CN103323320A - Radionuclide enrichment system in seawater based on graphene oxide - Google Patents
Radionuclide enrichment system in seawater based on graphene oxide Download PDFInfo
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- CN103323320A CN103323320A CN201310244621XA CN201310244621A CN103323320A CN 103323320 A CN103323320 A CN 103323320A CN 201310244621X A CN201310244621X A CN 201310244621XA CN 201310244621 A CN201310244621 A CN 201310244621A CN 103323320 A CN103323320 A CN 103323320A
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Abstract
The invention discloses a radionuclide enrichment system in seawater based on graphene oxide, relating to radionuclides in the sweater. The radionuclide enrichment system is provided with a seawater collection unit, an impurity removing unit, a flow meter unit and an enricher unit, wherein a seawater outlet of the seawater collection unit is connected with an inlet of the impurity removing unit, an outlet of the impurity removing unit is connected with the inlet of the enricher unit through the flow meter unit, and the enricher unit is at least one enrichment device filled with a graphene oxide material unit. A first sweater flow rate control unit can be arranged between the seawater collection unit and the impurity removing unit, and a second seawater flow rate control unit can be arranged between the impurity removing unit and the flow meter unit. The radionuclide enrichment system can effectively solve radionuclide enrichment in the seawater and the problems of complex process, long time, low efficiency and the like of an analysis method. Fast enrichment of the radionuclides in the seawater can be realized, and the timeliness of the radionuclide enrichment and treatment in the seawater can be effectively upgraded.
Description
Technical field
The present invention relates to radioactive nuclide in the seawater, especially relate to a kind of based on radioactive nuclide enrichment system in the seawater of graphene oxide.
Background technology
The concentration of radioactive nuclide is very low in the seawater, must carry out by enrichment system absorption, the enrichment of radioactive nuclide, just can obtain the higher sample of radionuclide amount, thereby provides the basis for the measurement of radioactive nuclide in the seawater.The fast enriching of radioactive nuclide is to improve Marine Radioactivity monitoring efficient, the nuclear emergency preparation of reduction ocean and the necessary behavior of response time in the seawater, for in time measuring radionuclide concentration in the seawater, understand the migration situation that is distributed in of radioactive nuclide in the ocean, the decision-making of alleviating action and urgent radiation protection action for the detecting of ocean nuclear accident, evaluation and accident control provides foundation.
On March 11st, 2011,9.0 grades of violent earthquakes of Richter scale and strong tsunami occur in northeastern Japan section, and then the Fukushima nuclear power station radiomaterial leakage accident that causes causes global concern.After nuclear accident occured, radiomaterial was discharged in the environment in a large number, Environment Ecological Safe and public health has been produced impact, and spread to the whole world by approach such as ocean, atmosphere.Radionuclide concentration in the Quick Measurement seawater, diffusion and the migration process of assessment radiomaterial in the ocean become important research contents.Set up fast enriching and the analytical approach of marine environment radioactive nuclide, develop that the radioactive nuclide enrichment method just seems particularly important and urgent in the seawater fast under the background of Fukushima nuclear crisis.
The enrichment method of radioactive nuclide is divided into two kinds in the seawater:
(1) radiochemistry disposal route.The method need to gather a large amount of seawater samples, in earlier stage processes enriched sample by radiochemistry, and flowchart process is numerous, the time is long, efficient is low.
(2) directly filter enrichment method.Utilize the radioactive nuclide in the direct adsorbing seawater of enriching column.Used sorbing material generally is ammonium phosphomolybdate (AMP) or ferrocyanide, utilizes them to caesium-137(
137Cs) characterization of adsorption reaches absorption and enrichment purpose.But because there are the shortcomings such as unicity or efficient are low in these enrichment materials to nucleic, the range of application of the method is also very limited.
Along with the fast development that China's nuclear energy and nuclear technology are utilized, study the fast enriching method of multiple radioactive nuclide in the seawater, improve the actual effect of whole processing and measurement procedure, become the active demand in the environmental monitoring, have very important significance.
Summary of the invention
The object of the invention is to the problems such as numerous for the process that exists in radioactive nuclide enrichment and the analytical approach in the existing seawater, that the time is long, efficient is low, the fast enriching that can realize radioactive nuclide in the seawater is provided, effectively promote to radioactive nuclide enrichment in the seawater with process ageing a kind of based on radioactive nuclide enrichment system in the seawater of graphene oxide.
The present invention is provided with seawater collecting unit, impurity clearing cell, flow meter unit and enricher unit, the seawer outlet of described seawater collecting unit connects the entrance of impurity clearing cell, the outlet of impurity clearing cell is connected through the entrance of flow meter unit with the enricher unit, and the enriching apparatus of graphene oxide material cell is loaded at least one in described enricher unit.
Between seawater collecting unit and impurity clearing cell, can be provided with the 1st seawater velocity control module, between impurity clearing cell and flow meter unit, can be provided with the 2nd seawater velocity control module.
Described seawater collecting unit can adopt the equipment such as lifting pump or submersible pump to form.
Described graphene oxide material cell can be comprised of dissimilar grapheme material, and described dissimilar grapheme material can be at least a in graphene nanometer sheet, Nano graphite powder, single-layer graphene powder, mono-layer graphite oxide alkene, the graphene oxide quantum dot etc.
Described impurity clearing cell can adopt at least 1 device of removing particle impurity in the seawater.
Described flow meter unit is mainly used in seawater velocity is measured.
Described seawater velocity control module is mainly used in seawater velocity is controlled, and has the adaptive stabilizing flow rate function.
Compare with analytical approach with radioactive nuclide enrichment in the existing seawater, the present invention efficiently solves the problems such as the radioactive nuclide enrichment is numerous with the process of analytical approach existence in the existing seawater, the time is long, efficient is low, can realize the fast enriching to radioactive nuclide in the seawater, effectively promote radioactive nuclide enrichment in the seawater ageing with processing.
Description of drawings
Fig. 1 is that the structure of the embodiment of the invention forms schematic diagram.
In Fig. 1, respectively be labeled as: 1, seawater collecting unit; 2, the 1st seawater velocity control module; 3, impurity clearing cell; 4, water pipe; 5, flow meter unit; 6, enricher unit; 7, graphene oxide material cell; 8, the 2nd seawater velocity control module.
Embodiment
The present invention is described further in connection with accompanying drawing for following examples.
Referring to Fig. 1, the embodiment of the invention is provided with seawater collecting unit 1, impurity clearing cell 3, flow meter unit 5 and enricher unit 6, the seawer outlet of described seawater collecting unit 1 connects the entrance of impurity clearing cell 3, the outlet of impurity clearing cell 3 is connected through the entrance of flow meter unit 5 with enricher unit 6, and the enriching apparatus of graphene oxide material cell 7 is loaded at least one in described enricher unit 6.
Between seawater collecting unit 1 and impurity clearing cell 3, the 1st seawater velocity control module 2 can be provided with, between impurity clearing cell 3 and flow meter unit 5, the 2nd seawater velocity control module 8 can be provided with.
Described seawater collecting unit 1 can adopt the equipment such as lifting pump or submersible pump to form.
Described graphene oxide material cell 7 can be comprised of dissimilar grapheme material, and described dissimilar grapheme material can be at least a in graphene nanometer sheet, Nano graphite powder, single-layer graphene powder, mono-layer graphite oxide alkene, the graphene oxide quantum dot etc.
Described impurity clearing cell 3 can adopt at least 1 device of removing particle impurity in the seawater.
Described flow meter unit 5 is mainly used in seawater velocity is measured.
In Fig. 1, mark 4 is water pipe.
According to embodiments of the invention, seawater is removed through impurity, behind seawater velocity control module and the accurate control of flow meter unit seawater velocity, is transported to the enricher unit and carries out automatic nucleic enrichment by the graphene oxide material cell.
According to embodiments of the invention, rely on continental rise, ship base laboratory to operate based on radioactive nuclide enrichment system in the seawater of graphene oxide.
According to embodiments of the invention, the graphene oxide material cell can be mono-layer graphite oxide alkene, graphene oxide quantum dot, also can be graphene nanometer sheet, Nano graphite powder, single-layer graphene powder.The graphene oxide material cell is comprised of above-mentioned one or more materials.For simplicity, this paper only introduces the situation that adopts same material.
According to embodiments of the invention, before the impurity clearing cell can be placed on flowmeter, also can be placed on flowmeter after.
Below provide the workflow of the embodiment of the invention:
Seawater is through after the acquisition system, by seawater velocity control module control seawater velocity, behind the particle impurity in the impurity clearing cell removing seawater, again by behind flow control and the accurate coutroi velocity of stabilising arrangement, enter the enricher unit, by the radioactive nuclide in the graphene oxide unit enriching seawater.
Wherein, the seawater velocity control module has the function of adaptive stabilizing seawater velocity, the change in flow that can the effective compensation variation in water pressure causes.
The impurity clearing cell namely can be removed the particle impurity of single particle size, also can remove according to demand the particle impurity of different-grain diameter, can effectively reduce like this that impurity provides the bioaccumulation efficiency of graphene oxide unit to the impact of enricher unit in the seawater.
The graphene oxide unit can according to the different radioactive nuclide of graphene oxide material type enrichment, need the bioaccumulation efficiency of graphene oxide is carried out scale when the enrichment radioactive nuclide simultaneously.
Claims (7)
1. one kind based on radioactive nuclide enrichment system in the seawater of graphene oxide, it is characterized in that being provided with seawater collecting unit, impurity clearing cell, flow meter unit and enricher unit, the seawer outlet of described seawater collecting unit connects the entrance of impurity clearing cell, the outlet of impurity clearing cell is connected through the entrance of flow meter unit with the enricher unit, and the enriching apparatus of graphene oxide material cell is loaded at least one in described enricher unit.
2. a kind of based on radioactive nuclide enrichment system in the seawater of graphene oxide as claimed in claim 1, it is characterized in that between seawater collecting unit and impurity clearing cell, being provided with the 1st seawater velocity control module.
3. a kind of based on radioactive nuclide enrichment system in the seawater of graphene oxide as claimed in claim 1, it is characterized in that between impurity clearing cell and flow meter unit, being provided with the 2nd seawater velocity control module.
4. a kind of based on radioactive nuclide enrichment system in the seawater of graphene oxide as claimed in claim 1, it is characterized in that described seawater collecting unit adopts lifting pump or submersible pump.
5. a kind of based on radioactive nuclide enrichment system in the seawater of graphene oxide as claimed in claim 1, it is characterized in that described graphene oxide material cell is comprised of dissimilar grapheme material.
6. a kind of based on radioactive nuclide enrichment system in the seawater of graphene oxide as claimed in claim 5, it is characterized in that described dissimilar grapheme material is at least a in graphene nanometer sheet, Nano graphite powder, single-layer graphene powder, mono-layer graphite oxide alkene, the graphene oxide quantum dot.
7. a kind of based on radioactive nuclide enrichment system in the seawater of graphene oxide as claimed in claim 1, it is characterized in that described impurity clearing cell adopts at least 1 device of removing particle impurity in the seawater.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913367A (en) * | 2014-03-25 | 2014-07-09 | 国家海洋局第三海洋研究所 | System for quickly enriching multiple nuclides in water body |
| CN104406820A (en) * | 2014-11-21 | 2015-03-11 | 陆地 | Portable device and method for radioactive element enrichment sampling |
| CN109298437A (en) * | 2018-09-06 | 2019-02-01 | 国家海洋局第海洋研究所 | The emergency method for fast measuring of ocean scene radionuclide caesium -137, caesium -134 |
| CN109975853A (en) * | 2019-04-09 | 2019-07-05 | 自然资源部第三海洋研究所 | The method of rapid survey marine organism radionuclide |
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| CN1214026A (en) * | 1996-03-08 | 1999-04-14 | 美国3M公司 | Adsorbent for cesium ion and method or making and using |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913367A (en) * | 2014-03-25 | 2014-07-09 | 国家海洋局第三海洋研究所 | System for quickly enriching multiple nuclides in water body |
| CN104406820A (en) * | 2014-11-21 | 2015-03-11 | 陆地 | Portable device and method for radioactive element enrichment sampling |
| CN109298437A (en) * | 2018-09-06 | 2019-02-01 | 国家海洋局第海洋研究所 | The emergency method for fast measuring of ocean scene radionuclide caesium -137, caesium -134 |
| CN109975853A (en) * | 2019-04-09 | 2019-07-05 | 自然资源部第三海洋研究所 | The method of rapid survey marine organism radionuclide |
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Application publication date: 20130925 |