CN205042187U - Farming, residue of veterinary drug purify pretreatment straw - Google Patents
Farming, residue of veterinary drug purify pretreatment straw Download PDFInfo
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- CN205042187U CN205042187U CN201520610407.6U CN201520610407U CN205042187U CN 205042187 U CN205042187 U CN 205042187U CN 201520610407 U CN201520610407 U CN 201520610407U CN 205042187 U CN205042187 U CN 205042187U
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- suction pipe
- filter membrane
- pipe body
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- plastic
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Abstract
The utility model discloses a farming, residue of veterinary drug purify pretreatment straw, including plastics straw body, the front portion of plastics straw body is equipped with the psammitolite layer, and the afterbody of plastics straw body is equipped with the polymeric filter membrane layer, be equipped with solid plastics ball between polymeric filter membrane layer and the psammitolite layer, be equipped with adsorbed particle in the space that psammitolite layer, polymeric filter membrane layer, solid plastics ball and plastics straw body formed, have the solvent -oil ratio no longer than 5 milliliters, the extraction time was no longer than 3 minutes, to the requirement of velocity of flow un -specificness, the balancing time only needs 10 -20 second, activation, balance, the process of washing have repeatedly been saved, simple, the easy -operating advantage of operation requirement.
Description
Technical field
The utility model relates to a kind of SPE optimization device, specifically, relates to a kind of agriculture, residue of veterinary drug purification pre-treatment suction pipe, belongs to technical field of food safety.
Background technology
Current, the people shows great attention to food security, and the outstanding problem solving field of food safety existence is accelerated in an urgent demand.Party and state attaches great importance to solution food-safety problem, " special provision about strengthening the product safety supervision and management such as food ", the law of food safety and implementing regulations thereof are successively formulated, set up the food security committee of State Council, carry out a series of food security special administration and rectification.Along with consumer more and more payes attention to food-safety problem, the food safety detection market demand heats up day by day.Meanwhile, domestic testing agency and checkout equipment producer strengthen the service deployment of field of food safety one after another, and detection industry just welcomes spring.
Technological means for food safety detection is various, but regardless of which kind of technological means, roughly all comprises the pre-treatment of sample and detect analysis two parts.Developing rapidly in recent years along with analysis and detecting instrument, large-scale detecting instrument such as chromatogram, mass spectrum etc. can realize full-automatic analysis, and the accuracy, precision etc. of testing result can reach quite high standard.Although the sensitivity of present analysis instrument, resolution ratio and stability obtain develop rapidly, because food substrate is complicated, and analysis thing content is low to moderate μ g even ng level, and analytical instrument direct-detection is very difficult.Therefore, sample needs to carry out extracting, purify and concentrating carrying out analysis detection again, and sample pre-treatments can not only remove matrix interference, and can improve detection sensitivity.Pre-treatment takes time and effort in whole food safety detection process just most, the most loaded down with trivial details, and affects a ring of testing result most.
SPE is the mainstream technology of current sample pre-treatments, has become sample treatment conventional in food analysis, has been particularly useful for residues of pesticides, wild animal resources, also can be used for the analysis of additive, biotoxin and other organic pollutions.It is pretreatment technology most widely used at present.SPE product conventional on market is based on solid-phase extraction column.As shown in Figure 1A, the syringe type PA tube 6 that common solid-phase extraction column is is material with polyethylene or glass, is equipped with two panels porous polyethylene sieve plate 8 up and down in syringe type PA tube 6, a certain amount of adsorbent filler 7 is equipped with in centre.This SPE post profile is straight barrel type, opened upper end.Namely this SPE post can be used for manual operations, also can be used for automation mechanized operation.Conveniently manual operations, disposablely add the larger sample of volume (15mL ~ 20mL), some manufacturers produce Large Copacity solid-phase extraction column, as shown in Figure 1B, the adsorbent of SPE post and the size of filter disc part are identical with classical SPE post, belong to straight barrel type, but its part of bearing liquid is then the Large Copacity PA tube 9 of funnel type, so that the more fluid sample of disposable loading.Another common manual SPE post is its upper and lower two ends is all the tubular opening that diameter is very little.This extraction column is also referred to as SPE cylinder (SPEcartridges).This extraction equipment needs to be connected with syringe to use, and is generally used for easy manual operations.
Realizing in process of the present invention, inventor finds that prior art at least has the following disadvantages: on the one hand, has to pass through activation process before use, use a large amount of solvent (being generally 20mL-30mL).In addition, in order to accelerate the purification of sample, generally to be realized by the centrifugation step of at least 20 minutes.Three is that have particular/special requirement to the flow velocity of mobile phase, this just needs reviewer to expend more energy and time sometimes in order to separating effect is better.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of agriculture, residue of veterinary drug purification pre-treatment suction pipe, after adopting this pre-treatment suction pipe, have that solvent-oil ratio is low, extraction time is short, operation requirements is simple, to flow velocity without the short advantage of particular/special requirement, equilibration time.
For solving the problems of the technologies described above, the technical solution of the utility model is: agriculture, residue of veterinary drug purification pre-treatment suction pipe, comprise plastic suction pipe body, it is characterized in that, the front portion of plastic suction pipe body is provided with core layer, and the afterbody of plastic suction pipe body is provided with macromolecular filter membrane layer;
Several solid plastic balls are provided with in the space that macromolecular filter membrane layer and core layer and plastic suction pipe body are formed;
Adsorption particle is provided with in the space that core layer, macromolecular filter membrane layer, solid plastic ball and plastic suction pipe body are formed.
A kind of prioritization scheme, plastic suction pipe body is the common 5mL plastic suction pipe that polyethylene, polypropylene or polytetrafluoroethylene (PTFE) are made.
Further, the diameter of solid plastic ball is 3mm.
Further, adsorption particle is containing the particle of one or more in C18, C8, active carbon, diatomite, aluminium oxide, magnesium silicate, polymer, ion exchange resin, exclusion chromatography filler, affinity chromatograph filling.
The utility model adopts technique scheme, compared with prior art, has the following advantages: have solvent-oil ratio and be no more than 5 milliliters; Extraction time is no more than 3 minutes; To flow velocity without particular/special requirement; Equilibration time only needs 10-20 second; Eliminate activation, balance, repeatedly flushing process, simple, the easy-operating advantage of operation requirements.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing 1A, accompanying drawing 1B are the structural representation of solid-phase extraction column in prior art;
Accompanying drawing 2 is the structural representation of pre-treatment suction pipe in the utility model embodiment;
Accompanying drawing 3 is the use exploded view of pre-treatment suction pipe in the utility model embodiment;
Accompanying drawing 4A, accompanying drawing 4B be in the utility model embodiment pre-treatment suction pipe for the gas chromatogram of tens kinds of Pesticides Testing in fruit sample;
In figure,
1-core layer, 2-macromolecular filter membrane layer, 3-solid plastic ball, 4-adsorption particle, 5-plastic suction pipe body, 6-syringe type PA tube, 7-filler, 8-porous polyethylene sieve plate, 9-Large Copacity PA tube.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.
As shown in Figure 2, agriculture, residue of veterinary drug purification pre-treatment suction pipe, comprise plastic suction pipe body 5, the afterbody of plastic suction pipe body 5 can match with pipette samples with conventional liquid-transfering gun in laboratory, plastic suction pipe body 5 is common 5mL plastic suction pipe, adopts polyethylene, polypropylene or polytetrafluoroethylene (PTFE) to make.
The front portion of plastic suction pipe body 5 is provided with core layer 1, the afterbody of plastic suction pipe body 5 is provided with macromolecular filter membrane layer 2, several solid plastic balls 3 are provided with in the space that macromolecular filter membrane layer 2 and core layer 1 and plastic suction pipe body 5 are formed, the diameter of solid plastic ball 3 is 3mm, what solid plastic ball 3 can strengthen sample and adsorption particle 4 under a gas flow mixes dynamics, by polyethylene, polypropylene or polytetrafluoroethylene (PTFE) are made, core layer 1, macromolecular filter membrane layer 2, adsorption particle 4 is provided with in the space that solid plastic ball 3 and plastic suction pipe body 5 are formed, adsorption particle 4 is for containing C18, C8, active carbon, diatomite, aluminium oxide, magnesium silicate, polymer, ion exchange resin, exclusion chromatography filler, one or more adsorbents made of affinity chromatograph filling.
2, macromolecular filter membrane layer allows liquid to pass through, and stops solid to pass through.Be made up of the polyvinyl alcohol of Merlon, polyvinyl chloride, Kynoar, polysulfones, polyacrylonitrile, polyamide, polysulfonamides, SPSF, interlinkage, modified acrylic polymer.
The product more than related to is the known products can bought in the market.
As shown in Figure 3, during application, during extraction, sample fully mixes in the suction pipe of similar liquid-transfering gun rifle head with loose adsorption particle, sample forms a kind of homogeneous phase mixed gel body under airflow function with adsorption particle, ceaselessly fast vibration, extracted material to be checked within tens second time, eliminated matrix effect.
From the gas chromatogram of accompanying drawing 4A, accompanying drawing 4B, can be clearly seen that in the sample after using the extraction of pre-treatment suction pipe, impurity peaks obviously reduces, A is for before use, and B is after using.
Through contrasting with the solid-phase extraction device of main flow in the market, result is as follows:
The above is the citing of the utility model preferred forms, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.
Claims (1)
1. agriculture, residue of veterinary drug purification pre-treatment suction pipe, comprise plastic suction pipe body (5), it is characterized in that, the front portion of plastic suction pipe body (5) is provided with core layer (1), and the afterbody of plastic suction pipe body (5) is provided with macromolecular filter membrane layer (2);
Several solid plastic balls (3) are provided with in the space that macromolecular filter membrane layer (2) and core layer (1) and plastic suction pipe body (5) are formed;
Adsorption particle (4) is provided with in the space that core layer (1), macromolecular filter membrane layer (2), solid plastic ball (3) and plastic suction pipe body (5) are formed;
The common 5mL plastic suction pipe that plastic suction pipe body (5) is polyethylene, polypropylene or polytetrafluoroethylene (PTFE) are made;
The diameter of solid plastic ball (3) is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520610407.6U CN205042187U (en) | 2015-08-14 | 2015-08-14 | Farming, residue of veterinary drug purify pretreatment straw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520610407.6U CN205042187U (en) | 2015-08-14 | 2015-08-14 | Farming, residue of veterinary drug purify pretreatment straw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205042187U true CN205042187U (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520610407.6U Expired - Fee Related CN205042187U (en) | 2015-08-14 | 2015-08-14 | Farming, residue of veterinary drug purify pretreatment straw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205042187U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884397A (en) * | 2017-10-24 | 2018-04-06 | 黄世业 | Neonatal bilirubin quickly determines pipe |
-
2015
- 2015-08-14 CN CN201520610407.6U patent/CN205042187U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884397A (en) * | 2017-10-24 | 2018-04-06 | 黄世业 | Neonatal bilirubin quickly determines pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20170814 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |