Test paper for detecting ammonia concentration in air as well as preparation and detection method thereof

A technology of ammonia concentration and air, applied in the direction of measuring devices, material analysis by observing the influence of chemical indicators, instruments, etc., can solve problems such as difficult to meet actual needs, achieve low production cost, simple production process, and convenient use Effect

Active Publication Date: 2018-09-14
沈阳中天星艺环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the measurement results of the gas sensor have high accuracy and small error, they are generally fixedly installed in the required position to indicate or

Method used

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  • Test paper for detecting ammonia concentration in air as well as preparation and detection method thereof

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Embodiment 1

[0052] A test paper for detecting the concentration of ammonia in the air, the schematic diagram of which is shown in figure 1 , the test paper for detecting the ammonia concentration in the air is the test paper loaded with bromocresol green, sulfuric acid and anionic surfactant, wherein, according to the content ratio, bromocresol green: sulfuric acid: anionic surfactant=0.14:0.94×10 -4 : 0.25×10 -3 ;

[0053] Described anionic surfactant is sodium lauryl sulfate.

[0054] The test paper for detecting the ammonia concentration in the air is a chromatographic filter paper strip loaded with bromocresol green, sulfuric acid and anionic surfactant, and its length is 80 mm, and its width is 4 mm.

[0055] A preparation method of a test paper for detecting ammonia concentration in air, comprising the following steps:

[0056] Step 1, prepare soaking solution

[0057] Dissolve bromocresol green in ethanol to obtain bromocresol green ethanol solution, then add a sulfuric acid so...

Embodiment 2

[0073] A test paper for detecting ammonia concentration in the air is a test paper loaded with bromocresol green, sulfuric acid and anionic surfactant, wherein, by mass ratio, bromocresol green: sulfuric acid: anionic surfactant = 0.08: 0.38 × 10 -4 : 0.04×10 -3 ;

[0074] Described anionic surfactant is sodium cetyl sulfate.

[0075] The test paper for detecting the ammonia concentration in the air is a chromatographic filter paper strip loaded with bromocresol green, sulfuric acid and anionic surfactant, and its length is 80 mm, and its width is 4 mm.

[0076] A preparation method of a test paper for detecting ammonia concentration in air, comprising the following steps:

[0077] Step 1, prepare soaking solution

[0078] Dissolve bromocresol green in ethanol to obtain bromocresol green ethanol solution, then add a sulfuric acid solution with a volume concentration of 20%, mix well, then add an anionic surfactant, mix, add ethanol to dilute to 100mL, and obtain Soaking so...

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Abstract

The invention relates to test paper for detecting the ammonia concentration in the air as well as preparation and a detection method thereof, and belongs to an environment monitoring technology. The test paper for detecting the ammonia concentration in the air is test paper loaded with bromocresol green, sulfuric acid and anionic surfactants, and is prepared from the following ingredients of bromocresol green, sulfuric acid and anionic surfactants according to the content ratio of (0.08 to 0.14):(0.38 to 0.94)*10<-4>:(0.04 to 0.5)*10<-3>. The preparation method comprises the following steps ofpreparing a soaking solution; putting the filter paper into the soaking solution to be soaked to obtain a soaked filter paper strip; performing encapsulation after drying or baking; obtaining the test paper for detecting the ammonia concentration in the air. One side of the test paper is sheared open and is put in a detection region; ammonia gas in the air in the detection region reacts with reagents in the test paper for detecting the ammonia concentration in the air; the color development length is read; the ammonia concentration in air in the detection region is obtained. The test paper has the advantages of high sensitivity, high accuracy, low manufacturing cost and simple operation.

Description

technical field [0001] The invention belongs to the environment monitoring technology, in particular to a test paper for detecting ammonia concentration in the air and a preparation and detection method thereof. Background technique [0002] Ammonia is a colorless, toxic and flammable gas with a strong pungent odor. It has chemical reduction properties and is an important basic chemical raw material and product. People are extremely sensitive to the ammonia content in the air. Ammonia in the air is easily soluble in water and is often adsorbed on the skin and mucous membranes of the human body, eye conjunctiva and mucous membranes of the respiratory tract and throat. Damage the mucosal epithelial tissue, make it easy for pathogenic microorganisms to invade, and weaken the body's resistance to disease. If the human body inhales a large amount of ammonia in a short period of time, clinical symptoms such as tearing, sore throat, hoarseness, cough, bloodshot sputum, chest tight...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78G01N2021/7759
Inventor 余萍王凌增张豪齐佳华许秋实
Owner 沈阳中天星艺环保科技有限公司
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