Pillararene modification cyanide ion fluorescence detection test paper and preparation method thereof and detection method thereof

A technology of fluorescence detection and column aromatics, which is applied in fluorescence/phosphorescence, measuring device, material analysis by optical means, etc. It can solve the problem that cyanide ion concentration cannot be quantitatively judged, and achieve the effect of fast response speed.

Active Publication Date: 2019-04-19
WUHAN INSTITUTE OF TECHNOLOGY
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  • Application Information

AI Technical Summary

Problems solved by technology

Considering the advantages of low price, degradable, and easy regeneration of fiber paper materials, it is a simple and easy method to select filter paper as the solid carrier of the fluorescence sensor and make cyanide detection paper, but the existing detection paper can only Qualitative detection of cyanide ion, the concentration of cyanide ion cannot be quantitatively judged

Method used

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  • Pillararene modification cyanide ion fluorescence detection test paper and preparation method thereof and detection method thereof
  • Pillararene modification cyanide ion fluorescence detection test paper and preparation method thereof and detection method thereof
  • Pillararene modification cyanide ion fluorescence detection test paper and preparation method thereof and detection method thereof

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Embodiment 1

[0029] A kind of cyanide ion fluorescence detection test paper modified by pillar aromatic hydrocarbon, the specific preparation method is as follows:

[0030] 1) Oxidation of test paper: A quantitative filter paper was ultrasonically cleaned with THF, acetone, and purified water in sequence, 5 min each time, immersed in a 0.1 M sodium periodate aqueous solution, and immersed for 5 h at 40 °C in the dark, and 20 mL of ethyl acetate was added. Diol, continue to react for 1h, wash off excess ethylene glycol with water, and dry for use.

[0031] 2) Functionalization of column aromatics on the test paper: immerse the oxidized filter paper in 0.1M column aromatic THF solution, immerse the reaction at 50 °C for 10 h, then use THF and methanol to ultrasonically clean the filter paper in turn, and then immerse the cleaned filter paper in 0.5 M sodium borohydride methanol solution, immersed at 20 ° C for 1 h, ultrasonically cleaned with methanol, and dried for use.

[0032] 3) Fixatio...

Embodiment 2

[0035] A kind of cyanide ion fluorescence detection test paper modified by pillar aromatic hydrocarbon, the specific preparation method is as follows:

[0036] 1) Oxidation of test paper: The test paper is oxidized by the same method as step 1) in Example 1;

[0037] 2) Functionalization of column aromatics on the test paper: immerse the oxidized filter paper in 0.02M column aromatics dichloromethane / methanol (volume ratio 2:1) solution, react at 70°C for 15h, and ultrasonically clean the filter paper with dichloromethane and methanol. The cleaned filter paper was immersed in 0.1M sodium borohydride methanol solution, reacted at 30° C. for 3 h, ultrasonically cleaned with methanol, and dried for use.

[0038] 3) Fixation of the fluorescent indicator of the test paper: soak the filter paper functionalized with column aromatic hydrocarbons in 0.01M 10-methylacridine solution (the solvent is tetrahydrofuran), react at 30°C for 5 hours, ultrasonically clean with tetrahydrofuran, a...

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Abstract

The invention relates to a pillararene modification cyanide ion fluorescence detection test paper and a preparation method thereof and a detection method thereof. The cyanide ion fluorescence detection test paper is oxidized by the filter paper and placed in the pillararene solution for immersion treatment, then immersed in the sodium borohydride solution after washing, washed, dried, and then immersed in the 10-methyl acridine solution, after cleaning and drying, cyanide ions used for detecting the 10-3~10-7M concentration range are obtained. The method is advantaged in that the cyanide ion fluorescence detection test paper is used for detecting the cyanide ion concentration in the solution, the to-be-detected solution is dropped to the test paper for detection, through observing change of fluorescence intensity on the test paper, the cyanide ion concentration can be quantitatively detected through naked eyes, the response speed is fast, the result can be rapidly determined, and the cyanide ion concentration in the solution can be simply, conveniently, rapidly and economically detected.

Description

technical field [0001] The invention belongs to the technical field of environmental detection, and in particular relates to a column aromatic modified cyanide ion fluorescence detection test paper, a preparation method and a detection method thereof. Background technique [0002] Cyanide is a highly toxic substance used in large quantities in industrial processes such as electroplating, petrochemical, gold mining and metallurgy. Cyanide (CN - ) enters the human body through inhalation or skin absorption, combines with hemoglobin to form a stable complex, and then inhibits the mitochondrial respiratory chain, causing anaerobic metabolism in cells hypoxia, and accumulation of lactic acid in the blood. Finally, the combined effects of hypoxia and lactic acidosis disrupt the central nervous system, leading to respiratory arrest and death in humans. Cyanide can cause serious harm to the environment and human body whether it is leaked in industrial production or used as a weapo...

Claims

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Application Information

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IPC IPC(8): G01N21/64
CPCG01N21/6428
Inventor 刘慧胡甘霖沈建明
Owner WUHAN INSTITUTE OF TECHNOLOGY
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