CN112730667A - Online volatile organic compound navigation monitoring system and analysis method - Google Patents
Online volatile organic compound navigation monitoring system and analysis method Download PDFInfo
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- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
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- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N30/02—Column chromatography
- G01N30/86—Signal analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N2030/062—Preparation extracting sample from raw material
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Abstract
The invention discloses an online volatile organic compound navigation monitoring system and an analysis method, wherein the online volatile organic compound navigation monitoring system comprises a navigation vehicle, wherein an industrial personal computer, a sampling module, a detection module, a data acquisition module, a display module, a data analysis module, an equipment control module, a storage module, a transmission module and a GIS module are arranged in the navigation vehicle, and the sampling module, the detection module, the data acquisition module, the display module, the data analysis module, the equipment control module, the storage module, the transmission module and the GIS module are electrically connected with the: the sampling module comprises a sampling pipe, a sampler and a nitrogen bottle, wherein the sampling pipe is connected with the sampler, and the nitrogen bottle is connected with the sampling pipe and the sampler; the detection module comprises an extractor, a concentrator and a gas chromatography-mass spectrometer, the extractor is connected with the concentrator, the concentrator is connected with the gas chromatography-mass spectrometer, the gas chromatography-mass spectrometer is electrically connected with an industrial personal computer, and the sampler is connected with the extractor. The invention keeps low-temperature sampling and real-time quantitative online detection, recommends pollution images in the area through regional navigation, and is convenient for pollution tracing, peculiar smell tracing, accurate striking and fine management.
Description
Technical Field
The invention relates to the technical field of air quality monitoring, in particular to an online volatile organic compound navigation monitoring system and an online volatile organic compound navigation monitoring analysis method.
Background
Volatile Organic Compounds (VOC), which is a harmful class of VOC, the main components of VOC are: hydrocarbons, halogenated hydrocarbons, oxygen hydrocarbons and nitrogen hydrocarbons, which include: benzene series, organic chloride, freon series, organic ketone, amine, alcohol, ether, ester, acid, petroleum hydrocarbon compound and the like have great influence on human health. When the VOC reaches a certain concentration, people can feel headache, nausea, vomit, hypodynamia and the like in a short time, and can be convulsion and coma in severe cases, the liver, the kidney, the brain and the nervous system of people can be injured, and serious consequences such as hypomnesis can be caused, and the VOC is mainly generated outdoors from fuel combustion and transportation.
Therefore, the monitoring of volatile organic compounds is indispensable, and traditional VOC monitoring process is after sampling through low temperature storage, transportation, and after complicated preprocessing processes such as solid phase extraction, solvent analysis, low temperature preconcentration, get into the chromatograph and detect, later form the detection analysis report, the loaded down with trivial details sample of flow easily loses, and then influences the detection precision, through can't realizing real-time on-line monitoring, can't accurately judge the pollution degree distribution in each region.
Disclosure of Invention
In order to solve the problems, the invention provides an online volatile organic compound navigation monitoring system and an online volatile organic compound navigation monitoring analysis method, which have the advantages of real-time and rapid detection, second-level response, abundant detected species and low system power consumption, can acquire concentration distribution and change rules of different species in real time, rapidly and deeply understand the distribution situation of regional pollutants, trace the source of the pollutants in real time, accurately judge the polluted region and provide technical support for implementing fine management of air VOCs pollution.
The technical scheme adopted by the invention is as follows:
the application provides an online volatile organic compounds monitoring system that walks to navigate, including the car of navigating, be equipped with sampling module, detection module, data acquisition module, display module, data analysis module, equipment control module, storage module, transmission module and GIS module of industrial computer, electric connection industrial computer in the car of navigating, wherein:
the sampling module comprises a sampling pipe, a sampler and a nitrogen bottle, wherein the sampling pipe is connected with the sampler, and the nitrogen bottle is connected with the sampling pipe and the sampler;
the detection module comprises an extractor, a concentrator and a gas chromatography-mass spectrometer, the extractor is connected with the concentrator, the concentrator is connected with the gas chromatography-mass spectrometer, the gas chromatography-mass spectrometer is electrically connected with an industrial personal computer, the sampler is connected with the extractor, and the nitrogen cylinder is also connected with the extractor, the concentrator and the gas chromatography-mass spectrometer;
the data analysis module comprises a source tracing unit and a report unit, and the data analysis unit is connected with the GIS module;
the storage module comprises a GIS geographic database, a meteorological database, a monitoring database and a composition correction database, and the GIS geographic database is connected with the GIS module;
the data acquisition module comprises a six-parameter gas instrument and a five-parameter meteorological station, wherein the five-parameter meteorological station is connected with a meteorological database, and the six-parameter gas instrument is connected into a partial correction database.
Preferably, the equipment control module is electrically connected with the navigation vehicle and the detection module, and is also electrically connected with the fault judgment unit, and the equipment control module is used for starting or closing instruments, vacuum pressure display, electric parameter reading and control, fault judgment and fault information query in the detection module.
Preferably, the industrial personal computer is further provided with an open port, the transmission module comprises a wireless transmission unit, a wired transmission unit and a cloud platform, and the open port is connected with the secondary development server through the wireless transmission unit or the cloud platform.
Preferentially, geographic data and three-dimensional map data are arranged in the GIS geographic database, point location historical monitoring data, pollution source online monitoring data, environment VOCs online data, pollution emission information statistical data and pollution source distribution data are arranged in the monitoring database, and component standard curves and correction coefficient data are arranged in the component correction database.
Based on the online volatile organic compound navigation monitoring system, the application also provides an analysis method using the online volatile organic compound navigation monitoring system, which comprises the following steps:
s1, correcting and resetting instrument equipment connected with a sampling module, a detection module, a data acquisition module and a data analysis module through an equipment control module;
s2, enabling the volatile organic compound sample collected by the sampling module to enter a gas chromatography-mass spectrometer for on-line monitoring, and leading a formed mass spectrogram or MIC (many integrated core) diagram into a data analysis module;
s3, automatically analyzing the mass spectrogram or the MIC image in the step S2 by using a data analysis module, and giving a list of the volatile organic compounds qualitatively identified in the mass spectrogram or the MIC image and corresponding concentrations thereof;
s4, in the moving process of the navigation vehicle, repeating the step S2 and the step S3 until the navigation is finished, continuously performing online real-time quantitative statistical analysis on the volatile organic compounds by using a data analysis module, and acquiring two-dimensional curve data of the concentration of various components in the volatile organic compounds along with the change of time and two-dimensional data or three-dimensional data of the concentration of various components along with the change of geographic positions;
and S5, after the navigation is finished, the data analysis module establishes a pollution portrait, analyzes and obtains concentration distribution, species composition, over-standard species, malodorous substances, abnormal data, characteristic difference, region or enterprise ranking, space-time distribution and evolution law of volatile organic matters, and is used for pollution tracing, peculiar smell tracing, accurate striking and fine management.
Preferably, in step S1, during the calibration, reset and normal operation of the instrument connected to the sampling module, the detection module, the data acquisition module and the data analysis module, the device control module monitors the working state of the instrument in real time, determines the working state of the instrument according to the temperature, the high voltage and the parameters of the core device, and sends an alarm signal and turns off the power supply of the instrument when an abnormality occurs.
Preferably, in step S2, the nitrogen bottle keeps the sampling tube, the sampler, the extractor, the concentrator, and the gc-ms in a low temperature state, the volatile organic compound enters the sampler through the sampling tube to form a sample, the sample is subjected to solid phase extraction and solvent analysis by the extractor, then the sample enters the concentrator and is subjected to low temperature pre-concentration, the sample enters the gc-ms after concentration to perform real-time quantitative detection, and the detection result is derived in the form of a mass spectrogram or an MIC map.
Preferably, in step S3, the mass spectrogram or MIC map is imported into the data analysis module through an industrial personal computer, before analyzing the mass spectrogram or MIC map, the data analysis module automatically labels the corresponding mass-to-charge ratio and intensity of the mass spectrogram peak in the mass spectrogram or MIC map, and in the mass spectrogram or MIC map analysis process, when the concentration of the component analyzed by the qualitative analysis exceeds a threshold, the concentration value is used for correcting the quantitative curve of the instrument, and meanwhile, the data of the daily operation, maintenance and quality control of the instrument is recorded and stored in the monitoring database.
The invention has the beneficial effects that:
1. in the sampling process and the detection process, a nitrogen cylinder is adopted to keep a low-temperature state, so that the low-temperature pretreatment and the real-time detection of the volatile organic compound sample are facilitated;
2. after the real-time detection result is subjected to statistical analysis, a pollution portrait is established, the concentration, the type, the source, the spatial distribution and the emission rule of pollutants are visually displayed, and the pollution tracing, the peculiar smell tracing, the accurate striking and the fine management are facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of an industrial personal computer connection of the present invention.
Labeled as: 1. the system comprises a navigation vehicle, a 2 industrial personal computer, a 21 sampling module, a 211 sampling pipe, a 212 sampler, a 213 nitrogen bottle, a 22 detection module, a 221 extractor, a 222 concentrator, a 223 gas chromatography-mass spectrometer, a 23 data acquisition module, a 231 gas six-parameter instrument, a 232 five-parameter meteorological station, a 24 display module, a 25 transmission module, a 26 data analysis module, a 261 traceability unit, a 262 report unit, a 27 equipment control module, a 271 fault judgment unit, a 28 storage module, a 281 GIS geographic database, a 282 meteorological database, a 283 monitoring database, a 284 ingredient correction database and a 29 GIS module.
Detailed Description
As shown in fig. 1, the application provides an online volatile organic compound monitoring system that walks to navigate, including walking car 1, be equipped with industrial computer 2, electric connection industrial computer 2's sampling module 21, detection module 22, data acquisition module 23, display module 24, data analysis module 26, equipment control module 27, storage module 28, transmission module 25 and GIS module 29 in the walking car 1, wherein:
the sampling module 21 comprises a sampling pipe 21, a sampler 212 and a nitrogen bottle 213, wherein the sampling pipe 21 is connected with the sampler 212, and the nitrogen bottle 213 is connected with the sampling pipe 21 and the sampler 212;
the detection module 22 comprises an extractor 221, a concentrator 222 and a gas chromatography-mass spectrometer 223, wherein the extractor 221 is connected with the concentrator 222, the concentrator 222 is connected with the gas chromatography-mass spectrometer 223, the gas chromatography-mass spectrometer 223 is electrically connected with the industrial personal computer 2, the sampler 212 is connected with the extractor 221, and the nitrogen cylinder 213 is also connected with the extractor 221, the concentrator 222 and the gas chromatography-mass spectrometer 223;
the data analysis module 26 comprises a source tracing unit 261 and a report unit 262, and the data analysis unit is connected with the GIS module 29;
the storage module 28 comprises a GIS geographic database 281, a meteorological database 282, a monitoring database 283 and a composition correction database, and the GIS geographic database 281 is connected with the GIS module 29;
the data acquisition module 23 comprises a six-parameter gas meter 231 and a five-parameter meteorological station 232, wherein the five-parameter meteorological station 232 is connected with a meteorological data path 282, and the six-parameter gas meter 231 is connected with a partial correction database.
As shown in fig. 1, the equipment control module 27 is electrically connected to the carriage 1 and the detection module 22, the equipment control module 27 is further electrically connected to a fault determination unit 271, and the equipment control module 27 is configured to start or stop an instrument, display vacuum pressure, read and control electrical parameters, determine a fault, and query fault information in the detection module 22.
As shown in fig. 1, the industrial personal computer 2 is further provided with an open port, the transmission module 25 includes a wireless transmission unit, a wired transmission unit and a cloud platform, and the open port is connected with a secondary development server through the wireless transmission unit or the cloud platform.
As shown in fig. 1, the GIS geographic database 281 is provided with geographic data and three-dimensional map data, the monitoring database 283 is provided with point location history monitoring data, pollution source online monitoring data, environmental VOCs online data, pollution emission information statistical data and pollution source distribution data, and the composition correction database is provided with composition standard curves and correction coefficient data.
Based on the online volatile organic compound navigation monitoring system, the application also provides an analysis method using the online volatile organic compound navigation monitoring system, which comprises the following steps:
s1, correcting and resetting the instrument equipment connected with a sampling module 21, a detection module 22, a data acquisition module 23 and a data analysis module 26 through an equipment control module 27, wherein the equipment control module 27 monitors the working state of the instrument in real time in the correction, resetting and normal operation processes of the instrument equipment connected with the sampling module 21, the detection module 22, the data acquisition module 23 and the data analysis module 26, judges the working state of the instrument through temperature, high voltage and core device parameters, and sends an alarm signal and cuts off the power supply of the instrument when abnormality occurs;
s2, the nitrogen bottle 213 keeps a low-temperature state for the sampling pipe 21, the sampler 212, the extractor 221, the concentrator 222 and the gas chromatography-mass spectrometer 223, volatile organic compounds enter the sampler 212 through the sampling pipe 21 to form a sample, the sample is subjected to solid phase extraction and solvent analysis through the extractor 221, then the sample enters the concentrator 222 to be subjected to low-temperature pre-concentration, the concentrated sample enters the gas chromatography-mass spectrometer 223 to be subjected to real-time quantitative detection, and a detection result is led into the data analysis module 26 in the form of a mass spectrogram or an MIC (many integrated core) diagram;
s3, importing the mass spectrogram or MIC diagram into the data analysis module 26 through the industrial personal computer 2, automatically labeling the corresponding mass-to-charge ratio and intensity of mass spectral peaks in the mass spectrogram or MIC diagram by the data analysis module 26 before analyzing the mass spectrogram or MIC diagram, automatically analyzing the mass spectrogram or MIC diagram in the step S2 by the data analysis module 26, giving a volatile organic compound ingredient list qualitatively obtained in the mass spectrogram or MIC diagram and corresponding concentration thereof, and in the mass spectrogram or MIC diagram analysis process, when the concentration of the components quantitatively analyzed exceeds a threshold value, using the concentration value for correcting a quantitative curve of the instrument, and simultaneously recording daily operation, maintenance and quality control data of the instrument and then storing the data in the monitoring database 283;
s4, in the moving process of the navigation vehicle 1, repeating the step S2 and the step S3 until the navigation is finished, continuously performing online real-time quantitative statistical analysis on the volatile organic compounds by the data analysis module 26, and acquiring two-dimensional curve data of the concentration of various components in the volatile organic compounds along with the change of time and two-dimensional data or three-dimensional data of the concentration of various components along with the change of geographic positions;
and S5, after the navigation is finished, the data analysis module 26 establishes a pollution portrait, analyzes concentration distribution, species composition, over-standard species, malodorous substances, abnormal data, characteristic difference, region or enterprise ranking, space-time distribution and evolution rules of volatile organic matters, and is used for pollution tracing, peculiar smell tracing, accurate striking and fine management, the pollution portrait can be displayed in real time through a display module 24 in a multi-component same window, or a navigation report is formed through a report unit 262, and can be exported to be an editable text.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an online volatile organic compounds monitoring system that walks to navigate, includes the car of navigating, its characterized in that: be equipped with sampling module, detection module, data acquisition module, display module, data analysis module, equipment control module, storage module, transmission module and the GIS module of industrial computer, electric connection industrial computer in the car of sailing, wherein:
the sampling module comprises a sampling pipe, a sampler and a nitrogen bottle, wherein the sampling pipe is connected with the sampler, and the nitrogen bottle is connected with the sampling pipe and the sampler;
the detection module comprises an extractor, a concentrator and a gas chromatography-mass spectrometer, the extractor is connected with the concentrator, the concentrator is connected with the gas chromatography-mass spectrometer, the gas chromatography-mass spectrometer is electrically connected with an industrial personal computer, the sampler is connected with the extractor, and the nitrogen cylinder is also connected with the extractor, the concentrator and the gas chromatography-mass spectrometer;
the data analysis module comprises a source tracing unit and a report unit, and the data analysis unit is connected with the GIS module;
the storage module comprises a GIS geographic database, a meteorological database, a monitoring database and a composition correction database, and the GIS geographic database is connected with the GIS module;
the data acquisition module comprises a six-parameter gas instrument and a five-parameter meteorological station, wherein the five-parameter meteorological station is connected with a meteorological database, and the six-parameter gas instrument is connected into a partial correction database.
2. The online volatile organic compound (voc) navigation monitoring system of claim 1, wherein: the equipment control module is electrically connected with the navigation vehicle and the detection module, is also electrically connected with the fault judgment unit, and is used for starting or closing instruments in the detection module, displaying vacuum pressure, reading and controlling electrical parameters, judging faults and inquiring fault information.
3. The online volatile organic compound (voc) navigation monitoring system of claim 1, wherein: the industrial personal computer is further provided with an open port, the transmission module comprises a wireless transmission unit, a wired transmission unit and a cloud platform, and the open port is connected with a secondary development server through the wireless transmission unit or the cloud platform.
4. The online volatile organic compound (voc) navigation monitoring system of claim 1, wherein: geographic data and three-dimensional map data are arranged in a GIS geographic database, point location historical monitoring data, pollution source online monitoring data, environment VOCs online data, pollution emission information statistical data and pollution source distribution data are arranged in a monitoring database, and component standard curves and correction coefficient data are arranged in a component correction database.
5. An analysis method using the on-line volatile organic compound navigation monitoring system according to claims 1-4, characterized in that: the method comprises the following steps:
s1, correcting and resetting instrument equipment connected with a sampling module, a detection module, a data acquisition module and a data analysis module through an equipment control module;
s2, enabling the volatile organic compound sample collected by the sampling module to enter a gas chromatography-mass spectrometer for on-line monitoring, and leading a formed mass spectrogram or MIC (many integrated core) diagram into a data analysis module;
s3, automatically analyzing the mass spectrogram or the MIC image in the step S2 by using a data analysis module, and giving a list of the volatile organic compounds qualitatively identified in the mass spectrogram or the MIC image and corresponding concentrations thereof;
s4, in the moving process of the navigation vehicle, repeating the step S2 and the step S3 until the navigation is finished, continuously performing online real-time quantitative statistical analysis on the volatile organic compounds by using a data analysis module, and acquiring two-dimensional curve data of the concentration of various components in the volatile organic compounds along with the change of time and two-dimensional data or three-dimensional data of the concentration of various components along with the change of geographic positions;
and S5, after the navigation is finished, the data analysis module establishes a pollution portrait, analyzes and obtains concentration distribution, species composition, over-standard species, malodorous substances, abnormal data, characteristic difference, region or enterprise ranking, space-time distribution and evolution law of volatile organic matters, and is used for pollution tracing, peculiar smell tracing, accurate striking and fine management.
6. The method for analyzing an online Volatile Organic Compound (VOC) navigation monitoring system according to claim 5, wherein the method comprises the following steps: in step S1, during the calibration, reset and normal operation of the instrument connected to the sampling module, the detection module, the data acquisition module and the data analysis module, the device control module monitors the working state of the instrument in real time, determines the working state of the instrument according to the temperature, the high voltage and the parameters of the core device, and sends an alarm signal and cuts off the power supply of the instrument when an abnormality occurs.
7. The method for analyzing an online Volatile Organic Compound (VOC) navigation monitoring system according to claim 5, wherein the method comprises the following steps: in step S2, a nitrogen bottle keeps a low-temperature state for a sampling pipe, a sampler, an extractor, a concentrator and a gas chromatography-mass spectrometer, volatile organic compounds enter the sampler through the sampling pipe to form a sample, the sample is subjected to solid phase extraction and solvent analysis by the extractor, then the sample enters the concentrator and is subjected to low-temperature preconcentration, the concentrated sample enters the gas chromatography-mass spectrometer for real-time quantitative detection, and a detection result is derived in the form of a mass spectrogram or an MIC (many integrated micro-analysis) diagram.
8. The method for analyzing an online Volatile Organic Compound (VOC) navigation monitoring system according to claim 5, wherein the method comprises the following steps: in step S3, the mass spectrogram or MIC diagram is imported into the data analysis module through an industrial personal computer, before analyzing the mass spectrogram or MIC diagram, the data analysis module automatically labels the corresponding mass-to-charge ratio and intensity of the mass spectrogram peak in the mass spectrogram or MIC diagram, and in the mass spectrogram or MIC diagram analysis process, when the concentration of the component analyzed by the qualitative analysis exceeds a threshold value, the concentration value is used for correcting the quantitative curve of the instrument, and meanwhile, the daily operation, maintenance and quality control data of the instrument are recorded and stored in the monitoring database.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640410A (en) * | 2021-07-29 | 2021-11-12 | 河南省政院检测研究院有限公司 | Air quality source analysis method and system |
| CN113671015A (en) * | 2021-07-16 | 2021-11-19 | 中国科学院广州地球化学研究所 | Local wide-range VOC monitoring device based on Internet of things platform and calibration method |
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