首页|Designed 3D N-doped magnetic porous carbon spheres for sensitive monitoring of biogenic amine by simultaneous microwave-assisted derivatization and magnetic-solid phase extraction
Designed 3D N-doped magnetic porous carbon spheres for sensitive monitoring of biogenic amine by simultaneous microwave-assisted derivatization and magnetic-solid phase extraction
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NSTL
Elsevier
In this paper, the novel 3D N-doped magnetic porous carbon spheres (3D N-MPCSs) was constructed via a simple template-free and self-doping method, followed by a direct carbonization of polymer with Fe3+ for simultaneous activation and magnetization. For the first time, the designed 3D N-MPCSs was used as multifunctional (for extraction and magnetic separation) adsorbents for microwave-assisted derivatization and magnetic solid phase extraction, which exhibited excellent extraction ability for its large surface area, mesoporous structure, spherical morphology, and incorporation of N/O heteroatoms. Moreover, when the microwave-assisted derivatization was combined with the magnetic solid phase extraction, the extraction, derivatization and concentration was completed simultaneously within 135 s. Furthermore, this method has a low detection limit (0.059-0.073 ng mL(-1)) and high enhancement factors (333 < EFs < 382) for trace biogenic amine (BAs). The recoveries were between 92.3 and 108.8% with relative standard devia-tions less than 5.9%. Overall, a simple, rapid, efficient and sensitive method for the analysis of BAs in food samples was developed, which provided the basis for routine detection of food safety. (c) 2022 Elsevier B.V. All rights reserved.
NSTL
Elsevier
