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Nie L, Li S, Gao X, Yuan S, Dong G, Tang G, Song D, Bu L, Zhou Q. Sensitive visual detection of norfloxacin in water by smartphone assisted colorimetric method based on peroxidase-like active cobalt-doped Fe 3O 4 nanozyme. J Environ Sci (China) 2025; 148:198-209. [PMID: 39095157 DOI: 10.1016/j.jes.2023.12.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/25/2023] [Accepted: 12/25/2023] [Indexed: 08/04/2024]
Abstract
Norfloxacin is widely used owing to its strong bactericidal effect on Gram-negative bacteria. However, the residual norfloxacin in the environment can be biomagnified via food chain and may damage the human liver and delay the bone development of minors. Present work described a reliable and sensitive smartphone colorimetric sensing system based on cobalt-doped Fe3O4 magnetic nanoparticles (Co-Fe3O4 MNPs) for the visual detection of norfloxacin. Compared with Fe3O4, Co-Fe3O4 MNPs earned more remarkably peroxidase-like activity and TMB (colorless) was rapidly oxidized to oxTMB (blue) with the presence of H2O2. Interestingly, the addition of low concentration of norfloxacin can accelerate the color reaction process of TMB, and blue deepening of the solution can be observed with the naked eye. However, after adding high concentration of norfloxacin, the activity of nanozyme was inhibited, resulting in the gradual fading of the solution. Based on this principle, a colorimetric sensor integrated with smartphone RGB mode was established. The visual sensor exhibited good linearity for norfloxacin monitoring in the range of 0.13-2.51 µmol/L and 17.5-100 µmol/L. The limit of visual detection was 0.08 µmol/L. In the actual water sample analysis, the spiked recoveries of norfloxacin were over the range of 95.7%-104.7 %. These results demonstrated that the visual sensor was a convenient and fast method for the efficient and accurate detection of norfloxacin in water, which may have broad application prospect.
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Affiliation(s)
- Linchun Nie
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Shuangying Li
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Xiaozhong Gao
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Shuai Yuan
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Guangyu Dong
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Guojin Tang
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Denghao Song
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Lutong Bu
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Qingxiang Zhou
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China.
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2
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Cheng C, Han M, Xiang G, Fu X, Wang X, Lu C. Bimetallic iron-copper nanozyme for determination and degradation of norfloxacin in foods. Food Chem 2024; 444:138667. [PMID: 38335686 DOI: 10.1016/j.foodchem.2024.138667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
Iron-copper nanozymes (Fe-Cu NZs) with good peroxidase activity were prepared through hydrothermal method by using copper nitrate as copper source, iron acetate as iron source and 2, 5-dihydroxyterephthalic acid as organic ligand. Upon oxidation of the colourless TMB to light blue products by Fe-Cu NZs, the addition of Norfloxacin (NOR) resulted in a colour change to dark blue. The absorbance of the system correlated linearly with NOR concentration in the range of 3.3 μM to 66 μM, and the detection limit (LOD) was 0.386 μM. A rapid colourimetric assay for the determination of NOR in food matrices was developed, with a detection time of only one minute. Additionally, the assay facilitated the simultaneous catalytic degradation of NOR via Fe-Cu NZs. The primary degradation mechanism of NOR was identified as the transformation of the quinolone ring and the cleavage of the C9 = C10 double bond, which was substantiated by high-performance liquid chromatography (HPLC).
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Affiliation(s)
- Cong Cheng
- College of Science, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Min Han
- College of Science, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Gang Xiang
- College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
| | - Xiaoying Fu
- Sichuan Agricultural University Library, Chengdu 611130, Sichuan, China
| | - Xianxing Wang
- College of Science, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Changfang Lu
- College of Science, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
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3
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Fu Y, Xie Y, Shi H, Zhang G, Zhang H, Feng S. Molecularly imprinted electrochemical sensor based on metal-covalent organic framework for specifically recognizing norfloxacin from unpretreated milk. Food Chem 2023; 429:136921. [PMID: 37490821 DOI: 10.1016/j.foodchem.2023.136921] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 07/10/2023] [Accepted: 07/16/2023] [Indexed: 07/27/2023]
Abstract
Here, a molecularly imprinted electrochemical sensor (MIECS) was designed and fabricated for specifically monitoring norfloxacin (NFX), an entirely synthetic antibiotic. In which, Cu2+ dopped covalent organic framework (COF) was used to connect NFX imprinting layer and glassy carbon electrode through covalence. Under optimized conditions, the linear range is as wide as 5 orders of magnitude, and the detection limit is 5.94 × 10-3 μM (estimated based on S/N = 3). Average recoveries are among 92.4%-99.0% with relative standard deviations ≤ 4.05% (n = 3) in (spiked) whole, low-fat, and skimmed milk, validated by independent HPLC assays. The excellent performance can be ascribed to the significant recognition and enriching ability of the imprinting layer, improved conductivity of Cu2+ dopped covalent organic framework, and high stability of covalence between layers. We hope the work will act as a model of MIECSs for rapidly and selectively detecting trace drug residue in complex real samples.
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Affiliation(s)
- Yuchun Fu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Yang Xie
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Haizhu Shi
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Guowei Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Huaju Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Shun Feng
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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4
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Vu OT, Nguyen QH, Nguy Phan T, Luong TT, Eersels K, Wagner P, Truong LTN. Highly Sensitive Molecularly Imprinted Polymer-Based Electrochemical Sensors Enhanced by Gold Nanoparticles for Norfloxacin Detection in Aquaculture Water. ACS OMEGA 2023; 8:2887-2896. [PMID: 36713701 PMCID: PMC9878621 DOI: 10.1021/acsomega.2c04414] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 12/26/2022] [Indexed: 06/18/2023]
Abstract
The overuse of antibiotics in aquaculture and pharmaceuticals and their subsequent leaking into the environment have been demonstrated to be a potential route for creating antibiotic resistance in bacteria. In order to assess the impact of this problem and take regulatory measures, it is necessary to develop tools that allow for the detection of antibiotics in environmental samples in a routine, low-cost manner. In this study, we integrated gold nanoparticles (AuNPs) into a molecularly imprinted polymer (MIP) membrane to fabricate a new sensor for the detection of norfloxacin in pharmaceuticals and aquaculture samples. The receptor layers were characterized by scanning electron microscopy, electrochemical impedance spectroscopy, and Raman spectroscopy. The results of these studies demonstrate that the addition of AuNPs to the polymer network enhanced the sensor sensitivity by at least a factor of two. The MIP-AuNPs sensor has a low detection limit (0.15 ng/mL, S/N = 3) with a wide linear range and very high sensitivity. The selectivity of the fabricated sensor was measured in the sample containing other antibiotics (like chloramphenicol, ciprofloxacin, and levofloxacin). Rapid and precise norfloxacin detection in pharmaceutical compounds and fishpond water samples indicates that the fabricated sensor has the potential to be used for routine screening of aquacultures and pharmaceutical processes.
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Affiliation(s)
- Oanh Thi Vu
- Vietnam-Korea
Institute of Science and Technology, Hoa Lac Hi-Tech Park, Research and Development Zone, Hanoi100000, Vietnam
| | - Quoc Hao Nguyen
- Department
of Chemical Engineering (Integrated Engineering), Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do17104, Republic of Korea
| | - Tin Nguy Phan
- Vietnam-Korea
Institute of Science and Technology, Hoa Lac Hi-Tech Park, Research and Development Zone, Hanoi100000, Vietnam
| | - Thanh ThuyThi Luong
- National
Institute of Occupational and Environmental Health, 57 Le Quy Don,
Hai Ba Trung District, Hanoi3800 016, Vietnam
| | - Kasper Eersels
- Sensor
Engineering Department, Faculty of Science and Engineering, Maastricht University, Maastricht6200 MD, The Netherlands
| | - Patrick Wagner
- Department
of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200 D, LeuvenB-3001, Belgium
| | - Lien Thi Ngoc Truong
- Vietnam-Korea
Institute of Science and Technology, Hoa Lac Hi-Tech Park, Research and Development Zone, Hanoi100000, Vietnam
- School of
Engineering Physics, Hanoi University of
Science and Technology, No. 1 Dai Co Viet Road, Hai Ba Trung District, Hanoi100000, Vietnam
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5
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Li G, Qi X, Wu J, Xu L, Wan X, Liu Y, Chen Y, Li Q. Ultrasensitive, label-free voltammetric determination of norfloxacin based on molecularly imprinted polymers and Au nanoparticle-functionalized black phosphorus nanosheet nanocomposite. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129107. [PMID: 35569369 DOI: 10.1016/j.jhazmat.2022.129107] [Citation(s) in RCA: 85] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 04/23/2022] [Accepted: 05/05/2022] [Indexed: 05/05/2023]
Abstract
Norfloxacin (NOR) is an antibiotic commonly used to treat humans and food-producing animals. Owing to NOR abuse, its residues are frequently found in animal-derived food products and the surrounding environment. Therefore, development of an efficient analytical technique for the selective determination of trace NOR is greatly significant for food safety and environmental protection. Here, we fabricated an ultrasensitive, label-free molecularly imprinted polymer (MIP) voltammetric sensor for the selective determination of NOR, based on an Au nanoparticle-functionalized black phosphorus nanosheet nanocomposite (BPNS-AuNP) covered by a polypyrrole-imprinted film. BPNS-AuNP nanocomposites were prepared via an in-situ one-step method without the use of reducing agents. The imprinted polypyrrole film was formed on the surface of the BPNS-AuNPs in the presence of NOR. The physical properties and electrochemical behavior of the MIP/BPNS-AuNPs were investigated using various characterization techniques, and the analytical parameters were optimized. We found that BPNS-AuNPs improve the ambient stability and electrocatalytic activity, providing a large surface area for locating a higher number of specific recognition sites. Consequently, the MIP/BPNS-AuNP/GCE showed excellent sensing performance toward NOR, with a wide linear response range (0.1 nM - 10 μM), an extremely low limit of detection (0.012 nM), and extraordinary selectivity. Moreover, the MIP/BPNS-AuNP/GCE was used to determine NOR in various experimental samples with satisfactory results.
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Affiliation(s)
- Guangli Li
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
| | - Xiaoman Qi
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China
| | - Jingtao Wu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China
| | - Lijian Xu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China
| | - Xuan Wan
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China
| | - Ying Liu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China
| | - Yuwei Chen
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China
| | - Qing Li
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, China; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
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Qiu X, Gu J, Yang T, Ma C, Li L, Wu Y, Zhu C, Gao H, Yang Z, Wang Z, Li X, Hu A, Xu J, Zhong L, Shen J, Huang A, Chen G. Sensitive determination of Norfloxacin in milk based on β-cyclodextrin functionalized silver nanoparticles SERS substrate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 276:121212. [PMID: 35413530 DOI: 10.1016/j.saa.2022.121212] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/21/2022] [Accepted: 03/26/2022] [Indexed: 06/14/2023]
Abstract
The norfloxacin (NFX) residue in milk will increase human resistance to drugs and pose a threat to public health. In this work, a highly sensitive method for detection of NFX was developed based on surface enhanced Raman spectroscopy (SERS) using β-cyclodextrin functionalized silver nanoparticles (β-CD-AgNPs) as substrate. The unique spatial size and hydrophilicity of β-CD on the surface of AgNPs could selectively capture the target molecule (NFX) through some weak interactions, including hydrogen-bond interaction, electrostatic interaction, etc. The interactions were characterized by the UV-Vis absorption spectroscopy, fluorescence spectroscopy, Zeta potential and DLS. The Raman signal of NFX is largely enhanced when anchored by β-CD on the surface of AgNPs due to SERS effect. Through a series of experiments and analysis, the limit of detection (LOD) in standard solution and spiked milk were calculated to be 3.214 pmol/L and 5.327 nmol/L. The correlation coefficients (R2) were 0.986 and 0.984, respectively. For milk sample determination of NFX, the recovery was 101.29% to 104.00% with the relative standard deviation (RSD) from 2.986% to 9.136%. To sum up, this developed SERS strategy is sensitive and specific to detect NFX in milk, it has practical application value and prospects.
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Affiliation(s)
- Xiaoqian Qiu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Jiao Gu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Taiqun Yang
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Chaoqun Ma
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Lei Li
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Yamin Wu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Chun Zhu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Hui Gao
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Zichen Yang
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China; School of Internet of Things Engineering, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China
| | - Zirui Wang
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Xiaolin Li
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Anqi Hu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Jinzeng Xu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Lvyuan Zhong
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Jialu Shen
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Anlan Huang
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Guoqing Chen
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China.
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共价有机框架分子印迹聚合物复合材料的制备及其用于牛奶中痕量诺氟沙星的选择性富集. Se Pu 2022; 40:1-9. [PMID: 34985210 PMCID: PMC9404097 DOI: 10.3724/sp.j.1123.2021.03013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
诺氟沙星(NFX)作为一种常见的喹诺酮类兽药,被广泛应用于畜牧业中,但其会残留在动物体内,进而对人体健康造成危害,为此有许多国家和组织均对NFX残留量进行了严格限制。为实现对复杂体系中痕量NFX残留的准确与可靠分析,该文制备了一种以共价有机框架(COFs)为载体的分子印迹聚合物(MIPs)。首先,在室温条件下,以金属三氟酸盐为催化剂,对苯二甲醛和3,3'-二氨基联苯为原料快速合成了“席夫碱”型共价有机框架(DP-COF)。然后将NFX、甲基丙烯酸、乙二醇二甲基丙烯酸酯与DP-COF混合,利用偶氮二异丁腈引发聚合反应,即可得到DP-COF@MIPs。整个制备过程条件温和,耗时仅5 h。采用场发射扫描电镜、傅里叶红外光谱、X射线衍射仪、BET比表面积测试仪等对其进行了表征。结果证实成功制备出了DP-COF@MIPs,该材料表面粗糙,拥有介孔范围的孔径(17.79 nm)。通过吸附实验、重复使用性实验对材料性能进行评估,结果表明该材料表观吸附容量高达41.57 mg/g,对NFX具有良好的特异性和选择性识别能力,且重复使用率令人满意。结合HPLC-UV-Vis,实现对牛奶样品中痕量NFX的检测。在3个加标水平下(0.03、0.1、0.3 mg/L),平均回收率为88.8%~92.9%,相对标准偏差小于1.7%。结果表明,该方法可以实现在复杂基质中对兽药残留高选择性、高灵敏度及准确性的检测。
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Zhang Z, Wu T, Zhou H, Jiang C, Wang Y. 3D flower-shaped BiOI encapsulated in molecularly imprinted polymer for hypersensitivity to norfloxacin. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Study on the properties and reaction mechanism of polypyrrole@norfloxacin molecularly imprinted electrochemical sensor based on three-dimensional CoFe-MOFs/AuNPs. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138174] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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A nanocomposite optosensor of hydroxyapatite and graphene quantum dots embedded within highly specific polymer for norfloxacin detection. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105127] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Nevídalová H, Michalcová L, Glatz Z. Capillary electrophoresis-based immunoassay and aptamer assay: A review. Electrophoresis 2020; 41:414-433. [PMID: 31975407 DOI: 10.1002/elps.201900426] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 12/31/2022]
Abstract
Over the last two decades, the group of techniques called affinity probe CE has been widely used for the detection and the determination of several types of biomolecules with high sensitivity. These techniques combine the low sample consumption and high separation power of CE with the selectivity of the probe to the target molecule. The assays can be defined according to the type of probe used: CE immunoassays, with an antibody as the probe, or aptamer-based CE, with an aptamer as the probe. Immunoassays are generally divided into homogeneous and heterogeneous groups, and homogeneous variant can be further performed in competitive or noncompetitive formats. Interacting partners are free in solution at homogeneous assay, as opposed to heterogeneous analyses, where one of them is immobilized onto a solid support. Highly sensitive fluorescence, chemiluminescence or electrochemical detections were typically used in this type of study. The use of the aptamers as probes has several advantages over antibodies such as shorter generation time, higher thermal stability, lower price, and lower variability. The aptamer-based CE technique was in practice utilized for the determination of proteins in biological fluids and environmentally or clinically important small molecules. Both techniques were also transferred to microchip. This review is focused on theoretical principles of these techniques and a summary of their applications in research.
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Affiliation(s)
- Hana Nevídalová
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Lenka Michalcová
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
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12
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Qin D, Zhao M, Wang J, Lian Z. Selective extraction and detection of norfloxacin from marine sediment and seawater samples using molecularly imprinted silica sorbents coupled with HPLC. MARINE POLLUTION BULLETIN 2020; 150:110677. [PMID: 31669981 DOI: 10.1016/j.marpolbul.2019.110677] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/17/2019] [Accepted: 10/17/2019] [Indexed: 06/10/2023]
Abstract
A simple, sensitive and effective method was developed and validated for selective adsorption and quantitation of norfloxacin (NFX) from marine sediments and seawater samples using the novel molecularly imprinted silica polymers as sorbents followed by high-performance liquid chromatographic analysis with diode array detection (HPLC-DAD). The imprinted particles were characterized by different techniques and the molecular recognition for NFX was also investigated. Several parameters affecting the extraction efficiency of molecularly imprinted solid-phase extraction (MISPE) process were optimized. Three sediment and seawater samples from Weihai bay in China were analyzed and the results show that satisfactory recoveries (77.2-98.7%) were achieved in seawater samples with low relative standard deviation (RSD) values less than 6.89% (n = 3), and the recoveries in sediments were in the range of 75.5-91.7%. The limits of detection are respectivley 2 μg L-1 in seawater samples and 5 μg kg-1 in sediments.
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Affiliation(s)
- Dan Qin
- Marine College, Shandong University, Weihai, 264209, China
| | - Min Zhao
- Marine College, Shandong University, Weihai, 264209, China
| | - Jiangtao Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Ziru Lian
- Marine College, Shandong University, Weihai, 264209, China.
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13
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Development of a Generic Enzyme-Immunoassay for the Detection of Fluoro(quinolone)-Residues in Foodstuffs Based on a Highly Sensitive Monoclonal Antibody. FOOD ANAL METHOD 2019. [DOI: 10.1007/s12161-019-01695-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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DANG J, CUI H, LI X, ZHANG J. Determination of Norfloxacin Using a Tetraoxocalix[2]arene[2]triazine Covalently Functionalized Multi-walled Carbon Nanotubes Modified Electrode. ANAL SCI 2019; 35:979-985. [DOI: 10.2116/analsci.19p127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Jinjin DANG
- School of Public Health, Shanxi Medical University
| | - Hong CUI
- School of Public Health, Shanxi Medical University
| | - Xiangjun LI
- School of Chemical Sciences, University of Chinese Academy of Sciences
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15
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Nguyen BT, Kang MJ. Application of Capillary Electrophoresis with Laser-Induced Fluorescence to Immunoassays and Enzyme Assays. Molecules 2019; 24:E1977. [PMID: 31121978 PMCID: PMC6571882 DOI: 10.3390/molecules24101977] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/20/2019] [Accepted: 05/21/2019] [Indexed: 02/07/2023] Open
Abstract
Capillary electrophoresis using laser-induced fluorescence detection (CE-LIF) is one of the most sensitive separation tools among electrical separation methods. The use of CE-LIF in immunoassays and enzyme assays has gained a reputation in recent years for its high detection sensitivity, short analysis time, and accurate quantification. Immunoassays are bioassay platforms that rely on binding reactions between an antigen (analyte) and a specific antibody. Enzyme assays measure enzymatic activity through quantitative analysis of substrates and products by the reaction of enzymes in purified enzyme or cell systems. These two category analyses play an important role in the context of biopharmaceutical analysis, clinical therapy, drug discovery, and diagnosis analysis. This review discusses the expanding portfolio of immune and enzyme assays using CE-LIF and focuses on the advantages and disadvantages of these methods over the ten years of existing technology since 2008.
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Affiliation(s)
- Binh Thanh Nguyen
- Molecular Recognition Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.
- Division of Bio-Medical Science and Technology (Biological Chemistry), Korea University of Science and Technology (UST), Daejeon 34113, Korea.
| | - Min-Jung Kang
- Molecular Recognition Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.
- Division of Bio-Medical Science and Technology (Biological Chemistry), Korea University of Science and Technology (UST), Daejeon 34113, Korea.
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16
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Scala-Benuzzi ML, Takara EA, Alderete M, Soler-Illia GJ, Schneider RJ, Raba J, Messina GA. Ethinylestradiol quantification in drinking water sources using a fluorescent paper based immunosensor. Microchem J 2018. [DOI: 10.1016/j.microc.2018.05.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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17
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18
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Insights into high-efficiency molecularly imprinted nanocomposite membranes by channel modification for selective enrichment and separation of norfloxacin. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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19
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Wang Q, Zhao R, Cui Y, Liu C, Liang L, Yan S. Rapid and Simple Determination of Sarafloxacin and Difloxacin in Beef by Capillary Electrophoresis Coupled with Solid-Phase Extraction. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:1981436. [PMID: 29675283 PMCID: PMC5838437 DOI: 10.1155/2018/1981436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 02/20/2017] [Accepted: 03/07/2017] [Indexed: 06/08/2023]
Abstract
A simple and rapid capillary electrophoresis method with diode array detector was developed for determination of sarafloxacin and difloxacin in beef. In this study, the experimental parameters affecting the determination were systematically optimized, including wavelength, buffer system, pH and concentration, and separation temperature and voltage. Under the optimal conditions, sarafloxacin and difloxacin could be quantified within 4 min using H3BO3/Na2B4O7 buffer (35 mmol/L, pH 8.8) as background electrolyte, 25 kV as separation voltage, and 22°C as the column temperature. The linear range of the method was 1-20 μg/mL with LOD 0.8 μg/mL for sarafloxacin and 0.5-20 μg/mL with LOD 0.3 μg/mL for difloxacin. The RSDs for the peak area of 8 μg/mL sarafloxacin were 4.8% (intraday) and 7.8% (interday), respectively. The proposed method has been applied to determine the residue of sarafloxacin and difloxacin in beef samples with the satisfactory recovery.
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Affiliation(s)
- Qian Wang
- Department of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Rui Zhao
- Department of Food Science and Biological Engineering, Tianjin Agricultural University, Tianjin 300384, China
| | - Yan Cui
- Department of Food Science and Biological Engineering, Tianjin Agricultural University, Tianjin 300384, China
- Tianjin Engineering and Technology Research Center of Agricultural Products Processing, Tianjin 300384, China
| | - Cuicui Liu
- Department of Food Science and Biological Engineering, Tianjin Agricultural University, Tianjin 300384, China
- Tianjin Engineering and Technology Research Center of Agricultural Products Processing, Tianjin 300384, China
| | - Liya Liang
- Department of Food Science and Biological Engineering, Tianjin Agricultural University, Tianjin 300384, China
- Tianjin Engineering and Technology Research Center of Agricultural Products Processing, Tianjin 300384, China
| | - Shijie Yan
- Department of Food Science and Biological Engineering, Tianjin Agricultural University, Tianjin 300384, China
- Tianjin Engineering and Technology Research Center of Agricultural Products Processing, Tianjin 300384, China
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20
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Álvarez G, Montero L, Llorens L, Castro-Puyana M, Cifuentes A. Recent advances in the application of capillary electromigration methods for food analysis and Foodomics. Electrophoresis 2017; 39:136-159. [PMID: 28975648 DOI: 10.1002/elps.201700321] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/25/2017] [Accepted: 09/25/2017] [Indexed: 12/21/2022]
Abstract
This review work presents and discusses the main applications of capillary electromigration methods in food analysis and Foodomics. Papers that were published during the period February 2015-February 2017 are included following the previous review by Acunha et al. (Electrophoresis 2016, 37, 111-141). The paper shows the large variety of food related molecules that have been analyzed by CE including amino acids, biogenic amines, carbohydrates, chiral compounds, contaminants, DNAs, food additives, heterocyclic amines, lipids, peptides, pesticides, phenols, pigments, polyphenols, proteins, residues, toxins, vitamins, small organic and inorganic compounds, as well as other minor compounds. This work describes the last results on food quality and safety, nutritional value, storage, bioactivity, as well as uses of CE for monitoring food interactions and food processing including recent microchips developments and new applications of CE in Foodomics.
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Affiliation(s)
| | | | | | - María Castro-Puyana
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Madrid, Spain
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21
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Ibrahim HK, Abdel-Moety MM, Abdel-Gawad SA, Al-Ghobashy MA, Kawy MA. Validated electrochemical and chromatographic quantifications of some antibiotic residues in pharmaceutical industrial waste water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:7023-7034. [PMID: 28092003 DOI: 10.1007/s11356-016-8340-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 12/25/2016] [Indexed: 06/06/2023]
Abstract
Realistic implementation of ion selective electrodes (ISEs) into environmental monitoring programs has always been a challenging task. This could be largely attributed to difficulties in validation of ISE assay results. In this study, the electrochemical response of amoxicillin trihydrate (AMX), ciprofloxacin hydrochloride (CPLX), trimethoprim (TMP), and norfloxacin (NFLX) was studied by the fabrication of sensitive membrane electrodes belonging to two types of ISEs, which are polyvinyl chloride (PVC) membrane electrodes and glassy carbon (GC) electrodes. Linear response for the membrane electrodes was in the concentration range of 10-5-10-2 mol/L. For the PVC membrane electrodes, Nernstian slopes of 55.1, 56.5, 56.5, and 54.0 mV/decade were achieved over a pH 4-8 for AMX, CPLX, and NFLX, respectively, and pH 3-6 for TMP. On the other hand, for GC electrodes, Nernstian slopes of 59.1, 58.2, 57.0, and 58.2 mV/decade were achieved over pH 4-8 for AMX, CPLX, and NFLX, respectively, and pH 3-6 for TMP. In addition to assay validation to international industry standards, the fabricated electrodes were also cross-validated relative to conventional separation techniques; high performance liquid chromatography (HPLC), and thin layer chromatography (TLC)-densitometry. The HPLC assay was applied in concentration range of 0.5-10.0 μg/mL, for all target analytes. The TLC-densitometry was adopted over a concentration range of 0.3-1.0 μg/band, for AMX, and 0.1-0.9 μg/band, for CPLX, NFLX, and TMP. The proposed techniques were successfully applied for quantification of the selected drugs either in pure form or waste water samples obtained from pharmaceutical plants. The actual waste water samples were subjected to solid phase extraction (SPE) for pretreatment prior to the application of chromatographic techniques (HPLC and TLC-densitometry). On the other hand, the fabricated electrodes were successfully applied for quantification of the antibiotic residues in actual waste water samples without any pretreatment. This finding assures the suitability of the fabricated ISEs for environmental analysis.
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Affiliation(s)
- Heba K Ibrahim
- National Organization for Drug Control and Research, Giza, Egypt
| | | | - Sherif A Abdel-Gawad
- Pharmaceutical Chemistry Department, College of Pharmacy, Prince Sattam Bin Abdul-Aziz University, Al Kharj, Kingdom of Saudi Arabia.
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Medhat A Al-Ghobashy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- Bioanalysis Research Group, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mohamed Abdel Kawy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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22
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Amelin VG, Lavrukhina OI. Food safety assurance using methods of chemical analysis. JOURNAL OF ANALYTICAL CHEMISTRY 2017. [DOI: 10.1134/s1061934817010038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Peng J, Liu L, Kuang H, Cui G, Xu C. Development of an icELISA and immunochromatographic strip for detection of norfloxacin and its analogs in milk. FOOD AGR IMMUNOL 2016. [DOI: 10.1080/09540105.2016.1263987] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Juan Peng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
| | - Liqiang Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
| | - Hua Kuang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
| | - Gang Cui
- School of Chemistry, Yancheng Teachers University, Yancheng, People's Republic of China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
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24
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Nanostructured platform integrated into a microfluidic immunosensor coupled to laser-induced fluorescence for the epithelial cancer biomarker determination. Microchem J 2016. [DOI: 10.1016/j.microc.2016.03.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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25
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Chang PL, Hsieh MM, Chiu TC. Recent Advances in the Determination of Pesticides in Environmental Samples by Capillary Electrophoresis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:409. [PMID: 27070634 PMCID: PMC4847071 DOI: 10.3390/ijerph13040409] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/31/2016] [Accepted: 03/31/2016] [Indexed: 01/10/2023]
Abstract
Nowadays, owing to the increasing population and the attempts to satisfy its needs, pesticides are widely applied to control the quantity and quality of agricultural products. However, the presence of pesticide residues and their metabolites in environmental samples is hazardous to the health of humans and all other living organisms. Thus, monitoring these compounds is extremely important to ensure that only permitted levels of pesticide are consumed. To this end, fast, reliable, and environmentally friendly methods that can accurately analyze dilute, complex samples containing both parent substances and their metabolites are required. Focusing primarily on research published since 2010, this review summarizes the use of various sample pretreatment techniques to extract pesticides from various matrices, combined with on-line preconcentration strategies for sensitivity improvement, and subsequent capillary electrophoresis analysis.
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Affiliation(s)
- Po-Ling Chang
- Department of Chemistry, Tunghai University, Taichung 40704, Taiwan.
| | - Ming-Mu Hsieh
- Department of Chemistry, National Kaohsiung Normal University, 62, Shenjhong Road, Yanchao District, Kaohsiung 82446, Taiwan.
| | - Tai-Chia Chiu
- Department of Applied Science, National Taitung University, 369, Section 2, University Road, Taitung 95092, Taiwan.
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26
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Affiliation(s)
- Rachel K Harstad
- University of Minnesota , Department of Chemistry, 207 Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Alexander C Johnson
- University of Minnesota , Department of Chemistry, 207 Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Megan M Weisenberger
- University of Minnesota , Department of Chemistry, 207 Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Michael T Bowser
- University of Minnesota , Department of Chemistry, 207 Pleasant Street South East, Minneapolis, Minnesota 55455, United States
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27
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Domínguez-Vega E, Montealegre C, Marina ML. Analysis of antibiotics by CE and their use as chiral selectors: An update. Electrophoresis 2015; 37:189-211. [PMID: 26471773 DOI: 10.1002/elps.201500359] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/28/2015] [Accepted: 09/28/2015] [Indexed: 12/22/2022]
Abstract
The widespread use of antibiotics in medicine and as growth-promoting agents has increased the demand for suitable analytical techniques for their analysis. Analytical methods based on CE or miniaturized CE systems have proved over the years their ability for the analysis of antibiotics. Since our last review (Electrophoresis 2014, 35, 28-49) several new CE methodologies have been reported for antibiotic analysis. This review presents an update of the literature published from June 2013 to June 2015 for the analysis of antibiotics by CE. UV continues being the most used detection system for antibiotics analysis by CE. Strategies to improve sensitivity as the use of sensitive detection systems and the application of preconcentration techniques appear to be the major developments. Furthermore, the use of portable and miniaturized devices for antibiotic analysis is presented in detail. Applications of the developed methodologies to the determination of residues of antibiotics in biological, food, and environmental samples are carefully described. Finally, new developments and applications of antibiotics as chiral selectors in CE are also included.
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Affiliation(s)
- Elena Domínguez-Vega
- Division of BioAnalytical Chemistry, VU University Amsterdam, Amsterdam, The Netherlands
| | | | - Maria Luisa Marina
- Department of Analytical Chemistry, Physical Chemistry, and Chemical Engineering, University of Alcalá, Alcalá de Henares, Madrid, Spain
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28
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Acunha T, Ibáñez C, García-Cañas V, Simó C, Cifuentes A. Recent advances in the application of capillary electromigration methods for food analysis and Foodomics. Electrophoresis 2015; 37:111-41. [DOI: 10.1002/elps.201500291] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/22/2015] [Accepted: 07/23/2015] [Indexed: 01/19/2023]
Affiliation(s)
- Tanize Acunha
- Laboratory of Foodomics; CIAL, CSIC; Madrid Spain
- CAPES Foundation; Ministry of Education of Brazil; Brasília DF Brazil
| | - Clara Ibáñez
- Laboratory of Foodomics; CIAL, CSIC; Madrid Spain
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