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Method for quantitatively collecting phenol in aqueous environment and realizing stable existence of collected phenol

A quantitative collection and water environment technology, applied in the field of quantitative collection of phenol in the water environment and making the collected phenol stable, can solve the inevitable changes in the concentration or form of phenol pollutants, affecting the representativeness and accuracy of environmental monitoring results, Can not truthfully reflect the water quality and other issues

Active Publication Date: 2019-09-06
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of sample collection, storage and transportation, the concentration or form of phenol pollutants will inevitably change, and the authenticity of the sample will be lost, which will directly affect the representativeness and accuracy of the environmental monitoring results, and cannot truthfully reflect the water quality. Happening

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  • Method for quantitatively collecting phenol in aqueous environment and realizing stable existence of collected phenol

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Experimental program
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Effect test

Embodiment 1

[0051] Take 10 mg of a blend of nano-zero-valent iron (with a particle size between 10nm-100 μm) and activated carbon containing 0.1% (mass percentage) (that is, the nano-zero-valent iron in the blend is 0.1% by mass) After being put into the 0.22μm nylon membrane and placed in the water environment to be tested for a period of 4 to 72 hours, the amount of phenol accumulated during this period of time was measured by ultraviolet-visible spectroscopy. The phenol stability diagram during this period of time is shown in figure 1 Shown, and calculate the concentration of phenol in the monitored water environment.

Embodiment 2

[0053] Take 10 mg of a blend of nano-zero-valent iron (with a particle size between 10nm-100 μm) and activated carbon containing 0.5% (mass percentage) (that is, the nano-zero-valent iron in the blend is 0.5% by mass). After being placed in a 0.22 μm nylon membrane for a period of 4 to 72 hours in the water environment to be tested, the amount of phenol accumulated during this time period was measured by UV-visible spectroscopy, and the phenol concentration in the monitored water environment was calculated. concentration.

Embodiment 3

[0055] Take 10 mg of a blend of nano-zero-valent iron (with a particle size between 10nm-100 μm) and activated carbon containing 1% (mass percentage) (that is, the nano-zero-valent iron in the blend is 1% by mass) After being placed in a 0.22 μm nylon membrane for a period of 4 to 72 hours in the water environment to be tested, the amount of phenol accumulated during this time period was measured by UV-visible spectroscopy, and the phenol concentration in the monitored water environment was calculated. concentration.

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Abstract

The invention provides a method for quantitatively collecting phenol in an aqueous environment and realizing stable existence of collected phenol. The method comprises: step one, preparing a blendingobject of zero-valent metal powder and a functional material of a rapidly and efficiently combined phenol molecule; and step two, placing the blending object into a hydrogel that is capable of controlling phenol molecule diffusion effectively, does not make a chemical reaction with the phenol molecule, and cannot leak the blending object or a film with a certain aperture. Within certain time, thephenol diffused into the inner side is bonded with the blending object of the zero-valent metal powder and the functional material immediately based on the phenol diffusion effect in the film or hydrogel in a to-be-detected water system, so that a constant concentration gradient is formed between the internal and external interfaces of the film or hydrogel; and the zero-valent metal powder arranged at the inner side can protect the accumulated phenol from being affected by the dissolved oxygen and other oxidized substances in the aqueous environment, so that a problem of unstable phenol in thesampling process is solved.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of phenol environmental monitoring, and in particular relates to a method for quantitatively collecting phenol in a water environment and making the collected phenol exist stably. [0003] Background technique: [0004] Phenol is a protoplasmic poison and a pollutant that is harmful to water pollution. Under normal circumstances, if the phenolic compound contained in water exceeds 0.1 per thousand, the water cannot meet the drinking water standard and is harmful to the human body. In February 2012, a phenol pollution incident occurred in Jiangsu, which caused difficulties in drinking water and greatly affected the production and life of residents in the local and surrounding areas. The monitoring of phenol has attracted people's attention. [0005] Phenol is unstable, reductive and volatile, so it is best to measure it immediately after sampling. However, most samples cannot be analyzed on-site. Inst...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N21/25
CPCG01N1/28G01N21/25
Inventor 尤楠黄泽义裴志洋孟卓范洪涛
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY