CN207412820U - For the solid-phase extraction column switching device of bulk sample pre-treatment - Google Patents
For the solid-phase extraction column switching device of bulk sample pre-treatment Download PDFInfo
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- CN207412820U CN207412820U CN201721375965.4U CN201721375965U CN207412820U CN 207412820 U CN207412820 U CN 207412820U CN 201721375965 U CN201721375965 U CN 201721375965U CN 207412820 U CN207412820 U CN 207412820U
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- China
- Prior art keywords
- extraction column
- solid
- switching device
- phase extraction
- ventilation pipe
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- 238000002414 normal-phase solid-phase extraction Methods 0.000 title claims abstract description 32
- 238000002203 pretreatment Methods 0.000 title abstract description 5
- 238000009423 ventilation Methods 0.000 claims abstract description 21
- 238000000605 extraction Methods 0.000 abstract description 14
- 239000000523 sample Substances 0.000 description 19
- 239000012488 sample solution Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000000105 evaporative light scattering detection Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004460 liquid liquid chromatography Methods 0.000 description 1
- 238000001172 liquid--solid extraction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a kind of solid-phase extraction column switching device for bulk sample pre-treatment, the device narrow wide cone shape under being, location mid-shaft has center tube perforation up and down；The surrounding of center tube designs the ventilation pipe of 1 or more, and the ventilation pipe equally perforation up and down, but is not connected with center tube, and so in use, extraction column inside and outside air pressure balance is unlikely to generate negative pressure and make solution that can not flow into.Although the solid-phase extraction column switching device of the utility model improves simply, those skilled in the art can not readily occur in, and solve the problems, such as to always exist in laboratory practices, have marked improvement.
Description
Technical field
The utility model belongs to chemical analysis pre-treatment field, and in particular to a kind of consolidating for bulk sample pre-treatment
Phase extraction column switching device.
Background technology
Solid phase extraction techniques are the Sample Pretreatment Techniques to grow up since last century the eighties mid-term.By
Liquid-solid extraction and liquid chromatography technology, which are combined, to be developed.It is mainly used for the separation, purification and enrichment of sample, it is therefore intended that drop
Low sample substrate interference, improves detection sensitivity.The technology is now widely used in the row such as environmental protection, tobacco, food, drug, oil
Field of chemical detection in industry, for target component be mostly micro or trace it is poisonous and harmful, it is illegal addition, the residual beast of agriculture it is residual, micro-
Measure specific component etc..
Due to target component, content is extremely low in the sample, and general content is mg/L or ug/L ranks；It is set to meet detection
The requirement of standby sensitivity is, it is necessary to take Solid Phase Extraction to be separated and concentrated to reach the sample solution of large volume (10~50ml)
To testing requirements.
The specification of existing conventional solid extraction pillar is respectively less than 6ml, and technical staff need to carry out the upper of multiple sample solution
Column operation is unfavorable for efficiently, rapidly carrying out mass detection work.
At present, it is useful for connection sample cell (volume is 25~50ml) and the switching device of solid phase extraction column (also referred to as turns
Connector, connector), adapter top connection sample cell, lower end connection solid phase extraction column, in use, due to part
, there is sample solution and is trapped in sample cell to can not be successfully inflow solid phase extraction column in the reason for negative pressure and solution surface tension
The phenomenon that.Occur loosening that link position improves during above-mentioned phenomenon, but loosen link position and be susceptible to leakage, influence
The accuracy of extraction experiments；It also results in connector to deform in use, influences service life.
The content of the invention
In order to solve existing adapter in use due to local decompression, sample solution can not flow into solid
Mutually the problem of extraction pillar, the purpose of this utility model is to provide a kind of improved solid-phase extraction column switching devices.
The purpose of this utility model is achieved through the following technical solutions：
A kind of solid-phase extraction column switching device, narrow wide cone shape, the shape are conducive to switching device and sample under being
Steadily frame is placed on solid-phase extraction column in product pond, is not easy to topple over；
In the location mid-shaft of the device, there is center tube perforation up and down；The center tube is that solution is flowed to from sample cell
The passage of solid-phase extraction column；
In order to solve the problems, such as local decompression, the surrounding design 1 of center tube on switching device in extraction column in use
Ventilation pipe more than item, the ventilation pipe equally perforation up and down, but are not connected with center tube, so in use,
Extraction column inside and outside air pressure balance is unlikely to generate negative pressure and make solution that can not flow into；
The number of the ventilation pipe preferably 2 or 4；
The diameter of the ventilation pipe should not be big, to avoid pollution of the foreign matter to sample solution；Ventilation pipe it is straight
Footpath preferably 1~2mm.
The application method of the utility model solid-phase extraction column switching device is：The upper vent of ventilation pipe is blocked up using preceding
Sample cell and solid phase extraction column, are then connected in the upper and lower ends of adapter, start solid phase extraction by plug (reduce pollution) respectively
Take work；When the sample in sample cell can not flow to solid phase extraction column through adapter downwards, take out and lead on ventilation pipe
The tamper of gas port makes extraction column inside and outside air pressure balance, again will be logical after sample solution smoothly can flow into solid phase extraction column
Feed channel is blocked, and continues Solid Phase Extraction work.
The utility model is had the following advantages compared with the prior art and effect：
The solid-phase extraction column switching device of the utility model on the basis of prior art adapter, adds 1 or more
Ventilation pipe so that extraction column inside and outside air pressure balance, be unlikely to generate negative pressure and make solution that can not flow into.Although improve letter
It is single, but those skilled in the art can not readily occur in, and solve the problems, such as to always exist in laboratory practices, have
Marked improvement.
Description of the drawings
Fig. 1 is the usage state diagram of the utility model solid-phase extraction column switching device；Wherein, the solid phase of 1- the utility model
Extraction column switching device, 2- solid-phase extraction columns, 3- sample cells.
Fig. 2 is the vertical section schematic diagram of the utility model solid-phase extraction column switching device；
Fig. 3 is the top view of the utility model solid-phase extraction column switching device；
Wherein, 11- center tubes, 12- ventilation pipes.
Specific embodiment
The utility model is described in further detail with reference to embodiment and attached drawing, but the implementation of the utility model
Mode is without being limited thereto.
Embodiment
A kind of solid-phase extraction column switching device 1, as shown in Figures 2 and 3, narrow wide cone shape under being, in the device
Location mid-shaft, have a center tube 11 penetrate through up and down；The center tube is that solution flows to the logical of solid-phase extraction column from sample cell
Road；
In order to solve the problems, such as in use local decompression in extraction column, the surrounding of center tube 11 is set on switching device 1
2 ventilation pipes 12 are counted, the ventilation pipe 12 equally perforation up and down, but is not connected with center tube 11, is so using process
In, 2 inside and outside air pressure balance of extraction column is unlikely to generate negative pressure and make solution that can not flow into；
A diameter of 1~2mm of the ventilation pipe 12.
The use state of the utility model solid-phase extraction column switching device 1 is as shown in Figure 1, using preceding by ventilation pipe 12
Upper vent blocks (reduce pollution), and sample cell 3 and solid phase extraction column 2 are then connected in up and down the two of adapter 1 respectively
End starts Solid Phase Extraction work；When the sample in sample cell 3 can not flow to solid phase extraction column 2 through adapter 1 downwards,
The tamper of 12 upper vent of ventilation pipe is taken out, makes 2 inside and outside air pressure balance of extraction column, it is solid to treat that sample solution can be flowed into smoothly
Mutually ventilation pipe 12 is blocked again after extraction pillar 2, continues Solid Phase Extraction work.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiment of the utility model and from above-mentioned
The limitation of embodiment, the change made under other any Spirit Essences and principle without departing from the utility model are modified, replaced
Generation, combination simplify, and should be equivalent substitute mode, are included within the scope of protection of the utility model.
Claims (4)
1. a kind of solid-phase extraction column switching device, it is characterised in that：In the location mid-shaft of the device, there is a center tube to penetrate through
Under；The surrounding of center tube designs the ventilation pipe of 1 or more, the ventilation pipe equally perforation up and down, but not with center tube
Connection.
2. switching device according to claim 1, it is characterised in that：Described device narrow wide cone shape under being.
3. switching device according to claim 1, it is characterised in that：The number of the ventilation pipe is 2 or 4.
4. switching device according to claim 1, it is characterised in that：The diameter of the ventilation pipe is 1~2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721375965.4U CN207412820U (en) | 2017-10-24 | 2017-10-24 | For the solid-phase extraction column switching device of bulk sample pre-treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721375965.4U CN207412820U (en) | 2017-10-24 | 2017-10-24 | For the solid-phase extraction column switching device of bulk sample pre-treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207412820U true CN207412820U (en) | 2018-05-29 |
Family
ID=62308675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721375965.4U Active CN207412820U (en) | 2017-10-24 | 2017-10-24 | For the solid-phase extraction column switching device of bulk sample pre-treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207412820U (en) |
-
2017
- 2017-10-24 CN CN201721375965.4U patent/CN207412820U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 701, Building A, No. 17 Xicheng Middle Street, Huangpu District, Guangzhou City, Guangdong Province, 510000 Patentee after: GUANGZHOU TAIWEI BIOTECHNOLOGY CO.,LTD. Address before: 510663 3rd floor, innovation park, No.6 Xinrui Road, Science City, Guangzhou Development Zone, Guangdong Province Patentee before: GUANGZHOU TAIWEI BIOTECHNOLOGY CO.,LTD. |