A ratio fluorescence sensor based on rhodamine B embedded metal-organic framework for glyphosate detection in agri-food products.

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  • Additional Information
    • Source:
      Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 7702639 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-7072 (Electronic) Linking ISSN: 03088146 NLM ISO Abbreviation: Food Chem Subsets: MEDLINE
    • Publication Information:
      Publication: Barking : Elsevier Applied Science Publishers
      Original Publication: Barking, Eng., Applied Science Publishers.
    • Subject Terms:
      Metal-Organic Frameworks*; Fluorescence ; Glycine/analogs & derivatives ; Humans ; Rhodamines ; Glyphosate
    • Abstract:
      Glyphosate, a broad-spectrum and high-efficiency herbicide, could accumulate in the human body through the consumption of agri-food products. Herein, a ratio fluorescence sensor based on rhodamine B-embedded amino-functionalized iron-based metal-organic framework (MOF, NH 2 -MIL-88(Fe)@RhB) bonded with Cu 2+ was developed for rapid detection of glyphosate. The synthesized NH 2 -MIL-88(Fe) was a biconical prism and had a cavity for the embedding of RhB as a reference compound. In the presence of Cu 2+ , Lewis interactions with NH 2 -MIL-88(Fe)@RhB cause the fluorescence signal to be turned off. When glyphosate was added, the signal was turned on due to chelation with Cu 2+ and hydrogen bonding interactions with NH 2 -MIL-88(Fe)@RhB. Under optimal conditions, the developed sensor exhibited a linear range of 0.60-45 μmol L -1 with a response time of less than 1 min. The sensor was applied in the analysis of agri-food products (tea, soybean, wheat, cucumber), with recoveries between 97.93% and 109.06%, indicating its promising application in agri-food safety.
      (Copyright © 2022 Elsevier Ltd. All rights reserved.)
    • Contributed Indexing:
      Keywords: Agri-food products; Glyphosate; Metal-organic framework; Ratio fluorescence sensor; Rhodamine B
    • Accession Number:
      0 (Metal-Organic Frameworks)
      0 (Rhodamines)
      K7G5SCF8IL (rhodamine B)
      TE7660XO1C (Glycine)
    • Publication Date:
      Date Created: 20220624 Date Completed: 20220719 Latest Revision: 20231213
    • Publication Date:
      20250114
    • Accession Number:
      10.1016/j.foodchem.2022.133446
    • Accession Number:
      35749871