CN102980992B - Method and apparatus for measuring value of particulate matters capable of entering into lung and adsorbed by twigs - Google Patents
Method and apparatus for measuring value of particulate matters capable of entering into lung and adsorbed by twigs Download PDFInfo
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- CN102980992B CN102980992B CN201210430010.XA CN201210430010A CN102980992B CN 102980992 B CN102980992 B CN 102980992B CN 201210430010 A CN201210430010 A CN 201210430010A CN 102980992 B CN102980992 B CN 102980992B
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Abstract
The invention relates to the field of monitoring of air quality and specifically to a method and an apparatus for measuring the value of particulate matters capable of entering into the lung and adsorbed by twigs. The method comprises the following steps: S1, measuring the value of particulate matters capable of entering into the lung in an enclosed container and recording the value as X; S2, separating particulate matters adhered onto twigs from the twigs by using wind power in the enclosed container; S3, measuring the value of particulate matters capable of entering into the lung in the enclosed container and recording the value as Y; and S4, calculating the value of particulate matters capable of entering into the lung and adsorbed by the twigs based on a difference value between X and Y. According to the measuring method provided by the invention, wind power is utilized to separate all PM2.5 from the twigs, so the problem of dissolving of PM2.5 in water in a rinsing method is avoided, the value of PM2.5 adsorbed by a variety of twigs can be accurately measured, and thus, an accurate basis is provided for quantification of adsorption capability of a variety of trees to PM2.5 and for selection of afforestation tree varieties.
Description
Technical field
The present invention relates to air quality monitoring field, be specifically related to a kind of method and device of measuring the entered lung particle numerical value of branch absorption.
Background technology
Can enter lung particle is PM2.5, and air quality and visibility etc. is had to important impact.The generation of PM2.5 is mainly derived from the residue discharging through burning in the processes such as commercial production and motor vehicle exhaust emission.PM2.5 particle diameter is little, contain a large amount of organism, inorganics, virus, mould and some strong carcinogens, and surface area is large, and absorption affinity is strong, than coarse particle, more easily enters human body and is detained, and health is caused to great threat.PM2.5 index has become the index of an important observing and controlling air pollution degree.
Along with PM2.5 index more and more receives publicity, the key areas such as Beijing-Tianjin Ji, the Yangtze River Delta, Pearl River Delta and municipality directly under the Central Government and provincial capital have carried out PM2.5 monitoring successively, in this simultaneously, from 21 days January in 2012, Beijing Environmental Protection Agency started to announce the Real-time Monitoring Data of PM2.5 concentration.
Research work major part for PM2.5 all concentrates in the monitoring of PM2.5 concentration in air at present, analyze the spatial and temporal variation of PM2.5 concentration in air, these researchs can help us to understand the CONCENTRATION DISTRIBUTION of PM2.5, but do not propose a solid resolution.
Forest can be adsorbed PM2.5, by afforestation, can effectively reduce PM2.5 concentration, much but its individual ability has on earth, and which seeds is more suitable for, for adsorbing PM2.5, also lacks scientific and effective Data support.PM2.5 monitoring instrument is all to measure airborne PM2.5 concentration at present, and is not suitable for the test to forest absorption PM2.5 ability; The material major part simultaneously containing in PM2.5 is water-soluble substances, and traditional measures PM2.5 for measuring the method for washing of the coarseparticulates such as PM10 and not being suitable for.
Summary of the invention
(1) technical matters that will solve
The object of the present invention is to provide a kind of method of measuring the entered lung particle numerical value of branch absorption, measure accurately the entered lung particle numerical value of branch absorption.
(2) technical scheme
Technical solution of the present invention is as follows:
A method of measuring the entered lung particle numerical value of branch absorption, comprises the following steps:
S1. measure the entered lung particle numerical value in closed container, be designated as X;
S2. in closed container, use wind-force that the particulate matter adhering on branch is separated from branch;
S3. again measure the entered lung particle numerical value in closed container, be designated as Y;
S4. according to the difference of X and Y, calculate the entered lung particle numerical value of branch absorption.
Preferably, described step S2 is specially:
In closed container, use wind-force to carry out the purging of all directions the variation of the entered lung particle numerical value in Real-Time Monitoring closed container to branch;
Monitoring can enter lung particle numerical value and no longer change time, think that all attaching particles materials are separated from branch.
The device of entered lung particle numerical value of realizing the measurement branch absorption of method described in claim 1, comprises sealable measuring chamber, hair-dryer and can enter lung particle monitoring instrument; It is inner that described hair-dryer is arranged at described measuring chamber, describedly enters lung particle monitoring instrument and is connected with described measuring chamber, for the entered lung particle numerical value in the described measuring chamber of real-time detection.
Preferably, the material of described measuring chamber is organic glass.
The device of entered lung particle numerical value of realizing the measurement branch absorption of method described in claim 1, comprises sealable measuring chamber, hair-dryer, ventilation duct and can enter lung particle monitoring instrument; The airtight connection of air outlet of described ventilation duct one end and described hair-dryer, the described measuring chamber of the airtight access of the other end; The air inlet of described hair-dryer is communicated with described measuring chamber is airtight; Describedly enter lung particle monitoring instrument and be connected with described measuring chamber, for detecting in real time the entered lung particle numerical value in described measuring chamber.
Preferably, one end of described ventilation duct access measuring chamber is provided with automatic rotation purging device, for branch being carried out to the purging of 360 °.
Preferably, described measurement mechanism also comprises the airtight detector being connected with described measuring chamber, and described airtight detector is for determining the airtight situation of described measuring chamber.
Preferably, the material of described measuring chamber is organic glass.
(3) beneficial effect
Measuring method provided by the invention is by adopting wind-force to make all PM2.5 separated from branch, the problem of having avoided method for washing can cause PM2.5 to dissolve in water, can measure accurately the PM2.5 numerical value of various branch absorption, for quantizing various seeds to the adsorptive power of PM2.5 and selecting reproducting tree species that accurate foundation is provided.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the device of a kind of entered lung particle numerical value of measuring branch absorption of the present invention.
Fig. 2 is the schematic diagram of the device of another kind of the entered lung particle numerical value of measuring branch absorption of the present invention.
In figure, 1: measuring chamber; 2: hair-dryer; 3: can enter lung particle detector; 4: automatic rotation purging device; 5: airtight detector.
Embodiment
Below in conjunction with drawings and Examples, the embodiment of invention is described further.
Embodiment mono-
A method of measuring the entered lung particle numerical value of branch absorption, comprises the following steps:
S1. measure initial entered lung particle numerical value in closed container, be designated as X;
S2. the branch of choosing is suspended in closed container, uses wind-force that the particulate matter adhering on branch is separated from branch;
S3. again measure the entered lung particle numerical value in closed container, be designated as Y;
S4. according to the difference of X and Y, calculate the entered lung particle numerical value of branch absorption, in conjunction with parameters such as the diameter of this section of branch, length, can obtain the adsorptive power value of these seeds to PM2.5.
Wherein, step S2 is specially:
In closed container, use wind-force to carry out the purging of all directions the variation of the entered lung particle numerical value in Real-Time Monitoring closed container to branch; Monitoring can enter lung particle numerical value and no longer change time, think that all attaching particles materials are separated from branch.
The problem that this method has avoided method for washing can cause PM2.5 to dissolve in water, can measure the PM2.5 numerical value of various branch absorption accurately, for quantizing various seeds to the adsorptive power of PM2.5 and selecting reproducting tree species that accurate foundation is provided.
Embodiment bis-
A device of measuring as shown in Figure 1 the entered lung particle numerical value of branch absorption, comprises sealable measuring chamber 1, hair-dryer 2 and can enter lung particle monitoring instrument 3; The material of measuring chamber 1 is organic glass, because organic glass is fewer than the PM2.5 of other material absorption, can reduce measuring error; Hair-dryer 2 is arranged at measuring chamber 1 inside, can enter lung particle monitoring instrument 3 and be connected with measuring chamber 1, for detecting in real time the entered lung particle numerical value in measuring chamber.
During measurement, first monitor the entered lung particle numerical value in measuring chamber, be designated as X; Then the branch of choosing is suspended in measuring chamber, and airtight measured value; Use the wind-force of hair-dryer generation by the variation of all attaching particles materials entered lung particle numerical value in separated Real-Time Monitoring measuring chamber simultaneously from branch, monitoring record entered lung particle numerical value now can enter lung particle numerical value and no longer change time, be Y, and think that all attaching particles materials are separated from branch; According to the difference of X and Y, calculate the entered lung particle numerical value of branch absorption.Measuring process needs (for example 5 minutes) at short notice to complete, to guarantee the normal physiological property of blade.
Embodiment tri-
But although the slight interference that causes that the ozone producing during simple and easy hair-dryer 2 work of measurement mechanism in embodiment bis-can be to measured value, therefore the present invention has also designed the another kind of device of measuring the entered lung particle numerical value of branch absorption as shown in Figure 2, and it comprises sealable measuring chamber 1, hair-dryer 2, ventilation duct and can enter lung particle monitoring instrument 3; The material of measuring chamber 1 is organic glass; Hair-dryer 2 is arranged on measuring chamber 1 outside, the interference of the ozone producing in the time of can avoiding hair-dryer 2 work to measured value; The airtight connection of air outlet of ventilation duct one end and hair-dryer 2, the airtight access measuring chamber 1 of the other end, the air inlet of hair-dryer 2 is communicated with measuring chamber 1 is airtight, has so just guaranteed that extraneous gas can not enter measuring chamber 1; Can enter lung particle monitoring instrument 3 and be connected with measuring chamber 1, for detecting in real time the entered lung particle numerical value in measuring chamber 1.
Further, one end of ventilation duct access measuring chamber 1 is provided with automatic rotation purging device 4, for branch being carried out to the purging of 360 °.
Further, measurement mechanism also comprises the airtight detector 5 being connected with measuring chamber, and airtight detector 5, for determining the airtight situation of measuring chamber 1, guarantees that measuring chamber 1 and outside air do not have gas exchange.
The measuring method of above-mentioned measurement mechanism is identical with embodiment bis-.
Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification, therefore all technical schemes that are equal to also belong to protection category of the present invention.
Claims (7)
1. a method of measuring the entered lung particle numerical value of branch absorption, comprises the following steps:
S1. measure the entered lung particle numerical value in closed container, be designated as X;
S2. in closed container, use wind-force that the particulate matter adhering on branch is separated from branch;
S3. again measure the entered lung particle numerical value in closed container, be designated as Y;
S4. according to the difference of X and Y, calculate the entered lung particle numerical value of branch absorption;
Described step S2 is specially:
In closed container, use wind-force to carry out the purging of all directions the variation of the entered lung particle numerical value in Real-Time Monitoring closed container to branch;
Monitoring can enter lung particle numerical value and no longer change time, think that all attaching particles materials are separated from branch.
2. the device of entered lung particle numerical value of realizing the measurement branch absorption of method described in claim 1, is characterized in that: comprise sealable measuring chamber, hair-dryer and can enter lung particle monitoring instrument; It is inner that described hair-dryer is arranged at described measuring chamber, describedly enters lung particle monitoring instrument and is connected with described measuring chamber, for the entered lung particle numerical value in the described measuring chamber of real-time detection.
3. device according to claim 2, is characterized in that: the material of described measuring chamber is organic glass.
4. the device of entered lung particle numerical value of realizing the measurement branch absorption of method described in claim 1, is characterized in that: comprise sealable measuring chamber, hair-dryer, ventilation duct and can enter lung particle monitoring instrument; The airtight connection of air outlet of described ventilation duct one end and described hair-dryer, the described measuring chamber of the airtight access of the other end; The air inlet of described hair-dryer is communicated with described measuring chamber is airtight; Describedly enter lung particle monitoring instrument and be connected with described measuring chamber, for detecting in real time the entered lung particle numerical value in described measuring chamber.
5. device according to claim 4, is characterized in that: one end of described ventilation duct access measuring chamber is provided with automatic rotation purging device, for branch being carried out to the purging of 360 °.
6. device according to claim 4, is characterized in that: described measurement mechanism also comprises the airtight detector being connected with described measuring chamber, and described airtight detector is for determining the airtight situation of described measuring chamber.
7. according to the device described in claim 4 to 6 any one, it is characterized in that: the material of described measuring chamber is organic glass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210430010.XA CN102980992B (en) | 2012-10-31 | 2012-10-31 | Method and apparatus for measuring value of particulate matters capable of entering into lung and adsorbed by twigs |
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| CN201210430010.XA CN102980992B (en) | 2012-10-31 | 2012-10-31 | Method and apparatus for measuring value of particulate matters capable of entering into lung and adsorbed by twigs |
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| CN102980992B true CN102980992B (en) | 2014-03-19 |
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| CN103278433B (en) * | 2013-05-16 | 2015-07-15 | 北京林业大学 | Device and method for researching particle absorbing capability of plants |
| CN104251787B (en) * | 2013-06-27 | 2017-02-01 | 王兵 | Method and device for converting air particulate matters absorbed by leaf blades into aerosols |
| CN104049065B (en) * | 2014-05-16 | 2018-08-17 | 长沙标朗住工科技有限公司 | A kind of device and the method for inspection of experimental material Adsorption PM2.5 effects |
| CN105223111A (en) * | 2014-07-04 | 2016-01-06 | 中国科学院苏州纳米技术与纳米仿生研究所 | The external safety detection device of environment inhalable particles and method |
| CN104722340B (en) * | 2015-03-02 | 2016-06-01 | 上海交通大学 | artificial aerosol climate box and using method thereof |
| CN105388255B (en) * | 2015-11-05 | 2017-07-04 | 北京林业大学 | Multichannel uniform enters aerosol experiment detecting system |
| CN106018015A (en) * | 2016-08-05 | 2016-10-12 | 福建师范大学 | Static box for measuring methane transmission rate of mangrove forest trunks |
| CN111307645A (en) * | 2019-12-30 | 2020-06-19 | 湖北富邦新材料有限公司 | Method for rapidly measuring dust on surface of granular fertilizer |
| CN111122375A (en) * | 2019-12-30 | 2020-05-08 | 湖北富邦新材料有限公司 | Method for rapidly measuring adhesion of anti-caking agent on surface of granular fertilizer |
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| US6964190B2 (en) * | 2002-06-28 | 2005-11-15 | Horiba, Ltd. | Particulate matter concentration measuring apparatus |
| JP2004028945A (en) * | 2002-06-28 | 2004-01-29 | Horiba Ltd | Apparatus for measuring concentration of suspended particulate matter |
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