CN211905240U - Quick separation device for residual quantity analysis of trifluralin in aquatic products - Google Patents
Quick separation device for residual quantity analysis of trifluralin in aquatic products Download PDFInfo
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- CN211905240U CN211905240U CN202020687305.5U CN202020687305U CN211905240U CN 211905240 U CN211905240 U CN 211905240U CN 202020687305 U CN202020687305 U CN 202020687305U CN 211905240 U CN211905240 U CN 211905240U
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- aquatic products
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Abstract
The utility model provides a quick separation device is used in analysis of trifluralin residual quantity in aquatic products, is including utensil stopper extraction tube (2) that have mill's mouth stopper (1), its characterized in that: the glass sand core (3) is arranged in the extraction tube (2) with the plug, the bottom of the extraction tube with the plug is a funnel-shaped liquid guide tube (2-1), a polytetrafluoroethylene cock (4) is arranged on the funnel-shaped liquid guide tube (2-1), an extraction liquid leading-out sleeve (5) is arranged on the periphery of the funnel-shaped liquid guide tube (2-1), the upper end of the leading-out sleeve is directly sintered with the extraction tube with the plug, the lower end of the leading-out sleeve is of a flat-bottom open structure, and cock through holes are reserved on two sides of the wall of. The utility model has the advantages that: the device can be used for rapidly extracting and separating trifluralin and aquatic products, and the centrifugal operation step is omitted, so that the rapid extraction and separation of the target object are realized, the sample pretreatment operation is simplified, the working efficiency is improved, and the analysis cost is saved.
Description
Technical Field
The utility model relates to a separation device and application method for the analysis of the residual quantity of trifluralin in aquatic products, specifically say that, design a separation device for the analysis of the residual quantity of trifluralin in aquatic products, adopt the device can be fast with trifluralin and aquatic products extraction separation.
Background
In GB 31660.3-2019 gas chromatography for determining residual trifluralin in aquatic products with national food safety standards, a sample is subjected to vortex extraction by using a polypropylene centrifugal tube, 2 times of vortex extraction are required, centrifugation is performed after the first vortex, the supernatant is poured out, then secondary vortex extraction is performed, the centrifugation is performed again, the supernatant is poured out, and the two are combined to obtain a sample preparation solution. The supernatant liquid is poured out after centrifugation is needed in the operation process, and the sample is very easy to pour out together in the operation process, so that the extraction liquid has residues and the sample flows out along with the pouring process, and the operation is very inconvenient; whether a practical device which can quickly separate a sample from an extraction liquid and can not pour out a sample to be detected is designed is the key point concerned by the inventor of the present invention.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is just to the weak point that exists among the prior art, provides a little leling for residual quantity analysis separator in aquatic products, and the device collects sample extraction and extraction liquid quick separation process integration, simplifies sample operating procedure, saves centrifugal operation, improves sample treatment efficiency.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a quick separation device is used in analysis of trifluralin residual quantity in aquatic products, includes the utensil stopper extraction tube that has the mill mouthful stopper, wherein: the glass sand core is arranged in the extraction tube with the plug, the bottom of the extraction tube with the plug is a funnel-shaped liquid guide tube, a polytetrafluoroethylene cock is arranged on the funnel-shaped liquid guide tube, an extraction liquid leading-out sleeve is arranged on the periphery of the funnel-shaped liquid guide tube, the upper end of the leading-out sleeve is directly sintered with the extraction tube with the plug, the lower end of the leading-out sleeve is of a flat-bottom opening structure, and cock through holes are reserved on two sides of the wall of the leading.
The glass sand core is a G2 sand core, so that the extraction liquid can be quickly filtered, and liquid-solid separation can be realized.
The utility model discloses a quick separation device accessible extract derives sheathed tube flat and upright places and carries out the vortex extraction on vortex oscillator.
The device also comprises a double-chain ball with an interface, which can be connected with the upper port of the extraction tube with a plug, and extract can be quickly led out by pressurizing the double-chain ball in the process of leading out the extract.
More specifically speaking, the utility model discloses a device can divide into 4 parts and constitute: the extraction tube comprises an extraction tube part with a plug, a glass sand core part, an extraction liquid lead-out part and a double-chain ball with a connector, wherein the upper opening of the extraction tube part adopts glass with a ground opening of the plug, the lower end of the extraction tube part is sealed with the glass sand core part, the lower part of the glass sand core part is hermetically connected with an extraction liquid lead-out area, a cock of the extraction liquid lead-out opening is opened during liquid-solid separation, and the extraction liquid can be quickly led out through pressurization of the. The device can simplify the sample operation steps, save the centrifugal operation and improve the sample processing efficiency in the sample analysis process.
The utility model discloses the extraction liquid derivation part comprises polytetrafluoroethylene cock and extraction liquid derivation pipe part, and extraction liquid derivation pipe bottom is flat, is convenient for upright place on vortex oscillator, and the extraction liquid is derived by the export behind the cock, can realize that the extraction liquid is derived. Utilize the utility model discloses a with the extraction and separation of trifluralin and aquatic products fast, simplified the pretreatment step, improved work efficiency, practiced thrift the analysis cost, lost to a simple and practical's extraction and separation apparatus.
Drawings
FIG. 1 shows an extraction, filtration and separation device of the present invention,
in the figure: 1. a burr plug; 2. an extraction tube with a plug, 2-1, a funnel-shaped liquid guide tube; 3. a G2 sand core; 4. a polytetrafluoroethylene faucet; 5. an extract liquid guiding-out sleeve; 6 double-chain ball with connecting ports.
Detailed Description
The present invention is further described below with reference to the accompanying drawings (examples):
as shown in fig. 1: the utility model provides a quick separation device is used in analysis of trifluralin residual quantity in aquatic products, includes utensil stopper extraction tube 2 that has ground stopper 1, wherein: the glass sand core 3 is arranged in the extraction tube 2 with the plug, the bottom of the extraction tube with the plug is a funnel-shaped liquid guide tube 2-1, the funnel-shaped liquid guide tube 2-1 is provided with a polytetrafluoroethylene cock 4, the periphery of the funnel-shaped liquid guide tube is provided with an extraction liquid lead-out sleeve 5, the upper end of the lead-out sleeve is directly sintered with the extraction tube 2 with the plug, the lower end of the lead-out sleeve is of a flat-bottom opening structure, and cock through holes are reserved on two sides of the wall of the lead.
The glass sand core (3) is a G2 sand core, so that the extraction liquid can be quickly filtered, and liquid-solid separation can be realized.
The utility model discloses a flat bottom that quick separation device accessible extract derived sleeve pipe 5 is upright placed and is carried out vortex extraction on vortex oscillator.
The device also comprises a double-chain ball 6 with an interface, which can be connected with the upper port of the extraction tube 2 with a plug, and the extraction liquid is quickly led out by pressurizing the double-chain ball in the extraction liquid leading-out process.
Application examples
Weighing 2g of aquatic product sample in an extraction tube with a plug, adding 10mL of acetone, covering a ground plug, placing the device on a vortex oscillator, performing vortex extraction for 1min, taking down the device, placing the device on a test tube rack, sequentially taking down the ground plug 1, opening a polytetrafluoroethylene cock 4, and collecting filtrate in a 100mL triangular flask; closing the glass cock, adding 10mL of acetone, covering the ground plug, placing the device on a vortex oscillator, performing vortex extraction for 1min, taking down the device, placing the device on a test tube rack, sequentially taking down the ground plug 1, opening the polytetrafluoroethylene cock 4, and collecting filtrate in the 100mL triangular flask. The filtration process can be carried out by using double-chain balls for pressure rapid filtration. The rapid extraction and separation of the target object in the sample can be completed through the process.
Claims (4)
1. The utility model provides a quick separation device is used in analysis of trifluralin residual quantity in aquatic products, is including utensil stopper extraction tube (2) that have mill's mouth stopper (1), its characterized in that: the glass sand core (3) is arranged in the extraction tube (2) with the plug, the bottom of the extraction tube with the plug is a funnel-shaped liquid guide tube (2-1), a polytetrafluoroethylene cock (4) is arranged on the funnel-shaped liquid guide tube (2-1), an extraction liquid leading-out sleeve (5) is arranged on the periphery of the funnel-shaped liquid guide tube (2-1), the upper end of the leading-out sleeve is directly sintered with the extraction tube with the plug, the lower end of the leading-out sleeve is of a flat-bottom open structure, and cock through holes are reserved on two sides of the wall of the.
2. The rapid separation device for analyzing the residual quantity of trifluralin in aquatic products according to claim 1, characterized in that: the glass sand core (3) is a G2 sand core.
3. The rapid separation device for analyzing the residual quantity of trifluralin in aquatic products according to claim 1, characterized in that: the quick separation device can be vertically placed on a vortex oscillator through the flat bottom of the extraction liquid guide-out sleeve pipe for vortex extraction.
4. The rapid separation device for analyzing the residual quantity of trifluralin in aquatic products according to claim 1, characterized in that: the device also comprises a double-chain ball (6) with an interface, which can be connected with the upper port of the extraction tube with a plug and can quickly lead out the extraction liquid by pressurizing the double-chain ball in the process of leading out the extraction liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020687305.5U CN211905240U (en) | 2020-04-29 | 2020-04-29 | Quick separation device for residual quantity analysis of trifluralin in aquatic products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020687305.5U CN211905240U (en) | 2020-04-29 | 2020-04-29 | Quick separation device for residual quantity analysis of trifluralin in aquatic products |
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| CN211905240U true CN211905240U (en) | 2020-11-10 |
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| CN202020687305.5U Active CN211905240U (en) | 2020-04-29 | 2020-04-29 | Quick separation device for residual quantity analysis of trifluralin in aquatic products |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264618A (en) * | 2021-11-15 | 2022-04-01 | 中国烟草总公司福建省公司 | Method for detecting starch content in tobacco |
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2020
- 2020-04-29 CN CN202020687305.5U patent/CN211905240U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264618A (en) * | 2021-11-15 | 2022-04-01 | 中国烟草总公司福建省公司 | Method for detecting starch content in tobacco |
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