CN104020089A - Method for calibrating PM2.5 (Particulate Matter2.5) monitor - Google Patents
Method for calibrating PM2.5 (Particulate Matter2.5) monitor Download PDFInfo
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- CN104020089A CN104020089A CN201410244506.7A CN201410244506A CN104020089A CN 104020089 A CN104020089 A CN 104020089A CN 201410244506 A CN201410244506 A CN 201410244506A CN 104020089 A CN104020089 A CN 104020089A
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Abstract
The invention discloses a method for calibrating a PM2.5 (Particulate Matter2.5) monitor. The method comprises the following steps: preparing aerosols with different sizes by using an aerosol generator, respectively adding the aerosols into a mixing box of a pipeline through each corresponding channel to be mixed with clean air, and diluting the generated aerosols to the required concentrations; adding the diluted aerosols into a common pipeline and then shunting, enabling one part of the aerosols to flow through the PM2.5 monitor so as to measure the concentrations of PM2.5 aerosols repeatedly and obtain an average value; enabling the other part of the aerosols to flow through a front particle size spectrometer, a PM2.5 cutter and a rear particle size spectrometer so as to measure the concentrations of PM2.5 aerosols repeatedly and obtain an average value; comparing the average values of two pipelines to calibrate the PM2.5 monitor. The method is high in detection accuracy and efficiency and easy to popularize and use.
Description
Technical field
The present invention relates to a kind of PM
2.5the quick and precisely collimation technique of monitor, concrete, relate to a kind of PM
2.5monitor calibration steps.
Background technology
PM
2.5in finger atmosphere, aerodynamic diameter is less than or equal to the particle of 2.5 μ m, and also referred to as entering lung particle, it forms main with artificially relevant.GB3095-2012 " ambient air quality " has increased PM
2.5monitoring index.Chinese Ministry of Environmental Protection requires from 2012 in key areas such as Beijing-Tianjin Ji, the Yangtze River Delta, Pearl River Deltas and municipality directly under the Central Government and provincial capital carry out PM
2.5monitoring, all to and evaluate surrounding air PM according to above-mentioned standard monitoring to all parts of the country in 2016
2.5concentration.
At present, domestic PM
2.5monitor quality is uneven, cannot accurate evaluation surrounding air in PM
2.5content.For ensureing PM
2.5accurately and reliably, the U.S., Japan, European Union etc. have carried out detection method standardization and the research of metering traceability to Monitoring Data.The external single channel PM having adopted
2.5monitor calibration steps, at calibration PM
2.5when monitor, need to prepare multiple single size gasoloid, before being passed into calibrating installation, different size gasoloid must clean whole pipelines, process is loaded down with trivial details, calibration efficiency is low, and the long rate that exists that purges dead angle that causes of pipeline increases, cause having different size aerosol particle residual, affect calibration accuracy.
Summary of the invention
In order to address the above problem, the invention provides a kind of PM
2.5monitor calibration steps, the method is reasonable in design, has avoided existing calibration system need to repeat to purge the problem of whole pipelines, adopts the method, and precision and efficiency of detecting is high, and cost is lower, simple to operate, is easy to promote the use of.
In order to achieve the above object, technical scheme of the present invention is:
A kind of PM
2.5monitor calibration steps, comprise the steps: that aerosol generator 1 prepares the gasoloid of different size, the blending bin 103,203,303,403,503,603,703,803 that enters its pipeline by every respective channel respectively mixes with pure air, and the gasoloid of generation is diluted to desired concn; After the gasoloid of dilution enters public pipeline, shunt, a part is passed through PM
2.5monitor 5, repeatedly measures PM
2.5aerocolloidal concentration is also averaged, and another part is successively by preposition particle diameter spectrometer 7, PM
2.5cutter 8 and rearmounted particle diameter spectrometer 9, repeatedly measure PM
2.5aerocolloidal concentration is also averaged; By comparing the mean value of two pipelines, to PM
2.5monitor 5 is calibrated.
Described passage is eight, and gasoloid size prepared by every passage is respectively 1.5 ± 0.25 μ m, 2.0 ± 0.25 μ m, 2.2 ± 0.25 μ m, 2.5 ± 0.25 μ m, 2.8 ± 0.25 μ m, 3.0 ± 0.25 μ m, 3.5 ± 0.25 μ m, 4.0 ± 0.5 μ m.
Pure air after described gasoloid is measured by flowmeter in blending bin 103,203,303,403,503,603,703,803 dilutes.
Described each switching gasoloid is flowed through and is purged public pipeline with pure air before pipeline.
Described aerosol discharge to before in air all through clarifier I6, II10 purified treatment.
Owing to having adopted described technical scheme, the present invention has following superiority:
1, eight kinds of single size gasoloids enter detecting instrument by corresponding pipeline separately respectively, need to before passing into different size gasoloid, not purge whole pipelines, only need to purge public part, have improved calibration efficiency, have reduced error.
2, adopt system of the present invention can accurately measure PM
2.5aerocolloidal concentration, meets calibration PM
25the requirement of monitor, and simple to operate, be easy to detect industry in metering and apply.
Brief description of the drawings
Fig. 1 is a kind of PM of the present invention
2.5the process flow diagram of monitor calibration steps; (10-first passage, 20-second channel, 30-third channel, 40-four-way, 50-Five-channel, 60-the 6th passage, 70-the 7th passage, 80-the 8th passage, 1-aerosol generator, 102,202,302,402,502,602,702,802-pure air entrance, 103,203,303,403,503,603,703,803-blending bin, 4-pure air entrance, 5-PM
2.5monitor, 6-clarifier I, the preposition particle diameter spectrometer of 7-, 8-PM
2.5cutter, the rearmounted particle diameter spectrometer of 9-, 10-clarifier II)
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Embodiment:
Fig. 1 shows an embodiment of calibration system of the present invention, has eight passages: first passage 10, second channel 20, third channel 30, four-way 40, Five-channel 50, the 6th passage 60, the 7th passage 70 and the 8th passage 80.
First passage 10 is prepared the aerosol particle of particle diameter 1.5 ± 0.25 μ m by aerosol generator 1, enter blending bin 103 and mix by 102 pure airs that enter blending bin 103, and the gasoloid of generation is diluted to 35 μ g/m
3, the gasoloid of dilution is shunted after entering public pipeline, and a part is passed through PM
2.5monitor 5, after instrument registration to be monitored is stable, per minute reading once, is read six groups of data, measures PM
2.5aerocolloidal mean concentration, another part is successively by preposition particle diameter spectrometer 7, PM2.5 cutter 8 and rearmounted particle diameter spectrometer 9, and after two particle diameter spectrometer registrations are stable, per minute reading once, is read six groups of data, measures PM
25aerocolloidal mean concentration; By relatively measuring concentration mean value twice, calibration PM
2.5monitor 5.Single size is measured complete, closes first passage 10, and air intake 4 passes into pure air and purges public pipeline, after clarifier I6, II10 filter, discharges.
Second channel 20 is prepared the aerosol particle of particle diameter 2.0 ± 0.25 μ m by aerosol generator 1; By relatively measuring concentration value twice, calibration PM
2.5monitor 5.Single size is measured complete, purges public pipeline.
Third channel 30 is prepared the aerosol particle of particle diameter 2.2 ± 0.25 μ m by aerosol generator 1; By relatively measuring concentration value twice, calibration PM
2.5monitor 5.Single size is measured complete, purges public pipeline.
Four-way 40 is prepared the aerosol particle of particle diameter 2.5 ± 0.25 μ m by aerosol generator 1; By relatively measuring concentration value twice, calibration PM
2.5monitor 5.Single size is measured complete, purges public pipeline.
Five-channel 50 is prepared the aerosol particle of particle diameter 2.8 ± 0.25 μ m by aerosol generator 1; By relatively measuring concentration value twice, calibration PM
2.5monitor 5.Single size is measured complete, purges public pipeline.
The 6th passage 60 is prepared the aerosol particle of particle diameter 3.0 ± 0.25 μ m by aerosol generator 1; By relatively measuring concentration value twice, calibration PM
2.5monitor 5.Single size is measured complete, purges public pipeline.
The 7th passage 70 is prepared the aerosol particle of particle diameter 3.5 ± 0.25 μ m by aerosol generator 1; By relatively measuring concentration value twice, calibration PM
2.5monitor 5.Single size is measured complete, purges public pipeline.
The 8th passage 80 is prepared the aerosol particle of particle diameter 4.0 ± 0.25 μ m by aerosol generator 1; By relatively measuring concentration value twice, calibration PM
2.5monitor 5.Single size is measured complete, purges public pipeline.
Claims (5)
1. a PM
2.5monitor calibration steps, comprise the steps: that aerosol generator 1 prepares the gasoloid of different size, the blending bin 103,203,303,403,503,603,703,803 that enters its pipeline by every respective channel respectively mixes with pure air, and the gasoloid of generation is diluted to desired concn; After the gasoloid of dilution enters public pipeline, shunt, a part is passed through PM
25monitor 5, repeatedly measures PM
25aerocolloidal concentration is also averaged, and another part is successively by preposition particle diameter spectrometer 7, PM
25cutter 8 and rearmounted particle diameter spectrometer 9, repeatedly measure PM
25aerocolloidal concentration is also averaged; By comparing the mean value of two pipelines, to PM
25monitor 5 is calibrated.
2. a kind of PM according to claim 1
2.5monitor calibration steps, it is characterized in that described passage is eight, gasoloid size prepared by every passage is respectively 1.5 ± 0.25 μ m, 2.0 ± 0.25 μ m, 2.2 ± 0.25 μ m, 2.5 ± 0.25 μ m, 2.8 ± 0.25 μ m, 3.0 ± 0.25 μ m, 3.5 ± 0.25 μ m, 4.0 ± 0.5 μ m.
3. a kind of PM according to claim 1
2.5monitor calibration steps, is characterized in that the pure air after described gasoloid is measured by flowmeter in blending bin 103,203,303,403,503,603,703,803 dilutes.
4. a kind of PM according to claim 1
25monitor calibration steps, is characterized in that described each switching gasoloid is flowed through to purge public pipeline with pure air before pipeline.
5. a kind of PM according to claim 1
2.5monitor calibration steps, it is characterized in that described aerosol discharge to before in air all through clarifier I6, II10 purified treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410244506.7A CN104020089A (en) | 2014-06-05 | 2014-06-05 | Method for calibrating PM2.5 (Particulate Matter2.5) monitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410244506.7A CN104020089A (en) | 2014-06-05 | 2014-06-05 | Method for calibrating PM2.5 (Particulate Matter2.5) monitor |
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|---|---|
| CN104020089A true CN104020089A (en) | 2014-09-03 |
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ID=51436968
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410244506.7A Pending CN104020089A (en) | 2014-06-05 | 2014-06-05 | Method for calibrating PM2.5 (Particulate Matter2.5) monitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865994A (en) * | 2016-04-22 | 2016-08-17 | 苏州翰霖汽车科技有限公司 | Calibration device for PM2.5 sensors and calibrating method thereof |
| CN107102350A (en) * | 2017-05-03 | 2017-08-29 | 中国核动力研究设计院 | A kind of radioactivity inert gas monitor calibration method and system |
| CN107110756A (en) * | 2014-11-21 | 2017-08-29 | 海因里希·伊格尔塞德尔 | Method and system for measuring fine particle concentration PM1, PM2.5 and PM10 simultaneously |
| CN108169101A (en) * | 2018-01-18 | 2018-06-15 | 广州纤维产品检测研究院 | A kind of haze window screening filter effect test device and test method |
| CN111812002A (en) * | 2020-06-29 | 2020-10-23 | 上海交通大学 | Small flow aerosol measuring method |
| CN113720747A (en) * | 2021-08-31 | 2021-11-30 | 北京航空航天大学 | Aerosol particle dilution system and aerosol particle counting device with same |
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| CN201402268Y (en) * | 2009-02-25 | 2010-02-10 | 北京泰华恒越科技发展有限责任公司 | Intelligent environmental air quality monitor |
| CN202548040U (en) * | 2011-12-14 | 2012-11-21 | 河北先河环保科技股份有限公司 | Automatic particle monitoring instrument |
| CN202793976U (en) * | 2012-06-13 | 2013-03-13 | 北京绿林创新数码科技有限公司 | Multi-cutter dust on-line monitoring system |
| CN103674796A (en) * | 2013-12-23 | 2014-03-26 | 青岛科技大学 | Multi-channel PM2.5 monitor calibration device |
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2014
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Patent Citations (4)
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| CN201402268Y (en) * | 2009-02-25 | 2010-02-10 | 北京泰华恒越科技发展有限责任公司 | Intelligent environmental air quality monitor |
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| CN103674796A (en) * | 2013-12-23 | 2014-03-26 | 青岛科技大学 | Multi-channel PM2.5 monitor calibration device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110756A (en) * | 2014-11-21 | 2017-08-29 | 海因里希·伊格尔塞德尔 | Method and system for measuring fine particle concentration PM1, PM2.5 and PM10 simultaneously |
| CN107110756B (en) * | 2014-11-21 | 2020-12-29 | 海因里希·伊格尔塞德尔 | Method and system for simultaneously measuring fine particulate matter concentrations PM1, PM2.5, and PM10 |
| CN105865994A (en) * | 2016-04-22 | 2016-08-17 | 苏州翰霖汽车科技有限公司 | Calibration device for PM2.5 sensors and calibrating method thereof |
| CN107102350A (en) * | 2017-05-03 | 2017-08-29 | 中国核动力研究设计院 | A kind of radioactivity inert gas monitor calibration method and system |
| CN107102350B (en) * | 2017-05-03 | 2018-11-13 | 中国核动力研究设计院 | A kind of radioactivity inert gas monitor calibration method and system |
| CN108169101A (en) * | 2018-01-18 | 2018-06-15 | 广州纤维产品检测研究院 | A kind of haze window screening filter effect test device and test method |
| CN108169101B (en) * | 2018-01-18 | 2023-12-19 | 广州纤维产品检测研究院 | Anti-haze window screening filtering effect testing device and testing method |
| CN111812002A (en) * | 2020-06-29 | 2020-10-23 | 上海交通大学 | Small flow aerosol measuring method |
| CN113720747A (en) * | 2021-08-31 | 2021-11-30 | 北京航空航天大学 | Aerosol particle dilution system and aerosol particle counting device with same |
| CN113720747B (en) * | 2021-08-31 | 2023-08-18 | 北京航空航天大学 | Aerosol particulate matter dilution system and aerosol particulate matter counting device with same |
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Application publication date: 20140903 |