A fast, low-cost, sensitive, selective, and non-laborious method based on functionalized magnetic nanoparticles, magnetic solid-phase extraction, and fluorescent carbon dots for the fluorimetric determination of copper in wines without prior sample treatment

Matheus H Costa, Danilo T S Ferreira, Jonathan E S Pádua,Julys P A Fernandes,Josué Carinhanha C Santos,Francisco Antônio S Cunha,Mario Cesar Ugulino Araujo

Food Chemistry（2021）

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摘要

•Development of a new method for Cu(II) determination in wines within 1 min.•Extraction/preconcentration/determination of Cu(II) without prior sample treatment.•Use of functionalized magnetic nanoparticles-FMNP and fluorescent carbon dots-FCD.•Functionalization of FMNP from Fe3O4@Al2O3 core–shell with PAN and SDS.•Synthetization of FCD from pineapple juice through hydrothermal carbonization.

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关键词

Magnetic nanoparticles,Magnetic solid-phase extraction,Analytical sample pretreatment,Fluorescent carbon dots,Red wines,Wine analysis

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