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A kind of water quality quaternary ammonium salt detection test paper and preparation method thereof

A technology for detecting test strips and quaternary ammonium salts, which is applied in the direction of analysis by chemical reaction of materials, and material analysis by observing the impact on chemical indicators, which can solve problems such as human body and environmental hazards.

Active Publication Date: 2016-08-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The determination methods of cationic surfactants reported in literature mainly include: spectrophotometry, atomic absorption spectrophotometry, fluorescence method, resonance scattering method, polarographic method, two-phase titration method, etc., except for two-phase titration method, other detection methods Both need to be carried out in the laboratory, and special instruments and technical personnel must be equipped to operate; and the two-phase titration method needs to use organic solvents, mainly chloroform products, and chloroform is a toxic organic solvent, which will cause harm to the human body and the environment. harm

Method used

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  • A kind of water quality quaternary ammonium salt detection test paper and preparation method thereof
  • A kind of water quality quaternary ammonium salt detection test paper and preparation method thereof
  • A kind of water quality quaternary ammonium salt detection test paper and preparation method thereof

Examples

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Embodiment 1

[0044] (1) Prepare 0.3% bromocresol green solution, 0.04% methylene blue solution, and a mixed solution containing 1.5% polyoxyethylene lauryl ether and 30% polyvinyl propionate with absolute ethanol.

[0045] (2) Prepare 0.1% methyl orange solution, 0.1% thymol blue solution, and a mixed solution containing 0.5% polyvinyl chloride and 0.05% polyvinylpyrrolidone with deionized water, respectively.

[0046] (3) Sodium sulfate acidic solution: Dissolve 10 g of anhydrous sodium sulfate in pure water, add 1.26 ml of 95% superior pure concentrated sulfuric acid, set the volume to 100 ml, and the pH value is about 2.6.

[0047] (4) Take glass fiber filter paper, soak it in sodium sulfate acidic solution for more than 5 minutes for acidification, and put it in an oven to dry at 60-90°C.

[0048] (5) Take 1 part of bromocresol green solution, put 0.5 part of methylene blue solution into 10 parts of mixed solution containing 1.5% lauryl polyoxyethylene ether and 30% polyvinyl propionate ...

Embodiment 2

[0065] (1) Prepare 0.3% bromocresol green solution, 0.04% methylene blue solution, and a mixed solution containing 1.5% polyoxyethylene lauryl ether and 30% polyvinyl propionate with absolute ethanol.

[0066] (2) Mixed solutions of 0.1% methyl orange solution, 0.1% thymol blue solution, 0.5% polyvinyl chloride and 0.05% polyvinylpyrrolidone were prepared respectively with deionized water.

[0067] (3) Sodium sulfate acidic solution: Dissolve 10 g of anhydrous sodium sulfate in pure water, add 1.26 ml of 95% superior pure concentrated sulfuric acid, and set the volume to 100 ml.

[0068] (4) Take glass fiber filter paper, soak it in sodium sulfate acidic solution for more than 5 minutes for acidification, and put it in an oven to dry at 60-90°C.

[0069] (5) Take 0.8 parts of bromocresol green solution, put 0.6 parts of methylene blue solution into 10 parts containing 1.5% lauryl polyoxyethylene ether and 30% polyvinyl propionate mixed solution and stir evenly; take 1.2 parts ...

Embodiment 3

[0077] (1) Prepare 0.3% bromocresol green solution, 0.04% methylene blue solution, and a mixed solution containing 1.5% polyoxyethylene lauryl ether and 30% polyvinyl propionate with absolute ethanol.

[0078] (2) Mixed solutions of 0.1% methyl orange solution, 0.1% thymol blue solution, 0.5% polyvinyl chloride and 0.05% polyvinylpyrrolidone were prepared respectively with deionized water.

[0079] (3) Sodium sulfate acidic solution: Dissolve 10 g of anhydrous sodium sulfate in pure water, add 1.26 ml of 95% superior pure concentrated sulfuric acid, and set the volume to 100 ml.

[0080] (4) Take glass fiber filter paper, soak it in sodium sulfate acidic solution for more than 5 minutes for acidification, and put it in an oven to dry at 60-90°C.

[0081] (5) Take 1.2 parts of bromocresol green solution, put 0.4 part of methylene blue solution into 10 parts of mixed solution containing 1.5% lauryl polyoxyethylene ether and 30% polyvinyl propionate and stir evenly; take 0.8 part...

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Abstract

The invention discloses a water quality quaternary ammonium salt detection test paper and a preparation method thereof. The preparation method comprises: taking required reagents, configuring them into solutions of different concentrations according to requirements, and then mixing different solutions of different concentrations into required mixtures according to different requirements. solution, the glass fiber filter paper is soaked in the corresponding mixed solution in turn, dried after each soaking and then immersed in the next mixed solution, and finally dried to obtain the detection test paper. The detection test paper of the present invention is immersed in the sample to be tested when used, and compared with a standard color card after being taken out, the concentration of the quaternary ammonium salt in the sample to be tested can be quickly measured. All reagents of the invention have no toxicity, do not cause harm to the environment, and realize rapid detection of water quality quaternary ammonium salts.

Description

technical field [0001] The invention relates to the technical field of water and waste water detection, in particular to a water quality quaternary ammonium salt detection test paper and a preparation method thereof. Background technique [0002] Cationic surfactants have a very wide range of uses, such as softeners and detergents in the textile industry, foaming agents, defoamers, thickeners, and fluorescent agents in the daily chemical industry, and as Disinfectants, emulsifiers, etc. With the widespread production and use of cationic surfactants, a large amount of wastewater containing surfactants is inevitably discharged into rivers, oceans and other natural water bodies. It not only directly endangers the aquatic environment, but also inhibits the degradation of other toxic substances, resulting in serious water pollution. Because cationic surfactants can produce strong toxicity to enzymes and coenzymes by interacting with biological cell membranes, and thus have an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 吴丹刘东红叶兴乾陈健初胡亚芹陈士国丁甜
Owner ZHEJIANG UNIV