen-containing volatile organic compounds (OVOC) in an atmospheric environment, comprising:

[0066] A data acquisition module, used to monitor pollutant concentration data and environmental condition data in the atmospheric environment, calculate the photolysis rate according to the pollutant concentration data and environmental condition data, and obtain photolysis parameters; wherein the pollutant concentration data includes OVOC concentration and VOC concentration;

[0067] The data analysis module is used to analyze and monitor OVOC using a multivariate linear regression model, analyze OVOC into primary emission sources, secondary generation sources, and background sources, and obtain the contribution ratios of the three sources to OVOC, and simultaneously obtain the initial concentrations of the primary emission part of OVOC and VOC; the initial concentration is input into the atmospheric pollutant source analysis receptor model to analyze the primary emission part of OVOC and VOC, and obtain the pollution sources of multiple primary emission parts of OVOC and the concentration of each compound in each pollution source;

[0068] A data simulation and analysis module is used to input the concentration of each compound in the pollution source, the quantitative reduction and summation of the concentration of each compound in the pollution source, and the concentration of each compound in the unreduced pollution source into the atmospheric photochemical box model to simulate the OVOC generation process, and obtain the net generation rate and the sensitivity of the pollution source to OVOC generation;

[0069] The quantitative analysis module is used to quantitatively analyze the secondary generation process of OVOC based on the net generation rate and the sensitivity of the pollution source to OVOC generation, and obtain the analysis results by adopting the relative incremental reaction activity coefficient method; based on the analysis results, the contribution ratio of the primary emission source and the secondary generation source to OVOC is weighted and calculated to obtain the quantitative analysis results of the whole process OVOC source in the atmospheric environment.

[0070] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A method for analyzing the source of OVOC in an atmospheric environment, characterized in that: The following steps are involved: Acquire pollutant concentration data and environmental condition data in the monitored atmospheric environment, calculate the photolysis rate according to the pollutant concentration data and environmental condition data, and obtain the photolysis parameters; The multivariate linear regression model is used to analyze and monitor OVOC, analyze OVOC into primary emission sources, secondary generation sources and background sources, and obtain the contribution ratio of the three sources to OVOC, and at the same time obtain the primary emission part of OVOC and the initial concentration of VOC; Inputting the initial concentration into the atmospheric pollutant source analysis receptor model to analyze the OVOC primary emission part and VOC, and obtaining the pollution sources of multiple OVOC primary emission parts and the concentration of each compound in each pollution source; The concentration of each compound in the pollution source is summed, the concentration of each compound in the pollution source is quantitatively reduced and added, and the concentration of each compound in the pollution source that has not been reduced is respectively input into the atmospheric photochemical box model to simulate the OVOC generation process, and the net generation rate and the sensitivity of the pollution source to OVOC generation are obtained; According to the net generation rate and the sensitivity of the pollution source to OVOC generation, the relative incremental reaction activity coefficient method was used to quantitatively analyze the secondary generation process of OVOC and obtain the analytical results. Based on the analysis results, the contribution ratios of primary emission sources and secondary generation sources to OVOC are weighted and calculated to obtain the quantitative analysis results of the full-process OVOC sources in the atmospheric environment.

2. The method for analyzing the source of OVOC in an atmospheric environment according to claim 1, characterized in that: The method comprises the following steps: adding the concentration of each compound in the pollution source, quantitatively reducing the concentration of each compound in the pollution source and adding the concentration of each compound in the pollution source that has not been reduced, and inputting them into the atmospheric photochemical box model to simulate the OVOC generation process. The concentration of each compound in the pollution source is summed up as the initial emission scenario and input into the atmospheric photochemical box model to simulate the net generation rate of each OVOC; The concentration of each compound in different pollution sources is quantitatively reduced and added, as well as the concentration of each compound in the unreduced pollution sources, and then input into the atmospheric photochemical box model to simulate the net generation rate of each OVOC.

3. The method for analyzing the source of OVOC in an atmospheric environment according to claim 1, characterized in that: The method of quantitatively analyzing the OVOC secondary generation process by using the relative incremental reaction activity coefficient method based on the net generation rate and the sensitivity of the pollution source to the generation of OVOC to obtain the analysis results includes the following steps: The relative incremental reactivity coefficient is used to characterize the sensitivity of OVOC, and the sensitivity of the pollution source to each type of OVOC generation is obtained respectively. The relative incremental reactivity coefficient method is used to analyze the source of OVOC secondary generation. The calculation formula is as follows: in, is the average relative incremental reaction activity coefficient of pollution source X to the generation of oxygen-containing volatile organic compounds OVOC; RIR(X) is the relative incremental reaction activity coefficient of pollution source X to the generation of oxygen-containing volatile organic compounds OVOC in each sample; Net(OVOC) is the net generation rate of oxygen-containing volatile organic compounds OVOC under the initial scenario; n is the number of samples; Contribution(X) is the contribution of pollution source X to the secondary generation of OVOC; con(X) is the concentration of pollution source X; m is the number of pollution sources.

4. A system for analyzing OVOC sources in an atmospheric environment, characterized in that: include: A data acquisition module, used to monitor pollutant concentration data and environmental condition data in the atmospheric environment, calculate the photolysis rate according to the pollutant concentration data and environmental condition data, and obtain photolysis parameters; wherein the pollutant concentration data includes OVOC concentration and VOC concentration; The data analysis module is used to analyze and monitor OVOC using a multivariate linear regression model, analyze OVOC into primary emission sources, secondary generation sources, and background sources, and obtain the contribution ratios of the three sources to OVOC, and simultaneously obtain the initial concentrations of the primary emission part of OVOC and VOC; the initial concentration is input into the atmospheric pollutant source analysis receptor model to analyze the primary emission part of OVOC and VOC, and obtain the pollution sources of multiple primary emission parts of OVOC and the concentration of each compound in each pollution source; A data simulation and analysis module is used to input the concentration of each compound in the pollution source, the quantitative reduction and summation of the concentration of each compound in the pollution source, and the concentration of each compound in the unreduced pollution source into the atmospheric photochemical box model to simulate the OVOC generation process, and obtain the net generation rate and the sensitivity of the pollution source to OVOC generation; The quantitative analysis module is used to quantitatively analyze the secondary generation process of OVOC based on the net generation rate and the sensitivity of the pollution source to OVOC generation, and obtain the analysis results by adopting the relative incremental reaction activity coefficient method; based on the analysis results, the contribution ratio of the primary emission source and the secondary generation source to OVOC is weighted and calculated to obtain the quantitative analysis results of the whole process OVOC source in the atmospheric environment.

5. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 3 is implemented.

6. A computer device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in any one of claims 1 to 3 is implemented.

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