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A Fluorescence Method Based on N, S-Doped Carbon Dots for Detection of Ammonia in Aquaculture Water and Freshness of Fish

Author

Listed:
  • Jiaran Zhang

    (Beijing Agricultural Information Technology Research Center, Beijing 100097, China
    National Engineering Laboratory for Agricultural Product Quality and Safety Traceability Technology and Application, Beijing 100097, China)

  • Zeyu Xu

    (Beijing Agricultural Information Technology Research Center, Beijing 100097, China
    National Engineering Laboratory for Agricultural Product Quality and Safety Traceability Technology and Application, Beijing 100097, China)

  • Ce Shi

    (Beijing Agricultural Information Technology Research Center, Beijing 100097, China
    National Engineering Laboratory for Agricultural Product Quality and Safety Traceability Technology and Application, Beijing 100097, China)

  • Xinting Yang

    (Beijing Agricultural Information Technology Research Center, Beijing 100097, China
    National Engineering Laboratory for Agricultural Product Quality and Safety Traceability Technology and Application, Beijing 100097, China)

Abstract

Excessive ammonia can cause the death of fish and the eutrophication of the water environment, so ammonia detection is essential for environmental monitoring. In this study, a highly selective sensing strategy for ammonia detection based on N, S co-doped carbon dots (N, S-CDs) was developed. The as-prepared N, S-CDs exhibited excellent photoluminescence properties and fluorescent stability. N, S-CDs demonstrated fluorescence quenched in the presence of ammonia in the wide linear range of 2–80 mmol/L, and were highly selective towards ammonia over metal ions. Furthermore, a possible fluorescence quenching mechanism is proposed. N, S-CDs were further applied to detection of ammonia in aquaculture water samples and river water samples, showing good practicability with recoveries from 0.93 to 1.27 and relative standard deviations (RSDs) of 0.54% to 17.3%. N, S-CDs were also successfully used to determine the freshness of bighead carps.

Suggested Citation

  • Jiaran Zhang & Zeyu Xu & Ce Shi & Xinting Yang, 2021. "A Fluorescence Method Based on N, S-Doped Carbon Dots for Detection of Ammonia in Aquaculture Water and Freshness of Fish," Sustainability, MDPI, vol. 13(15), pages 1-14, July.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:15:p:8255-:d:600211
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    References listed on IDEAS

    as
    1. Chien-Che Huang & Hsiao-Ling Lu & Yuan-Hsiou Chang & Tsung-Hsien Hsu, 2021. "Evaluation of the Water Quality and Farming Growth Benefits of an Intelligence Aquaponics System," Sustainability, MDPI, vol. 13(8), pages 1-15, April.
    2. Jingya Ban & Bing Ling & Wei Huang & Xiaobo Liu & Wenqi Peng & Jianmin Zhang, 2021. "Spatiotemporal Variations in Water Flow and Quality in the Sanyang Wetland, China: Implications for Environmental Restoration," Sustainability, MDPI, vol. 13(9), pages 1-16, April.
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