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Pressure adaptive dissolving carbon dioxide exploring electrode and preparation method

A carbon dioxide and detection electrode technology, applied in the direction of electrochemical variables of materials, etc., can solve the problems of difficult to accurately reflect the actual concentration of carbon dioxide, volatilization loss of dissolved gas components, etc., to improve anti-interference and durability, high mechanical strength and toughness Effect

Inactive Publication Date: 2007-02-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the volatility of carbon dioxide gas, it is difficult for conventional sampling analysis to accurately reflect the actual concentration of carbon dioxide in water, especially in deep seawater under high pressure. Due to the decrease in pressure during the use process, the dissolved gas components will inevitably lose volatilization.

Method used

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  • Pressure adaptive dissolving carbon dioxide exploring electrode and preparation method
  • Pressure adaptive dissolving carbon dioxide exploring electrode and preparation method
  • Pressure adaptive dissolving carbon dioxide exploring electrode and preparation method

Examples

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preparation example Construction

[0016] Ir / IrO 2 The electrode preparation method steps are as follows:

[0017] 1) Polish the surface of the iridium wire with a diameter of 0.1-0.6mm with sandpaper, scrub it with alcohol and cut it into an iridium wire with a length of 0.6-1.2cm, and weld one end of the iridium wire with gold wire, silver wire or copper wire, Physical connections as electrical signals;

[0018] 2) Dip the iridium wire into Na 2 o 2 In the melt, a black iridium oxide film is formed on the surface. After taking it out, cool it to room temperature, soak it in deionized water for 1-2 days, and dry it for later use;

[0019] 3) Dip a metal wire coated with iridium oxide film into a perfluorosulfonic acid resin solution with a concentration of 5-10% by weight, take it out and invert it to keep the coating thickness even, and dry it in an oven at 60°-80°C Then repeat 1 to 2 times;

[0020] 4) Put the iridium wire coated with perfluorosulfonic acid resin film in a container with nitrogen gas, r...

example 1

[0047] Example 1: Ir / IrO 2 Electrode production

[0048] 1) Take an Ir wire with a diameter of 0.6mm, polish its surface with sandpaper, scrub it with alcohol, cut it into a length of 1.2cm, and weld one end of the Ir wire with a gold wire with a diameter of 0.6mm as a physical connection of the electrical signal;

[0049] 2) Dip the Ir wire into Na 2 o 2 In the melt for 2 minutes, a black iridium oxide film is formed on the surface. After taking it out, cool it to room temperature, soak it in deionized water for 1 day, and dry it for later use;

[0050] 3) Dip in the Ir wire coated with the iridium oxide film to get a concentration of 5% perfluorosulfonic acid resin solution by weight, take it upside down, so that the excess solution flows towards the rear, to keep the coating thickness even, at 60 After drying in an oven at ℃, repeat twice;

[0051] 4) Put the Ir wire coated with perfluorosulfonic acid resin film in a container with nitrogen gas, raise the temperature to...

example 2

[0053] Example 2: Ir / IrO 2 Electrode production

[0054] 1) Take an Ir wire with a diameter of 0.1 mm, polish its surface with sandpaper, scrub it with alcohol and cut it into a length of 0.6 cm. Weld one end of the Ir wire with a silver wire with a diameter of 0.1 mm as a physical connection of the electrical signal;

[0055] 2) Dip the Ir wire into Na 2 o 2 In the melt for 5 minutes, a black iridium oxide film is formed on the surface. After taking it out, cool it to room temperature, soak it in deionized water for 2 days, and dry it for later use;

[0056] 3) Dip the perfluorosulfonic acid resin solution with a concentration of 10% by weight with the Ir wire coated with the iridium oxide film, take it upside down after taking it out, so that the excess solution flows towards the rear, to keep the coating thickness even, at 60 Repeat once after drying in an oven at ℃;

[0057] 4) Put the Ir wire coated with perfluorosulfonic acid resin film in a container with nitrogen g...

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Abstract

An exploring electrode of dissolved carbon dioxide in pressure adapting type is prepared as filling internal reference electrolyte solution in silicon rubber tube, using silica gel film as tube mouth, setting Ir / IrO2 electrode in said tube and using epoxy to seal tail end of tube.

Description

technical field [0001] The invention relates to a pressure-adaptive dissolved carbon dioxide detection electrode and a preparation method. Background technique [0002] Carbon dioxide is a biological and microbial metabolite, and an important component of natural fluids such as volcanoes, mud volcanoes, submarine hydrothermal fluids, and submarine hydrocarbon seepage. Total dissolved CO in aqueous media 2 Content is an important environmental assessment parameter, which is of great significance for understanding the activities of organisms and microorganisms in water, as well as the carbon cycle between the hydrosphere and the atmosphere. total dissolved CO 2 Assay is also one of the important parameters for understanding industrial fermentation and many chemical processes. Due to the volatility of carbon dioxide gas, it is difficult for conventional sampling analysis to accurately reflect the actual concentration of carbon dioxide in water, especially in deep seawater un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 叶瑛陈鹰韩沉花黄霞蒋淑华杨灿军金波秦华伟
Owner ZHEJIANG UNIV
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