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Li W, Sun C, Wang H, Bai Q, Xu Y, Bo C, Ou J. Detection and adsorption of florfenicol in milk using bifunctional carbon dot-doped molecularly imprinted polymers. Electrophoresis 2024. [PMID: 39034741 DOI: 10.1002/elps.202400053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/29/2024] [Accepted: 05/17/2024] [Indexed: 07/23/2024]
Abstract
Detection of florfenicol (FF) residues in animal-derived foods, as one of the most widely used antibiotics, is critically important to food safety. The fluorescent molecularly imprinted polymer (MIP) was synthesized by surface-initiated atom transfer radical polymerization technique with poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) microspheres, 4-vinylpyridine, ethylene glycol dimethacrylate, and FF as the matrix, functional monomer, crosslinker, and template molecule, respectively. Meanwhile, N-S co-doped carbon dot (CD) was synthesized with triammonium citrate and thiourea as precursors under microwave irradiation at 400 W for 2.5 min and then integrated into FF-MIP to obtain CD@FF-MIP. For comparison, non-imprinted polymer (NIP) without FF was also prepared. The adsorption capacity of CD@FF-MIP to FF reached 53.1 mg g-1, which was higher than that of FF-MIP (34.7 mg g-1), whereas the adsorption capacity of NIP was only 17.3 mg g-1. The adsorption equilibrium of three materials was reached within 50 min. Particularly, CD@FF-MIP exhibited an excellent fluorescence quenching response to FF in the concentration range of 3-50 µmol L-1. As a result, CD@FF-MIP was successfully utilized to extract FF in milk samples, which were analyzed by high-performance liquid chromatography. The standard recoveries were 95.8%-98.2%, and the relative standard deviation was 1.6%-4.2%. The method showed the advantages of simple operation, high sensitivity, excellent selectivity, and low cost, and also demonstrated a great application prospect in food detection.
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Affiliation(s)
- Weiyan Li
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, P. R. China
| | | | - Haiping Wang
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, P. R. China
| | - Qingyan Bai
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, P. R. China
| | - Yi Xu
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, P. R. China
| | - Chunmiao Bo
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, P. R. China
| | - Junjie Ou
- College of Chemistry and Materials Science, Northwest University, Xi'an, P. R. China
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
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Development of a fluorescence sensing assay based on N–S-doped carbon dots and molecularly imprinted polymer for selective and sensitive detection of florfenicol in milk. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-022-02684-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Yasmeen K, Nawaz S, Iqbal A, Siddiqui A, Umar AR, Muhammad H, Shafique M, Shah F, Tahir S, Khan AM, Masab M, Hanif M. Removal of Pb(II) from water samples using surface modified core/shell CdZnS/ZnS QDs as adsorbents: Characterization, adsorption, kinetic and thermodynamic studies. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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K. Algethami F, Saidi I, Ben Jannet H, Khairy M, Abdulkhair BY, Al-Ghamdi YO, Abdelhamid HN. Chitosan-CdS Quantum Dots Biohybrid for Highly Selective Interaction with Copper(II) Ions. ACS OMEGA 2022; 7:21014-21024. [PMID: 35935289 PMCID: PMC9347964 DOI: 10.1021/acsomega.2c01793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/17/2022] [Indexed: 05/02/2023]
Abstract
Cadmium sulfide (CdS) quantum dots (QDs) were homogeneously embedded into chitosan (CTS), denoted as CdS@CTS, via an in situ hydrothermal method. The intact structure of the synthesized materials was preserved using freeze-drying. The materials were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy, transmission electron microscopy, high-resolution TEM, scanning TEM, dispersive energy X-ray (EDX) for elemental analysis and mapping, Fourier transform infrared spectroscopy, nitrogen adsorption-desorption isotherms, thermogravimetric analysis, UV-vis spectroscopy, and diffuse reflectance spectroscopy (DRS). The synthesis procedure offered CdS QDs of 1-7 nm (average particle size of 3.2 nm). The functional groups of CTS modulate the in situ growth of CdS QDs and prevent the agglomeration of CdS QDs, offering homogenous distribution inside CTS. CdS@CTS QDs can also be used for naked-eye detection of heavy metals with high selectivity toward copper (Cu2+) ions. The mechanism of interactions between Cu2+ ions and CdS@CTS QDs were further studied.
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Affiliation(s)
- Faisal K. Algethami
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi Arabia
| | - Ilyes Saidi
- Laboratory
of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39),
Medicinal Chemistry and Natural Products Team, Faculty of Science
of Monastir, University of Monastir, Avenue
of Environment, Monastir 5019, Tunisia
| | - Hichem Ben Jannet
- Laboratory
of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39),
Medicinal Chemistry and Natural Products Team, Faculty of Science
of Monastir, University of Monastir, Avenue
of Environment, Monastir 5019, Tunisia
| | - M. Khairy
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi Arabia
| | - Babiker Y. Abdulkhair
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi Arabia
| | - Youssef O. Al-Ghamdi
- Department
of Chemistry, College of Science Al-zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia
| | - Hani Nasser Abdelhamid
- Department
of Chemistry, Advanced Multifunctional Materials Laboratory, Faculty
of Science, Assiut University, Assiut 71575, Egypt
- Nanotechnology
Research Centre (NTRC), The British University
in Egypt (BUE), Suez
Desert Road, El-Sherouk City, Cairo, 11837, Egypt
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Dolai J, Ali H, Jana NR. Selective capturing and fluorescence “turn on” detection of dibutyl phthalate using a molecular imprinted nanocomposite. NEW J CHEM 2021. [DOI: 10.1039/d1nj04169j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Fluorescence-based selective detection of dibutyl phthalate is achieved via a paper-strip-based approach.
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Affiliation(s)
- Jayanta Dolai
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata-700032, India
| | - Haydar Ali
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata-700032, India
| | - Nikhil R. Jana
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata-700032, India
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