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Sorout M, Bhogal S. Current trends of functional monomers and cross linkers used to produce molecularly imprinted polymers for food analysis. Crit Rev Food Sci Nutr 2024:1-21. [PMID: 38907585 DOI: 10.1080/10408398.2024.2365337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2024]
Abstract
Molecularly imprinted polymers (MIPs) as artificial synthetic receptors are in high demand for food analysis due to their inherent molecular recognition abilities. It is common practice to employ functional monomers with basic or acidic groups that can interact with analyte molecules via hydrogen bonds, covalent bonds, and other interactions (π-π, dipole-ion, hydrophobic, and Van der Waals). Therefore, selecting the appropriate functional monomer and cross-linker is crucial for determining how precisely they interact with the template and developing the polymeric network's three-dimensional structure. This study summarizes the advancements made in MIP's functional monomers and cross-linkers for food analysis from 2018 to 2023. The subsequent computational design of MIP has been thoroughly explained. The discussion has concluded with a look at the difficulties and prospects for MIP in food analysis.
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Affiliation(s)
- Mohit Sorout
- Department of Chemistry, Chandigarh University, Mohali, India
| | - Shikha Bhogal
- Department of Chemistry, Chandigarh University, Mohali, India
- University Centre for Research and Development, Chandigarh University, Mohali, India
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2
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Li H, Yin Z, Zhang Y, Yang J, Ding Y, Wang S, Pan M. Computational simulation-assisted design and experimental verification of molecularly imprinted polymers for selective extraction of chlorogenic acid. J Chromatogr A 2024; 1714:464556. [PMID: 38056394 DOI: 10.1016/j.chroma.2023.464556] [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: 07/01/2023] [Revised: 11/28/2023] [Accepted: 12/01/2023] [Indexed: 12/08/2023]
Abstract
Chlorogenic acid (CGA) is an active ingredient in honeysuckle with a broad-spectrum of antibacterial activity, suppressing tumor growth and other pharmacological effects. However, it is susceptible to damage during traditional extraction and separation processes. Therefore, developing selective and efficient extraction methods of CGA is essential. Based on computational molecular simulations, a reliable and efficient molecularly imprinted polymers (MIPs) were successfully developed for selective extraction of CGA. MIPs and non-molecularly imprinted polymers (NIPs) were synthesized using a precipitation polymerization method, employing three different functional monomers: [methacrylic acid (MAA), 4-vinylpyridine (4-VP), and methyl methacrylate (MMA)], with CGA serving as the template molecule. To simulate the polymers and predict the optimal ratio between the template and functional monomer, the computational studies and adsorption performance experiments were carried out. The adsorption characteristics and thermal stability of polymers were evaluated by isothermal adsorption, adsorption kinetics, selective adsorption and thermogravimetric analysis, aiming to obtain the MIPs with specific recognition and selectivity for CGA. When the molar ratio of template CGA to functional monomer 4-VP was 1:8, the prepared MIPs was found to have the maximum adsorption capacity (14.85 mg g-1) and the highest imprinting factor (1.74) at the CGA concentration of 100 mg L-1. These results were consistent with those obtained by computational molecular simulation. This study not only provides good guidance for developing separation materials for extracting CGA from natural plants but also inspires the application of computer simulation and molecular docking techniques in the preparation of specific MIPs materials.
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Affiliation(s)
- Huilin Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Zongjia Yin
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Yihua Zhang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Jingying Yang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Yumei Ding
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China.
| | - Mingfei Pan
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China.
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Bhogal S, Grover A, Mohiuddin I. A Review of the Analysis of Phthalates by Gas Chromatography in Aqueous and Food Matrices. Crit Rev Anal Chem 2023:1-25. [PMID: 37647342 DOI: 10.1080/10408347.2023.2250876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
As a commonly well-known industrial chemical, phthalates are produced in high volumes to be used in various consumer products (e.g., plasticizers, medical devices, construction materials, and toys) to enhance softness, durability, transparency, and flexibility. Phthalates are generally not chemically bonded to the polymer chain of the plastic in which they are mixed. Thus, they may leach, migrate, or evaporate into indoor/outdoor air, and foodstuffs. In this review, a comprehensive overview of several sample preparation methods coupled with gas chromatography for the analysis of phthalates in various kinds of complex matrices, with a focus on the last 20 years' worth of papers. The review begins by highlighting the environmental significance of phthalate pollution along with the various routes to their exposure to general population. Then, the discussion is extended to cover the pretreatment and extraction techniques for phthalates for their quantitation based on gas chromatographic approach. Finally, the present and future challenges for the detection of phthalates in aqueous and food matrices are discussed.
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Affiliation(s)
- Shikha Bhogal
- University Centre for Research and Development, Chandigarh University, Mohali, India
- Department of Chemistry, Chandigarh University, Mohali, India
| | - Aman Grover
- Department of Chemistry, Punjabi University, Patiala, India
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Qi M, Li Y, Zhu Z, Du B, Chen D. Current Sample Preparation Methods and Determination Techniques for the Determination of Phthalic Acid Ester Plasticizers in Edible Oils. Molecules 2023; 28:5106. [PMID: 37446766 DOI: 10.3390/molecules28135106] [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: 04/30/2023] [Revised: 06/22/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
In the process of production, processing, transportation, and storage of edible oils, the oils inevitably come into contact with plastic products. As a result, plasticizers migrate into edible oils, are harmful to human health, and can exhibit reproductive toxicity. Therefore, the determination of plasticizers in edible oils is very important, and a series of sample preparation methods and determination techniques have been developed for the determination of plasticizers in edible oils. Phthalic acid ester (PAE) plasticizers are the most widely used among all plasticizers. This review aims to provide a comprehensive overview of the sample preparation methods and detection techniques reported for the determination of PAEs in edible oils since 2010, focusing on sample preparation methods of edible oils combined with various separation-based analytical techniques, such as gas chromatography (GC) and liquid chromatography (LC) with different detectors. Furthermore, the advantages, disadvantages, and limitations of these techniques as well as the prospective future developments are also discussed.
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Affiliation(s)
- Menghui Qi
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Yanyan Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Zheng Zhu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Bin Du
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, Zhengzhou 450001, China
| | - Di Chen
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, Zhengzhou 450001, China
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Zhang C, Zhou J, Ma T, Guo W, Wei D, Tan Y, Deng Y. Advances in application of sensors for determination of phthalate esters. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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He LQ, Wang ZM, Li YJ, Yang J, Liao LF, Xiao XL, Liu Y. A Novel Electrochemical Sensor Modified with a Computer-Simulative Magnetic Ion-Imprinted Membrane for Identification of Uranyl Ion. SENSORS 2022; 22:s22124410. [PMID: 35746190 PMCID: PMC9227270 DOI: 10.3390/s22124410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 02/05/2023]
Abstract
In this paper, a novel ion-imprinted electrochemical sensor modified with magnetic nanomaterial Fe3O4@SiO2 was established for the high sensitivity and selectivity determination of UO22+ in the environment. Density functional theory (DFT) was employed to investigate the interaction between templates and binding ligands to screen out suitable functional binding ligand for the reasonable design of the ion imprinted sensors. The MIIP/MCPE (magnetic ion imprinted membrane/magnetic carbon paste electrode) modified with Fe3O4@SiO2 exhibited a strong response current and high sensitivity toward uranyl ion comparison with the bare carbon paste electrodes. Meanwhile, the MCPE was fabricated simultaneously under the action of strong magnetic adsorption, and the ion imprinted membrane can be adsorbed stably on the electrode surface, handling the problem that the imprinted membrane was easy to fall off during the process of experimental determination and elution. Based on the uranyl ion imprinting network, differential pulse voltammetry (DPV) was adopted for the detection technology to realize the electrochemical reduction of uranyl ions, which improved the selectivity of the sensor. Thereafter, uranyl ions were detected in the linear concentration range of 1.0 × 10−9 mol L−1 to 2.0 × 10−7 mol L−1, with the detection and quantification limit of 1.08 × 10−9 and 3.23 × 10−10 mol L−1, respectively. In addition, the sensor was successfully demonstrated for the determination of uranyl ions in uranium tailings soil samples and water samples with a recovery of 95% to 104%.
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Affiliation(s)
- Li-Qiong He
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China;
| | - Zhi-Mei Wang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; (Z.-M.W.); (Y.-J.L.)
| | - Yu-Jie Li
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; (Z.-M.W.); (Y.-J.L.)
| | - Jing Yang
- Hengyang Market Supervision Inspection and Testing Center, Hengyang 421001, China;
| | - Li-Fu Liao
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;
| | - Xi-Lin Xiao
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China;
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; (Z.-M.W.); (Y.-J.L.)
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;
- State Key Laboratory of Chemo & Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Correspondence: (X.-L.X.); (Y.L.)
| | - Yong Liu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; (Z.-M.W.); (Y.-J.L.)
- Correspondence: (X.-L.X.); (Y.L.)
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Liu Y, Song W, Zhou D, Han F, Gong X, Pan P. A new core–shell magnetic mesoporous surface molecularly imprinted composite and its application as an MSPE sorbent for determination of phthalate esters. RSC Adv 2022; 12:7253-7261. [PMID: 35424702 PMCID: PMC8982323 DOI: 10.1039/d1ra09405j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 02/22/2022] [Indexed: 01/16/2023] Open
Abstract
In this study, a new core–shell magnetic mesoporous surface molecularly imprinted polymer (Fe3O4@SiO2@mSiO2-MIPs) which has specific adsorption and rapid adsorption rate for phthalate esters (PAEs) was prepared by a convenient method. Based on this composite as a magnetic solid phase extraction (MSPE) material, a rapid, efficient and sensitive matrix dispersion magnetic solid-phase extraction gas chromatography-mass spectrometry method (DMSPE-GC/MS) was developed for the determination of PAEs in multiple liquid samples. It is the first time that Fe3O4@SiO2@mSiO2-MIPs have been prepared by bonding amino groups on the surface of a double layer silicon substrate with diisononyl phthalate (DINP) as virtual template and 3-(2-aminoethyl)-aminopropyl trimethoxymethylsilane (TSD) as functional monomer. FT-IR, TEM, EDS, SEM, XRD, BET and VSM were used to characterize the composite. The adsorption isotherm and kinetics of Fe3O4@SiO2@mSiO2-MIPs showed that it possessed fast adsorption rates (approximately 5 min to reach equilibrium), high adsorption capacities (523.9 mg g−1) and good recognition of PAEs. The real samples were preconcentrated by Fe3O4@SiO2@mSiO2-MIPs, under the optimum DMSPE-GC/MS conditions. Validation experiments showed that the method presented good linearity (R2 > 0.9971), satisfactory precision (RSD < 5.7%) and high recovery (92.1–105.8%), and the limits of detection ranged from 1.17 ng L−1 to 3.03 ng L−1. The results indicated that the novel method had good sensitivity, high efficiency and wide sample application and was suitable for the determination of PAEs in liquid drink samples such as water, alcohol, beverages and so on. A new core–shell magnetic mesoporous surface molecularly imprinted polymer (Fe3O4@SiO2@mSiO2-MIPs) which has specific adsorption for phthalate esters was synthesized by a facile and convenient method.![]()
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Affiliation(s)
- Yuxin Liu
- Technology Center of Hefei Customs, Hefei 230022, P. R. China
| | - Wei Song
- Technology Center of Hefei Customs, Hefei 230022, P. R. China
| | - Dianbing Zhou
- Technology Center of Hefei Customs, Hefei 230022, P. R. China
| | - Fang Han
- Technology Center of Hefei Customs, Hefei 230022, P. R. China
| | - Xiaoming Gong
- Technology Center of Jinan Customs, Jinan 250000, P. R. China
| | - Pan Pan
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui, P. R. China
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9
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A novel enrichment and sensitive method for simultaneous determination of 15 phthalate esters in milk powder samples. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112426] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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10
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Xu ML, Gao Y, Wang X, Han XX, Zhao B. Comprehensive Strategy for Sample Preparation for the Analysis of Food Contaminants and Residues by GC-MS/MS: A Review of Recent Research Trends. Foods 2021; 10:2473. [PMID: 34681522 PMCID: PMC8535889 DOI: 10.3390/foods10102473] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 01/19/2023] Open
Abstract
Food safety and quality have been gaining increasing attention in recent years. Gas chromatography coupled to tandem mass spectrometry (GC-MS/MS), a highly sensitive technique, is gradually being preferred to GC-MS in food safety laboratories since it provides a greater degree of separation on contaminants. In the analysis of food contaminants, sample preparation steps are crucial. The extraction of multiple target analytes simultaneously has become a new trend. Thus, multi-residue analytical methods, such as QuEChERs and adsorption extraction, are fast, simple, cheap, effective, robust, and safe. The number of microorganic contaminants has been increasing worldwide in recent years and are considered contaminants of emerging concern. High separation in MS/MS might be, in certain cases, favored to sample preparation selectivity. The ideal sample extraction procedure and purification method should take into account the contaminants of interest. Moreover, these methods should cooperate with high-resolution MS, and other sensitive full scan MSs that can produce a more comprehensive detection of contaminants in foods. In this review, we discuss the most recent trends in preparation methods for highly effective detection and analysis of food contaminants, which can be considered tools in the control of food quality and safety.
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Affiliation(s)
- Meng-Lei Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China;
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Yu Gao
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China;
| | - Xiao Wang
- Jilin Institute for Food Control, Changchun 130103, China;
| | - Xiao Xia Han
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China;
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China;
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Nicholls IA, Golker K, Olsson GD, Suriyanarayanan S, Wiklander JG. The Use of Computational Methods for the Development of Molecularly Imprinted Polymers. Polymers (Basel) 2021; 13:2841. [PMID: 34502881 PMCID: PMC8434026 DOI: 10.3390/polym13172841] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/29/2022] Open
Abstract
Recent years have witnessed a dramatic increase in the use of theoretical and computational approaches in the study and development of molecular imprinting systems. These tools are being used to either improve understanding of the mechanisms underlying the function of molecular imprinting systems or for the design of new systems. Here, we present an overview of the literature describing the application of theoretical and computational techniques to the different stages of the molecular imprinting process (pre-polymerization mixture, polymerization process and ligand-molecularly imprinted polymer rebinding), along with an analysis of trends within and the current status of this aspect of the molecular imprinting field.
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Affiliation(s)
- Ian A. Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden; (K.G.); (G.D.O.); (S.S.); (J.G.W.)
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12
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Li L, Cui Y, Ren L, Li C, Liu Y, Jin Z. Magnetic dummy molecularly imprinted polymer nanoparticles as sorbent for dispersive solid-phase microextraction of phthalate monoesters in human urine samples. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106266] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Abstract
The review describes the development of batch solid phase extraction procedures based on dispersive (micro)solid phase extraction with molecularly imprinted polymers (MIPs) and magnetic MIPs (MMIPs). Advantages and disadvantages of the various MIPs for dispersive solid phase extraction and dispersive (micro)solid phase extraction are discussed. In addition, an effort has also been made to condense the information regarding MMIPs since there are a great variety of supports (magnetite and magnetite composites with carbon nanotubes, graphene oxide, or organic metal framework) and magnetite surface functionalization mechanisms for enhancing MIP synthesis, including reversible addition-fragmentation chain-transfer (RAFT) polymerization. Finally, drawbacks and future prospects for improving molecularly imprinted (micro)solid phase extraction (MIMSPE) are also appraised.
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Magnetic Solid-Phase Extraction Followed by HPLC–DAD for Highly Sensitive Determination of Phthalate Esters in Edible Vegetable Oils. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-021-02041-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Li ZY, Gu LL, Tong ZH, Du K, Shi JL, Kong GH. Computer simulation assisted preparation and application of myclobutanil imprinted nanoparticles. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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16
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Exploring the Use of Switchable Hydrophilicity Solvents as Extraction Phase for the Determination of Food-Packaging Contaminants in Coconut Water Samples by Gas Chromatography-Mass Spectrometry. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01876-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Selective recognition and enrichment of sterigmatocystin in wheat by thermo-responsive imprinted polymer based on magnetic halloysite nanotubes. J Chromatogr A 2020; 1619:460952. [PMID: 32057446 DOI: 10.1016/j.chroma.2020.460952] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 01/24/2020] [Accepted: 02/06/2020] [Indexed: 12/17/2022]
Abstract
Two thermo-responsive molecularly imprinted polymers (MHNTs@MIP and MCNTs@MIP) for the selective extraction of sterigmatocystin have been prepared on the surface of the magnetic halloysite nanotubes (MHNTs) and magnetic carbon nanotubes (MCNTs), respectively. 1, 8-dihydroxyanthraquinone, n-isopropyl acrylamide, methacrylic acid, ethylene dimethacrylate and dimethyl sulfoxide were used as the dummy template, thermo-sensitive functional monomer, co-monomer, cross-linker and porogen, respectively. The magnetic properties, adsorption properties as well as the temperature responsive behaviors of MHNTs@MIP and MCNTs@MIP were systematically studied and compared for the first time. Enough saturation magnetizations of MHNTs@MIP (9.42 emu/g) and MCNTs@MIP (10.54 emu/g) were obtained. MHNTs@MIP and MCNTs@MIP also showed controllable adsorption and release behaviors to sterigmatocystin in response to the temperature change (35 °C and 20 °C). Compared with MCNTs@MIP, MHNTs@MIP had higher adsorption affinity (KL = 0.120 L/mg), higher adsorption kinetic (K2 = 0.0100 g/(mg•min)) and higher imprinting factor (5.22) to sterigmatocystin. These results indicated that MHNTs@MIP was favorable adsorbent for the selective separation of sterigmatocystin. Furthermore, the elution conditions of MHNTs@MIP were optimized by response surface methodology. Under the optimal conditions, MHNTs@MIP coupled with high performance liquid chromatography were successfully applied to the selective recognition, purification, enrichment and detection of sterigmatocystin in wheat samples. The recoveries were calculated from 88.62% to 102.9% with RSDs less than 3.5 % and limit of detection of 1.1 μg/kg. This work provided a suitable carrier for the preparation of imprinted polymers and a practical approach for highly selective recognition and determination of analytes in real samples.
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Synthesis of dummy-template molecularly imprinted polymer adsorbents for solid phase extraction of aminoglycosides antibiotics from environmental water samples. Talanta 2020; 208:120385. [DOI: 10.1016/j.talanta.2019.120385] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 11/24/2022]
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Wu Y, Zhou Q, Yuan Y, Wang H, Tong Y, Zhan Y, Sheng X, Sun Y, Zhou X. Enrichment and sensitive determination of phthalate esters in environmental water samples: A novel approach of MSPE-HPLC based on PAMAM dendrimers-functionalized magnetic-nanoparticles. Talanta 2020; 206:120213. [DOI: 10.1016/j.talanta.2019.120213] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/21/2019] [Accepted: 07/31/2019] [Indexed: 12/21/2022]
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Affiliation(s)
- Valérie Pichon
- Laboratoire des Sciences Analytiques, Bioanalytiques et Miniaturisation-UMR Chimie Biologie Innovation 8231, ESPCI Paris, CNRS , PSL* Research University , 10 rue Vauquelin , 75005 Paris , France.,Sorbonne Université , 75005 Paris , France
| | - Nathalie Delaunay
- Laboratoire des Sciences Analytiques, Bioanalytiques et Miniaturisation-UMR Chimie Biologie Innovation 8231, ESPCI Paris, CNRS , PSL* Research University , 10 rue Vauquelin , 75005 Paris , France
| | - Audrey Combès
- Laboratoire des Sciences Analytiques, Bioanalytiques et Miniaturisation-UMR Chimie Biologie Innovation 8231, ESPCI Paris, CNRS , PSL* Research University , 10 rue Vauquelin , 75005 Paris , France
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Jiang HL, Li N, Cui L, Wang X, Zhao RS. Recent application of magnetic solid phase extraction for food safety analysis. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.115632] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Su C, Li Z, Zhang D, Wang Z, Zhou X, Liao L, Xiao X. A highly sensitive sensor based on a computer-designed magnetic molecularly imprinted membrane for the determination of acetaminophen. Biosens Bioelectron 2019; 148:111819. [PMID: 31678825 DOI: 10.1016/j.bios.2019.111819] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 10/15/2019] [Accepted: 10/23/2019] [Indexed: 12/11/2022]
Abstract
In this paper, a sensor based on a magnetic surface molecularly imprinted membrane (MMIP) was prepared for the highly sensitive and selective determination of acetaminophen (AP). Before the experiment, the appropriate functional monomers and solvents required for the polymer were screened, and the molecular electrostatic potentials (MEPs) were calculated by the DFT/B3LYP/6-31 + G method. MMIP with high recognition of AP was synthesized based on Fe3O4@SiO2nanoparticles (NPs) with excellent core-shell structure. Next, a carbon paste electrode (CPE) was filled with a piece of neodymium-iron-boron magnet to make magnetic electrode (MCPE), and MMIP/MCPE sensor was obtained by attaching a printed polymer to the surface of the electrode under the strong magnetic. Due to the stable molecular structure of the electrode surface, the sensor is highly effective and accurate for detection of AP using DPV. The DPV response of the sensor exhibited a linear dependence on the concentration of AP from 6 × 10-8 to 5 × 10-5 mol L-1 and 5 × 10-5 to 2 × 10-4 mol L-1, with a detection limit based on the lower linear range of 1.73 × 10-8 mol L-1(S/N = 3). When used for determination of AP in actual samples, the recovery of the sensor to the sample was 95.80-103.76%, and the RSD was 0.78%-3.05%.
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Affiliation(s)
- Changlin Su
- School of Chemistry and Chemical Engineering, Hunan Province Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang City, Hunan Province, 421001, PR China
| | - Zhiyang Li
- School of Chemistry and Chemical Engineering, Hunan Province Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang City, Hunan Province, 421001, PR China
| | - Di Zhang
- School of Chemistry and Chemical Engineering, Hunan Province Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang City, Hunan Province, 421001, PR China
| | - Zhimei Wang
- School of Chemistry and Chemical Engineering, Hunan Province Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang City, Hunan Province, 421001, PR China
| | - Xin Zhou
- School of Chemistry and Chemical Engineering, Hunan Province Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang City, Hunan Province, 421001, PR China
| | - Lifu Liao
- School of Chemistry and Chemical Engineering, Hunan Province Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang City, Hunan Province, 421001, PR China
| | - Xilin Xiao
- School of Chemistry and Chemical Engineering, Hunan Province Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang City, Hunan Province, 421001, PR China; School of Resource & Environment and Safety Engineering, University of South China, Hengyang City, Hunan Province, 421001, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, PR China.
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Yu M, Wang L, Hu L, Li Y, Luo D, Mei S. Recent applications of magnetic composites as extraction adsorbents for determination of environmental pollutants. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.07.022] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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25
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Improved chiral electrochemical recognition of tryptophan enantiomers based on three‐dimensional molecularly imprinted overoxidized polypyrrole/MnO
2
/carbon felt composites. Chirality 2019; 31:917-922. [DOI: 10.1002/chir.23126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/25/2019] [Accepted: 08/04/2019] [Indexed: 12/25/2022]
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Electrochemical Sensing of α-Fetoprotein Based on Molecularly Imprinted Polymerized Ionic Liquid Film on a Gold Nanoparticle Modified Electrode Surface. SENSORS 2019; 19:s19143218. [PMID: 31336606 PMCID: PMC6679504 DOI: 10.3390/s19143218] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/24/2019] [Accepted: 07/16/2019] [Indexed: 01/29/2023]
Abstract
A molecularly imprinted sensor was fabricated for alpha-fetoprotein (AFP) using an ionic liquid as a functional monomer. Ionic liquid possesses many excellent characteristics which can improve the sensing performances of the imprinted electrochemical sensor. To demonstrate this purpose, 1-[3-(N-cystamine)propyl]-3-vinylimidazolium tetrafluoroborate ionic liquid [(Cys)VIMBF4] was synthesized and used as a functional monomer to fabricate an AFP imprinted polymerized ionic liquid film on a gold nanoparticle modified glassy carbon electrode (GCE) surface at room temperature. After removing the AFP template, a molecularly imprinted electrochemical sensor was successfully prepared. The molecularly imprinted sensor exhibits excellent selectivity towards AFP, and can be used for sensitive determination of AFP. Under the optimized conditions, the imprinted sensor shows a good linear response to AFP in the concentration range of 0.03 ng mL−1~5 ng mL−1. The detection limit is estimated to be 2 pg mL−1.
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HS-β-cyclodextrin-functionalized Ag@Fe3O4@Ag nanoparticles as a surface-enhanced Raman spectroscopy substrate for the sensitive detection of butyl benzyl phthalate. Anal Bioanal Chem 2019; 411:5691-5701. [DOI: 10.1007/s00216-019-01947-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 05/20/2019] [Accepted: 05/27/2019] [Indexed: 11/25/2022]
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