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Detection reagent for content of carbon monoxide in automobile tail gas and preparation method thereof

A technology for carbon monoxide and automobile exhaust, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions. It can solve the problems of low detection efficiency and insufficient sensitivity, and achieve simple operation and preparation. The effect of simple method

Inactive Publication Date: 2015-11-11
DONGCHEN LEADER TESTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the detection of carbon monoxide is mainly carried out with carbon monoxide detection kits, but the existing carbon monoxide detection reagents are not sensitive enough, and the detection efficiency is low, which still needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The reagent for detecting carbon monoxide content in automobile exhaust comprises the following components in parts by weight: 12 parts of p-carboxybenzenesulfonamide, 12 parts of hydrofluoric acid, 5 parts of sodium thiosulfate, 3 parts of sodium acetate, 1 part of ammonium molybdate, 1 part of cesium chloride, 1 part of absolute ethanol and 80 parts of water.

[0018] The concentration of the hydrofluoric acid is 25wt%.

[0019] The preparation method of the carbon monoxide content detection reagent in automobile exhaust comprises the following steps: according to the mass ratio, adding p-carboxybenzenesulfonamide into absolute ethanol, raising the temperature to 50°C, and then adding hydrofluoric acid and ammonium molybdate in sequence Wherein, stir evenly to obtain mixture A; add sodium thiosulfate, sodium acetate, and cesium chloride into water in turn, and stir uniformly to obtain mixture B; add mixture B to mixture A and stir evenly, to obtain the carbon monoxide...

Embodiment 2

[0021] The reagent for detecting carbon monoxide content in automobile exhaust comprises the following components in parts by weight: 14 parts of p-carboxybenzenesulfonamide, 13 parts of hydrofluoric acid, 6 parts of sodium thiosulfate, 4 parts of sodium acetate, 2 parts of ammonium molybdate, 2 parts of cesium chloride, 2 parts of absolute ethanol and 90 parts of water.

[0022] The concentration of the hydrofluoric acid is 26wt%.

[0023] The preparation method of the carbon monoxide content detection reagent in automobile exhaust comprises the following steps: according to the mass ratio, adding p-carboxybenzenesulfonamide to absolute ethanol, raising the temperature to 52°C, and then adding hydrofluoric acid and ammonium molybdate in sequence Wherein, stir evenly to obtain mixture A; add sodium thiosulfate, sodium acetate, and cesium chloride into water in turn, and stir uniformly to obtain mixture B; add mixture B to mixture A and stir evenly, to obtain the carbon monoxid...

Embodiment 3

[0025] The reagent for detecting carbon monoxide content in automobile exhaust comprises the following components in parts by weight: 15 parts of p-carboxybenzenesulfonamide, 13 parts of hydrofluoric acid, 6 parts of sodium thiosulfate, 4 parts of sodium acetate, 2 parts of ammonium molybdate, 2 parts of cesium chloride, 3 parts of absolute ethanol and 94 parts of water.

[0026] The concentration of the hydrofluoric acid is 27wt%.

[0027] The preparation method of the carbon monoxide content detection reagent in automobile exhaust comprises the following steps: according to the mass ratio, adding p-carboxybenzenesulfonamide into absolute ethanol, raising the temperature to 54°C, and then adding hydrofluoric acid and ammonium molybdate in sequence Wherein, stir evenly to obtain mixture A; add sodium thiosulfate, sodium acetate, and cesium chloride into water in turn, and stir uniformly to obtain mixture B; add mixture B to mixture A and stir evenly, to obtain the carbon monox...

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PUM

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Abstract

The invention provides a detection reagent for the content of carbon monoxide in automobile tail gas and a preparation method thereof. The detection reagent comprises the following components: carzenide, hydrofluoric acid, sodium thiosulfate, sodium acetate trihydrate, ammonium molybdate tetrahydrate, cesium chloride, absolute ethyl alcohol and water. The preparation method comprises the following steps: according to the weight ratio, adding sulfamide benzoic acid into absolute ethyl alcohol, increasing the temperature to 50-58 DEG C, adding hydrofluoric acid and ammonium molybdate tetrahydrate into the mixture, and stirring uniformly to obtain a mixture A; adding sodium thiosulfate, sodium acetate trihydrate and cesium chloride into water, and stirring uniformly to obtain a mixture B; and adding the mixture B into the mixture A and stirring uniformly to obtain the detection reagent for the content of carbon monoxide in the automobile tail gas. The detection reagent for the content of carbon monoxide in the automobile tail gas, prepared by the invention, is extremely sensitive for the detection of carbon monoxide, and can be used for detecting the carbon monoxide content within 30s. In addition, the preparation method is simple and feasible, the operation is simple and convenient, and the detection reagent can be promoted and used in a large range.

Description

technical field [0001] The invention relates to the field of detection reagents, in particular to a detection reagent for carbon monoxide content in automobile exhaust and a preparation method thereof. Background technique [0002] Carbon monoxide is an intermediate product of hydrocarbon fuel combustion. It is mainly produced due to the incomplete combustion of hydrocarbons under local anoxic or low temperature conditions, and is mixed with the exhaust gas of the internal combustion engine. If it cannot be fully burned, the carbon monoxide content in the exhaust gas will increase significantly. Carbon monoxide is a colorless, odorless, asphyxiating toxic gas with low chemical reactivity. Its relative density to air is 0.9670, and its solubility is very small. After carbon monoxide enters the blood of the human body through the respiratory tract, it will combine with the red blood protein Hb in the blood to form carboxyhemoglobin, resulting in a decrease in the oxygen-car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 熊开胜张海防谢建庭
Owner DONGCHEN LEADER TESTING