Portable inorganic arsenic detection kit

Abstract

The utility model discloses a portable inorganic arsenic detection kit which comprises a kit body, a kit cover, a first accommodating part, a second accommodating part, a reagent bottle and an electrolytic tank, an electrolytic tank is arranged in the middle of the box body; the first accommodating part is arranged on the left side of the electrolytic tank; the second containing part is arranged on the right side of the electrolytic tank, the first containing part and the second containing part are used for containing the reagent bottles, and the reagent bottles are used for containing test solutions. The portable inorganic arsenic detection kit is simple in structure, complete in equipment and convenient to take and use, a to-be-detected sample is detected by using linear scanning anodic stripping voltammetry by combining with an electrochemical method, and inorganic arsenic can be detected more quickly and efficiently.

Description

Technical Field

[0001] The utility model relates to a test kit, in particular to a portable inorganic arsenic detection kit. Background Art

[0002] Inorganic arsenic, a form of arsenic, is a toxic substance. Its pure form resembles salt, sugar, flour, and gypsum, and can cause poisoning through accidental ingestion or misuse. Therefore, testing for inorganic arsenic is essential. Testing for inorganic arsenic requires a reagent kit to store the reagent bottles, necessitating a portable inorganic arsenic detection kit. However, common inorganic arsenic detection kits on the market are only used to store the reagents and lack detection capabilities. Furthermore, commonly used inorganic arsenic detection methods are not suitable for rapid on-site detection of inorganic arsenic, which, to a certain extent, affects the efficiency of inorganic arsenic detection.

[0003] Therefore, a new technology is urgently needed to replace the existing inorganic arsenic detection method to solve the above problems. Summary of the Invention

[0004] In view of this, the utility model proposes a portable inorganic arsenic detection kit, aiming to solve the problem of how to quickly detect inorganic arsenic in the kit.

[0005] In one aspect, a portable inorganic arsenic detection kit comprises:

[0006] box lid;

[0007] The box body has an electrolytic cell disposed in the center thereof;

[0008] A first accommodating portion is provided on the left side of the electrolytic cell;

[0009] The second accommodating portion is arranged on the right side of the electrolytic cell. The first accommodating portion and the second accommodating portion are used to place a plurality of reagent bottles, and the reagent bottles are used to contain test solutions.

[0010] Furthermore, at least two electrode sheets are placed in the electrolytic cell, and the electrode sheets are used to connect to an external power supply.

[0011] Furthermore, the electrode sheet is a screen-printed electrode sheet.

[0012] Furthermore, the first accommodation portion includes:

[0013] There are three first placement slots, which are arranged side by side in the same direction on the left side of the electrolytic cell. Magnetic bottles, extraction tubes and magnetic bead liquid bottles are placed in the three first placement slots respectively.

[0014] Furthermore, the second accommodation portion includes:

[0015] There are three second placement tanks, which are arranged side by side in the same direction on the right side of the electrolytic cell. The three second placement tanks are respectively equipped with pH regulating solution reagent bottles, inorganic arsenic extract solution reagent bottles and electrode modification solution reagent bottles.

[0016] Furthermore, a magnetic strip is applied on the inner bottom surface of the first placement groove, and the magnetic strip is used to absorb the magnetic bead liquid in the magnetic suction bottle.

[0017] Furthermore, at least two pairs of buckles are provided on the inner side of the box cover, and the two pairs of buckles are arranged side by side in the middle of the inner side of the box cover. Reagent sticks and suction tubes are respectively clamped in the two pairs of buckles. The reagent sticks are used to stir the solution to be tested, and the suction tubes are used to absorb the reagents.

[0018] Furthermore, a handle is provided on the outer top surface of the box cover for taking the box cover.

[0019] Furthermore, the upper portion of the magnetic bottle is an elliptical opening and the bottom is a flat bottom structure.

[0020] Furthermore, a liquid outlet is provided on the bottom surface of the electrolytic cell for discharging the detected solution.

[0021] Furthermore, the two electrode sheets serve as a cathode and an anode respectively.

[0022] Compared to existing portable inorganic arsenic detection kits, the present invention has the following advantages: an electrolytic cell is disposed in the middle of the box body, a first container is disposed on the left side of the electrolytic cell, and a second container is disposed on the right side of the electrolytic cell. Several reagent bottles are placed in the first and second containers, each containing a test solution. Inorganic arsenic detection is performed in the electrolytic cell using the reagents in the reagent bottles. This allows the present invention to mix and chemically separate the reagents and the sample to be tested to produce a working solution, which is then poured into the electrolytic cell for a chemical reaction. This makes it ideal for rapid on-site analysis, allowing the testing of a sample to be completed within minutes. This makes it easy to operate and enables rapid on-site detection of inorganic arsenic and accurate results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0024] Figure 1 A schematic structural diagram of an inorganic arsenic detection kit provided in an embodiment of the present invention;

[0025] Figure 2A top view of an inorganic arsenic detection kit provided in an embodiment of the present utility model;

[0026] Figure 3 A schematic structural diagram of a magnetic bottle provided in an embodiment of the present utility model;

[0027] Figure 4 A schematic diagram of the inner side structure of a box cover provided in an embodiment of the present utility model;

[0028] In the figure: 1-box body; 2-first accommodating portion; 21-first placement slot; 22-extraction tube; 23-magnetic suction bottle; 24-magnetic bead liquid bottle; 3-second accommodating portion; 31-second placement slot; 32-inorganic arsenic extraction solution reagent bottle; 33-PH adjustment solution reagent bottle; 34-electrode modification solution reagent bottle; 4-electrode sheet; 5-electrolytic cell; 51-liquid outlet; 6-magnetic strip; 7-box cover; 71-handle; 72-clip; 8-reagent stick; 9-pipette tube. DETAILED DESCRIPTION

[0029] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0033] See Figure 1 As shown, the utility model provides a portable detection kit, including a box body 1, a first accommodating portion 2, a second accommodating portion 3, an electrolytic cell 5 and a box cover 7.

[0034] Specifically, an electrolytic cell 5 is provided in the middle of the box body 1, the first accommodating part 2 is provided on the left side of the electrolytic cell 5, and is provided on the right side of the second accommodating part 3; the first accommodating part 2, the electrolytic cell 5 and the second accommodating part 3 are arranged in sequence from left to right in the box body 1, and the internal spaces of the first accommodating part 2, the electrolytic cell 5 and the second accommodating part 3 are independently arranged and not connected to each other; a plurality of reagent bottles are placed in the first accommodating part 1, and a plurality of reagent bottles are placed in the second accommodating part 3, and the above-mentioned reagent bottles are used to hold test solutions; the electrolytic cell 5 is used to detect the reagents in the reagent bottles; the box cover 7 is used to cover the box body 1, and the opening of the box body 1 fits within the lower edge of the box cover 7.

[0035] As can be seen, the above embodiment comprises an electrolytic cell 5 disposed in the middle of the box body 1, a first accommodating portion 2 disposed on the left side of the electrolytic cell 5, and a second accommodating portion 3 disposed on the right side of the electrolytic cell 5. A plurality of reagent bottles are placed in the first accommodating portion 2 and the second accommodating portion 3. The reagent bottles are used to hold test solutions. The reagents in the reagent bottles undergo an electrochemical reaction in the electrolytic cell 5 to achieve rapid detection of inorganic arsenic. This allows the present invention to achieve the purpose of rapid on-site detection of inorganic arsenic and obtain accurate inorganic arsenic test results, saving time and improving the efficiency of inorganic arsenic detection.

[0036] See Figure 1-Figure 3 As shown, in this embodiment, the first accommodating portion 2 includes a first placement groove 21 and a magnetic strip 6.

[0037] Specifically, there are three first placement slots 21, which are arranged side by side in the same direction on the first receiving portion 2 to the left of the electrolytic cell 5. Each of the three first placement slots 21 houses an extraction tube 22, a magnetic bottle 23, and a magnetic bead solution bottle 24. These three first placement slots 21 can be randomly positioned to house the extraction tube 22, magnetic bottle 23, and magnetic bead solution bottle 24. A magnetic strip 6 is applied to the inner bottom surface of the first receiving portion 2, i.e., the inner bottom surface of the three first placement slots 21 is covered with a magnetic strip 6.

[0038] Specifically, an extraction tube 22 is provided to hold the sample to be tested and the inorganic arsenic extract; a magnetic bottle 23 is provided to hold a mixture of the working solution, the pH regulating solution and the magnetic bead solution; the upper portion of the magnetic bottle 23 is an elliptical opening and the bottom is a flat bottom structure, and the flat bottom structure of the magnetic bottle 23 is provided to fully adsorb the magnetic beads; a magnetic bead liquid bottle 24 is provided to hold magnetic beads modified with special functional groups, and the magnetic beads modified with special functional groups can selectively adsorb and remove interfering substances in the supernatant, thereby avoiding their subsequent interference with the inorganic arsenic detection and improving the accuracy of the test results.

[0039] Specifically, the magnetic strip 6 is used to absorb the magnetic bead liquid in the magnetic bottle 23. By laying the magnetic strip 6, it is beneficial to allow the bottom of the magnetic bottle 23 to absorb the magnetic beads during use, thereby improving the separation and purification efficiency of inorganic arsenic.

[0040] In the specific implementation of the above embodiment, the magnetic beads modified with special functional groups can be any one of carboxyl magnetic beads, amino magnetic beads or thiourea magnetic beads, or a combination of at least two of them. For example, it can be a combination of carboxyl magnetic beads and amino magnetic beads, a combination of carboxyl magnetic beads and thiourea magnetic beads, a combination of amino magnetic beads and thiourea magnetic beads, or a combination of carboxyl magnetic beads, amino magnetic beads and thiourea magnetic beads.

[0041] See Figure 1 and Figure 2 As shown, in this embodiment, the second accommodating portion 3 further includes a second placement groove 31 .

[0042] Specifically, there are three second placement slots 31, and the three second placement slots 31 are arranged side by side in the same direction on the second accommodating portion 3 on the right side of the electrolytic cell; the three second placement slots 31 are respectively placed with inorganic arsenic extract reagent bottles 32, pH regulating liquid reagent bottles 33 and electrode modification liquid reagent bottles 34, and the three second placement slots 31 can randomly place inorganic arsenic extract reagent bottles 32, pH regulating liquid reagent bottles 33 and electrode modification liquid reagent bottles 34, so that during the inorganic arsenic detection process, the reagents can be taken quickly and conveniently.

[0043] Specifically, inorganic arsenic extraction solutions can be used to extract inorganic arsenic from the test solution. pH adjustment solutions can be used to adjust the pH value, making it easier for inorganic arsenic to be released from the sample, thereby improving extraction efficiency. Electrode modification solutions can be used to improve the chemical and physical properties of the electrode surface, thereby increasing the sensitivity of inorganic arsenic detection and addressing the interference of copper ions.

[0044] In the specific implementation of the above embodiment, the inorganic arsenic extract includes an inorganic acid solution and a reducing agent solution. To promote the simultaneous extraction and reduction of inorganic arsenic, the inorganic acid solution includes any one of nitric acid, perchloric acid, hydrochloric acid, sulfuric acid or acetic acid, or a combination of at least two of them, for example, it can be a combination of nitric acid and hydrochloric acid, a combination of nitric acid and sulfuric acid, or a combination of sulfuric acid and hydrochloric acid; the reducing agent solution includes any one of cysteine, ascorbic acid, thiourea, sodium thiosulfate or sodium sulfite, or a combination of at least two of them, for example, it can be a combination of cysteine and thiourea, a combination of cysteine and sodium thiosulfate, a combination of sodium thiosulfate and sodium sulfite, or a combination of thiourea and sodium sulfite.

[0045] See Figure 2 As shown, the electrolytic cell 5 in this embodiment further includes an electrode sheet 4 and a liquid outlet 51 .

[0046] Specifically, at least two electrode sheets 4 are provided and placed in the electrolytic cell 5. A liquid outlet 51 is provided on the inner bottom surface of the electrolytic cell 5, and a valve is provided on the liquid outlet 51. By providing the electrode sheets 4 instead of the traditional solid electrodes, it is connected to an external power source. By providing the liquid outlet 51, when the solution to be tested is being tested in the electrolytic cell, the valve of the liquid outlet 51 is closed. After the test in the electrolytic cell is completed, the liquid outlet valve 51 is opened to discharge the tested solution.

[0047] Specifically, at least two electrode sheets 4 are provided, serving as a cathode and an anode respectively. The anode is connected to the positive electrode of an external DC power supply via an external wire, and the cathode is connected to the negative electrode of an external DC power supply via an external wire, thereby providing conditions for the electrochemical reaction in the electrolytic cell 5. The two electrode sheets 4 are placed in the electrolytic cell 5 containing an electrode modification solution and a working solution, ensuring that the two electrode sheets 4 are completely immersed in the solution and a certain distance is maintained between the two electrodes. By providing the electrolytic cell 5, an electrochemical reaction platform is provided to electrolyze the sample solution to be tested. During the electrolysis process, as the concentration of inorganic arsenic changes, the electrode potential will also change accordingly. By using linear scanning anodic stripping voltammetry to monitor the change in electrode potential, inorganic arsenic can be qualitatively and quantitatively detected to meet the requirements of quickly and efficiently detecting inorganic arsenic in the sample to be tested. By providing a liquid outlet 51, after the detection is completed in the electrolytic cell 5, the liquid outlet 51 can discharge the detection solution, so as to facilitate the multiple use of the present invention in the later stage.

[0048] See Figure 1 and Figure 4 As shown, the box cover 7 in this embodiment further includes a buckle 71 , a handle 72 , a test tube rod 8 and a pipette 9 .

[0049] Specifically, a handle 72 is provided on the outer side of the box cover 7, and at least two pairs of clips 71 are provided, and the two pairs of clips 71 are provided side by side on the inner side of the box cover 7, and the reagent stick 8 and the suction tube 9 are respectively clamped on the two pairs of clips 71. By providing the handle 72, it is convenient to take the box cover 7; by providing the clip 71, the reagent stick 8 and the suction tube 9 are clamped, which facilitates saving the internal space of the test kit, improves the space utilization rate of the test kit, and makes the detection tools in the test kit more complete, which is faster and more efficient during detection. By providing the reagent stick 8 and the suction tube 9 on the inner side of the box cover, the extraction and mixing of the inorganic arsenic detection reagent are facilitated, saving time and improving the detection efficiency of inorganic arsenic.

[0050] When the portable inorganic arsenic detection kit in the above embodiment is used, the sample to be tested and the inorganic arsenic extract are added to the extraction tube 22, and stirred evenly with the reagent stick 9. The two automatically undergo a chemical extraction reaction, and after the extraction is completed, a supernatant is obtained.

[0051] Add the pH adjusting solution, magnetic bead solution and the clear solution obtained in the previous step into the magnetic bottle 23, stir with the reagent stick 9 to mix the three together, then place the magnetic bottle 23 into any of the first placement slots 21, wait for the bottom of the magnetic bottle 23 to fully absorb the magnetic beads for a certain period of time, and then magnetically separate them. The supernatant obtained is the sample solution to be tested, that is, the working solution;

[0052] Add the electrode modification solution to the electrolytic cell 5, then add the prepared working solution to carry out an electrochemical reaction, and use linear sweep anodic stripping voltammetry to detect inorganic arsenic in the product to be tested;

[0053] After obtaining the test results, open the liquid outlet valve to discharge the tested solution from the electrolytic cell.

[0054] The utility model obtains a working solution by mixing and chemically separating the reagents and the sample to be tested, and then pours the working solution into an electrolytic cell for chemical reaction. The utility model is very suitable for rapid on-site analysis and can quickly complete the detection of a sample within a few minutes. It is not only simple to operate, but also can quickly detect inorganic arsenic on-site and obtain accurate inorganic arsenic detection results.

[0055] Those skilled in the art will understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A portable inorganic arsenic detection kit, characterized in that: include: box lid; The box body has an electrolytic cell disposed in the center thereof; A first accommodating portion is provided on the left side of the electrolytic cell; The second accommodating portion is arranged on the right side of the electrolytic cell. The first accommodating portion and the second accommodating portion are used to place a plurality of reagent bottles, and the reagent bottles are used to contain test solutions.

2. The portable inorganic arsenic detection kit according to claim 1, characterized in that: At least two electrode sheets are placed in the electrolytic cell, and the electrode sheets are used to connect to an external power supply.

3. The portable inorganic arsenic detection kit according to claim 1, characterized in that: The first receiving portion includes: There are three first placement slots, which are arranged side by side in the same direction on the left side of the electrolytic cell. Magnetic bottles, extraction tubes and magnetic bead liquid bottles are placed in the three first placement slots respectively.

4. The portable inorganic arsenic detection kit according to claim 1, characterized in that: The second receiving portion includes: There are three second placement tanks, which are arranged side by side in the same direction on the right side of the electrolytic cell. The three second placement tanks are respectively equipped with pH regulating solution reagent bottles, inorganic arsenic extract solution reagent bottles and electrode modification solution reagent bottles.

5. The portable inorganic arsenic detection kit according to claim 3, characterized in that: A magnetic strip is provided on the inner bottom surface of the first placement groove, and the magnetic strip is used to absorb the magnetic bead liquid in the magnetic suction bottle.

6. The portable inorganic arsenic detection kit according to claim 1, characterized in that: At least two pairs of buckles are provided on the inner side of the box cover, and the two pairs of buckles are arranged side by side in the middle of the inner side of the box cover. Reagent sticks and suction tubes are respectively clamped in the two pairs of buckles. The reagent stick is used to stir the solution to be tested, and the suction tube is used to absorb the reagent.

7. The portable inorganic arsenic detection kit according to claim 1, characterized in that: A handle is provided on the outer top surface of the box cover for taking the box cover.

8. The portable inorganic arsenic detection kit according to claim 3, characterized in that: The upper part of the magnetic bottle is an elliptical opening, and the bottom is a flat bottom structure.

9. The portable inorganic arsenic detection kit according to claim 1, characterized in that: The bottom surface of the electrolytic cell is provided with a liquid outlet for discharging the detected solution.

10. The portable inorganic arsenic detection kit according to claim 2, characterized in that: The two electrode sheets serve as a cathode and an anode respectively.

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