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Farooq S, Xu L, Ullah S, Qin C, Ping J, Ying Y. Synthesis of green magnetic molecularly imprinted polymers for selective extraction of rifaximin in milk samples. Food Chem 2024; 460:140557. [PMID: 39047491 DOI: 10.1016/j.foodchem.2024.140557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 07/04/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024]
Abstract
In this study, a new analytical method was developed using magnetic molecularly imprinted polymers (MMIPs) by employing eco-friendly supramolecular ternary deep eutectic solvents to synthesize these MMIPs for selective extraction of rifaximin. The characterization analysis and adsorption affinity investigation were conducted. The results showed fast adsorption (15 min) with high adsorption capacity (43.20 mg g-1) and selectivity for rifaximin. Various extraction parameters were optimized, achieving recoveries ranging from 86.67% to 99.47% in spiked milk samples using high-performance liquid chromatography (HPLC). The detection and quantification limits were 0.01 mg L-1 and 0.03 mg L-1, respectively. The method exhibited low RSDs (<4.70%) and excellent selectivity, with MMIPs reusable up to seven times with only a 10% performance loss. This study proposes a convenient and reliable method for trace-level rifaximin extraction from milk using eco-friendly MMIPs.
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Affiliation(s)
- Saqib Farooq
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| | - Lizhou Xu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| | - Safat Ullah
- School of Medicine, Keele University, Staffordshire, ST5 5BG, UK
| | - Chunlian Qin
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| | - Jianfeng Ping
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| | - Yibin Ying
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China.
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Zamruddin NM, Herman H, Asman S, Hasanah AN. Synthesis and characterization of magnetic molecularly imprinted polymers for the rapid and selective determination of clofazimine in blood plasma samples. Heliyon 2024; 10:e33396. [PMID: 39040332 PMCID: PMC11260949 DOI: 10.1016/j.heliyon.2024.e33396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 06/19/2024] [Accepted: 06/20/2024] [Indexed: 07/24/2024] Open
Abstract
Clofazimine (CLF) is a riminophenazine derivative and a new therapeutic option with high efficacy for patients with rifampicin-resistant tuberculosis (TB). The blood levels of CLF are low and suboptimal, so therapeutic drug monitoring is required. Prior to this study, there were no molecular imprinting-based solid phase extraction (SPE) sorbents that could be used to determine the blood CLF levels. Hence, we prepared a magnetic molecularly imprinted polymer (MMIPs) to capture CLF. We employed computational selection of a functional monomer and crosslinker and confirmed these selections based on the association constant (K a) and a Job plot. We synthesised MMIPs with two surface modifiers and characterized the polymers. Our computational analysis based on the bond energy revealed that methyl methacrylate (MMA) was the most suitable functional monomer at a CLF-to-MMA molar ratio of 1:4. Based on the bond energy, the most suitable crosslinker was trimethylolpropane trimethacrylate (TRIM) at a CLF-to-TRIM molar ratio of 1:1. We determined the K a of MMA and TRIM in different solvents. Isopropanol produced the highest K a. The Job plot showed that a template-to-MMA-to-TRIM molar ratio of 1:4:20 was optimal to synthesize imprinted polymer in isopropanol. We prepared MMIPs using two different modifiers, namely aminopropyltrimethoxysilane (APTES) and oleic acid (OA), using the ratio determined from the Job plot. Physical characteristic tests carried out using FT-IR, SEM-EDS, PSA, BET and VSM, showed that the synthesis was success with a spherical and uniform agglomeration of particles, also a flat surface with many holes with a particle size of MMIP-APTES and MMIP-OA respectively 0.14 μm and 0.28 μm, showed a surface area for MMIP-APTES is 2874.51 m2/g and MMIP-OA 2913.07 m2/g, exhibiting superparamagnetic properties with a saturation magnetization value of MMIP-APTES 21.1 emu/g-1 and MMIP-OA 49.9 emu/g-1. Adsorption capacity result showed that MMIP-OA fits well with the Langmuir model, while MMIP-APTES fits better with the Freundlich. Application of MMIP-SPE (Magnetic Molecular Imprinted Polymer-Solid Phase Extraction) APTES resulted 92.3 ± 6.1 % and MMIP-SPE-OA 51.5 ± 8.1 % for recovering CLF in blood. The result of selectivity test also showed that MMIP-SPE-APTES is better than MMIP-SPE-OA and selectively recover CLF from human blood plasma existed together with other TB-Drugs. The study result shows that MMIPs with APTES modification can be used for CLF determination in human blood plasma.
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Affiliation(s)
- Nur Masyithah Zamruddin
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung Sumedang KM 21, Sumedang, 45363, Indonesia
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mulawarman University Gunung Kelua, 75119 Indonesia
| | - Herman Herman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mulawarman University Gunung Kelua, 75119 Indonesia
| | - Saliza Asman
- Department of Physics and Chemistry, Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, UTHM Pagoh Campus, Pagoh Higher Education Hub, KM 1, Jalan Panchor, 84600, Muar, Johor, Malaysia
| | - Aliya Nur Hasanah
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung Sumedang KM 21, Sumedang, 45363, Indonesia
- Drug Development Study Center, Faculty of Pharmacy, Padjadjaran University, Jl. Raya Bandung Sumedang KM 21, Sumedang, 45363, Indonesia
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Zhang H, Pan Q, Cai W, Shi X, Yang DP, Lin H, Qiu E. C-doped ZnO nanocomposites molecularly imprinted photoelectrochemical sensor for ultrasensitive and selective detection of oxytetracycline in milk. Food Chem 2023; 426:136535. [PMID: 37331139 DOI: 10.1016/j.foodchem.2023.136535] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/20/2023]
Abstract
Antibiotic monitoring remains vital to ensure human health and safety in the environment and foods. As the most popular detection method, photoelectrochemical (PEC) sensor can achieve rapid and accurate detection of antibiotics with the advantages of high sensitivity, easy-to-preparation process, as well as high selectivity. Herein, an extremely-efficient visible-light responsible ZnO/C nanocomposite was prepared and combined with acetylene black (as an enhanced conductive matrix), and the electron migration efficiency was greatly accelerated. Meanwhile, a molecularly imprinted polymer obtained by electrical agglomeration was conjugated as a specific recognizing site for target. Furthermore, the as-prepared rMIP-PEC sensor showed a low detection limit (8.75 pmol L-1, S/N = 3) in a wide linear detection range of 0.01-1000 nmol L-1 for oxytetracycline (OTC), with excellent selectivity and long-term stability. Our work shed light on applying C-doped ZnO semiconductor and molecularly imprinted polymer as photoelectric active sensing materials for rapid and accurate analysis of antibiotics in foods and environment.
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Affiliation(s)
- Huafang Zhang
- Key Laboratory of Chemical Materials and Green Nanotechnology, College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, Fujian 362000, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Qinghong Pan
- Key Laboratory of Chemical Materials and Green Nanotechnology, College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, Fujian 362000, China
| | - Wanying Cai
- The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Xiaowei Shi
- The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Da-Peng Yang
- Key Laboratory of Chemical Materials and Green Nanotechnology, College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, Fujian 362000, China; School of Rehabilitation Science and Engineering, University of Health and Rehabilitation Sciences, Qingdao, Shandong 266024, China.
| | - Hetong Lin
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Enhui Qiu
- The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, China.
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Ma X, Wang Y, Wang W, Heinlein J, Pfefferle LD, Tian X. Strategic preparation of porous magnetic molecularly imprinted polymers via a simple and green method for high-performance adsorption and removal of meropenem. Talanta 2023; 258:124419. [PMID: 36893497 DOI: 10.1016/j.talanta.2023.124419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 03/01/2023] [Accepted: 03/04/2023] [Indexed: 03/08/2023]
Abstract
In this study, a facile method has been developed to synthesize a novel type of porous magnetic molecularly imprinted polymers (Fe3O4-MER-MMIPs) for the selective adsorption and removal of meropenem. The Fe3O4-MER-MMIPs, with abundant functional groups and sufficient magnetism for easy separation, are prepared in aqueous solutions. The porous carriers reduce the overall mass of the MMIPs, greatly improving their adsorption capacity per unit mass and optimizing the overall value of the adsorbents. The green preparation conditions, adsorption performance, and physical and chemical properties of Fe3O4-MER-MMIPs have been carefully studied. The developed submicron materials exhibit a homogeneous morphology, satisfactory superparamagnetism (60 emu g-1), large adsorption capacity (11.49 mg g-1), quick adsorption kinetics (40 min), and good practical implementation in human serum and environmental water. Finally, the protocol developed in this work delivers a green and feasible method for synthesizing highly efficient adsorbents for the specific adsorption and removal of other antibiotics as well.
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Affiliation(s)
- Xuan Ma
- The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi, 710021, China
| | - Yue Wang
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
| | - Wenting Wang
- Jiangsu Simcere Pharmaceutical Co., Ltd., Nanjing, Jiangsu, 210023, China
| | - Jake Heinlein
- Department of Chemical & Environmental Engineering, Yale University, New Haven, CT, 06520-8286, United States
| | - Lisa D Pfefferle
- Department of Chemical & Environmental Engineering, Yale University, New Haven, CT, 06520-8286, United States
| | - Xuemeng Tian
- School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
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Nanicuacua DM, Gorla FA, de Almeida Silva M, Segatelli MG, Tarley CRT. Synthesis of a novel bifunctional hybrid molecularly imprinted poly(methacrylic acid-phenyltrimetoxysilane) for highly effective adsorption of diuron from aqueous medium. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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Zhang C, Li S, Wu J, Ping T, Ma L, Wang K, Lian K. Developing a hydroxyl-functionalized magnetic porous organic polymer combined with HPLC-MS/MS for determining 31 amide herbicides in fruit wine. Food Chem 2022; 403:134442. [DOI: 10.1016/j.foodchem.2022.134442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 09/19/2022] [Accepted: 09/26/2022] [Indexed: 10/14/2022]
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Factors Affecting the Analytical Performance of Magnetic Molecularly Imprinted Polymers. Polymers (Basel) 2022; 14:polym14153008. [PMID: 35893970 PMCID: PMC9329897 DOI: 10.3390/polym14153008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/16/2022] [Accepted: 07/19/2022] [Indexed: 12/07/2022] Open
Abstract
During the last few years, separation techniques using molecular imprinting polymers (MIPs) have been developed, making certain improvements using magnetic properties. Compared to MIP, Magnetic molecularly imprinted polymers (MMIPs) have high selectivity in sample pre-treatment and allow for fast and easy isolation of the target analyte. Its magnetic properties and good extraction performance depend on the MMIP synthesis step, which consists of 4 steps, namely magnetite manufacture, magnetic coating using modified components, polymerization and template desorption. This review discusses the factors that will affect the performance of MMIP as a selective sorbent at each stage. MMIP, using Fe3O4 as a magnetite core, showed strong superparamagnetism; it was prepared using the co-precipitation method using FeCl3·6H2O and FeCl2·H2O to obtain high magnetic properties, using NH4OH solution added for higher crystallinity. In magnetite synthesis, the use of a higher temperature and reaction time will result in a larger nanoparticle size and high magnetization saturation, while a higher pH value will result in a smaller particle size. In the modification step, the use of high amounts of oleic acid results in smaller nanoparticles; furthermore, determining the correct molar ratio between FeCl3 and the shielding agent will also result in smaller particles. The next factor is that the proper ratio of functional monomer, cross-linker and solvent will improve printing efficiency. Thus, it will produce MMIP with high selectivity in sample pre-treatment.
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Farooq S, Wu H, Nie J, Ahmad S, Muhammad I, Zeeshan M, Khan R, Asim M. Application, advancement and green aspects of magnetic molecularly imprinted polymers in pesticide residue detection. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 804:150293. [PMID: 34798762 DOI: 10.1016/j.scitotenv.2021.150293] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 09/01/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Molecularly imprinted polymers (MIPs) have added a vital contribution to food quality and safety with the effective extraction of pesticide residues due to their unique properties. Magnetic molecularly imprinted polymers (MMIPs) are a superior approach to overcome stereotypical limitations due to their unique core-shell and novel composite structure, including high chemothermal stability, rapid extraction, and high selectivity. Over the past two decades, different MMIPs have been developed for pesticide extraction in actual food samples with a complex matrix. Nevertheless, such developments are desirable, yet the synthesis and mode of application of MMIP have great potential as a green chemistry approach that can significantly reduce environmental pollution and minimize resource utilization. In this review, the MMIP application for single or multipesticide detection has been summarized by critiquing each method's uniqueness and efficiency in real sample analysis and providing a possible green chemistry exploration procedure for MMIP synthesis and application for escalated food and environmental safety.
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Affiliation(s)
- Saqib Farooq
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, PR China
| | - Haiyan Wu
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, PR China.
| | - Jiyun Nie
- College of Horticulture, Qingdao Agriculture University/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, PR China
| | - Shakeel Ahmad
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, PR China
| | - Ihsan Muhammad
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, PR China
| | - Muhammad Zeeshan
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, PR China
| | - Rayyan Khan
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao 266101, PR China
| | - Muhammad Asim
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao 266101, PR China
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Meseguer-Lloret S, Torres-Cartas S, Gómez-Benito C, Herrero-Martínez JM. Magnetic molecularly imprinted polymer for the simultaneous selective extraction of phenoxy acid herbicides from environmental water samples. Talanta 2021; 239:123082. [PMID: 34823860 DOI: 10.1016/j.talanta.2021.123082] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 01/30/2023]
Abstract
A selective magnetic molecularly imprinted polymer (MMIP) was synthetized with 4-chloro-2-methylphenoxyacetic acid as template and 4-vinylpiridine as monomer in presence of vinylized magnetite nanoparticles. Scanning electron microscopy, nitrogen adsorption-desorption isotherms, Fourier transform infrared spectrometry and vibrating sample magnetometry were applied to characterize the resulting material. The synthesized MMIP was applied as sorbent in magnetic molecularly imprinted solid-phase extraction (MMISPE) for selective extraction of a mixture of the five herbicides 4-chloro-2-methylphenoxyacetic acid (MCPA), 4-(4-chloro-2-methylphenoxy)butyric acid (MCPB), mecoprop (MCPP), fenoxaprop (FEN) and haloxyfop (HAL). Several parameters affecting the extraction conditions were optimized to achieve the best extraction performance. The best MMISPE combined with HPLC-DAD gave detection and quantification limits between 0.33 and 0.71 μg L-1 and 1.1-2.4 μg L-1, respectively, were obtained. The precision of the whole method provided RSD values below 7.3%, and the accuracy was demonstrated by the analysis of several water samples of different origins, with recoveries ranged from 77 to 98%. Moreover, a remarkable re-usability of the MMIP sorbent, more than 65 uses without losses in extraction capacity, was obtained.
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Affiliation(s)
- Susana Meseguer-Lloret
- Institut d'Investigació per a la Gestió Integrada de Zones Costaneres, Campus de Gandia, Universitat Politècnica de València, C/ Paranimf 1, 46730, Grao de Gandia, València, Spain.
| | - Sagrario Torres-Cartas
- Institut d'Investigació per a la Gestió Integrada de Zones Costaneres, Campus de Gandia, Universitat Politècnica de València, C/ Paranimf 1, 46730, Grao de Gandia, València, Spain
| | - Carmen Gómez-Benito
- Institut d'Investigació per a la Gestió Integrada de Zones Costaneres, Campus de Gandia, Universitat Politècnica de València, C/ Paranimf 1, 46730, Grao de Gandia, València, Spain
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Metwally MG, Benhawy AH, Khalifa RM, El Nashar RM, Trojanowicz M. Application of Molecularly Imprinted Polymers in the Analysis of Waters and Wastewaters. Molecules 2021; 26:6515. [PMID: 34770924 PMCID: PMC8587002 DOI: 10.3390/molecules26216515] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 10/24/2021] [Accepted: 10/25/2021] [Indexed: 11/16/2022] Open
Abstract
The increase of the global population and shortage of renewable water resources urges the development of possible remedies to improve the quality and reusability of waste and contaminated water supplies. Different water pollutants, such as heavy metals, dyes, pesticides, endocrine disrupting compounds (EDCs), and pharmaceuticals, are produced through continuous technical and industrial developments that are emerging with the increasing population. Molecularly imprinted polymers (MIPs) represent a class of synthetic receptors that can be produced from different types of polymerization reactions between a target template and functional monomer(s), having functional groups specifically interacting with the template; such interactions can be tailored according to the purpose of designing the polymer and based on the nature of the target compounds. The removal of the template using suitable knocking out agents renders a recognition cavity that can specifically rebind to the target template which is the main mechanism of the applicability of MIPs in electrochemical sensors and as solid phase extraction sorbents. MIPs have unique properties in terms of stability, selectivity, and resistance to acids and bases besides being of low cost and simple to prepare; thus, they are excellent materials to be used for water analysis. The current review represents the different applications of MIPs in the past five years for the detection of different classes of water and wastewater contaminants and possible approaches for future applications.
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Affiliation(s)
- Mahmoud G. Metwally
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt; (M.G.M.); (A.H.B.); (R.M.K.)
| | - Abdelaziz H. Benhawy
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt; (M.G.M.); (A.H.B.); (R.M.K.)
| | - Reda M. Khalifa
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt; (M.G.M.); (A.H.B.); (R.M.K.)
| | - Rasha M. El Nashar
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt; (M.G.M.); (A.H.B.); (R.M.K.)
| | - Marek Trojanowicz
- Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
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Zhao N, Bian Y, Dong X, Gao X, Zhao L. Magnetic solid-phase extraction based on multi-walled carbon nanotubes combined ferroferric oxide nanoparticles for the determination of five heavy metal ions in water samples by inductively coupled plasma mass spectrometry. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:1417-1427. [PMID: 34559076 DOI: 10.2166/wst.2021.321] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
An excellent magnetic multi-walled carbon nanotubes (MMWCNT) containing carboxyl material modified with ferroferric oxide (Fe3O4) nanoparticles was synthesized as the adsorbent for magnetic solid-phase extraction (MSPE) of five heavy metal ions (Pb2+, Cu2+, Co2+, Cd2+, Cr4+) in water samples followed by on-line inductively coupled plasma mass spectrometry (ICP-MS) detection. The characteristics of the adsorbent were analyzed using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), and vibrating sample magnetometer (VSM). Some factors affecting extraction efficiency including pH of sample solution, the amount of adsorbent, extraction method and time, concentration and volume of desorption solvent, desorption time and evaluation of coexisting ions were optimized. Under the optimum conditions, good linearity (r ≥ 0.9951) was obtained within the range of 0.1-50.0 ng·mL-1. The limits of detection (LODs) and limits of quantification (LOQs) were 4.0-25.0 ng·L-1 and 15.0-80.0 ng·L-1, respectively. And satisfactory recoveries of five heavy metal ions ranged from 81.11% to 105.53% were acquired, and the relative standard deviations (RSDs) were no more than 6.05%. The MMWCNT synthesized had strong adsorption force for the five investigated heavy metal ions, respectively. Hence, the proposed method was so suitable and sensitive that it can be applied to the determination of trace analysis of heavy metals in water samples.
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Affiliation(s)
- Ning Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China E-mail: ; These authors contributed equally to this work
| | - Yuwei Bian
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China E-mail: ; These authors contributed equally to this work
| | - Xinyi Dong
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China E-mail:
| | - Xun Gao
- School of Pharmacy, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, China
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China E-mail:
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Marfà J, Pupin RR, Sotomayor M, Pividori MI. Magnetic-molecularly imprinted polymers in electrochemical sensors and biosensors. Anal Bioanal Chem 2021; 413:6141-6157. [PMID: 34164705 DOI: 10.1007/s00216-021-03461-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 06/02/2021] [Accepted: 06/08/2021] [Indexed: 12/15/2022]
Abstract
Magnetic particles, as well as molecularly imprinted polymers, have revolutionized separation and bioanalytical methodologies in the 1980s due to their wide range of applications. Today, biologically modified magnetic particles are used in many scientific and technological applications and are integrated in more than 50,000 diagnostic instruments for the detection of a huge range of analytes. However, the main drawback of this material is their stability and high cost. In this work, we review recent advances in the synthesis and characterization of hybrid molecularly imprinted polymers with magnetic properties, as a cheaper and robust alternative for the well-known biologically modified magnetic particles. The main advantages of these materials are, besides the magnetic properties, the possibility to be stored at room temperature without any loss in the activity. Among all the applications, this work reviews the direct detection of electroactive analytes based on the preconcentration by using magnetic-MIP integrated on magneto-actuated electrodes, including food safety, environmental monitoring, and clinical and pharmaceutical analysis. The main features of these electrochemical sensors, including their analytical performance, are summarized. This simple and rapid method will open the way to incorporate this material in different magneto-actuated devices with no need for extensive sample pretreatment and sophisticated instruments.
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Affiliation(s)
- J Marfà
- Grup de Sensors i Biosensors, Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - R R Pupin
- Department of Analytical Chemistry, Institute of Chemistry, State University of São Paulo (UNESP), Araraquara, SP, 14801-970, Brazil
| | - Mpt Sotomayor
- Department of Analytical Chemistry, Institute of Chemistry, State University of São Paulo (UNESP), Araraquara, SP, 14801-970, Brazil
| | - M I Pividori
- Grup de Sensors i Biosensors, Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain. .,Institute of Biotechnology and Biomedicine, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain.
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Wang X, He F, Zhang L, Yu A. Application of micro-nanostructured magnetite in separating tetrabromobisphenol A and hexabromocyclododecane from environmental water by magnetic solid phase extraction. PLoS One 2021; 16:e0251021. [PMID: 33939758 PMCID: PMC8092778 DOI: 10.1371/journal.pone.0251021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 04/19/2021] [Indexed: 11/18/2022] Open
Abstract
Two typical brominated flame retardants (BFRs), namely, tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCD), were persistent organic pollutants widely detected in various environmental media. This study aimed to successfully synthesize micro-nano-structured magnetite particles (MNMPs) with surface modification by citric acid molecules. The synthesized composites served as an adsorbent for extracting TBBPA and HBCD from environmental water samples followed by gas chromatography–mass spectrometry analysis. The obtained MNMPs were characterized in terms of crystal structure, morphology, size distribution, hydrophobic and hydrophilic performance and magnetism. The results indicated that the MNMPs exhibited high surface area, good dispersibility, and strong magnetic responsiveness for separation. The parameters affecting the extraction efficiency were optimized, including sample pH, amount of sorbents, extraction time and desorption conditions. Under the optimum conditions, the recovery was 83.5 and 107.1%, limit of detection was 0.13 and 0.35μg/mL (S/N = 3), and limit of quantification was 0.37 and 0.59 μg/mL (S/N = 10) for TBBPA and HBCD respectively. The relative standard deviations obtained using the proposed method were less than 8.7%, indicating that the MNMP magnetic solid-phase extraction method had advantages of simplicity, good sensitivity and high efficiency for the extraction of the two BFRs from environmental water.
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Affiliation(s)
- Xiaoping Wang
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, Jiangsu, China
- Institute of Environmental Risk and Damage, Jiangsu Environmental Engineering Technology Co. LTD, Nanjing, Jiangsu, China
| | - Fengzhi He
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, Jiangsu, China
- Institute of Environmental Risk and Damage, Jiangsu Environmental Engineering Technology Co. LTD, Nanjing, Jiangsu, China
| | - Limin Zhang
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, Jiangsu, China
- Institute of Environmental Risk and Damage, Jiangsu Environmental Engineering Technology Co. LTD, Nanjing, Jiangsu, China
| | - Ang Yu
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, Jiangsu, China
- Institute of Environmental Risk and Damage, Jiangsu Environmental Engineering Technology Co. LTD, Nanjing, Jiangsu, China
- * E-mail:
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15
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Optimising factors affecting solid phase extraction performances of molecular imprinted polymer as recent sample preparation technique. Heliyon 2021; 7:e05934. [PMID: 33553728 PMCID: PMC7848654 DOI: 10.1016/j.heliyon.2021.e05934] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/30/2020] [Accepted: 01/06/2021] [Indexed: 01/20/2023] Open
Abstract
Molecular imprinted solid-phase extraction is the technique that uses molecular imprinted polymer as the sorbent in solid phase extraction. Molecular imprinted solid-phase extraction is effective and efficient for the extraction process and cleaning as compared with solid phase extraction (SPE) without molecular imprinted polymer. The complexity of variables in molecular imprinted solid-phase extraction arise as problems in the analysis, therefore it is necessary to optimize the extraction conditions of molecular imprinted solid-phase extraction. To achieve the sorption equilibrium and achieve the shortest time, certain parameters such as contact time, ion strength of sample, pH of sample, amount of sorbent, sample flow rate, addition of salt and buffer solution, washing solvent, elution solvent, and loading solvent need to be optimized. The selection of suitable properties and quantities of each factor greatly affect the formation of appropriate interactions between the sorbent and analytes. Percentage recovery is also influenced by formation of the appropriate bonds, sample flow rates, extraction time, salt addition, and sorbent mass. Therefore, in the future, molecular imprinted solid-phase extraction optimization has to consider and adjust various factors reviewed in this paper to form appropriate interactions between the absorbent and target molecules which have an impact on the optimal results.
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16
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Lu YC, Xiao WW, Wang JY, Xiong XH. Rapid isolation and determination of bisphenol A in complicated matrices by magnetic molecularly imprinted electrochemical sensing. Anal Bioanal Chem 2020; 413:389-401. [PMID: 33145646 DOI: 10.1007/s00216-020-03006-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/16/2020] [Accepted: 10/12/2020] [Indexed: 01/27/2023]
Abstract
Because of its widespread distribution in the environment, bisphenol A (BPA) has become a global concern as an endocrine disruptor and a threat to human health through the food chain. Thus an efficient determination method is urgently needed for monitoring the levels of BPA. Herein, a novel electrochemical technique for the detection of BPA was performed by synchronous extraction and pre-concentration of BPA onto magnetic molecularly imprinted polymer (BMMIP), with subsequent readout on a magneto-actuated glassy carbon electrode (MGCE) by differential pulse voltammetry. Compared to the current methods of BPA determination, this BMMIP-based electrochemical sensor (BMMIPs@MGCE) not only simplifies the sample handling procedures substantially, without filtration, centrifugation, or other complex operations, but also can be easily renewed by a controllable magnetic field. As a sensor component, the core-shell BMMIPs exhibited excellent binding capacity (Qe = 82.5 mg g-1), short adsorption equilibrium time (30 s), and outstanding selectivity (k' = 7.239) towards BPA, as well as stability and recyclability. Importantly, the BMMIPs@MGCE sensor was successfully applied for the on-site monitoring and rapid detection of BPA in complicated real-world specimens, with good recoveries (81.31-119.77%) and a low limit of detection (0.133 μmol L-1). Therefore, the stable and low-cost BMMIPs@MGCE sensor provides a new approach for the rapid determination of BPA in the field of environmental control and food safety. Graphical abstract.
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Affiliation(s)
- Yi Chen Lu
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, Jiangsu, China.
| | - Wei Wei Xiao
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, Jiangsu, China
| | - Jun Yun Wang
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, Jiangsu, China
| | - Xiao Hui Xiong
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, Jiangsu, China.
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17
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Arabi M, Ostovan A, Bagheri AR, Guo X, Wang L, Li J, Wang X, Li B, Chen L. Strategies of molecular imprinting-based solid-phase extraction prior to chromatographic analysis. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115923] [Citation(s) in RCA: 197] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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18
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Dong J, Feng Z, Kang S, An M, Wu G. Magnetic solid-phase extraction based on magnetic amino modified multiwalled carbon nanotubes for the fast determination of seven pesticide residues in water samples. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:2747-2756. [PMID: 32930306 DOI: 10.1039/d0ay00288g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A rapid and simple analytical method based on magnetic solid-phase extraction with magnetic amino modified multiwalled carbon nanotubes with ultra-high performance liquid chromatography-tandem mass spectrometry is reported for the determination of seven pesticides (futriafol, metalaxyl, myclobutanil, napropamide, epoxiconazole, fipronil and diniconazole) in water samples. In this study, magnetic amino modified multi-walled carbon nanotubes were synthesized and selected as a new kind of material to adsorb pesticides in the water samples. Various magnetic solid-phase extraction parameters, such as the amount and type of adsorbent, extraction methods, extraction time, the type and volume of desorption solvent, desorption time and solution ionic strength, were systematically optimized. Under optimum conditions, the method validation results showed good linearity and recoveries. The calibration curves were in the range of 1.0-100 ng mL-1 for napropamide, epoxiconazole, metalaxyl, and fipronil, while they were 5.0-500 ng mL-1 for futriafol, myclobutanil, and diniconazole, with determination coefficients (R2) higher than 0.9909. The limits of quantification were 1.0-5.0 ng mL-1 and the limits of detection were 0.3-1.5 ng mL-1. The recoveries of the seven pesticides ranged from 80.4% to 103.2%. This developed method, which is more convenient and effective in comparison with traditional methods, has been successfully applied for the analysis of pesticides in water samples qualitatively and quantitatively.
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Affiliation(s)
- JiaNi Dong
- Baotou Medical College, Baotou, Inner Mongolia 014060, China.
| | - ZhiAo Feng
- Baotou Medical College, Baotou, Inner Mongolia 014060, China.
| | - SongSong Kang
- Baotou Medical College, Baotou, Inner Mongolia 014060, China.
| | - Ming An
- Baotou Medical College, Baotou, Inner Mongolia 014060, China.
| | - GuoDong Wu
- Baotou Medical College, Baotou, Inner Mongolia 014060, China.
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19
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PEG-modified magnetic Schiff base network-1 materials for the magnetic solid phase extraction of benzoylurea pesticides from environmental water samples. J Chromatogr A 2020; 1619:460950. [DOI: 10.1016/j.chroma.2020.460950] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/03/2020] [Accepted: 02/04/2020] [Indexed: 01/12/2023]
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20
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Klongklaew P, Kanatharana P, Bunkoed O. Development of doubly porous composite adsorbent for the extraction of fluoroquinolones from food samples. Food Chem 2020; 309:125685. [DOI: 10.1016/j.foodchem.2019.125685] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 07/01/2019] [Accepted: 10/08/2019] [Indexed: 12/12/2022]
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21
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Nasiri M, Ahmadzadeh H, Amiri A. Sample preparation and extraction methods for pesticides in aquatic environments: A review. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115772] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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22
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Lu YC, Mao JH, Zhang W, Wang C, Cao M, Wang XD, Wang KY, Xiong XH. A novel strategy for selective removal and rapid collection of triclosan from aquatic environment using magnetic molecularly imprinted nano-polymers. CHEMOSPHERE 2020; 238:124640. [PMID: 31524609 DOI: 10.1016/j.chemosphere.2019.124640] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/18/2019] [Accepted: 08/21/2019] [Indexed: 06/10/2023]
Abstract
Triclosan (TCS) is a kind of chronic toxicity to aquatic organisms. Due to its highly effective antimicrobial, TCS has been widely applied in personal-care products, which naturally poses a potential risk to the ecological system and human health since its release into water-ecological environment. Therefore, it urgently demands a selective, easily separated, recyclable, and low-cost adsorbent to remove the residues of TCS from aquatic environments. In this study, a novel magnetic molecularly imprinted nano-polymers (TMIPs) were prepared for selective adsorption and convenient collection of TCS in aquatic samples, based on a core-shell technique using TCS as template molecule and SiO2-coated Fe3O4 nanoparticles as the support substrate. The functional groups, particle size, morphology and magnetic property of TMIPs were characterized by Fourier-transform infrared spectroscopy, scanning electron microscope, transmission electron microscopy and vibrating sample magnetometer, respectively. The obtained TMIPs possessed excellent adsorption capacity (Qe = 53.12 mg g-1), speedy adsorption equilibrium time (2 min) and high selectivity (k' = 6.321) for TCS. Moreover, the pH-tolerance and stability tests manifested that the adsorption capacity of TMIPs for TCS was acid-resistance and could retain 94.2% of the maximum Qe after 5 times removal-regeneration cycles. The feature of magnetically susceptibility can simplify the procedures of sample handling in TCS determination, because the TMIPs of TCS are easy to be recycled from aquatic samples. As an application demonstration, the toxicity test in microalgae confirmed that a tiny amount of TMIPs could significantly eliminate the toxic effect of TCS on Chlamydomonas reinhardtii via the efficient binding with TCS.
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Affiliation(s)
- Yi Chen Lu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China.
| | - Jia Hao Mao
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China
| | - Wen Zhang
- The State Light Industry Food Quality Supervision and Detection Station, Nanjing, 210009, China
| | - Cheng Wang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China
| | - Min Cao
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China
| | - Xiao Dong Wang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China
| | - Kai Yin Wang
- The State Light Industry Food Quality Supervision and Detection Station, Nanjing, 210009, China
| | - Xiao Hui Xiong
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, China.
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23
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Zhou T, Che G, Ding L, Sun D, Li Y. Recent progress of selective adsorbents: From preparation to complex sample pretreatment. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.115678] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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24
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Song L, He J, Chen N, Huang Z. Combined biocompatible medium with molecularly imprinted polymers for determination of aflatoxins B1 in real sample. J Sep Sci 2019; 42:3679-3687. [DOI: 10.1002/jssc.201900564] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 10/01/2019] [Accepted: 10/01/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Lixin Song
- Henan Vocational College of Water Conservancy and Environment Zhengzhou P. R. China
| | - Juan He
- School of Chemical Engineering and EnvironmentHenan University of Technology Zhengzhou P. R. China
| | - Ningning Chen
- School of Chemical Engineering and EnvironmentHenan University of Technology Zhengzhou P. R. China
| | - Zhipeng Huang
- School of Chemical Engineering and EnvironmentHenan University of Technology Zhengzhou P. R. China
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25
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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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26
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Lu YC, Guo MH, Mao JH, Xiong XH, Liu YJ, Li Y. Preparation of core-shell magnetic molecularly imprinted polymer nanoparticle for the rapid and selective enrichment of trace diuron from complicated matrices. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 177:66-76. [PMID: 30974245 DOI: 10.1016/j.ecoenv.2019.03.117] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 03/02/2019] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
A novel magnetic MIPs (DUMIPs) was prepared by surface molecular imprinting method using superparamagnetic core-shell nanoparticle (Fe3O4@SiO2) as the sacrificial support matrix, herbicide diuron as template, α-methacrylic acid as the functional monomer, trimethylolpropane trimethacrylate as the crosslinker, azobisisobutyronitrile as the initiator, and acetonitrile as the porogen. Highly cross-linked porous surface and excellent magnetic property were characterized by Fourier-transform infrared spectroscopy, transmission electron microscopy, and vibrating sample magnetometer, respectively. The adsorption capacity of DUMIPs was 8.1 mg g-1, 2.6-fold over its corresponding non-imprinted polymers (DUNIPs). The adsorption in DUMIPs was considered as multilayer adsorption and posed high affinity to diuron, due to the better fitting to Freundilich isotherm. Competitive recognition study demonstrated DUMIPs had highly selective binding diuron. DUMIPs, as an influential sorbent has been used for selective extraction of diuron from environmental samples (paddy field water, paddy soil and grain seedlings) and the elution was determined by high efficiency liquid chromatography (HPLC). In this analytical method, various factors affecting the extraction efficiency such as pH, sorbent dosage, utilization efficiency and volumes of eluent were simultaneously investigated. Under the optimal conditions, the linearity of the method obtained is in the range of 0.02-10.0 mg L-1. The limit of detection is 0.012 mg L-1. In four spiked levels (0.04, 0.2, 1.0, and 4.0 mg kg-1), the recoveries of diuron in real samples are in the range of 83.56%-116.10% with relative standard deviations in the range of 1.21-6.81%. Importantly, compared to C18-SPE column, the MMIPs exhibited convenient separation by external magnetic field, strong clean-up capacity, and selective enrichment for diuron. Thus, the DUMIPs-based method is great potential for efficient sample preparation in the determination of trace amounts of diuron residues in complex matrices.
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Affiliation(s)
- Yi Chen Lu
- College of Food and Light Industry, Nanjing Tech University, Puzhu South Street No.30, Nanjing, 211816, China.
| | - Meng Han Guo
- College of Food and Light Industry, Nanjing Tech University, Puzhu South Street No.30, Nanjing, 211816, China
| | - Jia Hao Mao
- College of Food and Light Industry, Nanjing Tech University, Puzhu South Street No.30, Nanjing, 211816, China
| | - Xiao Hui Xiong
- College of Food and Light Industry, Nanjing Tech University, Puzhu South Street No.30, Nanjing, 211816, China
| | - Yuan Jian Liu
- College of Food and Light Industry, Nanjing Tech University, Puzhu South Street No.30, Nanjing, 211816, China
| | - Yi Li
- College of Food and Light Industry, Nanjing Tech University, Puzhu South Street No.30, Nanjing, 211816, China
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27
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Chen JN, Lian YJ, Zhou YR, Wang MH, Zhang XQ, Wang JH, Wu YN, Wang ML. Determination of 107 Pesticide Residues in Wolfberry with Acetate-buffered Salt Extraction and Sin-QuEChERS Nano Column Purification Coupled with Ultra Performance Liquid Chromatography Tandem Mass Spectrometry. Molecules 2019; 24:molecules24162918. [PMID: 31408943 PMCID: PMC6719108 DOI: 10.3390/molecules24162918] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/03/2019] [Accepted: 08/09/2019] [Indexed: 11/30/2022] Open
Abstract
A multi-residue method for the determination of 107 pesticide residues in wolfberry has been developed and validated. Similar pretreatment approaches were compared, and the linearity, matrix effect, analysis limits, precision, stability and accuracy were validated, which verifies the satisfactory performance of this new method. The LODs and LOQs were in the range of 0.14–1.91 µg/kg and 0.46–6.37 µg/kg, respectively. The recovery of analytes at three fortification levels (10 µg/kg, 50 µg/kg, 100 µg/kg) ranged from 63.3–123.0%, 72.0–118.6% and 67.0–118.3%, respectively, with relative standard deviations (RSDs) below 15.0%. The proposed method was applied to the analysis of fifty wolfberry samples collected from supermarkets, pharmacies and farmers’ markets in different cities of Shandong Province. One hundred percent of the samples analyzed included at least one pesticide, and a total of 26 pesticide residues was detected in fifty samples, which mainly were insecticides and bactericide. Several pesticides with higher detection rates were 96% for acetamiprid, 82% for imidacloprid, 54% for thiophanate-methyl, 50% for blasticidin-S, 42% for carbendazim, 42% for tebuconazole and 36% for difenoconazole in wolfberry samples. This study proved the adaptability of the developed method to the detection of multiple pesticide residues in wolfberry and provided basis for the research on the risks to wolfberry health.
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Affiliation(s)
- Jia-Nan Chen
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Yu-Jing Lian
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Yi-Ran Zhou
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Ming-Hui Wang
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Xi-Qing Zhang
- Jieke Testing Service Co., Ltd., Yantai 265231, China
| | - Jian-Hua Wang
- Agricultural College, Shandong Agricultural University, Taian 271018, China
| | - Yong-Ning Wu
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
- China National Center for Food Safety Risk Assessment, Beijing 100017, China
| | - Ming-Lin Wang
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China.
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28
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Synthesis and characterization of core–shell magnetic molecularly imprinted polymers for selective recognition and determination of quercetin in apple samples. Food Chem 2019; 287:100-106. [DOI: 10.1016/j.foodchem.2019.02.069] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/28/2019] [Accepted: 02/15/2019] [Indexed: 12/16/2022]
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29
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Tian X, She C, Qi Z, Xu X. Magnetic-graphene oxide based molecularly imprinted polymers for selective extraction of microsystin-LR prior to the determination by HPLC. Microchem J 2019. [DOI: 10.1016/j.microc.2019.02.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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30
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Zhou T, Ding L, Che G, Jiang W, Sang L. Recent advances and trends of molecularly imprinted polymers for specific recognition in aqueous matrix: Preparation and application in sample pretreatment. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.02.028] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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31
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Extraction of atenolol from spiked blood serum using a molecularly imprinted polymer sorbent obtained by precipitation polymerization. Heliyon 2019; 5:e01533. [PMID: 31049441 PMCID: PMC6479165 DOI: 10.1016/j.heliyon.2019.e01533] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 03/14/2019] [Accepted: 04/15/2019] [Indexed: 01/31/2023] Open
Abstract
Atenolol (ATE) is a cardio-selective β-blocker that is used in the treatment of hypertension over extended periods. However, ATE, like propranolol, has major potential for misuse as a performance-enhancing drug in several sports. Therefore, an efficient and selective separation method is required to detect and monitor the level of ATE in the body. This paper presents a molecularly imprinted polymer with specific and selective binding to ATE using precipitation polymerization. We show that when employed in an optimized molecular imprinted solid phase extraction (MI-SPE) protocol, recoveries of 93.65 ± 1.29% from spiked blood serum with excellent discrimination from other β-blocker drugs is possible. The methodology used in this study includes molecular modeling interaction between ATE and itaconic acid (ITA) as functional monomer, followed by determination of binding constants with spectrophotometry, synthesis of the polymer using precipitation polymerization and ending with characterization and application of polymers to extract ATE in serum. Docking analysis revealed a binding affinity between ATE and ITA of −2.0 kcal/mol with the formation of hydrogen bonding. The association constant between ATE and ITA was studied by UV titration in two different solvents, with evidence of an association constant 6.277 × 102 M−1 measured in acetonitrile: methanol (1:1). An optimized MI-SPE protocol was developed for the extraction of ATE from spiked blood serum, obtaining recoveries of 93.65% with excellent selectivity toward other β-blocker drugs.
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32
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Farooq S, Nie J, Cheng Y, Yan Z, Li J, Bacha SAS, Mushtaq A, Zhang H. Molecularly imprinted polymers' application in pesticide residue detection. Analyst 2019; 143:3971-3989. [PMID: 30058662 DOI: 10.1039/c8an00907d] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecularly imprinted polymers (MIPs) are produced using molecular imprinting technology (MIT) and have specific analyte-binding abilities and unique properties, including chemical and thermal stability, reusability, high selectivity, and high sensitivity. The application of MIPs in the detection of pesticides represents an advance and a superior scientific approach owing to their detection and characterization of trace levels in comparison with other methods. In this review, we have summarized the pre-treatment extraction of pesticides with different types of molecularly imprinted polymer for the detection of single and multiple pesticides by elaborating upon their specific extraction efficiency. The importance of different polymerization methods, functional monomers and cross-linkers is highlighted. The aim of this study is to investigate the importance of the application of MIPs in the detection of pesticides and recent advances in the last few years to overcome the limitations of previously developed methods. Existing restrictions and required future aspects are discussed.
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Affiliation(s)
- Saqib Farooq
- Institute of Pomology, Chinese Academy of Agricultural Sciences, 98# Xinghai South Street, 125100 Xingcheng, Liaoning Province, PR China
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33
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Determination of gentamicin sulfate by batch-injection amperometry after solid-phase extraction using a kanamycin-template imprinted polymer. Microchem J 2019. [DOI: 10.1016/j.microc.2018.10.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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34
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Zhang J, Chen Y, Wu W, Wang Z, Chu Y, Chen X. Hollow porous dummy molecularly imprinted polymer as a sorbent of solid-phase extraction combined with accelerated solvent extraction for determination of eight bisphenols in plastic products. Microchem J 2019. [DOI: 10.1016/j.microc.2018.12.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Huang W, Hou X, Tong Y, Tian M. Determination of sialic acid in serum samples by dispersive solid-phase extraction based on boronate-affinity magnetic hollow molecularly imprinted polymer sorbent. RSC Adv 2019; 9:5394-5401. [PMID: 35515918 PMCID: PMC9060700 DOI: 10.1039/c9ra00511k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 02/04/2019] [Indexed: 11/21/2022] Open
Abstract
Boronate-affinity magnetic hollow molecularly imprinted polymers (B-MhMIPs) were prepared with sialic acid (SA) as the template, 3-aminophenylboronic acid (APBA) as the functional monomer and glycidilmethacrylate (GMA) as the co-monomer to chemisorb Fe3O4 nanoparticles. Furthermore, the hollow structure made the nanoparticles have more binding sites at both internal and external surfaces, which can facilitate the removal of template molecules from polymers and enhance the adsorption abilities towards SA. After optimizing, the adsorption pH was controlled at 4.0, and this was different from most cis-diol-containing compounds. Under the optimal conditions, the limit of detection for SA was 0.025 μg mL-1 (n = 3). This method was applied to analyze serum samples with different spiked levels, and the recoveries of the SA were in the range of 70.9-106.2%. These results confirmed the superiority of the B-MhMIPs for selective and efficient enrichment of trace SA from complex matrices.
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Affiliation(s)
- Wei Huang
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University Harbin 150025 China
| | - Xingyu Hou
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University Harbin 150025 China
| | - Yukui Tong
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University Harbin 150025 China
| | - Miaomiao Tian
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University Harbin 150025 China
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Hu C, Yang Z, Yan F, Sun B. Extraction of the toluene exposure biomarkers hippuric acid and methylhippuric acid using a magnetic molecularly imprinted polymer, and their quantitation by LC-MS/MS. Mikrochim Acta 2019; 186:135. [DOI: 10.1007/s00604-019-3239-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/05/2019] [Indexed: 12/17/2022]
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Li Z, Qian Z, Hu S, Gong T, Xian Q. Molecularly imprinted solid phase extraction coupled with gas chromatography-mass spectrometry for determination of N-Nitrosodiphenylamine in water samples. CHEMOSPHERE 2018; 212:872-880. [PMID: 30195167 DOI: 10.1016/j.chemosphere.2018.08.159] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/25/2018] [Accepted: 08/30/2018] [Indexed: 06/08/2023]
Abstract
In this study, the molecularly imprinted polymers (MIPs) with high specific surface area and extraction efficiency of N-Nitrosodiphenylamine (NDPhA) were successfully prepared and a highly sensitive and selective method was developed for determination of NDPhA in water samples using MIPs solid-phase extraction (SPE) coupled with gas chromatography mass spectrometry (GC-MS) detection. The MIPs were successfully prepared using the method of precipitation polymerization and using methacrylic acid as the functional monomer, ethylene glycol dimethacrylate as the cross-linker, and N, N-Diphenylformamide as the template molecule. The newly synthesized MIPs were characterized and used as SPE sorbents. Under the optimized conditions, the average recoveries of NDPhA spiked in ultrapure water were higher than 94% ± 2.9% at three different concentrations and the limit of detection and limit of quantitation were 0.8 ng L-1 and 2.4 ng L-1, respectively. Moreover, the high selectivity of MIPs was attained and the satisfactory recoveries of NDPhA which were spiked in to real samples were achieved in the range of 92-107% with relative standard deviations (RSDs) within 0.3-7.9%. The low levels of NDPhA were detected in the two of twelve wastewater samples with concentrations of 5.6 ng L-1 and 3.6 ng L-1 with RSDs of 5.6% and 2.8%, respectively. The developed MIP-SPE method was proved to be practically feasible for selective extraction and enrichment of NDPhA in real water samples.
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Affiliation(s)
- Zhigang Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Zongyao Qian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Shaoyang Hu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Tingting Gong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Qiming Xian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
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Affiliation(s)
- Joseph J. BelBruno
- Dartmouth College, Department of Chemistry, Hanover, New Hampshire 03755, United States
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Kim Y, Jeon M, Min H, Son J, Lee J, Kwon OS, Moon MH, Kim KH. Development of a multi-functional concurrent assay using weak cation-exchange solid-phase extraction (WCX-SPE) and reconstitution with a diluted sample aliquot for anti-doping analysis. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2018; 32:897-905. [PMID: 29572989 DOI: 10.1002/rcm.8119] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 02/09/2018] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE In addition to the development of adequate screening methods for multiple compounds, the World Anti-Doping Agency (WADA) requires anti-doping laboratories to analyze prohibited substances and their metabolites from various classes. This task presents a difficult challenge for all agencies and interests involved in the field of doping control. METHODS A screening method is reported in which hybrid sample preparation was performed using a combination of weak cation-exchange solid-phase extraction (WCX-SPE) and the 'Dilute and Shoot' strategy in order to take advantage of both the methodologies. Target substances were extracted using a WCX cartridge and reconstituted with a diluted sample aliquot that included 20% of an untreated urine sample. The target substances were further analyzed by high-performance liquid chromatography/triple quadrupole mass spectrometry (LC/MS). RESULTS The SPE procedure was optimized using a cartridge-washing step, elution conditions, and elution volume. The cartridge-washing step, which was performed using 10% methanol, improved the overall recovery of target substances. Since the recovery was observed to vary according to the pH of the eluting solution, we applied an elution step using both an acid and a basic organic solvent to achieve complementary recovery. Reconstitution of the diluted aliquot sample was performed to recover the polar substances. CONCLUSIONS The method was validated and applied to real samples in accordance with the external quality assessment scheme of WADA and to the previously reported samples that had provided positive test results. This novel method using hybrid sample preparation and LC/MS could be useful to screen multiple classes of the 264 targeted substances in anti-doping analysis.
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Affiliation(s)
- Yongseok Kim
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
- Department of Chemistry, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Mijin Jeon
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Hophil Min
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Junghyun Son
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Jaeick Lee
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Oh-Seung Kwon
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Ki Hun Kim
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
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Rapid Multi-Residue Analysis of Herbicides with Endocrine-Disrupting Properties in Environmental Water Samples Using Ultrasound-Assisted Dispersive Liquid–Liquid Microextraction and Gas Chromatography–Mass Spectrometry. Chromatographia 2018. [DOI: 10.1007/s10337-018-3530-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ji WH, Guo YS, Wang X, Guo DS. A water-compatible magnetic molecularly imprinted polymer for the selective extraction of risperidone and 9-hydroxyrisperidone from human urine. Talanta 2018; 181:392-400. [DOI: 10.1016/j.talanta.2018.01.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/06/2018] [Accepted: 01/10/2018] [Indexed: 01/23/2023]
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Rapid, low temperature synthesis of molecularly imprinted covalent organic frameworks for the highly selective extraction of cyano pyrethroids from plant samples. Anal Chim Acta 2018; 1001:179-188. [DOI: 10.1016/j.aca.2017.12.001] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 12/12/2017] [Accepted: 12/12/2017] [Indexed: 01/13/2023]
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Abidi H, Ghaedi M, Rafiei A, Jelowdar A, Arabi M, Ostovan A, Asfaram A. A molecularly imprinted polymer coupled with high-performance liquid chromatography-UV for the determination of albendazole in plasma and urine samples: CCD-RSM design. NEW J CHEM 2018. [DOI: 10.1039/c8nj02893a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present study attempted to develop a fast and sensitive ultrasound-assisted-dispersive-micro-solid phase extraction method for the separation and preconcentration of albendazole from plasma and urine samples.
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Affiliation(s)
- Hassan Abidi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences
- Ahvaz
- Iran
- Department of Parasitology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences
- Ahvaz
| | | | - Abdollah Rafiei
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences
- Ahvaz
- Iran
- Department of Parasitology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences
- Ahvaz
| | - Ali Jelowdar
- Department of Parasitology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences
- Ahvaz
- Iran
| | - Maryam Arabi
- Chemistry Department, Yasouj University
- Yasouj
- Iran
| | | | - Arash Asfaram
- Medicinal Plants Research Center, Yasuj University of Medical Sciences
- Yasuj
- Iran
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Zheng L, Zhao XE, Ji W, Wang X, Tao Y, Sun J, Xu Y, Wang X, Zhu S, You J. Core-shell magnetic molecularly imprinted polymers used rhodamine B hydroxyproline derivate as template combined with in situ derivatization for the specific measurement of L-hydroxyproline. J Chromatogr A 2018; 1532:30-39. [DOI: 10.1016/j.chroma.2017.11.053] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 11/08/2017] [Accepted: 11/22/2017] [Indexed: 11/24/2022]
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Liu JM, Wei SY, Liu HL, Fang GZ, Wang S. Preparation and Evaluation of Core⁻Shell Magnetic Molecularly Imprinted Polymers for Solid-Phase Extraction and Determination of Sterigmatocystin in Food. Polymers (Basel) 2017; 9:E546. [PMID: 30965842 PMCID: PMC6418914 DOI: 10.3390/polym9100546] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 02/07/2023] Open
Abstract
Magnetic molecularly imprinted polymers (MMIPs), combination of outstanding magnetism with specific selective binding capability for target molecules, have proven to be attractive in separation science and bio-applications. Herein, we proposed the core⁻shell magnetic molecularly imprinted polymers for food analysis, employing the Fe₃O₄ particles prepared by co-precipitation protocol as the magnetic core and MMIP film onto the silica layer as the recognition and adsorption of target analytes. The obtained MMIPs materials have been fully characterized by scanning electron microscope (SEM), Fourier transform infrared spectrometer (FT-IR), vibrating sample magnetometer (VSM), and re-binding experiments. Under the optimal conditions, the fabricated Fe₃O₄@MIPs demonstrated fast adsorption equilibrium, a highly improved imprinting capacity, and excellent specificity to target sterigmatocystin (ST), which have been successfully applied as highly efficient solid-phase extraction materials followed by high-performance liquid chromatography (HPLC) analysis. The MMIP-based solid phase extraction (SPE) method gave linear response in the range of 0.05⁻5.0 mg·L-1 with a detection limit of 9.1 µg·L-1. Finally, the proposed method was used for the selective isolation and enrichment of ST in food samples with recoveries in the range 80.6⁻88.7% and the relative standard deviation (RSD) <5.6%.
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Affiliation(s)
- Jing-Min Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University (BTBU), Beijing 100048, China.
- Research Center of Food Science and Human Health, School of Medicine, Nankai University, Tianjin 300071, China.
| | - Shu-Yuan Wei
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Hui-Lin Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University (BTBU), Beijing 100048, China.
| | - Guo-Zhen Fang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Shuo Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University (BTBU), Beijing 100048, China.
- Research Center of Food Science and Human Health, School of Medicine, Nankai University, Tianjin 300071, China.
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Ji W, Zhang M, Yan H, Zhao H, Mu Y, Guo L, Wang X. Selective extraction and determination of chlorogenic acids as combined quality markers in herbal medicines using molecularly imprinted polymers based on a mimic template. Anal Bioanal Chem 2017; 409:7087-7096. [DOI: 10.1007/s00216-017-0667-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/17/2017] [Accepted: 09/21/2017] [Indexed: 12/31/2022]
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Gao D, Wang DD, Fu QF, Wang LJ, Zhang KL, Yang FQ, Xia ZN. Preparation and evaluation of magnetic molecularly imprinted polymers for the specific enrichment of phloridzin. Talanta 2017; 178:299-307. [PMID: 29136826 DOI: 10.1016/j.talanta.2017.09.058] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/13/2017] [Accepted: 09/17/2017] [Indexed: 10/18/2022]
Abstract
In present study, magnetic molecularly imprinted polymers (MMIPs) were successfully prepared for specific recognition and selective enrichment of phloridzin from the leaves of Malus doumeri (Bois) A. Chev and rats' plasma. The magnetic Fe3O4 were prepared by the solvothermal reaction method and followed by the modification of TEOS and functionalization with APTES. Using functionalized Fe3O4 particles as the magnetic cores, phloridzin as template, ethylene glycol dimethacrylate (EGDMA) as cross-linker and 2,2-azobisisobutyonnitrile (AIBN) as initiator, the MMIPs were prepared through APTES to associate the template on the surface of the magnetic substrate. The structural features and morphological characterizations of MMIPs were performed by FT-IR, SEM, TEM, XRD, TGA and VSM. The adsorption experiments revealed that the MMIPs presented high selective recognition property to phloridzin. The selectivity experiment indicated that the adsorption capacity and selectivity of polymers to phloridzin was higher than that of baicalin and 2,3,5,4'-ttrahydroxy stilbene-2-O-β-D-glucoside. Furthermore, the MMIPs were employed as adsorbents for extraction and enrichment of phloridzin from the leaves of M. doumeri and rats' plasma. The recoveries of phloridzin in the leaves of M. doumeri ranged from 81.45% to 90.27%. The maximum concentration (Cmax) of phloridzin in rats' plasma was detected as 12.19 ± 0.84μg/mL at about 15min after oral administration of phloridzin (200mg/kg). These results demonstrate that the prepared MMIPs are suitable for the selective adsorption of phloridzin from complex samples such as natural medical plants and biological samples.
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Affiliation(s)
- Die Gao
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Dan-Dan Wang
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Qi-Feng Fu
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Lu-Jun Wang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Kai-Lian Zhang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Zhi-Ning Xia
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.
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