Anti-pollution pesticide residue detection card

Abstract

The utility model discloses an anti-pollution pesticide residue detection card, which belongs to the field of pesticide residue detection and comprises paper, a crease is arranged in the middle of the paper, a supporting plate is fixedly connected to one side of the paper, an enzyme sheet is arranged on the supporting plate, a first film is arranged at the upper end of the enzyme sheet, the first film is adhered to the top of the supporting plate, and the first film covers the enzyme sheet. The first film is larger than the supporting plate. A groove is formed in the other side of the paper, and a second film is arranged at the upper end of the annular ring, pasted to the annular ring and used for blocking an upper end opening of the annular ring. According to the pesticide residue detection card disclosed by the invention, the first film is adhered to the top of the supporting plate, covers the enzyme sheet and is used for protecting the enzyme sheet from external pollution; the second film is adhered to the annular ring to block the upper port of the annular ring, so that the substrate sheet and a possible reaction area are protected from external pollution, the detection accuracy is improved, the quality guarantee period of the detection card is prolonged, and the use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection technology, and in particular to a pollution-proof pesticide residue detection card. Background Technology

[0002] Pesticide residue test cards are a convenient tool for rapidly detecting pesticide residues in food (such as vegetables, fruits, grains, etc.). Through chemical reactions or immunological principles, they provide semi-quantitative or qualitative test results in a short time.

[0003] Existing pesticide residue detection cards include enzyme strips and substrate strips. The enzyme strips are impregnated with cholinesterase or other enzymes sensitive to organophosphates and carbamate pesticides. Cholinesterase is the key catalyst in the detection card. The substrate strips contain specific substrates, such as 2,6-dichlorophenolindoacetate, which undergo hydrolysis under the catalysis of cholinesterase. However, existing pesticide residue detection cards lack protective structures for the enzyme and substrate strips, leading to external contamination. Contamination may inhibit or enhance enzyme activity, resulting in detection results that do not match the actual pesticide residue levels. To address this issue, we propose a contamination-resistant pesticide residue detection card. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing pesticide residue detection cards do not have protective structures for enzyme and substrate sheets, and to propose a pollution-proof pesticide residue detection card.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pesticide residue detection card for pollution prevention includes paper with a crease in the middle and a tray fixedly connected to one side of the paper. An enzyme sheet is disposed on the tray, and a first film is disposed on the upper end of the enzyme sheet. The first film is pasted on the top of the tray and covers the enzyme sheet. The area of ​​the first film is larger than that of the tray.

[0007] A groove is provided on the other side of the paper, and an annular washer is fixedly connected in the groove. A heat-conducting plate is fixedly connected in the groove and supported on the annular washer. An annular ring is fixedly installed on the other side of the paper and surrounds the groove. A substrate is provided on the support plate, and a second film is provided on the upper end of the annular ring. The second film is pasted on the annular ring and seals the upper port of the annular ring.

[0008] Preferably, the area of ​​the second film is larger than that of the annular ring.

[0009] Preferably, two spaced magnets are fixedly installed on one side of the paper, and the magnets are flush with the top and bottom surfaces of the paper. Two iron blocks are fixedly installed on the other side of the paper, and the iron blocks are flush with the top and bottom surfaces of the paper. When the paper is folded, the magnets and iron blocks are attracted together.

[0010] Preferably, a mounting groove is provided at the bottom of the groove, and a heating strip is fixedly installed in the mounting groove.

[0011] Preferably, the bottom of the paper has an installation opening, in which a battery is fixedly installed. The battery is used to power the heating strip, and a switch is installed on the paper to control the on / off state of the heating strip circuit.

[0012] Preferably, a cover is provided at the mounting port, and the cover blocks the mounting port and is fixedly connected to the paper.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The pesticide residue detection card of this application features a first film adhered to the top of a tray, covering the enzyme tablet to protect it from external contamination; and a second film adhered to an annular ring, sealing its ports to protect the substrate tablet and potential reaction area from external contamination. By protecting the core reaction elements with the first and second films, detection accuracy is improved, the shelf life of the detection card is extended, and usage costs are reduced.

[0015] When the paper is folded, the magnet attracts the iron block, keeping the paper stable and ensuring full contact between the enzyme tablet and the substrate tablet. No manual pressing of the paper is required, improving the convenience of the detection operation. During the detection reaction, the heating strip operates and heats the groove. The heat is conducted to the heat-conducting plate, whose temperature rises and heats the reactants within the ring, providing a constant temperature environment for the reaction, accelerating the enzymatic reaction, and improving detection efficiency. Attached Figure Description

[0016] Figure 1 This invention provides a schematic diagram of the structure of a pollution-resistant pesticide residue detection card. Figure 1 ;

[0017] Figure 2 This invention provides a schematic diagram of the structure of a pollution-resistant pesticide residue detection card. Figure 2 ;

[0018] Figure 3 This is a partially enlarged schematic diagram of a pollution-resistant pesticide residue detection card proposed in this utility model;

[0019] Figure 4This is an enlarged cross-sectional view of a portion of the structure of the annular ring in a pesticide residue detection card for pollution prevention proposed in this utility model;

[0020] Figure 5 This utility model proposes a pollution-proof pesticide residue detection card. Figure 4 Enlarged diagram of point A in the diagram;

[0021] Figure 6 This is an exploded view of the annular ring in a pesticide residue detection card for pollution prevention proposed in this utility model.

[0022] In the diagram: 1. Paper; 2. Crease; 3. Tray; 4. Enzyme tablet; 5. First film; 6. Groove; 7. Annular washer; 8. Heat-conducting plate; 9. Annular ring; 10. Second film; 11. Magnet; 12. Iron block; 13. Mounting slot; 14. Heating strip; 15. Mounting port; 16. Battery; 17. Switch; 18. Cover. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Reference Figures 1-6 A pesticide residue detection card for pollution prevention includes a piece of paper 1 with a crease 2 in the middle and a tray 3 fixedly connected to one side of the paper 1. An enzyme sheet 4 is placed on the tray 3, and a first film 5 is provided on the upper end of the enzyme sheet 4. The first film 5 is pasted on the top of the tray 3 and covers the enzyme sheet 4. The area of ​​the first film 5 is larger than that of the tray 3.

[0026] A groove 6 is formed on the other side of the paper 1. An annular washer 7 is fixedly connected inside the groove 6, and a heat-conducting plate 8 is also fixedly connected inside the groove 6. The heat-conducting plate 8 is supported on the annular washer 7. An annular ring 9 is fixedly installed on the other side of the paper 1, surrounding the groove 6. A substrate is provided on the heat-conducting plate 8, and a second film 10 is provided on the upper end of the annular ring 9. The second film 10 is adhered to the annular ring 9 and seals the upper port of the annular ring 9. The area of ​​the second film 10 is larger than that of the annular ring 9.

[0027] Paper 1 serves as the base carrier for the test card, with a crease 2 in the middle for easy folding. A tray 3 supports the enzyme tablet 4. The enzyme tablet 4 contains an enzyme sensitive to organophosphates and carbamates, and is a key reaction component of the test card. A first film 5 is adhered to the top of the tray 3, covering the enzyme tablet 4 and protecting it from external contamination.

[0028] A substrate sheet containing a specific substrate, such as 2,6-dichloroindophenol acetate, is placed on the heat-conducting plate 8. This substrate undergoes a hydrolysis reaction catalyzed by cholinesterase.

[0029] The sample to be tested (such as vegetables, fruits, etc.) is properly processed to extract the liquid sample containing pesticide residues. The extracted liquid sample is then dropped onto the substrate and placed within the annular ring 9, with the annular ring 9 preventing the liquid sample from flowing out.

[0030] Fold the paper 1 again so that the enzyme tablet 4 on the tray 3 is placed into the ring 9. If the sample does not contain organophosphates or carbamates, the cholinesterase will remain active and catalyze the hydrolysis of 2,6-dichloroindophenol acetate on the substrate tablet to produce blue 2,6-dichloroindophenol.

[0031] Negative result: If the pesticide residue in the sample is below the detection limit, the enzyme activity is not significantly inhibited, the substrate is fully hydrolyzed, and the substrate slide turns blue.

[0032] Positive result: If the pesticide residue in the sample exceeds the detection limit, the enzyme activity is inhibited, the substrate is not completely hydrolyzed, and the substrate slide appears white or light blue.

[0033] Concentration-related: The higher the pesticide residue, the stronger the enzyme activity inhibition and the lighter the color.

[0034] By attaching a second film 10 to the annular ring 9, the ports on the annular ring 9 are sealed to protect the substrate sheet (and any possible reaction area) from external contamination.

[0035] By setting the first film 5 and the second film 10 to protect the core reaction element, the detection accuracy is improved, the shelf life of the test card is extended, and the usage cost is reduced.

[0036] By setting the area of ​​the first film 5 to be larger than that of the tray 3, and the area of ​​the second film 10 to be larger than that of the annular ring 9, with the edges of the first film 5 extending beyond the tray 3 and the edges of the second film 10 extending beyond the annular ring 9, it is easier to tear off the first film 5 and the second film 10.

[0037] Based on Example 1, Example 2:

[0038] Reference Figures 2-6Two magnets 11 are fixedly installed on one side of the paper 1, spaced apart. The magnets 11 are flush with the top and bottom surfaces of the paper 1. Two iron blocks 12 are fixedly installed on the other side of the paper 1, and the iron blocks 12 are flush with the top and bottom surfaces of the paper 1. When the paper 1 is folded, the magnets 11 and the iron blocks 12 are attracted together.

[0039] During testing, fold the paper 1 so that the enzyme tablet 4 on the tray 3 is placed inside the ring 9. The magnet 11 and the iron block 12 are attracted together, which keeps the paper 1 in a stable folded state and ensures that the enzyme tablet 4 is in full contact with the substrate. There is no need to manually press the paper 1, which improves the convenience of the testing operation.

[0040] The groove 6 has a mounting slot 13 at its bottom, and a heating strip 14 is fixedly installed in the mounting slot 13. The bottom of the paper 1 has a mounting opening 15, and a battery 16 is fixedly installed in the mounting opening 15. The battery 16 supplies power to the heating strip 14. A switch 17 is installed on the paper 1 to control the on / off state of the heating strip 14's circuit. A cover 18 is provided at the port of the mounting opening 15, sealing the mounting opening 15 and fixing it to the paper 1. The cover 18 protects the battery 16 inside the mounting opening 15.

[0041] During the detection reaction, the heating strip 14 operates and heats the groove 6. The heat is conducted to the heat-conducting plate 8, and the temperature of the heat-conducting plate 8 rises, heating the reactants in the annular ring 9. This provides a constant temperature environment for the reaction, accelerates the enzymatic reaction, and improves the detection efficiency.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pollution-resistant pesticide residue detection card, comprising paper (1), characterized in that, A crease (2) is provided in the middle of the paper (1), and a tray (3) is fixedly connected to one side of the paper (1). An enzyme tablet (4) is provided on the tray (3), and a first film (5) is provided on the upper end of the enzyme tablet (4). The first film (5) is pasted on the top of the tray (3) and covers the enzyme tablet (4). The area of ​​the first film (5) is larger than that of the tray (3). A groove (6) is provided on the other side of the paper (1). An annular washer (7) is fixedly connected in the groove (6). A heat-conducting plate (8) is fixedly connected in the groove (6). The heat-conducting plate (8) is supported on the annular washer (7). An annular ring (9) is fixedly installed on the other side of the paper (1). The annular ring (9) surrounds the groove (6). A substrate is provided on the tray (3). A second film (10) is provided on the upper end of the annular ring (9). The second film (10) is pasted on the annular ring (9) and seals the upper port of the annular ring (9).

2. The anti-pollution pesticide residue detection card according to claim 1, characterized in that, The area of ​​the second film (10) is larger than that of the annular ring (9).

3. The anti-pollution pesticide residue detection card according to claim 1, characterized in that, Two magnets (11) are fixedly installed on one side of the paper (1), and the magnets (11) are flush with the upper and lower surfaces of the paper (1). Two iron blocks (12) are fixedly installed on the other side of the paper (1), and the iron blocks (12) are flush with the upper and lower surfaces of the paper (1). When the paper (1) is folded, the magnets (11) and the iron blocks (12) are attracted together.

4. The anti-pollution pesticide residue detection card according to claim 1, characterized in that, An installation groove (13) is provided at the bottom of the groove (6), and a heating strip (14) is fixedly installed in the installation groove (13).

5. A pesticide residue detection card for pollution prevention according to claim 4, characterized in that, The bottom of the paper (1) has an installation port (15), and a battery (16) is fixedly installed in the installation port (15). The battery (16) is used to power the heating strip (14). A switch (17) is installed on the paper (1), and the switch (17) is used to control the on / off of the heating strip (14) circuit.

6. The anti-pollution pesticide residue detection card according to claim 5, characterized in that, A cover (18) is provided at the port of the installation port (15), and the cover (18) blocks the installation port (15) and is fixedly connected to the paper (1).

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