Ammonia gas detection reagent and preparation method thereof

A technology for detecting reagents and ammonia gas, which is applied in the direction of material analysis by observing the influence on chemical indicators, and analysis by making materials undergo chemical reactions, etc. It can solve the problems of easy contamination of the measurement blank value, increase in height, and strict operation. Achieve the effects of high sensitivity, simple operation method and accurate measurement results

Inactive Publication Date: 2015-10-28
DONGCHEN LEADER TESTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Colorimetry is further divided into Nessler's reagent colorimetry, indophenol blue colorimetry and nitrite colorimetry, etc. Among them, Nessler's reagent colorimetry and indophenol blue colorimetry are more accurate, but there are strict operations. , easy to pollute and increase the measured blank value, etc., need to be further improved to better measure ammonia

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of ammonia detection reagent, comprises the component of following mass parts:

[0020] 12 parts of sodium nitrite, 10 parts of indophenol blue, 8 parts of potassium iodide, 12 parts of polyethylene glycol, 7 parts of oxalic acid, 5 parts of potassium hydroxide, 7 parts of phosphorus trichloride and 40 parts of deionized water.

[0021] A preparation method of ammonia detection reagent, the preparation steps are as follows:

[0022] (1) Add the components into deionized water in sequence, heat in a water bath at 38°C, stir evenly, and prepare a premix;

[0023] (2) Put the premix obtained in step (1) into a venturi tube and mix evenly to obtain a clarified mixed solution;

[0024] (3) Place the obtained clarified mixed solution in a vacuum, let it stand for 6 hours, take it out, seal it, and obtain the ammonia gas detection reagent.

[0025] The sensitivity of the reagent to ammonia in the air was tested, and the results showed that the highest concentration of...

Embodiment 2

[0027] A kind of ammonia detection reagent, comprises the component of following mass parts:

[0028] 5 parts of sodium nitrite, 5 parts of indophenol blue, 4 parts of potassium iodide, 5 parts of polyethylene glycol, 2 parts of oxalic acid, 2 parts of potassium hydroxide, 2 parts of phosphorus trichloride and 25 parts of deionized water.

[0029] A preparation method of ammonia detection reagent, the preparation steps are as follows:

[0030] (1) Add the components into deionized water in sequence, heat in a water bath at 38°C, stir evenly, and prepare a premix;

[0031] (2) Put the premix obtained in step (1) into a venturi tube and mix evenly to obtain a clarified mixed solution;

[0032] (3) Place the obtained clarified mixed solution in a vacuum, let it stand for 6 hours, take it out, seal it, and obtain the ammonia gas detection reagent.

[0033] The sensitivity of the reagent to ammonia in the air was tested, and the results showed that the highest concentration of am...

Embodiment 3

[0035] A kind of ammonia detection reagent, comprises the component of following mass parts:

[0036] 6 parts of sodium nitrite, 6 parts of indophenol blue, 5 parts of potassium iodide, 7 parts of polyethylene glycol, 3 parts of oxalic acid, 3 parts of potassium hydroxide, 4 parts of phosphorus trichloride and 28 parts of deionized water.

[0037] A preparation method of ammonia detection reagent, the preparation steps are as follows:

[0038] (1) Add the components into deionized water in sequence, heat in a water bath at 38°C, stir evenly, and prepare a premix;

[0039] (2) Put the premix obtained in step (1) into a venturi tube and mix evenly to obtain a clarified mixed solution;

[0040] (3) Place the obtained clarified mixed solution in a vacuum, let it stand for 6 hours, take it out, seal it, and obtain the ammonia gas detection reagent.

[0041] The sensitivity of the reagent to ammonia in the air was tested, and the results showed that the highest concentration of am...

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PUM

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Abstract

The invention discloses an ammonia gas detection reagent and a preparation method thereof, and belongs to the technical field of gas detection. The reagent includes the following components by weight: 5-12 parts of sodium nitrite, 5-10 parts of indophenol blue, 4-8 parts of potassium iodide, 5-12 parts of polyethylene glycol, 2-7 parts of oxalic acid, 2-5 parts of potassium hydroxide, 2-7 parts of phosphorus trichloride and 25-40 parts of deionized water. A preparation method of the ammonia gas detection reagent is as follows: (1) preparing a premix solution; (2) acquiring a clear mixed liquor; (3) allowing standing in vacuum for 4-8 h and sealing to obtain the ammonia gas detection reagent. The ammonia gas detection reagent provided by the invention combines the advantages of Nessler reagent colorimetric method and indophenol blue colorimetric method, has the characteristics of high sensitivity, precise measurement result and simple operation method, and is suitable for determining the ammonia content of home or office, as well as farming industry environment.

Description

technical field [0001] The invention belongs to the technical field of gas detection, in particular to an ammonia detection reagent and a preparation method thereof. Background technique [0002] Ammonia is a colorless gas with a strong pungent odor, and is easily liquefied into a colorless liquid, which can be liquefied by pressurization at room temperature. It is easily soluble in water, ethanol and ether. It will be decomposed into nitrogen and hydrogen at high temperature, and has a reducing effect. It can be used to make liquid nitrogen, ammonia water, nitric acid, ammonium salts and amines, etc. [0003] In recent years, the rise of interior decoration and the introduction of various modern daily necessities have made indoor air pollution more and more serious. There are three main types of gas pollution in indoor air, namely ammonia, formaldehyde and radon, among which ammonia has a higher rate of exceeding the standard, ranking first in pollution. [0004] Because...

Claims

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Application Information

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IPC IPC(8): G01N21/78
Inventor 熊开胜张海防谢建庭
Owner DONGCHEN LEADER TESTING
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