CN106873025A - A kind of radon harvester and method - Google Patents
A kind of radon harvester and method Download PDFInfo
- Publication number
- CN106873025A CN106873025A CN201710229067.6A CN201710229067A CN106873025A CN 106873025 A CN106873025 A CN 106873025A CN 201710229067 A CN201710229067 A CN 201710229067A CN 106873025 A CN106873025 A CN 106873025A
- Authority
- CN
- China
- Prior art keywords
- collecting cassette
- radon
- harvester
- seal box
- activated carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052704 radon Inorganic materials 0.000 title claims abstract description 77
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052770 Uranium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 13
- 238000001179 sorption measurement Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 description 11
- 239000003610 charcoal Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005251 gamma ray Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 231100000315 carcinogenic Toxicity 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Measurement Of Radiation (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of radon harvester and method, described device includes collecting cassette, collection frame and seal box, the collecting cassette is cylindric collecting cassette, two axial ends of cylindric collecting cassette are molded by filter screen, activated carbon is filled with cylindric collecting cassette, the mesh aperture of the filter screen is less than activated carbon particle size, the collection frame includes trapezoidal base, the short side of trapezoidal base is connected with for the collecting cassette to be embedded in into interior accepting rack, the seal box is interior for the collecting cassette in non-sampled state to be sealed in, seal box includes box body and lid, box body and lid form confined space after being connected through a screw thread.Harvester of the present invention can realize that collecting cassette carries out two-sided collection, collecting cassette thickness is suitable, outer layer activated carbon can be ignored to the screen effect of internal layer active carbon adsorption radon ability, enable to whole activated carbon layer equably to adsorb radon, improve the degree of accuracy of measurement result.
Description
Technical field
Radon technical field is surveyed the invention belongs to air, and in particular to a kind of radon harvester and method.
Background technology
Radon gas is a kind of tracer, and it can indicate subterranean deposit, geological structure, earthquake etc., therefore radon survey is wide
It is general to be applied to the aspects such as mineral product geology, hydrogeology, engineering geology, disaster geology, environmental geology.The radioactivity of radon gas is to human body
Health be harmful, before the more than ten years, EPA（EPA）《NATURE》It is open on magazine to point out：Radon is to be related to public affairs
The popular problem of common health；Radon gas is present in the main construction and decoration such as soil, brick, cement, granite as natural radiation thing
In material, it is considered to be only second to the second largest carcinogenic factor of smoking, be classified as radon make one carcinogenic 19 by the World Health Organization
Plant one of topmost material.
Activated carbon is a kind of porous carbonaceous material, its flourishing microporous structure and huge specific surface area, makes it to being permitted
Many kinds of substance has stronger adsorption capacity, and is used widely in many fields such as purification of air, waste water treatment.Due to work
Property charcoal there is very strong adsorption capacity to radon, the activated carbon to having adsorbed radon gas carries out γ measurements, where can calculating activated carbon
The radon consistence of environment, at present, activated carbon gamma spectrum survey radon method because its is cheap, measurement sensitivity is high, it is simple to operate the features such as
Main flow surveys one of radon method in having become current environment air.
Traditional survey radon activated charcoal only has one side and air contact, and collecting efficiency is not high and thick to spend up to 3~5cm, top layer
Activated carbon the shielded effect of bottom active carbon adsorption radon can not be ignored, when the sampling period is shorter, top layer activated carbon inhale
Attached radon amount adsorbs radon amount more than bottom, and whole the uneven of active carbon layer radon absorption can make active carbon adsorption radon amount and Radon
Deviation of concentration linear relationship, makes measurement result there is larger error.And during detector measurement, the less bottom of absorption radon amount close to
Probe causes that detection efficient is relatively low.
The content of the invention
It is high it is an object of the invention to provide a kind of adsorption efficiency, the accurate radon harvester of measurement result and method.
To achieve these goals, the present invention uses following technical scheme：
A kind of radon harvester, it includes collecting cassette, collection frame and seal box, and the collecting cassette is cylindric collecting cassette, circle
Two axial ends of column collecting cassette are molded by filter screen, and activated carbon, the mesh hole of the filter screen are filled with cylindric collecting cassette
Footpath is less than activated carbon particle size, and the collection frame includes trapezoidal base, and the short side of trapezoidal base is connected with for by the collecting cassette
Interior accepting rack is embedded in, the seal box is interior for the collecting cassette in non-sampled state to be sealed in, and seal box includes box
Body and lid, box body and lid form confined space after being connected through a screw thread.
Further, it is described collection frame by toughness material be molded, the toughness material can for plastics or other.
The trapezoidal base and accepting rack of the collection frame are integrally formed.
The accepting rack is the circular frame matched with collection box shaped, size.
Further, the cylindric side of the collecting cassette is molded by aluminum material.
Further, two a diameter of 45~60mm of axial end of the collecting cassette, collecting cassette thickness is 7~9mm.
Preferably, the collecting cassette thickness is 7.5mm.
The seal box is molded by ferrous material, and the box body cross section and lid cross section of seal box are circle, its
It is big neglect collecting cassette size depending on.
Method present invention also offers radon collection is carried out using the radon harvester, it is specific as follows：
1）Collecting cassette is taken out from seal box and is placed in baking oven, 5-6h is heated under the conditions of 120-130 DEG C, with except deactivation
Radon gas and moisture in charcoal；
2）By in the accepting rack of collecting cassette insertion collection frame, then collection frame is put into the closed container equipped with uranium ore, most
Closed container is put into during temperature has been set to 25 DEG C of baking boxs of constant temperature afterwards, starts the collection of radon, acquisition time is 2h；
3）After collection terminates, closed container is opened, collection frame is taken out, then collecting cassette is taken out and put back to close from accepting rack
Jacket interior sealing；
4）Above-mentioned collecting cassette, up to after 3h, is put in BH1936 Low background multiple tracks gamma energy spectrometers by collecting cassette time of repose in the seal box
Probe on, the either axial end face of the collecting cassette is carried out into activated carbon γ measurements close to probe, time of measuring is 300s, obtain
Total γ is counted（Absorption is counted）；
5）The total γ of background for measuring BH1936 Low background multiple tracks gamma energy spectrometers is counted, and time of measuring is 300s,；
6）By above-mentioned steps 4）The total γ for obtaining counts deduction step 5）The total γ of background of acquisition is counted, and obtains total γ net counts.
The present invention uses above technical scheme, during sampling, collecting cassette is embedded in the accepting rack of collection frame, the two of collecting cassette
Individual axial end all with air contact, can realize two-sided collection, and traditional survey radon activated charcoal only has one side and air contact,
The activated carbon of top layer has shielding action to bottom active carbon adsorption radon, especially when the sampling period is shorter, top layer activated carbon
Absorption radon amount adsorbs radon amount more than bottom, and the uneven of whole active carbon layer radon absorption can make active carbon adsorption radon amount and air
Radon consistence deviates linear relationship, measurement result is there is larger error.Radon harvester of the invention, its collection frame includes trapezoidal
Base, the short side of trapezoidal base is connected with accepting rack, when carrying out radon collection, by the accepting rack of collecting cassette insertion collection frame, adopts
Collect two axial ends of box all with air contact, the radon absorption of whole active carbon layer is more uniform, overcomes traditional survey radon collection
Box active carbon layer adsorbs uneven defect so that measurement result is more accurate.Additionally, the present invention is also carried out to the thickness of collecting cassette
Optimum choice, it is determined that optimal active carbon layer thickness, it is described to adopt when carrying out radon using radon harvester of the invention and gathering
Collection box carries out two-sided collection, increased the contact area with air, and thickness is suitable, and outer layer activated carbon is to internal layer active carbon adsorption radon
The screen effect of ability can be ignored, and enable to whole activated carbon layer equably to adsorb radon, and be placed in Low background γ radiation energies
There is good gamma-ray detection efficiency on the probe of spectrometer, the sampling period more than 50% is shortened while improving accuracy of measurement.
Brief description of the drawings
Fig. 1 is the schematic diagram of radon harvester sample states of the present invention；
Fig. 2 is the collecting cassette schematic diagram of radon harvester of the present invention；
Fig. 3 is the seal box schematic diagram of radon harvester of the present invention；
Fig. 4 is the collecting cassette thickness and total net relation curve of γ net counts of radon harvester of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
Embodiment 1
As shown in one of Fig. 1-3, radon harvester of the invention, it includes collecting cassette 1, collection frame 2 and seal box 3, described
Collecting cassette 1 is cylindric collecting cassette, and two axial ends of cylindric collecting cassette are molded by filter screen 11, filling in cylindric collecting cassette
Active charcoal 4, the mesh aperture of the filter screen 11 is less than activated carbon particle size 4, and the collection frame 2 includes trapezoidal base 21, trapezoidal
The short side of base 21 is connected with for the collecting cassette 1 to be embedded in into interior accepting rack 22, and the seal box 3 is used for will be in non-
In the collecting cassette 1 of sample states is sealed in, seal box 3 includes box body 32 and lid 31, and box body 32 and lid 31 are connected by screw thread
Confined space is formed after connecing.
The collection frame 2 is molded by the good material of plastics or other toughness, gathers the trapezoidal base 21 and accepting rack of frame 2
22 are integrally formed, and the accepting rack 22 is the circular frame matched with the shape of collecting cassette 1, size.
The cylindric side 12 of the collecting cassette 1 is molded by aluminum material.Two axial ends of the collecting cassette 1 are a diameter of
45~60mm, the thickness of collecting cassette 1 is 7~9mm, and optimum thickness is 7.5mm.
The seal box 3 is molded by ferrous material, and the cross section of box body 32 and the cross section of lid 31 of seal box 3 are circle
Shape, it is neglected greatly depending on collecting cassette size.
Embodiment 2
The thickness selection of collecting cassette
Axial end diameter is consistent, and the different collecting cassette sample of thickness is keeping carrying out radon simultaneously in the case that other conditions are consistent
Collection experiment, step is as follows：
1）Collecting cassette is taken out from seal box and is placed in baking oven, 5-6h is heated under the conditions of 120-130 DEG C, with except deactivation
Radon gas and moisture in charcoal；
2）By in the accepting rack of collecting cassette insertion collection frame, then collection frame is put into the closed container equipped with uranium ore, most
Closed container is put into during temperature has been set to 25 DEG C of baking boxs of constant temperature afterwards, starts the collection of radon, acquisition time is 2h；
3）After collection terminates, closed container is opened, collection frame is taken out, then collecting cassette is taken out and put back to close from accepting rack
Jacket interior sealing；
4）Above-mentioned collecting cassette, up to after 3h, is put in BH1936 Low background multiple tracks gamma energy spectrometers by collecting cassette time of repose in the seal box
Probe on, the either axial end face of the collecting cassette is carried out into activated carbon γ measurements close to probe, time of measuring is 300s, obtain
Total γ is counted（Absorption is counted）；
5）The total γ of background for measuring BH1936 Low background multiple tracks gamma energy spectrometers is counted, and time of measuring is 300s,；
6）By above-mentioned steps 4）The total γ for obtaining counts deduction step 5）The total γ of background of acquisition is counted, and obtains total γ net counts.
Experimental result is as shown in table 1：
Total γ of the collecting cassette of table 1 absorption radon experiment is counted
| Thickness（mm） | 5 | 7.5 | 10 | 12.5 | 15 | 17.5 | 20 | 25 | 30 | 35 |
| The total γ of background is counted | 1265 | 1307 | 1362 | 1284 | 1360 | 1329 | 1309 | 1338 | 1347 | 1434 |
| Absorption is counted | 9508 | 10271 | 9787 | 9577 | 9616 | 8883 | 8904 | 8500 | 7716 | 8060 |
| Total γ net counts | 8243 | 8964 | 8425 | 8293 | 8256 | 7554 | 7595 | 7162 | 6369 | 6626 |
With collecting cassette thickness（mm）It is transverse axis, total γ net counts are the longitudinal axis, the relation curve for obtaining therebetween is as shown in Figure 4.
As seen from Figure 4, when collecting cassette thickness is less than 7.5mm, total γ net counts increase with the increase of thickness；When collecting cassette is thick
More than after 7.5mm, total γ net counts are reduced degree with the increase of thickness.The above results are illustrated, when collecting cassette thickness is smaller, are increased
Plus collecting cassette thickness can effectively increase the adsorbance of radon and then increase total γ net counts；When collecting cassette thickness reach it is a certain
Value, being now further added by the thickness of collecting cassette can not effectively increase the adsorbance of radon, because outer layer activated carbon is to internal layer activity
The screen effect of charcoal absorption radon can not be ignored so that activated carbon can not sufficiently uniformly adsorb radon；Further, since collecting cassette thickness
Increase, gamma-ray detection efficiency reduction of the probe to another axial end of collecting cassette so that total γ net counts are shown as with adopting
Collect the increase of box thickness and reduce.In sum, the final thickness for determining collecting cassette of the present invention is 7~9mm, and optimum thickness is
7.5mm。
When carrying out radon collection using radon harvester of the invention, by the accepting rack of collecting cassette insertion collection frame, gather
Two axial ends of box all carry out two-sided collection with air contact, the i.e. collecting cassette, increased the contact area with air, whole
The radon absorption of individual active carbon layer is more uniform, and collecting cassette thickness is suitable in addition, and outer layer activated carbon is to internal layer active carbon adsorption radon ability
Screen effect can ignore, enable to whole activated carbon layer equably to adsorb radon, and be placed in Low background γ radiation spectrometers
Probe on have good gamma-ray detection efficiency, it is possible to increase the degree of accuracy of measurement result.
Claims (10)
1. a kind of radon harvester, it is characterised in that：It includes collecting cassette, collection frame and seal box, and the collecting cassette is circle
Column collecting cassette, two axial ends of cylindric collecting cassette are molded by filter screen, and activated carbon is filled with cylindric collecting cassette, described
The mesh aperture of filter screen is less than activated carbon particle size, and the collection frame includes trapezoidal base, the short side of trapezoidal base be connected with for
The collecting cassette is embedded in interior accepting rack, the seal box is interior for the collecting cassette in non-sampled state to be sealed in,
Seal box includes that box body and lid, box body and lid form confined space after being connected through a screw thread.
2. a kind of radon harvester according to claim 1, it is characterised in that：The collection frame is molded by toughness material.
3. a kind of radon harvester according to claim 2, it is characterised in that：The toughness material is plastics.
4. a kind of radon harvester according to claim 1, it is characterised in that：The trapezoidal base of the collection frame and storage
Frame is integrally formed.
5. a kind of radon harvester according to claim 1, it is characterised in that：The accepting rack be with collection box shaped,
The circular frame of size matching.
6. a kind of radon harvester according to claim 1, it is characterised in that：The cylindric side of the collecting cassette is by aluminium
Material is molded.
7. according to a kind of radon harvester described in claim 1, it is characterised in that：Two axial ends of the collecting cassette are a diameter of
45~60mm, collecting cassette thickness is 7~9mm.
8. a kind of radon harvester according to claim 7, it is characterised in that：The collecting cassette thickness is 7.5mm.
9. a kind of radon harvester according to claim 1, it is characterised in that：The seal box is molded by ferrous material,
The box body cross section and lid cross section of seal box are circle.
10. a kind of radon acquisition method, the method is using one of claim 1-9 described radon harvester, it is characterised in that：Institute
State method specific as follows：
1）Collecting cassette is taken out from seal box and is placed in baking oven, 5-6h is heated under the conditions of 120-130 DEG C；
2）By in the accepting rack of collecting cassette insertion collection frame, then collection frame is put into the closed container equipped with uranium ore, most
Closed container is put into during temperature has been set to 25 DEG C of baking boxs of constant temperature afterwards, starts the collection of radon, acquisition time is 2h；
3）After collection terminates, closed container is opened, collection frame is taken out, then collecting cassette is taken out and put back to close from accepting rack
Jacket interior sealing；
4）Above-mentioned collecting cassette, up to after 3h, is put in BH1936 Low background multiple tracks gamma energy spectrometers by collecting cassette time of repose in the seal box
Probe on, the either axial end face of the collecting cassette is carried out into activated carbon γ measurements close to probe, time of measuring is 300s, obtain
Total γ is counted；
5）The total γ of background for measuring BH1936 Low background multiple tracks gamma energy spectrometers is counted, and time of measuring is 300s,；
6）By above-mentioned steps 4）The total γ for obtaining counts deduction step 5）The total γ of background of acquisition is counted, and obtains total γ net counts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229067.6A CN106873025A (en) | 2017-04-10 | 2017-04-10 | A kind of radon harvester and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229067.6A CN106873025A (en) | 2017-04-10 | 2017-04-10 | A kind of radon harvester and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106873025A true CN106873025A (en) | 2017-06-20 |
Family
ID=59161945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710229067.6A Pending CN106873025A (en) | 2017-04-10 | 2017-04-10 | A kind of radon harvester and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106873025A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519255A (en) * | 2018-04-12 | 2018-09-11 | 福建拓普检测技术有限公司 | A kind of detection method for acquiring radon consistence in soil |
| CN113539542A (en) * | 2021-07-19 | 2021-10-22 | 中国人民解放军火箭军工程大学 | Radon gas enrichment type alpha-ray nuclear battery |
| CN107807380B (en) * | 2017-12-14 | 2023-08-11 | 福建师范大学 | Instrument coefficient scale device and method for radon measurement by activated carbon box |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10258272A (en) * | 1997-03-05 | 1998-09-29 | Fuji Denki Ii I C Kk | Deodorizing and bacteria removing filter apparatus for hot water of bathtub |
| CN102043162A (en) * | 2010-10-20 | 2011-05-04 | 中国人民解放军海军医学研究所 | High-efficiency radon-measuring activated carbon box |
| CN201849227U (en) * | 2010-11-10 | 2011-06-01 | 佟灿 | Multi-purpose combination pen container |
| CN201935837U (en) * | 2010-12-23 | 2011-08-17 | 核工业北京地质研究院 | Activated carbon absorber for collecting radon gas in soil |
| CN203920829U (en) * | 2014-06-24 | 2014-11-05 | 兴化市联发食品有限公司 | A kind of with vegetables treatment hole and the dual-purpose conveying device of automanual discharging |
| CN204126642U (en) * | 2014-09-07 | 2015-01-28 | 河南理工大学 | A kind of colliery radon survey device based on activated carbon box method |
| CN204770636U (en) * | 2015-07-01 | 2015-11-18 | 马鞍山市润启新材料科技有限公司 | Water a packet shallow |
-
2017
- 2017-04-10 CN CN201710229067.6A patent/CN106873025A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10258272A (en) * | 1997-03-05 | 1998-09-29 | Fuji Denki Ii I C Kk | Deodorizing and bacteria removing filter apparatus for hot water of bathtub |
| CN102043162A (en) * | 2010-10-20 | 2011-05-04 | 中国人民解放军海军医学研究所 | High-efficiency radon-measuring activated carbon box |
| CN201849227U (en) * | 2010-11-10 | 2011-06-01 | 佟灿 | Multi-purpose combination pen container |
| CN201935837U (en) * | 2010-12-23 | 2011-08-17 | 核工业北京地质研究院 | Activated carbon absorber for collecting radon gas in soil |
| CN203920829U (en) * | 2014-06-24 | 2014-11-05 | 兴化市联发食品有限公司 | A kind of with vegetables treatment hole and the dual-purpose conveying device of automanual discharging |
| CN204126642U (en) * | 2014-09-07 | 2015-01-28 | 河南理工大学 | A kind of colliery radon survey device based on activated carbon box method |
| CN204770636U (en) * | 2015-07-01 | 2015-11-18 | 马鞍山市润启新材料科技有限公司 | Water a packet shallow |
Non-Patent Citations (2)
| Title |
|---|
| 乐仁昌 等: "氡及其子体水平扩散系数测量研究", 《核技术》 * |
| 江熊主编, 化学工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807380B (en) * | 2017-12-14 | 2023-08-11 | 福建师范大学 | Instrument coefficient scale device and method for radon measurement by activated carbon box |
| CN108519255A (en) * | 2018-04-12 | 2018-09-11 | 福建拓普检测技术有限公司 | A kind of detection method for acquiring radon consistence in soil |
| CN113539542A (en) * | 2021-07-19 | 2021-10-22 | 中国人民解放军火箭军工程大学 | Radon gas enrichment type alpha-ray nuclear battery |
| CN113539542B (en) * | 2021-07-19 | 2024-01-30 | 中国人民解放军火箭军工程大学 | Radon gas enrichment type alpha ray nuclear battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106873025A (en) | A kind of radon harvester and method | |
| Hassan et al. | Radon migration process and its influence factors; review | |
| Forkapic et al. | Correlations between soil characteristics and radioactivity content of Vojvodina soil | |
| CN101609154A (en) | Measure the method for precipitation rate of radon | |
| CN102426379A (en) | Method for measuring radon emanation rate by adopting two-stage method | |
| Kaur et al. | Study of radon/thoron exhalation rate, soil-gas radon concentration, and assessment of indoor radon/thoron concentration in Siwalik Himalayas of Jammu & Kashmir | |
| Harb et al. | Radioactivity levels and soil-to-plant transfer factor of natural radionuclides from protectorate area in Aswan, Egypt | |
| CN103760068A (en) | Method and device for determining diffusion and reduction processes of nitrous oxide in soil | |
| Ye et al. | Simultaneous determination of the radon diffusion coefficient and the free radon production rate from compact porous emanation media | |
| Žunić et al. | High natural radiation exposure in radon spa areas: a detailed field investigation in Niška Banja (Balkan region) | |
| De Simone et al. | Correcting for H2O interference using a RAD7 electrostatic collection-based silicon detector | |
| CN107229080A (en) | A kind of acquisition methods of geochemical well logging neutron absorption gamma spectra | |
| Karadeniz et al. | Dynamic equilibrium of radiocesium with stable cesium within the soil–mushroom system in Turkish pine forest | |
| Pressyanov et al. | Sorption and desorption of radioactive noble gases in polycarbonates | |
| CN206757053U (en) | A kind of radon harvester | |
| Karadeniz et al. | Estimation of vertical migration velocity of 137Cs in the Mount IDA/Kazdagi, Turkey | |
| CN106873023B (en) | A method of air radon consistence is measured using activated charcoal | |
| Yanchao et al. | Study on a new charcoal closed chamber method for measuring radon exhalation rate of building materials | |
| Major | Biochar Application to a colombian savanna oxisol: fate and effect on soil fertility, crop production, nutrient leaching and soil hydrology volume I | |
| Al-Saadi et al. | Measurement of radon and uranium concentrations in the dates and their seeds of different regions in Karbala governorate | |
| De Simone et al. | Using natural radon as a tracer of gasoline contamination | |
| CN203350088U (en) | Compact type radon collector | |
| Canoba et al. | Radon determination by activated charcoal adsorption and liquid scintillation measurement | |
| Abdalla et al. | Radon gas build up using alpha scintillation cell: Experimentally and theoretically | |
| CN102043162B (en) | High-efficiency radon-measuring activated carbon box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |
|
| RJ01 | Rejection of invention patent application after publication |