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Medical type all-solid potassium ion selectivity sensor and preparation method thereof

A potassium ion, selective technology, applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of not easy to carry, high cost, cumbersome detection process, etc., to simplify the structure and production process, achieve integration and miniaturization , The effect of accurate and rapid response

Inactive Publication Date: 2012-08-15
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the disadvantages of the electrode structure of the potassium ion selective sensor in the traditional potassium ion concentration detection, the electrode structure is complex, the detection process is cumbersome, the cost is high, the volume is large, and it is not easy to carry. The traditional reference electrode with constant potential is omitted, and the general solid state electrode is not required. The electrolyte layer greatly simplifies the manufacturing process of the potassium ion selective sensor, the response is accurate and fast, small and light, easy to carry, suitable for mass production

Method used

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  • Medical type all-solid potassium ion selectivity sensor and preparation method thereof
  • Medical type all-solid potassium ion selectivity sensor and preparation method thereof
  • Medical type all-solid potassium ion selectivity sensor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Such as figure 1 ,Such as figure 2 and image 3 As shown, a medical all-solid-state potassium ion selective sensor includes a substrate 1, two potassium ion selective working electrodes arranged side by side with the same structure, an insulating layer 6 and a salt bridge 7;

[0044] The potassium ion selective working electrode comprises a conductive layer 2, a reaction electrode 3, a contact electrode 4 and a potassium ion sensitive membrane 5, and the conductive layers 2 of the two potassium ion selective working electrodes are covered side by side on the described substrate 1, and the two The reaction electrodes 3 of the potassium ion selective working electrodes are arranged side by side at one end of the respective conductive layers 2, and the contact electrodes 4 of the two potassium ion selective working electrodes are arranged side by side at the other end of the respective conductive layers 2, and each reaction electrode 3 is arranged side by side. Covered ...

Embodiment 2

[0049] (1) On the organic polymer material substrate, the conductive material is arranged in turn to form the conductive layer, the reaction electrode and the contact electrode of the two potassium ion selective working electrodes; the conductive silver paste is printed on the polyethylene substrate by screen printing technology to form side by side The conductive layer of each potassium ion selective working electrode, and then print conductive carbon paste at one end of each conductive layer to form two side-by-side reaction electrodes, and print conductive carbon paste at the other end of each conductive layer to form two side-by-side contact electrodes.

[0050] (2) Pretreat the surface of the reaction electrode with absolute ethanol to remove the floating dust on the surface, so that the surface is clean and the state is consistent;

[0051] (3) Weigh 3mg of valinomycin and 1mg of tetrakis(4-chlorophenyl)potassium borate in 1.5mL of 3% PVC in tetrahydrofuran (3g of PVC is ...

Embodiment 3

[0062] (1) On the organic polymer material substrate, the conductive material is arranged in turn to form the conductive layer, the reaction electrode and the contact electrode of the two potassium ion selective working electrodes; the conductive silver paste is printed on the polyethylene substrate by screen printing technology to form side by side The conductive layer of each potassium ion selective working electrode, then print conductive carbon paste at one end of each conductive layer to form two side-by-side reaction electrodes, and print conductive carbon paste at the other end of the conductive layer to form two side-by-side contact electrodes;

[0063] (2) pretreat the surface of the reaction electrode with absolute ethanol, remove the floating dust on the surface, and make the surface clean and uniform;

[0064] (3) Weigh 3 mg of valinomycin and 1 mg of sodium tetraphenylborate in 1.5 mL of 3% PVC in tetrahydrofuran (3 g of PVC is added to 100 ml of tetrahydrofuran), ...

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Abstract

The invention discloses a medical type all-solid potassium ion selectivity sensor and a preparation method thereof. The medical type all-solid potassium ion selectivity sensor comprises a substrate, two potassium ion selectivity working electrodes which are completely the same in structure and arranged side by side, an insulating layer and a salt bridge. Without a constant-potential reference electrode in the conventional sense, one of the two potassium ion selectivity working electrodes is used to be matched with a potassium standard solution to realize the function of a reference electrode, the complexity in preparation of the whole sensor is greatly reduced. Each of the two same potassium ion selectivity working electrodes comprises a conductive layer, a reaction electrode, a contact electrode and a potassium ion sensitive film. According to the invention, since the constant-potential traditional reference electrode and the electrolyte layer of a common solid-state electrode are not needed, the preparation process and flow of the all-solid potassium ion selectivity sensor are greatly simplified; and moreover, the all-solid potassium ion selectivity sensor has accurate and quick response, and is small and light, convenient to carry and suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of electrochemical sensors, in particular to a preparation method of a medical all-solid-state potassium ion selective sensor. Background technique [0002] Potassium is an indispensable constant element in the human body, and the potassium ion concentration in the general adult body is about 3.5-5.5mmol / L. The main function of potassium in the human body is to maintain acid-base balance, participate in energy metabolism and maintain normal neuromuscular functions. When the body is deficient in potassium, it will cause a decrease in energy and physical strength, and reduce heat resistance, making people feel tired and weak; in severe potassium deficiency, it can lead to acid-base balance disorders, metabolic disorders, arrhythmias, and even respiratory muscle paralysis and death. . Therefore, in the development of modern medicine, especially in the rescue of clinical critically ill patients, the detection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/28G01N27/333
Inventor 陈国松黄颖金青唐美华张之翼李成东
Owner NANJING UNIV OF TECH
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