Color developing reagent and detector tube for detecting carbon monoxide, fabricating method and application thereof

A technology of carbon monoxide and chromogen, which is applied in the direction of analyzing materials through chemical reactions and observing the influence of chemical indicators on materials, etc., which can solve the problems of energy consumption, prolongation of analysis time, and bulky volume.

Inactive Publication Date: 2004-11-10
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have a disadvantage: the use of equipment is expensive, bulky, and requires energy. In many cases, it cannot be measured on the spot. It needs to be sampled first and then returned ...

Method used

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  • Color developing reagent and detector tube for detecting carbon monoxide, fabricating method and application thereof
  • Color developing reagent and detector tube for detecting carbon monoxide, fabricating method and application thereof
  • Color developing reagent and detector tube for detecting carbon monoxide, fabricating method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0025] Preparation of developer

[0026] The amount of palladium chloride, ammonium molybdate, concentrated sulfuric acid and distilled water in the following table are used to prepare the developer solution of every 100ml:

[0027] Example 1

[0028] The "observation phenomenon" in the table is to do the following experiment. Soak the pretreated silica gel in six small beakers filled with the six formula display agents in the above table. The dosage: 8ml silica gel and 6.5ml color developer fully soaked). After three hours, dry for one hour under the infrared lamp. When loading the tube, put the silica gel carrier into the two ends of the glass tube respectively, put the glass tube into the Erlenmeyer flask with CO for experiment, and you can see the color phenomenon .

Embodiment 7

[0030] The manufacture of the gas detection tube includes the following steps

[0031] (1) Pretreatment of silica gel: put the silica gel in the flask of the reflux device, add H with a volume ratio of 1:1 2 SO 4 -HNO 3 Mixed acid, the acid content should be higher than the surface of the silica gel, reflux in a boiling water bath for 8 hours, let it cool and pour off the acid solution, soak it in hot tap water, wash off the remaining acid, then soak it in boiling distilled water, and filter until the pH value of the distilled water soaked overnight is at Above 5, wash the silica gel and dry it in an oven at 120°C for 2 hours. After activation, seal it in a container and store it for later use;

[0032] (2) Preparation of developer

[0033] Weigh 0.1000g of palladium chloride and 0.1000g of ammonium molybdate in a 250ml beaker, add 30ml of distilled water and 12.5ml of concentrated H 2 SO 4 Dissolve, and dilute to 250ml with distilled water to make a developer solution. ...

Embodiment 8

[0099] Manufacture of gas detection tube and application of gas detection tube in carbon monoxide poisoning alarm

[0100] (1) Pretreatment of silica gel: put the silica gel in the flask of the reflux device, add H with a volume ratio of 1:1 2 SO 4 -HNO 3 Mixed acid, the acid content should be 3cm higher than the surface of the silica gel, reflux in a boiling water bath for 10 hours, let it cool and pour off the acid solution, soak in hot tap water, wash off the remaining acid, then soak in boiling distilled water, and filter until the pH value of the distilled water soaked overnight Above 5, wash the silica gel and dry it in a 120 oven for 2.5 hours. After activation, seal it in a container and store it for later use;

[0101] (2) Preparation of developer:

[0102] Weigh 0.3000g of palladium chloride and 0.1000g of ammonium molybdate in a 250ml beaker, add 30ml of distilled water and 12.5ml of concentrated H 2 SO 4 Dissolve, and dilute to 250ml with distilled water to ma...

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Abstract

The invention relates to a CO gas detecting developer, including the main components: palladium chloride, ammonium molybdate and vitriol oil, where every 100 ml developer contains 1-20ml vitriol oil, 0.01-1g palladium chloride, 0.01-1g ammonium molybdate, and the rest water. It also discloses a CO gas detecting tube, including glass tube, and silica gel dipping the developer, where the silica gel is placed in the glass tube. It also discloses application of the detecting tube. It integrates sampling with analyzing in one, can fast determine the concentration of CO gas and also play a role in alarming for CO poisoning. Compared with traditional analysis methods, it is convenient to operate, fast analyzes, and is not influenced by space size and power supply in the detected environment, etc; convenient to carry and beneficial to outdoor determination and large-area distributed determination; after used, the carrier and main developer can be recycled. Practice and experiment show the gas detecting tube has higher sensitivity and basically achieve design requirements.

Description

technical field [0001] The invention relates to a color developer for carbon monoxide, a gas detection tube containing the color developer, a method for making the gas detection tube and a method for using the gas detection tube. Background technique [0002] Carbon monoxide is an air pollutant that is very harmful to human health. The CO in the air comes from the flue gas emissions from incomplete combustion of coal used in industries such as steelmaking, coking, ironmaking, and oil refining, exhaust emissions from motor vehicles such as automobiles and motorcycles, and incomplete combustion of organic matter and household gas. CO is colorless, odorless and highly toxic. When people inhale it, it will combine with hemoglobin in human blood to form a stable complex, making hemoglobin lose the function of transporting oxygen. When the content of CO in the air reaches 100ppm (125mg / m 3 ), no symptoms, 400ppm (500mg / m 3 ) will appear headache, fatigue, nausea, dizziness and...

Claims

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Application Information

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IPC IPC(8): G01N21/78
Inventor 余倩陈新汧
Owner GUANGDONG UNIV OF TECH
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