Fluorescence detection of malachite green in fish tissue using red emissive Se,N,Cl-doped carbon dots

Carbon dots can be used for trace detection of malachite green in fish tissue

Yaoping Hu; Zhijin Gao; Junfei Luo

2020

Scholarcy highlights

  • Carbon dots can be used for trace detection of malachite green in fish tissue
  • Facile detection of malachite green, a toxic dye, in aquaculture is urgently demanded for environment and food safety
  • carbon dots are prepared by hydrothermal treatment of selenourea and o-phenylenediamine in HCl solution
  • A selective and sensitive fluorescent sensor toward MG is established based on inner filter effect, because both the excitation and emission light of CDs can be strongly absorbed by MG
  • The fluorescence quenching of CDs is linear to the MG concentration over the range of 0.07–2.50 μM with a low detection limit of 21 nM
  • Trace-level analysis of malachite green in fish tissue is successfully explored, demonstrating the great potential of the proposed sensor for MG monitoring in aquatic products

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