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A kind of preparation method of dissolved oxygen fluorescent sensing film

A fluorescent sensing film, dissolved oxygen technology, applied in fluorescence/phosphorescence, material analysis by optical means, material excitation analysis, etc., can solve the problems of reduced fluorescence intensity, water hazard, carcinogenicity, etc. The effect of stability, excellent stability

Active Publication Date: 2022-01-11
XIAMEN STANDARDS SCI INSTR
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Problems solved by technology

Common polycyclic aromatic hydrocarbons include pyrene, pyrene butyric acid, etc., but the fluorescence intensity of such indicators will decrease after a period of time, and pyrene derivatives are generally carcinogenic and teratogenic, and will emit toxic gases when heated. Extremely harmful, even a small amount will pollute groundwater and drinking water, and once it enters the organism, it will interfere with the normal reproduction of cells

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  • A kind of preparation method of dissolved oxygen fluorescent sensing film
  • A kind of preparation method of dissolved oxygen fluorescent sensing film

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Embodiment Construction

[0043] 1. Solution preparation of fluorescent substances: Weigh 11.5mg of tris(2,2'-bipyridine) ruthenium dichloride, add 100mL of ethanol, dissolve it by ultrasonic, and prepare 0.018mol / L tris(2,2'-bipyridine) Ruthenium dichloride [Ru(bpy) 3 Cl 2 ] ethanol solution;

[0044] 2. Preparation of matrix solution: Weigh 2g of polyvinyl chloride, add 10mL of acetone, ultrasonically dissolve part of it, and vibrate on an oscillator for 2 hours until it is completely dissolved, as a polymer solution;

[0045] 3. Synthesis of silica nanoparticles (SiO 2 ): Add 2mL tetraethyl orthosilicate (TEOS) to 25mL ethanol, add 1.5mL 25% ammonia / water solution, stir at a constant speed for 16 hours, centrifuge, wash and precipitate with ethanol three times, and obtain a white solid that is silica nanoparticles ;

[0046] 4. Mixing of raw materials: Add 12mL tris(2,2'-bipyridyl)ruthenium dichloride, 5.4mL polymer solution, 4.2g silicon dioxide, 2.5g aluminum oxide and 2mL poly Ethylene glyco...

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Abstract

The invention discloses a method for preparing a dissolved oxygen fluorescent sensing film, which comprises the following steps: 1) configuring 0.018mol / L tris(2,2'-bipyridine) ruthenium dichloride [Ru(bpy) 3 Cl 2 ] ethanol solution; 2) preparation of high molecular polymer solution: 3) synthesis of silica nanoparticles; 4) mixing of raw materials; 5) fluorescent film coating.

Description

technical field [0001] The invention relates to a preparation method of a dissolved oxygen fluorescent sensing film. Background technique [0002] Oxygen is an important element to maintain the survival of organisms, human and animal life activities, metabolism, etc., and requires aerobic participation in biological and chemical processes. Therefore, the development of an in-situ, fast and accurate measurement Dissolved oxygen instrumentation is essential. In terms of the marine environment, measuring water quality and studying the self-purification ability of water bodies are also based on the determination of dissolved oxygen content. [0003] The testing methods of dissolved oxygen are: iodometric method, electrode method and fluorescence quenching method. Iodometric method is the national standard method for measuring dissolved oxygen, but it has the disadvantages of cumbersome operation, long time-consuming, and inability to realize online measurement. The electrode ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/643G01N2021/6432
Inventor 汤新华柳小云高春芳
Owner XIAMEN STANDARDS SCI INSTR
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