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A kit for detecting environmental pollutants and its detection method

A technology for detecting the environment and kits, which is applied in the field of analysis and detection and fluorescent materials, and can solve problems such as damage to human health, air pollution, water sources and land

Active Publication Date: 2020-04-07
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, excessive ammonia, organic amines and inorganic anions pollute air, water and land, and damage human health

Method used

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  • A kit for detecting environmental pollutants and its detection method
  • A kit for detecting environmental pollutants and its detection method
  • A kit for detecting environmental pollutants and its detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The cellulose acetate-phenanthroline used in Example 1 was prepared by the method in the reference ACS Appl. Phenanthroline (Phen) was dissolved in 10 mL N,N-dimethylformamide (DMF), and the Phen / DMF solution was added dropwise to 4,4′-diphenylmethane diisocyanate (1.14 g) / DMF solution , 60 ℃ reaction 3h. Raise the temperature to 80°C, add 2-3 drops of dibutyltin dilaurate and cellulose acetate (1.5g) / DMF solution, and react for 12h. Ethanol was used as a precipitating agent and a detergent, washed 3 times with ethanol, filtered, and dried to obtain cellulose acetate-phenanthroline (the degree of polymerization of the product was 300, the degree of acetyl substitution was 1.98, and the degree of substitution of phenanthroline was 0.72).

[0063] The fluorescent polysaccharide derivatives used in Examples 2-4 can all be prepared by referring to the same process as the above-mentioned documents.

[0064] Example 1

[0065] Dissolve 40.0mg of fluorescent polysaccharide ...

Embodiment 2

[0070] Dissolve 20.0mg of fluorescent polysaccharide derivative - cellulose-phenanthroline (cellulose polymer degree is 150, phenanthroline substitution degree is 0.90) (as shown in formula 2) in 1000mL dimethyl sulfoxide (DMSO) , and then diluted 100 times with DMSO, and the resulting solution was divided into 2 mL units to obtain a cellulose-phenanthroline kit.

[0071] Dissolve 20.0mg of fluorescent polysaccharide derivative——cellulose-phenanthroline (as shown in formula 2) and 2.0mg of malachite green in 1000mL of dimethyl sulfoxide (DMSO), then dilute 100 times with DMSO, the resulting solution The cellulose-phenanthroline / malachite green kit was obtained by dispensing in units of 2 mL.

[0072]

[0073] Add 10 μL of the sample to be tested (sodium sulfate, sodium nitrate, sodium chloride, sodium borate, sodium acetate, sodium bromide, Sodium phosphate, sodium dihydrogen phosphate, sodium carbonate, sodium nitrite, sodium sulfite, sodium bicarbonate) aqueous solution,...

Embodiment 3

[0076] Dissolve 30.0 mg of fluorescent polysaccharide derivative—starch-phenanthroline (the degree of substitution of acetyl group is 1.90, the degree of substitution of phenanthroline is 0.50) (as shown in formula 3) in 100 mL of N,N-dimethylformamide ( DMF), and then diluted 100-fold with DMF, and the resulting solution was divided into 2 mL units to obtain a starch-phenanthroline kit.

[0077]

[0078] Add 10 μL of aqueous solution of the sample to be tested (sample A: a mixture of sodium sulfate, sodium nitrate and sodium chloride; sample B: a mixture of sodium sulfate, sodium nitrate, sodium chloride and sodium phosphate) to this starch-phenanthroline kit ,Such as Figure 5 As shown, observe the color of the kit under visible light and 365nm fluorescent light: if it is dark yellow under visible light, then the sample to be tested is sample B.

[0079]Prepare sodium phosphate standard solutions (solvent: water) containing fixed concentrations of sodium sulfate, sodium ...

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Abstract

The invention relates to a kit for detecting environmental pollutants. The kit comprises a responsive fluorescent polysaccharide derivative and a solvent or a responsive fluorescent polysaccharide derivative, fluorescent dye, and a solvent. The responsive fluorescent polysaccharide derivative has a repeating structural unit shown by a formula I. According to the kit, various environmental pollutants such as ammonia, hydrazine hydrate, various organic amines like triethylamine, ethylenediamine, methylamine and aniline and negative ions like B4O7<2->, PO4<3->, and CO3<2->. With the kit, the concentration of a to-be-detected substance can be detected based on a standard curve. The kit is capable of realizing simultaneous visual detection of different environmental pollutants with high accuracy and low detection limit.

Description

technical field [0001] The invention belongs to the field of analysis and detection and fluorescent materials, and in particular relates to a kit for detecting environmental pollutants and a detection method thereof. Background technique [0002] Simple, rapid and accurate detection of the concentration of chemical substances is very important for the fields of chemical engineering, environmental monitoring, analysis and detection. Ammonia, organic amines and inorganic anions widely exist or are used in human production and life, and have important applications. However, excessive ammonia, organic amines and inorganic anions pollute air, water and land, and damage human health. Therefore, the simple, rapid and accurate detection of ammonia, organic amines and inorganic anions is of great significance to the environment and human society. [0003] The detection of chemical substances by fluorescence method has the advantages of simple operation, fast response, and visualiza...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6428G01N2021/6432G01N2021/6439
Inventor 张金明纳瓦兹哈克张军李锦阳
Owner INST OF CHEM CHINESE ACAD OF SCI
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