CN205049533U - Novel farming, residue of veterinary drug purify pretreatment straw - Google Patents
Novel farming, residue of veterinary drug purify pretreatment straw Download PDFInfo
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- CN205049533U CN205049533U CN201520610739.4U CN201520610739U CN205049533U CN 205049533 U CN205049533 U CN 205049533U CN 201520610739 U CN201520610739 U CN 201520610739U CN 205049533 U CN205049533 U CN 205049533U
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- suction pipe
- residue
- filter membrane
- helical blade
- layer
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Abstract
The utility model discloses a novel 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 helical blade between polymeric filter membrane layer and the psammitolite layer, be equipped with adsorbed particle in the space that psammitolite layer, polymeric filter membrane layer, helical blade 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 Solid-Phase Extraction optimization device, specifically, relates to a kind of Novel rural, 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 council 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 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 adjuvant, biotoxin and other organic contaminants.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 1, the syringe type polypropylene tube 6 that common solid-phase extraction column is is material with tygon or glass, is equipped with two panels porous polyethylene sieve plate 8 up and down in syringe type polypropylene 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 fig. 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 polypropylene 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 Solid-Phase Extraction 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 Novel rural, 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: a kind of Novel rural, residue of veterinary drug purification pre-treatment suction pipe, comprises 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;
Helical blade is provided with between macromolecular filter membrane layer and core layer;
Adsorption particle is provided with in the space that core layer, macromolecular filter membrane layer, helical blade and plastic suction pipe body are formed.
A kind of prioritization scheme, plastic suction pipe body is the common 5mL plastic suction pipe that tygon, polypropylene or teflon are made.
Further, helical blade is the helical blade that tygon, polypropylene or teflon are made.
Further, adsorption particle is containing the particle of one or more in C18, C8, activated charcoal, zeyssatite, aluminium oxide, magnesium silicate, polymkeric substance, 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;
The structural representation of pre-treatment suction pipe in accompanying drawing 2 the utility model embodiment;
The structural representation of helical blade in accompanying drawing 3 the utility model embodiment;
The use exploded view of pre-treatment suction pipe in accompanying drawing 4 the utility model embodiment;
Accompanying drawing 5A, accompanying drawing 5B 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-helical blade, 4-adsorption particle, 5-plastic suction pipe body, 6-syringe type polypropylene tube, 7-filler, 8-porous polyethylene sieve plate, 9-Large Copacity polypropylene tube.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model is described.
As shown in Figure 2 and Figure 3, a kind of Novel rural, 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 tygon, polypropylene or teflon 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, helical blade 3 is provided with between macromolecular filter membrane layer 2 and core layer 1, helical blade 3 is rotatable under a gas flow, enhancing sample mixes dynamics with adsorption particle 4, by tygon, polypropylene or teflon are made, core layer 1, macromolecular filter membrane layer 2, adsorption particle 4 is provided with in the space that helical blade 3 and plastic suction pipe body 5 are formed, adsorption particle 4 is containing C18, C8, activated charcoal, zeyssatite, aluminium oxide, magnesium silicate, polymkeric substance, ion exchange resin, exclusion chromatography filler, one or more 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 (PVA) of polycarbonate, Polyvinylchloride, 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 4, 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 5A, accompanying drawing 5B, 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:
| Comparative indices | SPE solid-phase extraction column | The present embodiment solid-phase extraction column |
| Solvent-oil ratio | Greatly (at least 20 milliliters) | Very little (being no more than 5 milliliters) |
| Extraction time | At least 25 minutes | Tens seconds, be no more than at most 3 minutes |
| Operation requirements | Need the process such as activation, balance, repeatedly flushing, complex operation | Simply, easy to operate, eliminate the process such as activation, balance, repeatedly flushing |
| To flow rates demand | Have high requirements | Without particular/special requirement |
| Equilibration time | Long (2-3 minute of being separated by between step) | Ultrashort, only need 10-20 second |
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 (3)
1. Novel rural, a 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);
Helical blade (3) is provided with between macromolecular filter membrane layer (2) and core layer (1);
Adsorption particle (4) is provided with in the space that core layer (1), macromolecular filter membrane layer (2), helical blade (3) and plastic suction pipe body (5) are formed.
2. a kind of Novel rural as claimed in claim 1, residue of veterinary drug purification pre-treatment suction pipe, is characterized in that, plastic suction pipe body (5) is tygon, 5mL plastic suction pipe that polypropylene or teflon are made.
3. a kind of Novel rural as claimed in claim 1, residue of veterinary drug purification pre-treatment suction pipe, is characterized in that, helical blade (3) is tygon, helical blade that polypropylene or teflon are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520610739.4U CN205049533U (en) | 2015-08-14 | 2015-08-14 | Novel farming, residue of veterinary drug purify pretreatment straw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520610739.4U CN205049533U (en) | 2015-08-14 | 2015-08-14 | Novel farming, residue of veterinary drug purify pretreatment straw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205049533U true CN205049533U (en) | 2016-02-24 |
Family
ID=55343102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520610739.4U Expired - Fee Related CN205049533U (en) | 2015-08-14 | 2015-08-14 | Novel farming, residue of veterinary drug purify pretreatment straw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205049533U (en) |
-
2015
- 2015-08-14 CN CN201520610739.4U patent/CN205049533U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20170814 |