CN216410841U - Enrichment device of elements in on-site water sample - Google Patents
Enrichment device of elements in on-site water sample Download PDFInfo
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- CN216410841U CN216410841U CN202122032097.2U CN202122032097U CN216410841U CN 216410841 U CN216410841 U CN 216410841U CN 202122032097 U CN202122032097 U CN 202122032097U CN 216410841 U CN216410841 U CN 216410841U
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Abstract
The utility model relates to an enrichment device for elements in a field water sample, and belongs to the technical field of water environment field monitoring. The enrichment device comprises a pressurization air pump, a water sample pool, an ion exchange column and an elution receiving tube; the top of the water sample pool is connected with a pressurizing air pump, the bottom of the water sample pool is connected with an ion exchange column, a liquid adding port is also arranged above the water sample pool, and the liquid adding port is used for adding a water sample to be detected before element enrichment; after element enrichment, the liquid adding port is used for adding eluent, and the pressurizing air pump is used for applying proper air pressure to the water sample pool to push a water sample to be detected or the eluent to enter the ion exchange column at proper flow rate; the ion exchange column is internally provided with an ion exchange material; the elution receiving pipe is used for receiving the eluent flowing out from the lower part of the ion exchange column. The enrichment device has simple structure, and can realize the field on-site and rapid enrichment of trace elements in various environmental water bodies such as surface water, underground water, industrial wastewater and the like and domestic drinking water.
Description
Technical Field
The utility model relates to an enrichment device for elements in a field water sample, and belongs to the technical field of water environment field monitoring.
Background
The analysis and determination of elements in water bodies such as surface water, underground water, industrial wastewater and the like are main contents for realizing environmental monitoring, but in field sites and environmental emergency incidents, the concentration of heavy metal elements such as thallium, arsenic, lead, mercury, cadmium and the like is low, and the field detection and analysis are difficult. In recent years, with the increasing enhancement of the work of central ecological environment protection and supervision, attention has been paid to on-site monitoring of metal elements in various water bodies such as surface water, underground water, industrial wastewater and the like. National standards such as the emission standard of water pollutants for the iron and steel industry (GB 13456-2012) and the emission standard of pollutants for the tin, antimony and mercury industry (GB 30770-2014) relate to the limits of various toxic and harmful elements, and are laboratory analysis means, and most of the existing field monitoring means cannot meet the limit requirements of the standards. Therefore, the development of field on-site enrichment of elements in various environmental water bodies is significant, and important early-stage technical support can be provided for rapidly and effectively monitoring various environmental elements of water bodies.
At present, the technical methods for enriching elements in water mainly include a heating concentration method, a coprecipitation method, an adsorption-desorption method and the like, the methods are commonly used in laboratory analysis due to the need of corresponding support conditions, however, laboratory analysis equipment is complex in structure and not easy to carry, and the requirements for realizing field real-time enrichment in a field cannot be met. Therefore, a device capable of realizing element enrichment in water on site is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an apparatus for enriching elements in a water sample for field use.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
an enrichment device for elements in a water sample for on-site use comprises a pressurization air pump, a water sample pool, an ion exchange column and an elution receiving tube; the top of the water sample pool is connected with a booster air pump, the bottom of the water sample pool is connected with an ion exchange column, a liquid adding port is also arranged above the water sample pool, and the liquid adding port is used for adding a water sample to be tested before element enrichment; after the elements are enriched, the liquid adding port is used for adding eluent, and the pressurizing air pump is used for applying air pressure to the water sample pool so as to push the water sample to be detected or the eluent to enter the ion exchange column;
the ion exchange column is internally provided with an ion exchange material, and the type of the ion exchange material is determined by the element to be enriched;
the elution receiving pipe is used for receiving the eluent flowing out from the lower part of the ion exchange column.
Furthermore, an air pressure regulating valve is arranged on a connecting pipeline between the pressurization air pump and the water sample pool and used for regulating the air pressure.
Furthermore, the liquid feeding port is matched with a pressurization air pump to adjust air pressure in the water sample pool.
Furthermore, the water sample pool is composed of a cylindrical section and a conical section, and the small end of the conical section is connected with the ion exchange column.
Further, the volume of the water sample pool is determined according to the enrichment times.
Further, the volume of the water sample pool is the product of the elution liquid volume and the enrichment factor.
Further, the inner diameter of the inlet of the ion exchange column is larger than that of the outlet of the ion exchange column.
Furthermore, the ion exchange column, the water sample pool and the elution receiving tube are made of polytetrafluoroethylene, polyethylene or polypropylene, and the ion exchange material is ion exchange resin.
Furthermore, the ion exchange material is positioned at the lower end of the ion exchange column, the upper two ends of the ion exchange material are provided with upper sieve plates, and the lower end of the ion exchange material is provided with a lower sieve plate.
Furthermore, the upper sieve plate and the lower sieve plate are made of polytetrafluoroethylene, polyethylene or polypropylene.
Advantageous effects
In the enrichment device, after a water sample to be detected is added into the water sample pool through the liquid adding port, air pressure is generated through the pressurization air pump, the water sample to be detected is enriched through the ion exchange material in the ion exchange column at a proper flow rate, elements to be enriched are adsorbed by the ion exchange material to realize enrichment, after the enrichment is finished, eluent with proper volume and types is added through the liquid adding port to elute the enriched elements, and the eluted elements are received by the elution receiving tube.
Drawings
FIG. 1 is a schematic view of the structure of an enrichment apparatus in example 1 of the present invention.
Wherein, 1-booster pump, 2-air pressure regulating valve, 3-liquid feeding port, 4-water sample injection pool, 5-ion exchange column, 6-upper sieve plate, 7-ion exchange material, 8-lower sieve plate, 9-elution collecting pipe.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
As shown in figure 1, the enrichment device for elements in a field water sample comprises a pressurization air pump 1, a water sample pool 4, an ion exchange column 5 and an elution receiving tube 9 which are sequentially arranged from top to bottom; the top of the water sample pool 4 is connected with the booster air pump 1, the bottom of the water sample pool 4 is connected with the ion exchange column 5, a liquid adding port 3 is also arranged above the water sample pool 4, and the liquid adding port 3 is used for adding a water sample to be detected before element enrichment; after element enrichment, the liquid adding port 3 is used for adding eluent, and the liquid adding port 3 is matched with the pressurization air pump 1 to adjust the air pressure in the water sample pool 4, so that a water sample to be detected or eluent is pushed to enter the ion exchange column 5.
The ion exchange column 5 contains an ion exchange material 7, and the kind of the ion exchange material 7 is determined by the element to be enriched.
The elution receiving tube 9 is used for receiving the eluent flowing out from the lower part of the ion exchange column 5.
And an air pressure regulating valve 2 is arranged on a connecting pipeline of the booster air pump 1 and the water sample pool 4 and used for regulating the air pressure.
The water sample pool 4 consists of a cylindrical section and a conical section, and the small end of the conical section is connected with the ion exchange column 5. The inner diameter of the cylindrical section of the general water sample pool 4 is 0.5 cm-3 cm.
The volume of the water sample pool is determined according to the enrichment times. Generally, the amount of the surfactant is 100mL or more.
The volume of the water sample pool 4 is the product of the elution liquid volume and the enrichment factor.
The inner diameter of the ion exchange column 5 at the inlet is larger than that at the outlet. The concentration efficiency (ion exchange efficiency) is determined by factors such as the amount of the filler (the amount of the ion exchange material), the retention time and the like.
The ion exchange column 5, the water sample pool 4 and the elution receiving tube 9 are all made of polytetrafluoroethylene, polyethylene or polypropylene.
The ion exchange material 7 is an ion exchange resin.
The ion exchange material 7 is positioned at the lower end of the ion exchange column 5, an upper sieve plate 6 is arranged at the upper end of the ion exchange material 7, and a lower sieve plate 8 is arranged at the lower end of the ion exchange material 7.
The upper sieve plate 6 and the lower sieve plate 8 are made of polytetrafluoroethylene, polyethylene or polypropylene.
The water sample pool 4 and the ion exchange column 5 can be designed integrally or in a sectional combination manner. The water sample pool 4 and the ion exchange column 5 can be replaced after one-time use, and can also be reused for many times.
When the device is used, a water sample to be detected enters the water sample pool 4 through the liquid adding port 3, the pressurizing air pump 1 is started to apply air pressure to the water sample pool 4, the water sample to be detected is pushed to enter the ion exchange column 5, the ion exchange material enriches elements to be enriched, and the enriched water sample waste liquid flows out from an outlet below the ion exchange column; after all the enriched water sample waste liquid flows out, the pressurizing air pump 1 is closed, the eluent is added from the liquid adding port 3, the pressurizing air pump 1 is opened again, the eluent is pushed into the ion exchange column 5, and the eluent flowing out from the lower part of the ion exchange column 5 is received by the elution receiving tube 9.
In summary, the present invention includes but is not limited to the above embodiments, and any equivalent substitutions or partial modifications made under the spirit and principle of the present invention should be considered within the protection scope of the present invention.
Claims (10)
1. The utility model provides an enrichment device of element in on-spot water sample which characterized in that: the enrichment device comprises a pressurization air pump (1), a water sample pool (4), an ion exchange column (5) and an elution receiving tube (9); the top of the water sample pool (4) is connected with the booster air pump (1), the bottom of the water sample pool is connected with the ion exchange column (5), a liquid adding opening (3) is further arranged above the water sample pool (4), and the liquid adding opening (3) is used for adding a water sample to be tested before element enrichment; after element enrichment, the liquid adding port (3) is used for adding eluent, and the pressurization air pump (1) is used for applying air pressure to the water sample pool so as to push a water sample to be detected or the eluent to enter the ion exchange column (5);
an ion exchange material (7) is arranged in the ion exchange column (5);
the elution receiving pipe (9) is used for receiving the eluent flowing out from the lower part of the ion exchange column (5).
2. The apparatus for enriching elements in a water sample for on-site use according to claim 1, wherein: and an air pressure regulating valve (2) is arranged on a connecting pipeline of the pressurization air pump (1) and the water sample pool (4) and used for regulating the air pressure.
3. The apparatus for enriching elements in a water sample for on-site use according to claim 1, wherein: the liquid adding port (3) is matched with the booster air pump (1) to adjust the air pressure in the water sample pool (4).
4. The apparatus for enriching elements in a water sample for on-site use according to claim 1, wherein: the water sample pool (4) is composed of a cylindrical section and a conical section, and the small end of the conical section is connected with the ion exchange column (5).
5. The apparatus for enriching elements in a water sample for on-site use according to claim 1, wherein: the volume of the water sample pool (4) is determined according to the enrichment factor.
6. The apparatus for enriching elements in a water sample for on-site use according to claim 5, wherein: the volume of the water sample pool (4) is the product of the elution liquid volume and the enrichment factor.
7. The apparatus for enriching elements in a water sample for on-site use according to claim 1, wherein: the inner diameter of the inlet of the ion exchange column (5) is larger than that of the outlet.
8. The apparatus for enriching elements in a water sample for on-site use according to claim 1, wherein: the ion exchange column (5), the water sample pool (4) and the elution receiving tube (9) are made of polytetrafluoroethylene, polyethylene or polypropylene, and the ion exchange material (7) is ion exchange resin.
9. The apparatus for enriching elements in a water sample for on-site use according to claim 1, wherein: the ion exchange material (7) is positioned at the lower end of the ion exchange column (5), an upper sieve plate (6) is arranged at the upper end of the ion exchange material (7), and a lower sieve plate (8) is arranged at the lower end.
10. An apparatus for enriching elements in a water sample for on-site use according to claim 9, wherein: the upper sieve plate (6) and the lower sieve plate (8) are made of polytetrafluoroethylene, polyethylene or polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122032097.2U CN216410841U (en) | 2021-08-26 | 2021-08-26 | Enrichment device of elements in on-site water sample |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122032097.2U CN216410841U (en) | 2021-08-26 | 2021-08-26 | Enrichment device of elements in on-site water sample |
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| CN216410841U true CN216410841U (en) | 2022-04-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342474A (en) * | 2017-08-01 | 2019-02-15 | 北京安科慧生科技有限公司 | Solid phase extraction concentration device and with its associated with XRF |
| CN115639337A (en) * | 2022-12-23 | 2023-01-24 | 国科大杭州高等研究院 | Environmental water sampling device with in-situ enrichment performance and sampling method |
-
2021
- 2021-08-26 CN CN202122032097.2U patent/CN216410841U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342474A (en) * | 2017-08-01 | 2019-02-15 | 北京安科慧生科技有限公司 | Solid phase extraction concentration device and with its associated with XRF |
| CN115639337A (en) * | 2022-12-23 | 2023-01-24 | 国科大杭州高等研究院 | Environmental water sampling device with in-situ enrichment performance and sampling method |
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