CN206074593U - Novel DGT device - Google Patents
Novel DGT device Download PDFInfo
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- CN206074593U CN206074593U CN201620472081.XU CN201620472081U CN206074593U CN 206074593 U CN206074593 U CN 206074593U CN 201620472081 U CN201620472081 U CN 201620472081U CN 206074593 U CN206074593 U CN 206074593U
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- layering
- support column
- snap rings
- heavy metal
- filter membrane
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Abstract
The utility model relates to a DGT technical field especially relates to a novel DGT device. The device includes support column, upper and lower base and a plurality of layering snap rings, upper and lower base be connected with the cylinder support column upper and lower end through the built-in spiral in middle part, a plurality of layering snap rings be hollow circle form to can regulate and control even the cup jointing on the support column of nut through setting up respectively, a plurality of layering snap rings and upper and lower base's surface on set up the one deck filter membrane, the filter membrane on be provided with the heavy metal adsorption protection film. This novel DGT device can detect the content of the different degree of depth heavy metals in the soil, and is the normal position detection, can not have the interference ion to get into, and it is big to have overcome the soil detection content sampling degree of difficulty in the past, and equipment cost is high, can not real-time supervision scheduling shortcoming, makes the device that detects heavy metal content in the soil simpler, high-efficient and science.
Description
Technical field
This utility model is related to DGT technical fields, more particularly to a kind of new DGT devices.
Background technology
Diffusion thin film technique (Diffusive Gradients in Thin Films, DGT) is 1994 by Britain
Scientist Davison and a sky invention.The technology is a kind of passive sampling technology in situ, can not affect mother solution concentration
It is online with the premise of surrounding to collect target monitoring material, which overcome in traditional analysis due to sampling, process with
The difficulty of form generation change during preservation.
DGT technologies are compared with traditional analysis with advantages below：
1) can on-line analyses detection
2) mean concentration of a period of time is determined, plays real-time monitoring effect
3) determine the object of multi-form
4) enrichment times height (50-1000)
5) it is simple to operate, low cost.
It is Fick (fick) First Law of Diffusion that the principle of the technical basis is, by specific to passing through in special time
The target analytes of the diffusion barrier of thickness carry out measurement calculating, so as to accurately obtain the concentration of target analytes.By phenanthrene
Gram law can extrapolate analyte concentration formula in calculating solution, and wherein C is the concentration of analyte in solution；M is attractive gel
The quality of upper analyte；Thickness of the Δ g for diffusion gel；Diffusion coefficients of the D for analyte；T is the time of deposition；A is effective
Diffusion area.
The method of at present heavy metal in soil detection mainly has spectrographic method, electrochemical method etc., its detection method exist from
Son interference, needs soil sampling, pre-treatment, and equipment cost it is expensive the problems such as.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of new DGT dresses
Put.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of new DGT devices, the device include support column, Up/down base and multiple layering snap rings, and described is upper and lower
Base is connected with cylindrical body supports post upper and lower side by the built-in spiral in middle part, and described multiple layering snap rings are hollow round shape,
And be uniformly socketed on the support columns by arranging controllable nut respectively, described multiple layering snap rings are outer with Up/down base
One metafiltration film is set on surface, heavy metal adsorption protecting film on described filter membrane, is provided with.
Used as further improving, described heavy metal adsorption protecting film is arranged on filter membrane by surface adhesion gel-like glue
On, and the aperture for adhering to is more than 0.45 μm.
Used as further improving, described support column, Up/down base and multiple layering snap rings are PVDF materials and make.
Used as further improving, described support column is cylindrical shape, and a diameter of 9mm is highly 1m, and described is upper and lower
Base is cylindrical shape, and a diameter of 10mm, thickness are 1mm, and described layering Snap ring diameter is 10mm, and width is 1mm, quantity
For 4.
Due to adopting above-mentioned technical proposal, the new DGT devices can detect the content of different depth heavy metal in soil,
And be in situ detection, interfering ion entrance is not had, conventional Soil K+adsorption content sampling difficulty is overcome greatly, equipment cost is high,
The shortcomings of being unable to real-time monitoring, makes the device of detection heavy metal in soil content simpler, efficiently and science.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings specific embodiment of the present utility model is made a detailed explanation.
As shown in figure 1, a kind of new DGT devices, the device includes support column 1, Up/down base 2 and 4 layering snap rings
3, described support column 1 is cylindrical shape, and a diameter of 9mm is highly 1m, and described Up/down base 2 is cylindrical shape, directly
Footpath is 10mm, and thickness is 1mm, described 3 a diameter of 10mm of layering snap ring, and width is 1mm, during described Up/down base 2 passes through
The built-in spiral in portion is connected with 1 upper and lower side of cylindrical body supports post, and 4 described layering snap rings 3 are hollow round shape, and are passed through respectively
Arrange controllable nut to be uniformly socketed on support column 1, set on described 4 layering snap rings 3 and the outer surface of Up/down base 2
A metafiltration film 4 is put, by surface adhesion gel-like glue setting heavy metal adsorption protecting film on described filter membrane 4, and adhere to
Aperture is more than 0.45 μm.
Described support column 1, Up/down base 2 and 4 layering snap rings 3 are PVDF materials and make.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
Equivalent structure or equivalent flow conversion that every utilization this utility model description and accompanying drawing content are made, or directly or indirectly transport
Used in other related technical fields, it is included in the same manner in scope of patent protection of the present utility model.
Claims (2)
1. a kind of new DGT devices, the device include support column (1) and Up/down base (2), and described Up/down base (2) leads to
Cross the built-in spiral in middle part to be connected with cylindrical body supports post (1) upper and lower side, it is characterised in that：The device also includes multiple layering cards
Ring (3), described multiple layering snap rings (3) are hollow round shape, and are uniformly socketed in by arranging controllable nut respectively
On dagger (1), a metafiltration film (4) is set on the outer surface of described multiple layering snap rings (3) and Up/down base (2), it is described
Filter membrane is provided with heavy metal adsorption protecting film on (4).
2. a kind of new DGT devices according to claim 1, it is characterised in that：Heavy metal adsorption protecting film passes through table
Face adhesive gel class glue is arranged on filter membrane (4), and the aperture for adhering to is more than 0.45 μm；Support column (1), Up/down base (2)
PVDF materials are with multiple layerings snap ring (3) to make；Support column (1) is cylindrical shape, and a diameter of 9mm is highly 1m, on
Lower bottom base (2) is cylindrical shape, and a diameter of 10mm, thickness are 1mm, a diameter of 10mm of layering snap ring (3), and width is 1mm, number
Measure as 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620472081.XU CN206074593U (en) | 2016-05-23 | 2016-05-23 | Novel DGT device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620472081.XU CN206074593U (en) | 2016-05-23 | 2016-05-23 | Novel DGT device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206074593U true CN206074593U (en) | 2017-04-05 |
Family
ID=58420978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620472081.XU Active CN206074593U (en) | 2016-05-23 | 2016-05-23 | Novel DGT device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206074593U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731963A (en) * | 2018-04-04 | 2018-11-02 | 北京交通大学 | The passive sampling apparatus and method of polarity organic pollution in rice soil |
| CN108802849A (en) * | 2018-07-27 | 2018-11-13 | 佛山市高明曦逻科技有限公司 | Metal monitors pile foundation in a kind of soil |
| US10514371B2 (en) | 2017-11-01 | 2019-12-24 | Savannah River Nuclear Solutions, Llc | Reactive diffusive gradient in thin-film sampler and mercury speciation by use of same |
| US11319225B2 (en) | 2018-10-24 | 2022-05-03 | Savannah River Nuclear Solutions, Llc | Modular system and method for mercury speciation in a fluid sample |
| CN116593415A (en) * | 2023-07-18 | 2023-08-15 | 延津县兴鑫农业种植专业合作社 | Dynamic detection device and method for soil heavy metal remediation |
-
2016
- 2016-05-23 CN CN201620472081.XU patent/CN206074593U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10514371B2 (en) | 2017-11-01 | 2019-12-24 | Savannah River Nuclear Solutions, Llc | Reactive diffusive gradient in thin-film sampler and mercury speciation by use of same |
| CN108731963A (en) * | 2018-04-04 | 2018-11-02 | 北京交通大学 | The passive sampling apparatus and method of polarity organic pollution in rice soil |
| CN108802849A (en) * | 2018-07-27 | 2018-11-13 | 佛山市高明曦逻科技有限公司 | Metal monitors pile foundation in a kind of soil |
| US11319225B2 (en) | 2018-10-24 | 2022-05-03 | Savannah River Nuclear Solutions, Llc | Modular system and method for mercury speciation in a fluid sample |
| CN116593415A (en) * | 2023-07-18 | 2023-08-15 | 延津县兴鑫农业种植专业合作社 | Dynamic detection device and method for soil heavy metal remediation |
| CN116593415B (en) * | 2023-07-18 | 2023-10-03 | 延津县兴鑫农业种植专业合作社 | Dynamic detection device and method for soil heavy metal remediation |
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