pH-responsive dual-emission carbon dots for the ratiometric detection of organophosphorus pesticides in Brassica chinensis and Hg 2+in water

被引:4
作者
Wu, Huifang [1 ]
Wang, Qiqi [1 ]
Dong, Miaochen [1 ]
Liu, Xinyue [1 ]
Tang, Yanfeng [1 ]
机构
[1] Nantong Univ, Sch Chem & Chem Engn, Nantong Key Lab Intelligent & New Energy Mat, Nantong 226019, Peoples R China
基金
中国国家自然科学基金;
关键词
Organophosphorus pesticides; Dual-emission carbon dots; Ratiometric; Static quenching; LIQUID-CHROMATOGRAPHY; QUANTUM DOTS; MICROEXTRACTION; PERFORMANCE; BIOSENSOR; RESIDUE; PROBE;
D O I
10.1016/j.foodchem.2024.139755
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Accurate and rapid monitoring of organophosphorus pesticides (OPs) residues is crucial for regulating food safety. Herein, dual-emission carbon dots (de-CDs) were fabricated for the ratiometric detection of OPs and Hg2+. The de-CDs exhibited two emission peaks at 678 and 485 nm when excited with visible light. Interestingly, the fluorescence at 678 nm was significantly quenched by Hg2+ mainly because of the static quenching effect, whereas that at 485 nm exhibited a slight change. More significantly, the quenched fluorescence of the de-CDs recovered remarkably after introducing omethoate, diazinon and malathion. Accordingly, the ratiometric detection of the three OPs and Hg2+ was achieved with high selectivity and robust performance. In addition, the OPs residues assay in Brassica chinensis was successfully performed with satisfactory results. This study not only provides an attractive tool for the simple and rapid assay of OPs but also offers new insights into the fabrication of multi-functional carbon dots.
引用
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页数:10
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共 40 条
  • [1] Photoluminescence-Tunable Carbon Nanodots: Surface-State Energy-Gap Tuning
    Bao, Lei
    Liu, Cui
    Zhang, Zhi-Ling
    Pang, Dai-Wen
    [J]. ADVANCED MATERIALS, 2015, 27 (10) : 1663 - +
  • [2] Capsulation of AuNCs with AIE Effect into Metal-Organic Framework for the Marriage of a Fluorescence and Colorimetric Biosensor to Detect Organophosphorus Pesticides
    Cai, Yue
    Zhu, Hongshuai
    Zhou, Weichi
    Qiu, Ziyin
    Chen, Congcong
    Qileng, Aori
    Li, Kangshun
    Liu, Yingju
    [J]. ANALYTICAL CHEMISTRY, 2021, 93 (19) : 7275 - 7282
  • [3] Colorimetric and fluorescent sensors for detection of nerve agents and organophosphorus pesticides
    Chen, Qian
    Sun, Yudie
    Liu, Shengjun
    Zhang, Jian
    Zhang, Cheng
    Jiang, Hui
    Han, Xinya
    He, Lifang
    Wang, Suhua
    Zhang, Kui
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2021, 344
  • [4] Ultrasensitive Detection of Organophosphorus Pesticides Using Single-Molecule Conductance Measurement
    Dong, Xuejun
    Tang, Ziyun
    Zhang, Hua
    Hu, Yong
    Yao, Zhiyi
    Huang, Ruiyun
    Bai, Jie
    Yang, Yang
    Hong, Wenjing
    [J]. ANALYTICAL CHEMISTRY, 2023, 95 (26) : 9831 - 9838
  • [5] Carbon-Based Dots Co-doped with Nitrogen and Sulfur for High Quantum Yield and Excitation-Independent Emission
    Dong, Yongqiang
    Pang, Hongchang
    Yang, Hong Bin
    Guo, Chunxian
    Shao, Jingwei
    Chi, Yuwu
    Li, Chang Ming
    Yu, Ting
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2013, 52 (30) : 7800 - 7804
  • [6] Renal clearing carbon dots-based near-infrared fluorescent super-small nanoprobe for renal imaging
    Gao, Pengli
    Hui, Hui
    Guo, Chanjuan
    Liu, Yu
    Su, Ya
    Huang, Xiazi
    Guo, Kunxiong
    Shang, Wenting
    Jiang, Jingying
    Tian, Jie
    [J]. CARBON, 2023, 201 : 805 - 814
  • [7] Exciton energy transfer-based fluorescent sensor for the detection of Hg2+ through aptamer-programmed self-assembly of QDs
    Guo, Huan
    Li, Jingshuai
    Li, Yuewen
    Wu, Dan
    Ma, Hongmin
    Wei, Qin
    Du, Bin
    [J]. ANALYTICA CHIMICA ACTA, 2019, 1048 : 161 - 167
  • [8] Bifunctional Moderator-Powered Ratiometric Electrochemiluminescence Enzymatic Biosensors for Detecting Organophosphorus Pesticides Based on Dual-Signal Combined Nanoprobes
    He, Ying
    Hu, Fangxin
    Zhao, Jinwen
    Yang, Guomin
    Zhang, Yuanyuan
    Chen, Shihong
    Yuan, Ruo
    [J]. ANALYTICAL CHEMISTRY, 2021, 93 (25) : 8783 - 8790
  • [9] Jia XF, 2012, NANOSCALE, V4, P5572, DOI [10.1039/c2ib31319g, 10.1039/c2nr31319g]
  • [10] Enzyme-based optical biosensors for organophosphate class of pesticide detection
    Kaur, Jasvir
    Singh, Prabhat K.
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2020, 22 (27) : 15105 - 15119