CN113654841A - Device for quickly sampling tritiated water in air and method for measuring concentration of tritium in air - Google Patents
Device for quickly sampling tritiated water in air and method for measuring concentration of tritium in air Download PDFInfo
- Publication number
- CN113654841A CN113654841A CN202111110375.XA CN202111110375A CN113654841A CN 113654841 A CN113654841 A CN 113654841A CN 202111110375 A CN202111110375 A CN 202111110375A CN 113654841 A CN113654841 A CN 113654841A
- Authority
- CN
- China
- Prior art keywords
- air
- sampling
- tritiated water
- tritium
- concentration
- 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
- 238000005070 sampling Methods 0.000 title claims abstract description 70
- XLYOFNOQVPJJNP-PWCQTSIFSA-N Tritiated water Chemical compound [3H]O[3H] XLYOFNOQVPJJNP-PWCQTSIFSA-N 0.000 title claims abstract description 47
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 title claims abstract description 30
- 229910052722 tritium Inorganic materials 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 22
- 238000004321 preservation Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 238000010186 staining Methods 0.000 claims 1
- 239000003570 air Substances 0.000 description 38
- 238000005259 measurement Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/204—Measuring radiation intensity with scintillation detectors the detector being a liquid
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Molecular Biology (AREA)
- High Energy & Nuclear Physics (AREA)
- Hydrology & Water Resources (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a device for quickly sampling tritiated water in air and a method for measuring the concentration of tritium in air, wherein the device for quickly sampling tritiated water in air comprises: the device comprises a cold conduction rod, a positioning heat-preservation plug, a liquid nitrogen heat-preservation barrel and a positioning pin; the method for measuring the concentration of tritium in the air comprises the following steps: rapidly sampling tritiated water in the air by using the rapid sampling device for tritiated water in the air; measuring mass M and tritium specific activity in the sampled liquid water to be A, and then utilizing a formula C ═ A.RH.P0Eta calculate the activity concentration C of tritiated water in the air at this point. The device for quickly sampling tritiated water in air disclosed by the invention can quickly sample or obtain a sample to sample air tritiated water without depending on electric power; the method for measuring the concentration of tritium in air is carried out based on the device for quickly sampling tritiated water in air, and is simple and easy to operate. The method is suitable for measuring the content of tritium in natural environment and tritium-involved environment.
Description
Technical Field
The invention belongs to the technical field of radiation protection and radiation measurement, and particularly relates to a device for quickly sampling tritiated water in air and a method for measuring the concentration of tritium in air.
Background
With the development of tritium-related technology, the gradual propulsion of tritium-related facilities and the increase of tritium-related experiments in the present year, the tritium safety problem is more and more valued. The measurement of the concentration of tritium gas and tritiated water in workplaces and ambient air is a necessary means for guaranteeing that the exposure dose of tritium operators and the public is within the legal limit. However, the concentration of tritium in the workplace and the ambient air is generally low, and the data cannot be obtained by direct measurement of instruments, so that a sampling measurement mode is generally adopted. The traditional tritiated water sampling mode in the air is divided into an active sampling mode and a passive sampling mode, wherein the active sampling mode generally adopts a sampling pump as a power source to convey air at a sampling point to a condensing device or a bubbler and other collectors for collection at a certain speed, and the passive sampling mode mainly adopts silica gel and other water-absorbing materials to adsorb water vapor in the air for sampling; the active sampling method needs to drive the sampling pump to work through electric power, the device is complex, the sampling pump cannot be used in the scene of non-power supply conditions such as accident conditions or natural environments, the silica gel sampling method does not need power supply, but the water adsorption speed is low, the sampling time is long (usually several hours), and the processes of distillation sample preparation and the like are needed after sampling is finished, so that the efficiency is low.
Therefore, a device capable of rapidly sampling tritiated water in air is needed, and the current situation that the tritiated water in air is sampled by electric power or sampling is slow is solved.
Disclosure of Invention
In view of the above, the invention provides a device for rapidly sampling tritiated water in air, which overcomes the defects that a silica gel sampling mode in the prior art is slow in speed and an electric refrigeration sampling device depends on electric power.
In order to achieve the purpose, the invention adopts the following technical scheme: a device for rapidly sampling tritiated water in air, comprising: the device comprises a cold conduction rod, a positioning heat-preservation plug, a liquid nitrogen heat-preservation barrel and a positioning pin; the cold guide rod penetrates through the positioning heat-insulation plug to be inserted into the liquid nitrogen heat-insulation barrel and is fixed by the positioning pin; the positioning heat-preservation plug is covered on the opening of the liquid nitrogen heat-preservation barrel; the liquid nitrogen heat-preserving barrel is hollow and is provided with an opening at the upper end, and the inner barrel wall and the outer barrel wall are hollow; the positioning pin is fixed at the center of the bottom in the liquid nitrogen heat-preserving barrel.
Preferably, the cold conducting rod is a high-purity copper material, and the purity is more than or equal to 99.9%; the positioning heat-insulating plug is made of polytetrafluoroethylene material; the liquid nitrogen heat-preserving barrel and the positioning pin are both made of 316L stainless steel materials.
Preferably, the surface of the cold conducting rod is polished, and the surface roughness Ra is less than or equal to 0.1 mu m.
A method for measuring the concentration of tritium in air, comprising:
s1: rapidly sampling tritiated water in the air by using the rapid sampling device for tritiated water in the air;
s2: calculation of tritium concentration in air
Measuring the mass M and tritium specific activity A in the sampled liquid water; and then calculating the activity concentration C of tritiated water in the air at the point as follows:
C＝A·RH·P0·η
in the formula, P0The absolute pressure of air saturated vapor corresponding to the temperature T is unit Pa; eta is a proportional coefficient and takes a value of 8.04 multiplied by 10-3g/m3(ii) a RH is the relative humidity at the sampling point.
Preferably, the step S1 includes:
s11: the method comprises the following steps of (1) mounting a tritiated water rapid sampling device in the air, carrying the tritiated water rapid sampling device to a place needing sampling, and recording the air temperature T and the relative humidity RH at the sampling point;
s12: standing the tritiated water rapid sampling device in the air for a period of time, collecting frost on the surface of the cold guide rod by using a sample bottle after the upper end of the cold guide rod is frosted, and naturally standing the sample bottle until the frost is dissolved into liquid water;
s13: after sampling is finished, wiping the surface layer of the copper rod by using dust-free cloth to prevent tritiated water from polluting the cold conducting rod, so that the measurement result of the next sampling point position has deviation;
preferably, in the step S2, the tritium specific activity of the sampled liquid water is measured as a by using a liquid scintillation counter.
The invention has the beneficial effects that: the invention discloses a device for quickly sampling tritiated water in air, wherein the device for quickly sampling tritiated water in air is quicker than a traditional silica gel sampling mode, and distillation and sample preparation processes are not needed; compared with an electric refrigeration sampling device and an active sampling device, the device is simpler and more convenient, does not need power supply, and is suitable for quickly sampling tritiated water in the air; the method for measuring the concentration of tritium in air is carried out based on the device for quickly sampling tritiated water in air, and is simple and easy to operate.
Drawings
FIG. 1 is a schematic structural diagram of a device for rapidly sampling tritiated water in air.
In the figure: 1. a cold conducting rod 2, a positioning heat-insulating plug 3, a liquid nitrogen heat-insulating barrel 4 and a positioning pin.
Detailed Description
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
The invention is described in detail below with reference to the figures and specific embodiments.
A device for rapidly sampling tritiated water in air as shown in fig. 1, which comprises: the device comprises a cold conducting rod 1, a positioning heat-insulating plug 2, a liquid nitrogen heat-insulating barrel 3 and a positioning pin 4; the cold conducting rod 1 penetrates through the positioning heat-insulating plug 2 to be inserted into the liquid nitrogen heat-insulating barrel 3 and is fixed by the positioning pin 4; the positioning heat-preservation plug 2 is covered on an opening of the liquid nitrogen heat-preservation barrel 3; the liquid nitrogen heat-preserving barrel 3 is a hollow barrel with an opening at the upper end, the inner barrel wall and the outer barrel wall are hollow, and a getter is arranged between the inner barrel wall and the outer barrel wall; the positioning pin 4 is fixed at the center of the bottom in the liquid nitrogen heat-preserving barrel 3.
As an embodiment, the cold guide rod 1 is a high-purity copper material, and the purity is more than or equal to 99.9 percent; the positioning heat-preservation plug 2 is made of polytetrafluoroethylene material; the liquid nitrogen heat-preserving barrel 3 and the positioning pin 4 are both made of 316L stainless steel materials.
As an example, the surface of the cold conducting rod 1 is polished, and the surface roughness Ra is less than or equal to 0.1 μm.
A method of measuring tritium concentration in air, the method comprising:
s1: rapidly sampling tritiated water in air by using the rapid sampling device for tritiated water in air shown in FIG. 1;
s11: the method comprises the following steps of (1) mounting a tritiated water rapid sampling device in the air, carrying the tritiated water rapid sampling device to a place needing sampling, and recording the air temperature T and the relative humidity RH at the sampling point;
s12: standing the tritiated water rapid sampling device in the air for a period of time, collecting frost on the surface of the cold guide rod by using a sample bottle after the upper end of the cold guide rod is frosted, and naturally standing the sample bottle until the frost is dissolved into liquid water;
s13: after sampling is finished, wiping the surface layer of the copper rod by using dust-free cloth to prevent tritiated water from polluting the cold conducting rod, so that the measurement result of the next sampling point position has deviation;
s2: calculation of tritium concentration in air
Measuring the mass M and tritium specific activity A in the sampled liquid water; and then calculating the activity concentration C of tritiated water in the air at the point as follows:
C＝A·RH·P0·η
in the formula, P0The absolute pressure of air saturated vapor corresponding to the temperature T is unit Pa; eta is a proportional coefficient and takes a value of 8.04 multiplied by 10-3g/m3(ii) a RH is the relative humidity at the sampling point, and a liquid scintillation counter can be used to measure the tritium specific activity of the sampled liquid water as A.
As an embodiment, the cold guide rod 1 is made of copper, the diameter is 30mm, and the length is 535 mm; the height of the inside of the liquid nitrogen heat-preserving barrel 3 is 255mm, the diameter is 150mm, the effective volume is 4.3L, and the diameter and the height of the outer shell of the liquid nitrogen heat-preserving barrel 3 are 200mm and 310 mm; the diameter of the positioning pin 4 is 6mm, and the height thereof is 60 mm. Under the conditions that the temperature is 24 ℃ and the relative air humidity is 55%, a water vapor sample in air with the volume of more than or equal to 3mL can be obtained within 30min of sampling time.
Claims (6)
1. A device for rapidly sampling tritiated water in air is characterized by comprising: the device comprises a cold conduction rod (1), a positioning heat-preservation plug (2), a liquid nitrogen heat-preservation barrel (3) and a positioning pin (4); the cold conducting rod (1) penetrates through the positioning heat-insulating plug (2) to be inserted into the liquid nitrogen heat-insulating barrel (3) and is fixed by the positioning pin (4); the positioning heat-preservation plug (2) is covered on an opening of the liquid nitrogen heat-preservation barrel (3); the liquid nitrogen heat-preserving barrel (3) is hollow and is provided with an opening at the upper end, the inner barrel wall and the outer barrel wall are hollow, and a getter is arranged between the inner barrel wall and the outer barrel wall; the positioning pin (4) is fixed at the center of the bottom in the liquid nitrogen heat-preserving barrel (3).
2. The device for rapidly sampling tritiated water in air according to claim 1, characterized in that the cold conducting rod (1) is a high-purity copper material, and the purity is more than or equal to 99.9%; the positioning heat-insulating plug (2) is made of polytetrafluoroethylene material; the liquid nitrogen heat-preserving barrel (3) and the positioning pin (4) are both made of 316L stainless steel materials.
3. The device for rapidly sampling the tritiated water in the air as claimed in claim 1, wherein the surface of the cold conducting rod (1) is polished, and the surface roughness Ra is less than or equal to 0.1 μm.
4. A method for measuring the concentration of tritium in air, comprising:
s1: the tritiated water in air is rapidly sampled by using the tritiated water rapid sampling device in air as claimed in any one of claims 1-2;
s2: calculation of tritium concentration in air
Measuring the mass M and tritium specific activity A in the sampled liquid water; and then calculating the activity concentration C of tritiated water in the air at the point as follows:
C＝A·RH·P0·η
in the formula, P0The absolute pressure of air saturated vapor corresponding to the temperature T is unit Pa; eta is a proportional coefficient and takes a value of 8.04 multiplied by 10-3g/m3(ii) a RH is the relative humidity at the sampling point.
5. A method of measuring a concentration of tritium in air according to claim 3, characterized in that the step S1 includes:
s11: the method comprises the following steps of (1) mounting a tritiated water rapid sampling device in the air, carrying the tritiated water rapid sampling device to a place needing sampling, and recording the air temperature T and the relative humidity RH at the sampling point;
s12: standing the tritiated water rapid sampling device in the air for a period of time, collecting frost on the surface of the cold guide rod by using a sample bottle after the upper end of the cold guide rod is frosted, and naturally standing the sample bottle until the frost is dissolved into liquid water;
s13: use dustless cloth to clean the bar copper top layer after the sample is accomplished, prevent that tritiated water from staining and leading cold stick, lead to next sample point position measuring result to appear the deviation.
6. A method for measuring concentration of tritium in air according to claim 3, characterized in that in step S2, a liquid scintillation counter is used to measure tritium specific activity A of sampled liquid water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110375.XA CN113654841A (en) | 2021-09-18 | 2021-09-18 | Device for quickly sampling tritiated water in air and method for measuring concentration of tritium in air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110375.XA CN113654841A (en) | 2021-09-18 | 2021-09-18 | Device for quickly sampling tritiated water in air and method for measuring concentration of tritium in air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113654841A true CN113654841A (en) | 2021-11-16 |
Family
ID=78484035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111110375.XA Pending CN113654841A (en) | 2021-09-18 | 2021-09-18 | Device for quickly sampling tritiated water in air and method for measuring concentration of tritium in air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113654841A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115394466A (en) * | 2022-08-23 | 2022-11-25 | 中国原子能科学研究院 | Tritiated water vapor collecting device |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3610748A1 (en) * | 1986-03-29 | 1987-10-01 | Reichert Optische Werke Ag | Apparatus for the cryofixation of stationary objects by an intensely cooled highly polished solid-body surface, in particular a metallic mirror |
| JPH01239741A (en) * | 1988-03-18 | 1989-09-25 | Nippon Denshi Eng Kk | Sample freezing device |
| JPH10104138A (en) * | 1996-09-30 | 1998-04-24 | Shimadzu Corp | Apparatus for analyzing cooled sample |
| US20090301228A1 (en) * | 2006-07-04 | 2009-12-10 | Yves Baron | Method for automatically sampling tritium in the water vapor in air |
| DE102011007768A1 (en) * | 2011-04-20 | 2012-10-25 | Agilent Technologies Inc. | Cooling system for cooling sample of sample container in sample injector of sample separation device, comprises primary cooling unit for adjusting primary temperature in sample chamber, which has sample container with sample |
| CN106134450B (en) * | 2009-01-20 | 2013-02-27 | 北京卫星制造厂 | A kind of field high efficiency air tritiated water steam-condensation gathering-device |
| CN103547903A (en) * | 2010-08-18 | 2014-01-29 | 压力生物科技公司 | Flow-through high hydrostatic pressure microfluidic sample preparation device and related methods therefor |
| CN103728163A (en) * | 2014-01-16 | 2014-04-16 | 中国工程物理研究院核物理与化学研究所 | Fast sampling system for full tritium in gas |
| US20150289500A1 (en) * | 2012-12-10 | 2015-10-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Cryogenic storage device and method for operating same |
| CN105842725A (en) * | 2016-03-24 | 2016-08-10 | 山东省核与辐射安全监测中心 | Method for detecting specific activity of tritiated steam in air |
| CN106018003A (en) * | 2016-05-20 | 2016-10-12 | 中国科学院上海应用物理研究所 | Sampling device and measurement method for multi-form tritium in atmosphere around nuclear facility |
| CN106596203A (en) * | 2017-02-27 | 2017-04-26 | 中国工程物理研究院核物理与化学研究所 | Portable sampling device used for air tritiated water |
| JP2017090471A (en) * | 2017-02-22 | 2017-05-25 | 株式会社島津製作所 | Sample cooling device, auto-sampler provided with the same, and sample cooling method |
| CN106840766A (en) * | 2017-01-06 | 2017-06-13 | 中国工程物理研究院核物理与化学研究所 | A kind of sampling method for air tritiated water |
| CN110208042A (en) * | 2019-06-04 | 2019-09-06 | 中国工程物理研究院核物理与化学研究所 | It is a kind of biology sample in tissue free water tritium sampler |
| CN113075014A (en) * | 2021-02-07 | 2021-07-06 | 中国地质科学院水文地质环境地质研究所 | Tritium analysis sample preparation system |
-
2021
- 2021-09-18 CN CN202111110375.XA patent/CN113654841A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3610748A1 (en) * | 1986-03-29 | 1987-10-01 | Reichert Optische Werke Ag | Apparatus for the cryofixation of stationary objects by an intensely cooled highly polished solid-body surface, in particular a metallic mirror |
| JPH01239741A (en) * | 1988-03-18 | 1989-09-25 | Nippon Denshi Eng Kk | Sample freezing device |
| JPH10104138A (en) * | 1996-09-30 | 1998-04-24 | Shimadzu Corp | Apparatus for analyzing cooled sample |
| US20090301228A1 (en) * | 2006-07-04 | 2009-12-10 | Yves Baron | Method for automatically sampling tritium in the water vapor in air |
| CN106134450B (en) * | 2009-01-20 | 2013-02-27 | 北京卫星制造厂 | A kind of field high efficiency air tritiated water steam-condensation gathering-device |
| CN103547903A (en) * | 2010-08-18 | 2014-01-29 | 压力生物科技公司 | Flow-through high hydrostatic pressure microfluidic sample preparation device and related methods therefor |
| DE102011007768A1 (en) * | 2011-04-20 | 2012-10-25 | Agilent Technologies Inc. | Cooling system for cooling sample of sample container in sample injector of sample separation device, comprises primary cooling unit for adjusting primary temperature in sample chamber, which has sample container with sample |
| US20150289500A1 (en) * | 2012-12-10 | 2015-10-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Cryogenic storage device and method for operating same |
| CN103728163A (en) * | 2014-01-16 | 2014-04-16 | 中国工程物理研究院核物理与化学研究所 | Fast sampling system for full tritium in gas |
| CN105842725A (en) * | 2016-03-24 | 2016-08-10 | 山东省核与辐射安全监测中心 | Method for detecting specific activity of tritiated steam in air |
| CN106018003A (en) * | 2016-05-20 | 2016-10-12 | 中国科学院上海应用物理研究所 | Sampling device and measurement method for multi-form tritium in atmosphere around nuclear facility |
| CN106840766A (en) * | 2017-01-06 | 2017-06-13 | 中国工程物理研究院核物理与化学研究所 | A kind of sampling method for air tritiated water |
| JP2017090471A (en) * | 2017-02-22 | 2017-05-25 | 株式会社島津製作所 | Sample cooling device, auto-sampler provided with the same, and sample cooling method |
| CN106596203A (en) * | 2017-02-27 | 2017-04-26 | 中国工程物理研究院核物理与化学研究所 | Portable sampling device used for air tritiated water |
| CN110208042A (en) * | 2019-06-04 | 2019-09-06 | 中国工程物理研究院核物理与化学研究所 | It is a kind of biology sample in tissue free water tritium sampler |
| CN113075014A (en) * | 2021-02-07 | 2021-07-06 | 中国地质科学院水文地质环境地质研究所 | Tritium analysis sample preparation system |
Non-Patent Citations (7)
| Title |
|---|
| J.E.PHILIPS;赵亚民;: "冷冻收集气流中氚化水的效率", 核农学通报 * |
| 丁洪深;赵新景;刘晓林;: "空气冷凝法对氚化水采集与测量的实验研究", 中国辐射卫生 * |
| 李华;: "空气中不同形态氚取样方法", 辐射防护通讯 * |
| 洪永侠;程瑛;漆明森;吴甜甜;: "气载氚监测仪现场校准技术", 核化学与放射化学 * |
| 程丰民;夏冰;丁洪深;罗磊;吕蕴海;: "空气中氚的测量方法探讨", 中国辐射卫生 * |
| 谢波;翁葵平;侯建平;古梅;: "聚变堆液态包层提氚鼓泡器的概念设计", 核聚变与等离子体物理 * |
| 赵亚民,周洪杰: "氚化水蒸气硅胶取样方法研究", 核电子学与探测技术 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115394466A (en) * | 2022-08-23 | 2022-11-25 | 中国原子能科学研究院 | Tritiated water vapor collecting device |
| CN115394466B (en) * | 2022-08-23 | 2023-12-12 | 中国原子能科学研究院 | Tritiated water vapor collecting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102788718A (en) | Passive sampler for polycyclic aromatic hydrocarbon in indoor air and sampling testing method thereof | |
| CN113654841A (en) | Device for quickly sampling tritiated water in air and method for measuring concentration of tritium in air | |
| CN111879793B (en) | Tritium gas adsorption performance experimental device and method thereof | |
| CN102253168B (en) | Method and apparatus for producing mercury vapor with standard concentration | |
| CN211236312U (en) | A rainwater collection device for meteorological monitoring | |
| CN110031367A (en) | A kind of frozen soil steam migration monitoring device | |
| CN203811496U (en) | Weight-method physical adsorption instrument | |
| CN106840766A (en) | A kind of sampling method for air tritiated water | |
| CN202709542U (en) | Refrigerating system of cold-mirror type dew point tester | |
| CN101839878A (en) | Method and device for analyzing trace gaseous impurities in high-purity gas (or electron gas) | |
| CN101856630B (en) | Superfluidhelium constant temperature bath device | |
| CN219200963U (en) | Sewage on-line monitoring sampling device | |
| CN108535763B (en) | Radon activity absolute measuring device | |
| CN206420683U (en) | A kind of portable sampling equipment for air tritiated water | |
| CN212111215U (en) | PET film sample thermal shrinkage performance detection device | |
| CN104932003A (en) | A movable type mass-flow total-tritium rapid sampling apparatus | |
| CN219589988U (en) | Quick sampling device of heating medium | |
| CN220542566U (en) | Constant temperature constant current gas sampler of double-circuit sampling | |
| CN218470668U (en) | Movable high-precision air pollution monitoring device capable of utilizing solar energy for power supply | |
| CN214067059U (en) | Electric power monitoring device based on atmospheric pollution control | |
| CN206450642U (en) | A kind of recharging type sulfur hexafluoride decomposition product chromatogram on-line detector | |
| CN107300526A (en) | The equipment that a kind of use atomic absorption spectrophotometry monitors water quality | |
| CN219179379U (en) | Water quality pollutant detector | |
| CN211697613U (en) | Hollow glass dew point instrument | |
| CN110632213A (en) | Method for detecting content of acetylene in liquid oxygen |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211116 |