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Phosphate ion carbon paste electrode and preparation method thereof

A phosphate ion, carbon paste electrode technology, applied in the field of chemical analysis and related sensors, can solve the problems of water eutrophication, water quality deterioration, threat to human living environment, etc., and achieve the effects of short response time, simple production and small size

Active Publication Date: 2011-05-18
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, once the total phosphorus content in the environmental water quality exceeds the standard, it is very likely to cause eutrophication of the water body, cause the water quality to deteriorate, and then threaten the living environment of human beings.

Method used

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  • Phosphate ion carbon paste electrode and preparation method thereof
  • Phosphate ion carbon paste electrode and preparation method thereof
  • Phosphate ion carbon paste electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment one: a kind of preparation method of phosphate ion carbon paste electrode, comprises the following steps:

[0027] (1) Weigh 30mg of graphite powder, 30mg of hydroxyapatite and 12mL of liquid paraffin;

[0028] (2) Clean the mortar and hammer used for grinding with deionized water, and dry them in an oven at 80°C;

[0029] (3) Put graphite powder, hydroxyapatite and liquid paraffin into a mortar, stir evenly with a medicine spoon, and grind with a hammer for 72 hours to fully mix graphite powder, hydroxyapatite and liquid paraffin to obtain chemical modification carbon paste;

[0030] (4) Fill the chemically modified carbon paste into the glass tube or tetrafluoroethylene tube. When filling, the chemically modified carbon paste is filled from the upper end of the glass tube or tetrafluoroethylene tube, and the lower end of the glass tube or tetrafluoroethylene tube is filled with a The barrier is blocked to prevent the chemically modified carbon paste from ...

Embodiment 2

[0037] Embodiment two: a kind of preparation method of phosphate ion carbon paste electrode, comprises the following steps:

[0038] (1) Weigh 10mg of graphite powder, 10mg of hydroxyapatite and 22mL of liquid paraffin;

[0039] (2) Clean the mortar and hammer used for grinding with deionized water, and dry them in an oven;

[0040] (3) Put graphite powder, hydroxyapatite and liquid paraffin into a mortar, stir evenly with a medicine spoon, and grind with a hammer for 96 hours to fully mix graphite powder, hydroxyapatite and liquid paraffin to obtain chemical modification carbon paste;

[0041] (4) Fill the chemically modified carbon paste into the glass tube or tetrafluoroethylene tube. When filling, the chemically modified carbon paste is filled from the upper end of the glass tube or tetrafluoroethylene tube, and the lower end of the glass tube or tetrafluoroethylene tube is filled with a The barrier is blocked to prevent the chemically modified carbon paste from falling ...

Embodiment 3

[0046] Embodiment three: a kind of preparation method of phosphate ion carbon paste electrode, comprises the following steps:

[0047] (1) Weigh 15mg of graphite powder, 15mg of hydroxyapatite and 17mL of liquid paraffin;

[0048] (2) Clean the mortar and hammer used for grinding with deionized water, and dry them in an oven;

[0049] (3) Put graphite powder, hydroxyapatite and liquid paraffin into a mortar, stir evenly with a medicine spoon, and grind with a hammer for 80 hours to fully mix graphite powder, hydroxyapatite and liquid paraffin to obtain chemical modification carbon paste;

[0050] (4) Fill the chemically modified carbon paste into the glass tube or tetrafluoroethylene tube. When filling, the chemically modified carbon paste is filled from the upper end of the glass tube or tetrafluoroethylene tube, and the lower end of the glass tube or tetrafluoroethylene tube is filled with a The barrier is blocked to prevent the chemically modified carbon paste from falling ...

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Abstract

The invention relates to a phosphate ion carbon paste electrode and a preparation method thereof. The preparation method comprises the following steps of: (1) weighing graphite powder, hydroxyapatite and liquid paraffin; (2) cleaning a mortar and a grinding hammer with deionized water and drying; (3) putting the graphite powder, the hydroxyapatite and the liquid paraffin into the mortar, and grinding by the grinding hammer to obtain chemically modified carbon paste; (4) filling the chemically modified carbon paste in a glass tube or a tetrafluoroethylene tube; (5) compacting the chemically modified carbon paste; (6) inserting a metallic conductor from the upper end of the glass tube or the tetrafluoroethylene tube which is filled with the chemically modified carbon paste; (7) polishing the surface of chemically modified carbon paste at the lower end of the glass tube or the tetrafluoroethylene tube on weighing paper; and (8) dipping a prepared carbon paste electrode into a monopotassium phosphate solution for activation to obtain the phosphate ion carbon paste electrode. The phosphate ion carbon paste electrode prepared by the invention is short in response time which is commonly smaller than 60s, and has the characteristics of small volume, low cost and simplicity of making.

Description

technical field [0001] The invention relates to a phosphate ion carbon paste electrode, in particular to a phosphate ion carbon paste electrode and a preparation method thereof, belonging to the field of chemical analysis and related sensors. Background technique [0002] Phosphorus is one of the essential elements for biological growth in nature, and it exists widely in nature in various forms. However, once the total phosphorus content in the environmental water quality exceeds the standard, it is very likely to cause eutrophication of the water body, cause the water quality to deteriorate, and then threaten the living environment of human beings. Therefore, the detection of total phosphorus content has become an important technical index in environmental water quality monitoring. [0003] The ion-selective electrode has the advantages of fast response speed, simple and convenient operation, strong anti-interference ability and low production cost, and is suitable for con...

Claims

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Application Information

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IPC IPC(8): G01N27/30
Inventor 周文晶王小龙杨少鹏余晓栋杨慧中胡惠新陈刚
Owner JIANGNAN UNIV