CN117252077A - Atmospheric perfluorinated compound tracing method and system based on diffusion path information - Google Patents
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Abstract
The invention discloses an atmospheric perfluorinated compound tracing method and system based on diffusion path information, which relate to the technical field of atmospheric pollutant tracing, and firstly construct a perfluorinated compound three-dimensional spatial distribution model; historical meteorological data in a target area is collected, and perfluorinated compound diffusion path information is obtained through simulation; acquiring pollution source information on each diffusion path; acquiring time required by a pollution source to diffuse to a monitoring point on a diffusion path based on historical meteorological data, and further determining emission information of the atmospheric perfluorinated compounds of the pollution source at the time; simulating emission information of atmospheric perfluorinated compounds of pollution sources at the time by combining historical meteorological data to obtain contribution of the pollution sources to atmospheric perfluorinated pollutants of monitoring points, and further obtaining pollution contribution ratio of each pollution source to the monitoring points; and determining a key pollution source of the atmospheric perfluorinated pollutants at the monitoring point according to the pollution contribution ratio. The invention can rapidly, accurately and efficiently check the key pollution source and the pollution contribution ratio of the atmospheric perfluorinated compounds at the monitoring point.
Description
Technical Field
The invention relates to the technical field of atmospheric pollutant tracing, in particular to an atmospheric perfluorinated compound tracing method and system based on diffusion path information.
Background
Perfluoro compounds (perfluorinated compounds, PFCs) are a class of persistent organic contaminants synthesized by man and present in non-natural environments, which can be divided into two broad classes depending on the group: perfluoroalkyl carboxylates and perfluoroalkyl sulfonates. The synthetic compound is an artificial compound with special chemical properties, and is widely applied to production and life in terms of surface activity, thermal stability, acid resistance, water repellency and oleophobic property, such as non-stick pan coating (such as non-stick pan), textiles, pesticides, aviation, electroplating materials, household products, cosmetics, pesticides, fire extinguishing agents, waterproof and antifouling agents and the like. It has various toxicities such as reproduction toxicity, mutagenesis toxicity, development toxicity, neurotoxicity, immune toxicity and the like, and is an environmental pollutant with systemic multi-organ toxicity. The potential for bioagglomeration and human toxicity of perfluorinated compounds worldwide is becoming increasingly important to the environmental concerns of today's society due to their ubiquitous presence and environmental persistence and toxicity.
At present, the method for tracing the atmospheric perfluorinated compounds is usually manual field investigation, namely all pollution sources in the area near the monitoring point need to be checked, and whether the pollution sources of the discharged atmospheric perfluorinated pollutants are the sources of the atmospheric perfluorinated pollutants at the monitoring point cannot be accurately judged. The existing diffusion model (such as AERMOD) consumes a long time for tracing the diffusion of the pollutants, and it is difficult to accurately identify the information of the key pollution sources, the pollution contribution ratio and the like on the diffusion path.
Therefore, how to provide a method for rapidly, accurately and efficiently detecting the key pollution source and pollution contribution ratio of the atmospheric perfluorinated compounds at the monitoring point is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides an atmospheric perfluorinated compound tracing method and system based on diffusion path information.
In order to achieve the above object, the present invention provides the following technical solutions:
an atmospheric perfluorinated compound tracing method based on diffusion path information comprises the following steps:
step 1, collecting ground data, high altitude data and atmospheric perfluorinated compound distribution data in a target area, and constructing a perfluorinated compound three-dimensional spatial distribution model;
step 2, collecting historical meteorological data in a target area, and combining the perfluorinated compound three-dimensional spatial distribution model to simulate and obtain perfluorinated compound diffusion path information;
step 3, based on the perfluorinated compound diffusion path information, pollution source information on each diffusion path is obtained;
step 4, based on the historical meteorological data, combining the perfluorinated compound three-dimensional space distribution model to obtain the time required by the pollution source on the diffusion path to diffuse to the monitoring point;
step 5, determining emission information of the atmospheric perfluorinated compounds of the pollution source at the time based on the time required for the pollution source to diffuse to the monitoring point;
step 6, simulating emission information of the atmospheric perfluorinated compounds of the pollution source at the time by combining the historical meteorological data to obtain contribution of the pollution source to atmospheric perfluorinated pollutants of the monitoring point;
step 7, obtaining the pollution contribution ratio of each pollution source to the atmospheric perfluor pollutants at the monitoring point based on the contribution of each pollution source to the atmospheric perfluor pollutants at the monitoring point and the current atmospheric perfluor compound detection data of the pollution source;
and 8, determining a key pollution source of the atmospheric perfluorinated pollutants at the monitoring point according to the pollution contribution ratio.
Optionally, in the step 1, the target area is an area formed by taking a monitoring point as a center and taking a driving path of the historical average wind speed in unit time as a radius; the unit time is 1-7 days.
Optionally, in the step 1, the method for constructing the perfluoro compound stereoscopic space distribution model includes:
step 1.1, constructing a data set D1 by using the vertical column concentration of the perfluorinated compounds in the target area continuously obtained by the high-resolution satellite, the meteorological information obtained by the atmospheric and chemical modes and the geographic information of population, road network and land coverage types; constructing a data set L1 by using the perfluorocompound data obtained by MAX-DOAS horizontal remote sensing, unmanned aerial vehicle remote sensing and ground monitoring station in-situ monitoring; training a first neural network by taking a data set D1 as input data and a data set L1 as a label to obtain a model M1 of high-precision near-ground atmospheric perfluorinated compound data;
step 1.2, meteorological data obtained in an atmospheric chemical mode, troposphere atmospheric perfluorinated compound data obtained by satellite observation, MAX-DOAS background station vertical remote sensing observation results and high-precision near-ground atmospheric perfluorinated compound data are constructed into a data set D2; constructing a data set L2 by using the MAX-DOAS vertical remote sensing observation result after hierarchical standardization; training a second neural network by taking the data set D2 as input data and the data set L2 as a label to obtain a model M2 of the three-dimensional distribution result of the atmospheric perfluorinated compounds;
and 1.3, inputting meteorological data obtained in an atmospheric chemical mode corresponding to all space points in the area at the current moment, troposphere atmospheric perfluorinated compound data obtained by satellite observation, a MAX-DOAS background station vertical remote sensing observation result and high-precision near-ground atmospheric perfluorinated compound data into a model M2 to obtain a perfluorinated compound three-dimensional space distribution model in the area at the current moment.
Optionally, in the step 2, the historical meteorological data refer to temperature and humidity data, wind direction data, rainfall data and atmospheric pressure data in a historical unit time.
Optionally, in the step 3, the method for obtaining the pollution source information on each diffusion path based on the diffusion path information of the perfluorinated compound includes:
acquiring all pollution sources on a perfluorinated compound diffusion path according to perfluorinated compound diffusion path information;
collecting the emission history of the pollution source, judging whether the emission history of the pollution source contains atmospheric perfluorinated compounds, and screening;
and the pollution source obtained by screening is the pollution source information on the diffusion path.
Optionally, in the step 5, the method for detecting emission information of the atmospheric perfluorinated compounds as the pollution source includes:
a plurality of supervision points are arranged outside the pollution source in the downwind direction of the pollution source at a preset distance from the boundary of the pollution source;
and (5) sampling and detecting the concentration of the atmospheric perfluorinated compounds by adopting an ambient air particulate matter comprehensive sampler.
An atmospheric perfluorocompound traceability system based on diffusion path information, comprising:
the perfluorinated compound three-dimensional space distribution model construction module is used for acquiring ground data, high-altitude data and atmospheric perfluorinated compound distribution data in a target area and constructing a perfluorinated compound three-dimensional space distribution model;
the diffusion path information acquisition module is used for acquiring historical meteorological data in a target area and combining the perfluorinated compound three-dimensional spatial distribution model to simulate and obtain perfluorinated compound diffusion path information;
the pollution source determining module is used for acquiring pollution source information on each diffusion path based on the perfluorinated compound diffusion path information;
the diffusion time acquisition module is used for acquiring the time required by the pollution source on the diffusion path to diffuse to the monitoring point based on the historical meteorological data and in combination with the perfluorinated compound three-dimensional space distribution model;
the pollution source emission information acquisition module is used for determining emission information of the atmospheric perfluorinated compounds of the pollution source at the time based on the time required by the pollution source to diffuse to the monitoring point;
the pollution source contribution amount simulation module is used for simulating the emission information of the atmospheric perfluorinated compounds of the pollution source at the time by combining the historical meteorological data to obtain the contribution amount of the pollution source to the atmospheric perfluorinated pollutants of the monitoring point;
the pollution contribution ratio calculation module is used for obtaining the pollution contribution ratio of each pollution source to the atmospheric perfluorinated pollutants at the monitoring point based on the contribution amount of each pollution source to the atmospheric perfluorinated pollutants at the monitoring point and the current atmospheric perfluorinated compound detection data of the pollution source;
and the key pollution source determining module is used for determining the key pollution source of the atmospheric perfluorinated pollutants at the monitoring point according to the pollution contribution ratio.
According to the technical scheme, the invention discloses an atmospheric perfluorinated compound tracing method and system based on diffusion path information, and compared with the prior art, the atmospheric perfluorinated compound tracing method and system have the following beneficial effects:
according to the invention, based on satellite observation data, meteorological data and other information, the perfluorinated compound stereoscopic space distribution model in the target area is obtained, the perfluorinated compound diffusion path information is obtained through simulation by the model, and the simulation result is more accurate. On the basis, the emission information of the atmospheric perfluorinated compounds of the pollution sources on the diffusion path at the time is obtained by a time reverse pushing principle, and then the key pollution sources and the pollution contribution ratio of the atmospheric perfluorinated compounds of the monitoring points are obtained by calculation. The invention can rapidly, accurately and efficiently check the key pollution source and pollution contribution ratio of the atmospheric perfluorinated compounds at the monitoring point, and provides scientific basis for preventing and controlling the pollution of the atmospheric perfluorinated compounds.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the method of the present invention;
FIG. 2 is a schematic diagram of a system module according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses an atmospheric perfluorinated compound tracing method based on diffusion path information, which is shown in fig. 1 and comprises the following steps:
step 1, collecting information such as ground data, high altitude data, atmospheric perfluorinated compound distribution data and the like in a target area, and constructing a perfluorinated compound three-dimensional spatial distribution model, wherein the method specifically comprises the following steps of:
step 1.1, constructing a data set D1 by using the vertical column concentration of the perfluorinated compounds in the target area continuously obtained by the high-resolution satellite, the meteorological information obtained by the atmospheric and chemical modes and the geographic information of population, road network and land coverage types; constructing a data set L1 by using the perfluorocompound data obtained by MAX-DOAS horizontal remote sensing, unmanned aerial vehicle remote sensing and ground monitoring station in-situ monitoring; training a first neural network by taking a data set D1 as input data and a data set L1 as a label to obtain a model M1 of high-precision near-ground atmospheric perfluorinated compound data;
step 1.2, meteorological data obtained in an atmospheric chemical mode, troposphere atmospheric perfluorinated compound data obtained by satellite observation, MAX-DOAS background station vertical remote sensing observation results and high-precision near-ground atmospheric perfluorinated compound data are constructed into a data set D2; constructing a data set L2 by using the MAX-DOAS vertical remote sensing observation result after hierarchical standardization; training a second neural network by taking the data set D2 as input data and the data set L2 as a label to obtain a model M2 of the three-dimensional distribution result of the atmospheric perfluorinated compounds;
and 1.3, inputting meteorological data obtained in an atmospheric chemical mode corresponding to all space points in the area at the current moment, troposphere atmospheric perfluorinated compound data obtained by satellite observation, a MAX-DOAS background station vertical remote sensing observation result and high-precision near-ground atmospheric perfluorinated compound data into a model M2 to obtain a perfluorinated compound three-dimensional space distribution model in the area at the current moment.
In the specific implementation process, a triple four-stage liquid chromatography tandem mass spectrometer can be also selected to detect perfluorinated compounds in 17 kinds of atmospheric particulates. In the step 1, the target area is an area formed by taking a monitoring point as a center and taking a running path of the historical average wind speed in unit time as a radius; the unit time can be selected to be 1-7 days. The meteorological data obtained in the atmospheric gasification mode comprise temperature and humidity information, wind power and wind direction data, rainfall data and the like.
Step 2, collecting historical meteorological data in a target area, and combining the perfluorinated compound three-dimensional spatial distribution model to simulate and obtain perfluorinated compound diffusion path information; the historical meteorological data refer to temperature and humidity data, wind power and wind direction data, rainfall data and atmospheric pressure data in a historical unit time. The historical unit time can be selected to be 1-7 days.
Step 3, based on the perfluoro compound diffusion path information, pollution source information on each diffusion path is acquired, and the specific method is as follows:
acquiring all pollution sources on a perfluorinated compound diffusion path according to perfluorinated compound diffusion path information;
and collecting the emission history of the pollution source, judging whether the emission history of the pollution source contains the atmospheric perfluorinated compounds, and screening the pollution source containing the atmospheric perfluorinated compounds in the emission, wherein the screened pollution source is pollution source information on a diffusion path.
And 4, simulating and obtaining the time required by the pollution source on the diffusion path to diffuse to the monitoring point based on the historical meteorological data and combining the perfluorinated compound three-dimensional spatial distribution model.
And 5, determining emission information of the atmospheric perfluorinated compounds of the pollution source at the time based on the time required for the pollution source to diffuse to the monitoring point.
The method for detecting the emission information of the atmospheric perfluorinated compounds of the pollution source comprises the following steps:
a plurality of supervision points are arranged outside the pollution source in the downwind direction of the pollution source at a preset distance from the boundary of the pollution source;
and (5) sampling and detecting the concentration of the atmospheric perfluorinated compounds by adopting an ambient air particulate matter comprehensive sampler.
Step 6, simulating emission information of the atmospheric perfluorinated compounds of the pollution source at the time by combining the historical meteorological data to obtain contribution of the pollution source to atmospheric perfluorinated pollutants of the monitoring point;
step 7, obtaining the pollution contribution ratio of each pollution source to the atmospheric perfluor pollutants at the monitoring point based on the contribution of each pollution source to the atmospheric perfluor pollutants at the monitoring point and the current atmospheric perfluor compound detection data of the pollution source;
and 8, determining a key pollution source of the atmospheric perfluorinated pollutants at the monitoring point according to the pollution contribution ratio. In the specific implementation process, the first 3 pollution sources of the pollution contribution ratio can be selected as key pollution sources of the atmospheric perfluorinated pollutants at the monitoring points.
Another embodiment of the present invention further discloses an atmospheric perfluorinated compound traceability system based on diffusion path information, referring to fig. 2, including:
the perfluorinated compound three-dimensional space distribution model construction module is used for acquiring ground data, high-altitude data and atmospheric perfluorinated compound distribution data in a target area and constructing a perfluorinated compound three-dimensional space distribution model;
the diffusion path information acquisition module is used for acquiring historical meteorological data in a target area and combining the perfluorinated compound three-dimensional spatial distribution model to simulate and obtain perfluorinated compound diffusion path information;
the pollution source determining module is used for acquiring pollution source information on each diffusion path based on the perfluorinated compound diffusion path information;
the diffusion time acquisition module is used for acquiring the time required by the pollution source on the diffusion path to diffuse to the monitoring point based on the historical meteorological data and in combination with the perfluorinated compound three-dimensional space distribution model;
the pollution source emission information acquisition module is used for determining emission information of the atmospheric perfluorinated compounds of the pollution source at the time based on the time required by the pollution source to diffuse to the monitoring point;
the pollution source contribution amount simulation module is used for simulating the emission information of the atmospheric perfluorinated compounds of the pollution source at the time by combining the historical meteorological data to obtain the contribution amount of the pollution source to the atmospheric perfluorinated pollutants of the monitoring point;
the pollution contribution ratio calculation module is used for obtaining the pollution contribution ratio of each pollution source to the atmospheric perfluorinated pollutants at the monitoring point based on the contribution amount of each pollution source to the atmospheric perfluorinated pollutants at the monitoring point and the current atmospheric perfluorinated compound detection data of the pollution source;
and the key pollution source determining module is used for determining the key pollution source of the atmospheric perfluorinated pollutants at the monitoring point according to the pollution contribution ratio.
For the system module disclosed in the embodiment, since the system module corresponds to the method disclosed in the embodiment, the description is simpler, and the relevant points refer to the description of the method section.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The atmospheric perfluorinated compound tracing method based on diffusion path information is characterized by comprising the following steps of:
step 1, collecting ground data, high altitude data and atmospheric perfluorinated compound distribution data in a target area, and constructing a perfluorinated compound three-dimensional spatial distribution model;
step 2, collecting historical meteorological data in a target area, and combining the perfluorinated compound three-dimensional spatial distribution model to simulate and obtain perfluorinated compound diffusion path information;
step 3, based on the perfluorinated compound diffusion path information, pollution source information on each diffusion path is obtained;
step 4, based on the historical meteorological data, combining the perfluorinated compound three-dimensional space distribution model to obtain the time required by the pollution source on the diffusion path to diffuse to the monitoring point;
step 5, determining emission information of the atmospheric perfluorinated compounds of the pollution source at the time based on the time required for the pollution source to diffuse to the monitoring point;
step 6, simulating emission information of the atmospheric perfluorinated compounds of the pollution source at the time by combining the historical meteorological data to obtain contribution of the pollution source to atmospheric perfluorinated pollutants of the monitoring point;
step 7, obtaining the pollution contribution ratio of each pollution source to the atmospheric perfluor pollutants at the monitoring point based on the contribution of each pollution source to the atmospheric perfluor pollutants at the monitoring point and the current atmospheric perfluor compound detection data of the pollution source;
and 8, determining a key pollution source of the atmospheric perfluorinated pollutants at the monitoring point according to the pollution contribution ratio.
2. The method for tracing atmospheric perfluorinated compounds based on diffusion path information according to claim 1, wherein in the step 1, the target area is an area formed by taking a travel path of a historical average wind speed in unit time as a radius with a monitoring point as a center; the unit time is 1-7 days.
3. The method for tracing an atmospheric perfluorinated compound based on diffusion path information according to claim 1, wherein in the step 1, the method for constructing a perfluorinated compound stereoscopic space distribution model is as follows:
step 1.1, constructing a data set D1 by using the vertical column concentration of the perfluorinated compounds in the target area continuously obtained by the high-resolution satellite, the meteorological information obtained by the atmospheric and chemical modes and the geographic information of population, road network and land coverage types; constructing a data set L1 by using the perfluorocompound data obtained by MAX-DOAS horizontal remote sensing, unmanned aerial vehicle remote sensing and ground monitoring station in-situ monitoring; training a first neural network by taking a data set D1 as input data and a data set L1 as a label to obtain a model M1 of high-precision near-ground atmospheric perfluorinated compound data;
step 1.2, meteorological data obtained in an atmospheric chemical mode, troposphere atmospheric perfluorinated compound data obtained by satellite observation, MAX-DOAS background station vertical remote sensing observation results and high-precision near-ground atmospheric perfluorinated compound data are constructed into a data set D2; constructing a data set L2 by using the MAX-DOAS vertical remote sensing observation result after hierarchical standardization; training a second neural network by taking the data set D2 as input data and the data set L2 as a label to obtain a model M2 of the three-dimensional distribution result of the atmospheric perfluorinated compounds;
and 1.3, inputting meteorological data obtained in an atmospheric chemical mode corresponding to all space points in the area at the current moment, troposphere atmospheric perfluorinated compound data obtained by satellite observation, a MAX-DOAS background station vertical remote sensing observation result and high-precision near-ground atmospheric perfluorinated compound data into a model M2 to obtain a perfluorinated compound three-dimensional space distribution model in the area at the current moment.
4. The method for tracing atmospheric perfluorinated compounds based on diffusion path information according to claim 1, wherein in the step 2, historical meteorological data refer to temperature and humidity data, wind direction data, rainfall data and atmospheric pressure data in a historical unit time.
5. The method for tracing an atmospheric perfluorinated compound according to claim 1, wherein in the step 3, the method for acquiring pollution source information on each diffusion path based on the perfluorinated compound diffusion path information is as follows:
acquiring all pollution sources on a perfluorinated compound diffusion path according to perfluorinated compound diffusion path information;
collecting the emission history of the pollution source, judging whether the emission history of the pollution source contains atmospheric perfluorinated compounds, and screening;
and the pollution source obtained by screening is the pollution source information on the diffusion path.
6. The method for tracing atmospheric perfluorinated compounds based on diffusion path information according to claim 1, wherein in the step 5, the method for detecting emission information of atmospheric perfluorinated compounds as pollution sources comprises the following steps:
a plurality of supervision points are arranged outside the pollution source in the downwind direction of the pollution source at a preset distance from the boundary of the pollution source;
and (5) sampling and detecting the concentration of the atmospheric perfluorinated compounds by adopting an ambient air particulate matter comprehensive sampler.
7. An atmospheric perfluorinated compound traceability system based on diffusion path information, comprising:
the perfluorinated compound three-dimensional space distribution model construction module is used for acquiring ground data, high-altitude data and atmospheric perfluorinated compound distribution data in a target area and constructing a perfluorinated compound three-dimensional space distribution model;
the diffusion path information acquisition module is used for acquiring historical meteorological data in a target area and combining the perfluorinated compound three-dimensional spatial distribution model to simulate and obtain perfluorinated compound diffusion path information;
the pollution source determining module is used for acquiring pollution source information on each diffusion path based on the perfluorinated compound diffusion path information;
the diffusion time acquisition module is used for acquiring the time required by the pollution source on the diffusion path to diffuse to the monitoring point based on the historical meteorological data and in combination with the perfluorinated compound three-dimensional space distribution model;
the pollution source emission information acquisition module is used for determining emission information of the atmospheric perfluorinated compounds of the pollution source at the time based on the time required by the pollution source to diffuse to the monitoring point;
the pollution source contribution amount simulation module is used for simulating the emission information of the atmospheric perfluorinated compounds of the pollution source at the time by combining the historical meteorological data to obtain the contribution amount of the pollution source to the atmospheric perfluorinated pollutants of the monitoring point;
the pollution contribution ratio calculation module is used for obtaining the pollution contribution ratio of each pollution source to the atmospheric perfluorinated pollutants at the monitoring point based on the contribution amount of each pollution source to the atmospheric perfluorinated pollutants at the monitoring point and the current atmospheric perfluorinated compound detection data of the pollution source;
and the key pollution source determining module is used for determining the key pollution source of the atmospheric perfluorinated pollutants at the monitoring point according to the pollution contribution ratio.
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