Magnetic solid-phase extraction material and preparation method and application thereof

Abstract

The invention discloses a magnetic solid-phase extraction material and a preparation method and application thereof. The preparation method includes the following steps that 1, ferroferric oxide is prepared; 2, magnetic ferromagnetic oxide nanometer carbon spheres are prepared: the ferroferric oxide prepared in the step 1 is dispersed in a glucose solution, reaction is performed at the temperature of 160-200 DEG C for 5-8 hours to obtain magnetic ferroferric oxide nanometer carbon spheres; 3, amino silanized magnetic nanometer carbon spheres are prepared: the magnetic ferroferric oxide nanometer carbon spheres prepared in the step 2 are dispersed in anhydrous ethanol, then (3-aminopropyl) triethoxy silane is added, and reaction is performed at the temperature of 30-60 DEG C for 6-30 hours to obtain the magnetic solid-phase extraction material. The preparation method is simple and safe and easy to implement, and the raw materials are cheap and easy to obtain. The prepared novel material serves as a magnetic solid-phase extraction adsorbent and is successfully applied to efficient separation and sensitivity analysis of bisphenol A, bisphenol AF, tetrabromobisphenol A and other polar environmental pollutants in the environment.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a magnetic solid-phase extraction material and its preparation method and application. Background technique [0002] With the rapid development of modern industry, the environmental pollution caused by bisphenols has attracted widespread attention all over the world. Such as bisphenol A, bisphenol AF and tetrabromobisphenol A, are widely used in modern industrial products, which leads to their widespread presence in the environment. These compounds can reduce sperm count, affect fertility and sexual maturity, and can also increase the risk of cancer. Therefore, in order to protect human health, it is very necessary to quickly analyze the pollution caused by these compounds and conduct risk assessment, and it is necessary to establish a fast, simple and sensitive analysis method. [0003] Due to the low concentration of bisphenols in the environment, it is very difficult...

AI Technical Summary

Problems solved by technology

[0004] Although the chemical co-precipitation method for preparing ferroferric oxide is relatively mature, the ferroferric oxide particles synthesized by it are relatively small, only more than ten nanometers, and the dispersion is poor, which is not conducive to the coating of the subsequent carbon layer and cannot be dispersed. Ferroferric oxide magnetic nano carbon spheres with better properties

Although there have been reports on the synthesis of silanized Fe3O4 nanoparticles, their applications are limited due to their poor stability in acid-base solutions or complex environmental matrices.

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