CN202057518U - Passive sampling device for metal ions in water environment or water in soil pore spaces - Google Patents
Passive sampling device for metal ions in water environment or water in soil pore spaces Download PDFInfo
- Publication number
- CN202057518U CN202057518U CN 201120009011 CN201120009011U CN202057518U CN 202057518 U CN202057518 U CN 202057518U CN 201120009011 CN201120009011 CN 201120009011 CN 201120009011 U CN201120009011 U CN 201120009011U CN 202057518 U CN202057518 U CN 202057518U
- Authority
- CN
- China
- Prior art keywords
- water
- soil pore
- sampling
- sampling container
- pore spaces
- 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.)
- Expired - Fee Related
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000011148 porous material Substances 0.000 title claims abstract description 14
- 239000002689 soil Substances 0.000 title claims abstract description 13
- 229910021645 metal ion Inorganic materials 0.000 title abstract 2
- 238000009792 diffusion process Methods 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 8
- 238000000502 dialysis Methods 0.000 claims abstract description 7
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 4
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical group [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000004695 Polyether sulfone Substances 0.000 claims abstract description 3
- 229920002678 cellulose Polymers 0.000 claims abstract description 3
- 239000001913 cellulose Substances 0.000 claims abstract description 3
- 229920002301 cellulose acetate Polymers 0.000 claims abstract description 3
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 3
- 239000011737 fluorine Substances 0.000 claims abstract description 3
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 3
- 150000001455 metallic ions Chemical class 0.000 claims description 6
- 239000010408 film Substances 0.000 claims description 2
- 229940059939 kayexalate Drugs 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000010409 thin film Substances 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 239000008364 bulk solution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 229920001429 chelating resin Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Abstract
A passive sampling device for metal ions in a water environment or water in soil pore spaces belongs to the field of environmental science and engineering and relates to passive sampling equipment used in water and water bodies in the soil pore spaces, in particular to a feeding device for water in the soil pore spaces. The passive sampling device mainly comprises a main body, a diffusion layer and a combined phase; the main body consists of a sampling container and a bottom board, the sampling container and the bottom board are fixed by screws, and a cylindrical hole is arranged inside the sampling container and internally provided with a cylinder with a conical cavity; the diffusion layer is selected from a dialysis membrane, a fluorine membrane, polyether sulfone, cellulose acetate or mixed cellulose; and the combined phase is selected from sodium polyacrylate or polystyrolsulfon acid. In the utility model, a DGT (diffusive gradients in thin-films) device with a liquid combined phase is convenient to operate; and the precision and accuracy of extracted heavy metal biological effectiveness can be improved.
Description
Technical field
The utility model belongs to the Environmental Science and Engineering field, relates to the passive sampling equipment that is used for soil pore water and water body.
Background technology
An important means of passive sampling measured soil pore water and water body material available state, " diffusive gradients in thin-films (DGT) technology " that now is widely used be 1994 by William doctor Davison of the Lancaster of Britain invention a kind of can original position, continuous passive sampling technology.The DGT sampling thief mainly comprises main body, diffusion layer and combination three parts mutually, and main body is played a supporting role; Diffusion layer plays two effects, separate in conjunction with the bulk solution in the external world, it two is the coefficient of diffusion that can control material, sets up a stable concentration gradient; For being mixed with the gel layer or the liquid layer of chelating resin, main effect is the material of coming in conjunction with through the diffusion layer diffusion in conjunction with mutually.Accumulation principle is for being placed in water body or the pore water, and through after a while, quality and the time accumulated in combination mutually are linear, thereby calculates in the water body or the time average concentration of the material in the pore water.Quantitative formula according to the DGT technology:
C b =M ⊿ g/D m t A, with
mRight
tCurve plotting,
M=kt+b, slope of a curve
kWherein
A,
⊿ g, be known quantity,
D mRecord by experiment, bring the concentration of trying to achieve bulk solution into
C b
Because the material gone up mutually of solid bond needs to extract through method of pickling, there have been problems such as the accuracy extracted and accuracy.
Summary of the invention
The utility model provides a kind of DGT of utilization technology to gather the device of heavy metal ion in the water and soil earth.
Measure the passive sampling apparatus of metallic ion in a kind of water environment or the soil pore water, mainly comprise main body, diffusion layer and combination three parts mutually; Main body is made up of sampling container and base plate, and sampling container and base plate are fixed by screw, and there is the hole of cylindrical shape sampling container inside, places the right cylinder of band circular cone cavity in the hole; Diffusion layer adopts dialysis membrane, fluorine film, polyethersulfone, cellulose acetate or cellulose mixture; In conjunction with being selected from sodium polyacrylate or kayexalate mutually.
It is 1-6 that there is the number in the hole of cylindrical shape described sampling container inside.
The molecular cut off Mw of described dialysis membrane is 20000,14000,7000,5000,3500 or 1000.
The utility model liquid state is in conjunction with the DGT device of phase, and is easy to operate; The accuracy and the accuracy of the bioavailability of heavy metals that extracts are improved.
Description of drawings
Fig. 1 is the sectional view of sampling container inner cylinder;
Fig. 2 is the sectional view of the cavity of the cone shape among Fig. 1;
Fig. 3,4,5,6 is respectively a hole, two holes, and the liquid state in three holes (circle) and three holes (rectangle) is respectively sampling container and base plate in conjunction with the vertical view of DGT mutually, (a) and (b) wherein.
Embodiment
Embodiment 1
Measure the passive sampling apparatus of metallic ion in water environment or the soil pore water, comprise main body, diffusion layer and combination three parts mutually; Main body is made up of sampling container and base plate, and sampling container and base plate are fixed by screw, and there is the hole of cylindrical shape sampling container inside, places the right cylinder of band circular cone cavity in the hole; Diffusion layer adopts dialysis membrane, and the molecular cut off Mw of described dialysis membrane is 14000; In conjunction with being sodium polyacrylate mutually.
It is 3 that there is the number in the hole of cylindrical shape sampling container inside, and arrangement mode can be Fig. 5 or shown in Figure 6; Fig. 1 is the synoptic diagram of sampling container inner cylinder, and Fig. 2 is the cavity that to leave a volume in Fig. 1 be the cone shape of 2 mL.Get the hole at periphery, fixed.
Claims (3)
1. the passive sampling apparatus of metallic ion in water environment or the soil pore water is characterized in that, sampling apparatus mainly comprises main body, diffusion layer and in conjunction with three parts mutually; Main body is made up of sampling container and base plate, and sampling container and base plate are fixed by screw, and there is the hole of cylindrical shape sampling container inside, places the right cylinder of band circular cone cavity in the hole; Diffusion layer adopts dialysis membrane, fluorine film, polyethersulfone, cellulose acetate or cellulose mixture; In conjunction with being selected from sodium polyacrylate or kayexalate mutually.
2. the passive sampling apparatus of metallic ion is characterized in that in water environment according to claim 1 or the soil pore water, and it is 1-6 that there is the number in the hole of cylindrical shape described sampling container inside.
3. the passive sampling apparatus of metallic ion is characterized in that in water environment according to claim 1 or the soil pore water, and the molecular cut off Mw of described dialysis membrane is 20000,14000,7000,5000,3500 or 1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120009011 CN202057518U (en) | 2011-01-13 | 2011-01-13 | Passive sampling device for metal ions in water environment or water in soil pore spaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120009011 CN202057518U (en) | 2011-01-13 | 2011-01-13 | Passive sampling device for metal ions in water environment or water in soil pore spaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202057518U true CN202057518U (en) | 2011-11-30 |
Family
ID=45017489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120009011 Expired - Fee Related CN202057518U (en) | 2011-01-13 | 2011-01-13 | Passive sampling device for metal ions in water environment or water in soil pore spaces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202057518U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841062A (en) * | 2012-08-24 | 2012-12-26 | 渤海大学 | Method for selectively and quantitatively collecting and measuring chromium (VI) in aquatic environment |
| CN102840999A (en) * | 2012-08-24 | 2012-12-26 | 渤海大学 | Method for quantification collecting heavy metal cations in water environment |
| CN104729878A (en) * | 2013-12-24 | 2015-06-24 | 南开大学 | Novel passive water body sampling technique based on supported ionic liquid |
| CN105823652A (en) * | 2016-05-10 | 2016-08-03 | 华东师范大学 | Passive sampling device for monitoring water dissolved-state matter and using method thereof |
| CN108745001A (en) * | 2018-03-09 | 2018-11-06 | 南京智感环境科技有限公司 | The DGT of methyl mercury and metal mercury ion fixes film, preparation method, DGT devices and eluent in deposit |
| 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 |
| CN110836800A (en) * | 2019-11-26 | 2020-02-25 | 天津大学 | Method for carrying out two-dimensional visualization on effective silicon distribution of plant rhizosphere |
| US11319225B2 (en) | 2018-10-24 | 2022-05-03 | Savannah River Nuclear Solutions, Llc | Modular system and method for mercury speciation in a fluid sample |
-
2011
- 2011-01-13 CN CN 201120009011 patent/CN202057518U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841062A (en) * | 2012-08-24 | 2012-12-26 | 渤海大学 | Method for selectively and quantitatively collecting and measuring chromium (VI) in aquatic environment |
| CN102840999A (en) * | 2012-08-24 | 2012-12-26 | 渤海大学 | Method for quantification collecting heavy metal cations in water environment |
| CN102841062B (en) * | 2012-08-24 | 2015-02-25 | 渤海大学 | Method for selectively and quantitatively collecting and measuring chromium (VI) in aquatic environment |
| CN104729878A (en) * | 2013-12-24 | 2015-06-24 | 南开大学 | Novel passive water body sampling technique based on supported ionic liquid |
| CN105823652A (en) * | 2016-05-10 | 2016-08-03 | 华东师范大学 | Passive sampling device for monitoring water dissolved-state matter and using method thereof |
| CN105823652B (en) * | 2016-05-10 | 2019-01-25 | 华东师范大学 | Passive sampling apparatus and its application method for water body solubilised state matter monitoring |
| 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 |
| CN108745001A (en) * | 2018-03-09 | 2018-11-06 | 南京智感环境科技有限公司 | The DGT of methyl mercury and metal mercury ion fixes film, preparation method, DGT devices and eluent in deposit |
| CN108745001B (en) * | 2018-03-09 | 2024-01-30 | 南京智感环境科技有限公司 | DGT (differential gas chromatography) fixing film of methylmercury and metallic mercury ions in sediment, preparation method, DGT device and eluent |
| US11319225B2 (en) | 2018-10-24 | 2022-05-03 | Savannah River Nuclear Solutions, Llc | Modular system and method for mercury speciation in a fluid sample |
| CN110836800A (en) * | 2019-11-26 | 2020-02-25 | 天津大学 | Method for carrying out two-dimensional visualization on effective silicon distribution of plant rhizosphere |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20120113 |