Method for separating and enriching sulfonamide antibiotics in water

A technology for separation and enrichment of sulfonamides, which is applied in material separation, analysis materials, measuring devices, etc., can solve problems such as long extraction time, shorten extraction time, improve extraction efficiency, and widen application prospects.

Active Publication Date: 2021-03-26
HENAN BUSINESS SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hollow fiber liquid membrane extraction technology is one of the most effective membrane separation technologies for the selective separation and recovery of environmental organic pollutants, but the mass transfer of analytes in this extraction technology is a diffusion process, and the extraction time required is generally longer

Method used

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  • Method for separating and enriching sulfonamide antibiotics in water
  • Method for separating and enriching sulfonamide antibiotics in water
  • Method for separating and enriching sulfonamide antibiotics in water

Examples

Experimental program
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Embodiment 1

[0030] A method for separating and enriching sulfa antibiotics in water, comprising the following steps:

[0031] (1) A polypropylene hollow fiber membrane of about 8 cm was cut, placed in acetone for 5 minutes, and air-dried for later use. The hollow fiber membrane was a polypropylene hollow fiber membrane with a wall thickness of 200 μm and a pore size of 0.2 μm.

[0032] (2) heat-sealing one end of the pretreated hollow fiber membrane, immersing it in an extraction solvent for 20 seconds, so that the pores of the fiber membrane are filled with the extraction solvent; the extraction solvent is n-octanol.

[0033] (3) Inject 20 μL of receptor solution into the inner cavity of the hollow fiber membrane with a microsyringe, and the receptor solution is a NaOH solution with a pH of 12.

[0034] (4) Submerge the closed end of the hollow fiber membrane treated in step (3) in a sample bottle filled with 5mL of an aqueous solution (sample solution) containing 10mg / L sulfamethazine a...

Embodiment 2

[0037] The content of embodiment 2 is basically the same as embodiment 1, and its difference is:

[0038] The extraction solvent adopted in step (2) is tributyl phosphate.

Embodiment 3

[0040] The content of embodiment 3 is basically the same as embodiment 1, and its difference is:

[0041] The extraction solvent adopted in the step (2) is 2-nitrophenyloctyl ether.

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Abstract

The invention relates to the field of separation of organic pollutants in a water environment, and particularly discloses a method for separating and enriching sulfonamide antibiotics in water. The method comprises the following steps: 1) sealing one end of a hollow fiber membrane, and loading an extraction solvent on the hollow fiber membrane; 2) injecting a receptor solution into the inner cavity of the hollow fiber membrane; 3) immersing the closed end of the hollow fiber membrane treated in the step 2) in a water sample, inserting a working electrode into the water sample, inserting a counter electrode into the receptor solution, applying voltage to the working electrode and the counter electrode to form an electric field, and extracting sulfonamide antibiotics in the water sample under the action of the electric field; and 4) after the extraction is finished, collecting the receptor solution in the hollow fiber membrane to finish the separation and enrichment of the sulfonamide antibiotics in the water sample. The method disclosed by the invention has the advantages of small organic solvent consumption, high mass transfer rate, high sulfonamide antibiotic recovery rate and wide application prospect.

Description

technical field [0001] The invention relates to the field of separation of organic pollutants in water environment, in particular to a method for separating and enriching sulfonamide antibiotics in water. Background technique [0002] Sulfonamide antibiotics are a class of artificially synthesized antibacterial drugs, which have been widely used to treat bacterial infectious diseases in humans and animals because of their broad antibacterial spectrum, stable properties, and ease of use. Studies have shown that sulfonamide antibiotics are stable in nature and can produce strong biological effects even at very low exposure concentrations, seriously endangering human health and ecological safety. my country is a big country in the production and consumption of antibiotics. The long-term abuse of sulfonamide antibiotics will easily lead to the increase of bacterial resistance and the decline of antibacterial efficacy. Sulfa antibiotics are a kind of organic pollutants with high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/08G01N30/34G01N30/86
CPCG01N30/02G01N30/06G01N30/08G01N30/34G01N30/8675G01N2030/062
Inventor 万丽斌高海东刘晓高火亮杜瑞
Owner HENAN BUSINESS SCI RES INST
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