4.7 Article

A novel fluorescent probe based on N, B, F co-doped carbon dots for highly selective and sensitive determination of sulfathiazole

期刊

SCIENCE OF THE TOTAL ENVIRONMENT
卷 759, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.scitotenv.2020.143432

关键词

N, B, F co-doped carbon dots; Fluorescence probe; Sulfathiazole; 1-Allyl-3vinylimidazolium tetrafluoroborate; Inner filter effect

资金

  1. National Natural Science Foundation of China [21876045, 21507023]
  2. Program for Innovative Research Team in Science and Technology in the University of Henan Province [20IRTSTHN011]
  3. Key Scientific Research Project Plan of Henan Province [20A610007]
  4. Science Fund for Distinguished Young Scholars of Henan Normal University [2020JQ05]

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A novel fluorescent probe based on N, B, F-CDs was successfully developed for highly sensitive and selective determination of STZ. The probe showed excellent spiked recoveries in various sample types, demonstrating its potential for environmental detection and monitoring.
The widespread occurrence of sulfathiazole (STZ) in the environment has raised concerns regarding the potential risks to ecosystem and human health. Thus, there is a need to develop facile and efficient methods for monitoring STZ. In this study, a novel fluorescent probe, based on N, B, F co-doped carbon dots (N, B, F-CDs), was developed for the highly sensitive and selective determination of STZ. The fluorescent N, B, F-CDs were prepared via a one-step hydrothermal method using malonate and 1-allyl-3-vinylimidazolium tetrafluoroborate ionic liquid as precursors. The obtained N, B, F-CDs exhibited excellent fluorescence response toward STZ due to the inner filter effect (IFE), which caused the fluorescence to be quenched. The fluorescent probe allowed the STZ concentration to be accurately determined with a low detection limit of 5.5 ng mL-1 in two wide linear ranges of 0.008-10 mu g mL(-1) and 10-45 mu g mL(-1). The practicability of the fluorescent probe was further validated in river water, soil, milk, and egg samples, and the satisfactory spiked recoveries of STZ ranged from 96.1 to 101.6%. The proposed fluorescent probe based on N, B, F-CDs can be easily prepared and possess high selectivity and sensitivity, thereby displaying its tremendous potential for the identification and determination of STZ in the environment. (C) 2020 Elsevier B.V. All rights reserved.

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