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Magnetic nanocomposite material as well as preparation and application thereof

A technology of magnetic nanometer and composite material, which is applied in the directions of alkali metal compounds, other chemical processes, chemical instruments and methods, etc. It can solve the problems that the pretreatment method cannot meet the requirements of instrument detection and matrix interference, and can overcome the problems of many matrix interference and matrix interference. The effect of little interference and good adsorption capacity

Inactive Publication Date: 2019-02-15
SHENYANG PHARMA UNIVERSITY
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] For trace or ultra-trace residual drugs in complex environments, a single pretreatment method often cannot meet the detection requirements of the instrument, such as large matrix interference

Method used

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  • Magnetic nanocomposite material as well as preparation and application thereof
  • Magnetic nanocomposite material as well as preparation and application thereof
  • Magnetic nanocomposite material as well as preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0066] Embodiment 1: Analysis and determination of 8 kinds of sulfa drugs in water sample

[0067] (1) Synthesis of polypyrrole-modified magnetic multi-walled carbon nanotubes

[0068] (1.1) Synthesis of magnetic multi-walled carbon nanotubes

[0069] Firstly, 4.18 g of ferric ammonium sulfate dodecahydrate and 1.70 g of ferrous ammonium sulfate were dissolved in 200 mL of water to obtain a clear solution, then 1.0 g of multi-walled carbon nanotubes were added, under the protection of nitrogen, ultrasound was added for 10 min while ammonia water was added to make the suspension The pH of the turbid solution was adjusted to 11. Subsequently, the resulting mixture was stirred at 50 °C for 30 min. After the mixture was cooled to room temperature, the magnetic material was separated from the mixture with a magnet, washed three times with pure water and ethanol, dried at 60°C for 10 h, and ground for further preparation of polypyrrole-modified magnetic multi-walled carbon nanotub...

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Abstract

The invention belongs to the technical field of safe detection of trace drug residues in a water environment, relates to a magnetic nanocomposite material as well as preparation and application thereof, particularly relates to a polypyrrole-modified magnetic multi-walled carbon nanotube as well as preparation and application thereof in detection of sulfonamides, and also provides a sensitive and reliable method for detecting sulfonamide residues in the water environment. The magnetic nanocomposite material provided by the invention is prepared by a method comprising the following steps: step (1) preparing the magnetic multi-walled carbon nanotube in an alkaline solution from a multi-walled carbon nanotube, ammonium ferric sulfate dodecahydrate and ammonium ferrous sulfate hexahydrate; andstep (2) preparing the polypyrrole-modified magnetic multi-walled carbon nanotube from the magnetic multi-walled carbon nanotube, pyrrole and ferric chloride under certain conditions. The prepared polypyrrole-modified magnetic multi-walled carbon nanotube can simultaneously detect eight sulfonamides in the water environment.

Description

technical field [0001] The invention belongs to the technical field of safe detection of trace drug residues in water environment, relates to a magnetic nanocomposite material and its preparation and application, in particular to a polypyrrole-modified magnetic multi-walled carbon nanotube and its preparation and application in the detection of sulfonamide drugs in the application. The invention also provides a sensitive and reliable detection method for sulfonamide drug residues in the water environment. Background technique [0002] Sulfonamides are the earliest artificially synthesized antimicrobials. They have broad antibacterial spectrum, stable curative effect, low cost and can increase the growth rate of animals. Therefore, they are widely used in animal husbandry, aquaculture and the treatment of human bacterial infectious diseases. These drugs can be discharged into environmental water bodies along with urine, feces, and breeding wastewater, causing safety hazards ...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/38
CPCB01J20/205B01J20/26B01J20/28009C02F1/285C02F2101/38C02F2101/40
Inventor 赵龙山袁旭灿熊志立高珣
Owner SHENYANG PHARMA UNIVERSITY
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