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Vidal DF, Pires BC, Borges MMC, de Oliveira HL, Silva CF, Borges KB. Magnetic solid-phase extraction based on restricted-access molecularly imprinted polymers for ultrarapid determination of ractopamine residues from food samples by capillary electrophoresis. J Chromatogr A 2024; 1720:464809. [PMID: 38490141 DOI: 10.1016/j.chroma.2024.464809] [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: 12/27/2023] [Revised: 03/06/2024] [Accepted: 03/08/2024] [Indexed: 03/17/2024]
Abstract
An ultrafast, efficient, and eco-friendly method combining magnetic solid phase extraction and capillary electrophoresis with diode array detection have been developed to determine ractopamine residues in food samples. A restricted access material based on magnetic and mesoporous molecularly imprinted polymer has been properly synthesized and characterized, demonstrating excellent selectivity and high adsorbent capacity. Short-end injection capillary electrophoresis method was optimized: 75 mM triethylamine pH 7 as BGE, -20 kV, 50 mbar by hydrodynamic injection during 8 s, and capillary temperature at 25 °C; reaching ultrafast ractopamine analysis (∼0.6 min) with good peak asymmetry, and free from interfering and/or baseline noise. After sample preparation optimization, the conditions were: 1000 µL of sample at pH 6, 20 mg of adsorbent, stirring time of 120 s, 250 µL of ultrapure water as washing solvent, 1000 µL of methanol: acetic acid (7: 3, v/v) as eluent, and the adsorbent can be reused four times. In these conditions, the analytical method showed recoveries around to 100 %, linearity ranged from 9.74 to 974.0 µg kg-1, correlation coefficient (r) ≥ 0,99 in addition to adequate precision, accuracy, and robustness. After proper validation, the method was successfully applied in the analysis ractopamine residues in bovine milk and bovine and porcine muscle.
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Affiliation(s)
- Daniel Ferreira Vidal
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Bruna Carneiro Pires
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Marcella Matos Cordeiro Borges
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Hanna Leijoto de Oliveira
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Camilla Fonseca Silva
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Keyller Bastos Borges
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil.
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Vidal DF, Silva CF, Borges MMC, Nascimento CS, Borges KB. Magnetic and mesoporous molecularly imprinted polymer synthesized by rational computation design: Sample preparation and analysis of ractopamine. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1227:123843. [PMID: 37535992 DOI: 10.1016/j.jchromb.2023.123843] [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: 05/22/2023] [Revised: 07/19/2023] [Accepted: 07/24/2023] [Indexed: 08/05/2023]
Abstract
Through density functional theory calculations was studied theoretically the formation process of a magnetic and mesoporous molecularly imprinted polymer for ractopamine (RAC), evaluating the molecular electrostatic potential map, functional monomers, functional monomer / template stoichiometry and crosslink agents. The results revealed that the best conditions for the synthesis were established with acrylic acid as functional monomer in a 1: 4 stoichiometry using acetonitrile as the solvent and ethylene glycol dimethacrylate as crosslink agent. It was observed that nine hydrogen bonds established between the RAC and acrylic acid play a key role on the pre-polymerization complex. In addition, three analytical methods using HPLC, UHPLC and CE instruments were optimized for rapid analysis. The adsorbent was experimentally synthesized considering the best conditions found at the molecular level and characterized by FTIR, DRX, TGA, SEM, TEM, surface analysis, and wettability. After that, the synthesized material was used in magnetic solid phase extraction combined with capillary electrophoresis in a preliminary RAC recovery study from milk samples. Finally, greenness metric with a score of 0.55 have been obtained for the sample preparation procedure using the online AGREEprep metric.
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Affiliation(s)
- Daniel Ferreira Vidal
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160, São João del-Rei, Minas Gerais, Brazil
| | - Camilla Fonseca Silva
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160, São João del-Rei, Minas Gerais, Brazil
| | - Marcella Matos Cordeiro Borges
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160, São João del-Rei, Minas Gerais, Brazil
| | - Clebio Soares Nascimento
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160, São João del-Rei, Minas Gerais, Brazil
| | - Keyller Bastos Borges
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160, São João del-Rei, Minas Gerais, Brazil.
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Suzaei FM, Daryanavard SM, Abdel-Rehim A, Bassyouni F, Abdel-Rehim M. Recent molecularly imprinted polymers applications in bioanalysis. CHEMICAL PAPERS 2023; 77:619-655. [PMID: 36213319 PMCID: PMC9524737 DOI: 10.1007/s11696-022-02488-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 09/10/2022] [Indexed: 11/18/2022]
Abstract
Molecular imprinted polymers (MIPs) as extraordinary compounds with unique features have presented a wide range of applications and benefits to researchers. In particular when used as a sorbent in sample preparation methods for the analysis of biological samples and complex matrices. Its application in the extraction of medicinal species has attracted much attention and a growing interest. This review focus on articles and research that deals with the application of MIPs in the analysis of components such as biomarkers, drugs, hormones, blockers and inhibitors, especially in biological matrices. The studies based on MIP applications in bioanalysis and the deployment of MIPs in high-throughput settings and optimization of extraction methods are presented. A review of more than 200 articles and research works clearly shows that the superiority of MIP techniques lies in high accuracy, reproducibility, sensitivity, speed and cost effectiveness which make them suitable for clinical usage. Furthermore, this review present MIP-based extraction techniques and MIP-biosensors which are categorized on their classes based on common properties of target components. Extraction methods, studied sample matrices, target analytes, analytical techniques and their results for each study are described. Investigations indicate satisfactory results using MIP-based bioanalysis. According to the increasing number of studies on method development over the last decade, the use of MIPs in bioanalysis is growing and will further expand the scope of MIP applications for less studied samples and analytes.
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Affiliation(s)
- Foad Mashayekhi Suzaei
- Toxicology Laboratories, Monitoring the Human Hygiene Condition & Standard of Qeshm (MHCS Company), Qeshm Island, Iran
| | - Seyed Mosayeb Daryanavard
- grid.444744.30000 0004 0382 4371Department of Chemistry, Faculty of Science, University of Hormozgan, Bandar-Abbas, Iran
| | - Abbi Abdel-Rehim
- grid.5335.00000000121885934Department of Chemical Engineering and Biotechnology, Cambridge University, Cambridge, UK
| | - Fatma Bassyouni
- grid.419725.c0000 0001 2151 8157Chemistry of Natural and Microbial Products Department, Pharmaceutical industry Research Division, National Research Centre, Cairo, 12622 Egypt
| | - Mohamed Abdel-Rehim
- grid.5037.10000000121581746Functional Materials Division, Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, Stockholm, Sweden and Med. Solutions, Stockholm, Sweden
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Development of a Chemically Modified Electrode with Magnetic Molecularly Imprinted Polymer (MagMIP) for 17-β-Estradiol Determination in Water Samples. ELECTROCHEM 2022. [DOI: 10.3390/electrochem3040053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The present work consisted of the development of an electrode based on carbon paste modified with magnetic molecularly imprinted polymer (CPE-MagMIP) for 17-β-estradiol (E2) detection. The incorporation of magnetic material (MagMIP) improved sensor performance, an increase of over 317%. The proposed method resulted in a linear response range from 0.5 to 14.0 μM, and the detection limit (LOD) and quantification limit (LOQ) were equal to 0.13 and 0.44 μM, respectively. Under optimized conditions, the developed sensor obtained satisfactory parameters in E2 determination in water samples, demonstrating selectivity, accuracy, and precision, making it a promising method for monitoring E2 in environmental samples.
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He C, Ma J, Xu H, Ge C, Lian Z. Selective capture and determination of doxycycline in marine sediments by using magnetic imprinting dispersive solid-phase extraction coupled with high performance liquid chromatography. MARINE POLLUTION BULLETIN 2022; 184:114215. [PMID: 36307947 DOI: 10.1016/j.marpolbul.2022.114215] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/30/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
Antibiotics are frequently used in aquaculture as feed additives and finally enter the marine environment that can pose potential threat to humans. In this study, magnetic molecularly imprinted nanocomposites were prepared by surface imprinting and applied as selective sorbents for specific capture of doxycycline. A multivariate approach based on response surface methodology with Box-Behnken design was adopted to optimize the dispersive solid-phase extraction of doxycycline from marine sediment. Three key parameters, including adsorbent amount and type of washing/eluting solvent, were screened. Under optimum conditions, the limit of detection was 0.03 μg g-1 with good linearity from 0.5 to 20 μg g-1 followed by HPLC detection. Finally, two sediment samples were analysed and satisfactory recoveries between 90.60 % and 93.76 % were obtained with acceptable relative standard deviations (≤4.12 %), suggesting a promising applicability of the developed method for efficient extraction and sensitive quantification of antibiotics in complex marine environmental matrix.
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Affiliation(s)
- Cheng He
- Marine College, Shandong University, Weihai 264209, China
| | - Jiaxin Ma
- Marine College, Shandong University, Weihai 264209, China
| | - Huan Xu
- Marine College, Shandong University, Weihai 264209, China
| | - Changzi Ge
- Marine College, Shandong University, Weihai 264209, China
| | - Ziru Lian
- Marine College, Shandong University, Weihai 264209, China.
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Sun M, Bu Y, Xin X, Feng J. Polyurethane functionalized silica aerogel for in-tube solid-phase microextraction of estrogens prior to high performance liquid chromatography detection. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang S, Ange KU, Ali N, Yang Y, Khan A, Ali F, Sajid M, Tian CT, Bilal M. Analytical perspective and environmental remediation potentials of magnetic composite nanosorbents. CHEMOSPHERE 2022; 304:135312. [PMID: 35709848 DOI: 10.1016/j.chemosphere.2022.135312] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/02/2022] [Accepted: 06/09/2022] [Indexed: 06/15/2023]
Abstract
The synthesis and application of magnetic nanosorbents to remove emerging pollutants have been considered the best environmental remediation and sustainability option. Incorporating magnetism shortens the treatment time and allows the sorbent to be recovered quickly using external magnetic with many cycles. The implementation of magnetic solid-phase extraction (MSPE) using magnetic materials of different shapes, sizes, and surface morphology can be a valuable tool in applying materials to prepare analytical samples. In MSPE applications, materials with strong magnetic domain can be used as precursors for constructing magnetic composite as a promising sorbent. This article focuses on the most recent and exceptional applications of magnetic adsorbents for preconcentration and removal purposes. Magnetic adsorbents, such as nanoparticles (NPs), foam, sponges, nanocomposites, hydrogels, and beads with multifunctional attributes have been comprehensively studied in terms of preparation procedures, limitations, advantages, and interactions between pollutants and magnetic composites. The role of magnetic sorbents in sample preparation methods, such as simple solid-phase extraction and microextraction, as well as sorptive extraction using a stir bar, was also examined. The use of magnetic adsorbents with analytical techniques, such as solid-phase extraction and solid-phase microextraction improves the method for preparing samples concerning the influential role of magnetic adsorbents. Towards the end, promising features and future outlook are also directed.
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Affiliation(s)
- Shizhong Zhang
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an, 223003, China.
| | - Kunda Umuhoza Ange
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an, 223003, China
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an, 223003, China.
| | - Yong Yang
- Key Laboratory of Regional Resource Exploitation and Medicinal Research, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an, Jiangsu Province, PR China
| | - Adnan Khan
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
| | - Farman Ali
- Department of Chemistry, Hazara University, KPK, Mansehra, 21300, Pakistan
| | - Muhammad Sajid
- Faculty of Materials and Chemical Engineering, Yibin University, Yibin, 644000, Sichuan, China
| | - Chen Tian Tian
- Key Laboratory of Regional Resource Exploitation and Medicinal Research, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an, Jiangsu Province, PR China
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China.
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Molecularly-Imprinted SERS: A Potential Method for Bioanalysis. Sci Pharm 2022. [DOI: 10.3390/scipharm90030054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The most challenging step in developing bioanalytical methods is finding the best sample preparation method. The matrix interference effect of biological sample become a reason of that. Molecularly imprinted SERS become a potential analytical method to be developed to answer this challenge. In this article, we review recent progress in MIP SERS application particularly in bioanalysis. Begin with the explanation about molecular imprinting technique and component, SERS principle, the combination of MIP SERS, and follow by various application of MIP SERS for analysis. Finally, the conclusion and future perspective were also discussed.
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Experimental and theoretical studies of a magnetic mesoporous molecularly imprinted polymer for selective adsorption of estrogens from aqueous solutions. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lopes D, Morés L, da Silva M, Schneider M, Merib J, Carasek E. Determination of hormones in urine by hollow fiber microporous membrane liquid-liquid extraction associated with 96-well plate system and HPLC-FLD detection. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1207:123406. [PMID: 35944416 DOI: 10.1016/j.jchromb.2022.123406] [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: 05/13/2022] [Revised: 07/11/2022] [Accepted: 08/01/2022] [Indexed: 10/16/2022]
Abstract
In this work, hollow-fiber microporous membrane liquid-liquid extraction (HF-MMLLE) was associated with a 96-well plate system for the determination of estrone, 17-β-estradiol, estriol and 17-α-ethinylestradiol in urine samples. This method exhibited some advantages, such as low cost, easy application, high-throughput and environmentally-friendly aspects. The type of organic solvent to fill the membrane, ionic strength effect, sample dilution, extraction and desorption time, and desorption solvent were examined. After the optimizations, the conditions were comprised of 45 min of extraction, 1-octanol as organic solvent and 15% (w/v) of NaCl; methanol was used as desorption solvent, and the desorption time was fixed at 10 min. The dilution of the sample increased the sensitivity due to the reduction of matrix effects; thus, urine samples were diluted 40-fold. The limits of detection ranged from 0.03 μg L-1 for 17-β-estradiol to 15 μg L-1 for estrone, and the limits of quantification ranged from 0.1 μg L-1 for 17-β-estradiol to 10 μg L-1 for estrone. The intra-day precision varied from 1.0% for estriol to 13.3% for 17-α-ethinylestradiol, and inter-day precision varied from 7.3% for estrone to 18.1% for estriol. The relative recoveries varied from 82 to 118%.
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Affiliation(s)
- Daniela Lopes
- Departamento de Química, Universidade Federal de Santa Catarina, SC 88040-900, Brazil
| | - Lucas Morés
- Departamento de Química, Universidade Federal de Santa Catarina, SC 88040-900, Brazil
| | - Mayara da Silva
- Departamento de Química, Universidade Federal de Santa Catarina, SC 88040-900, Brazil
| | - Mauana Schneider
- Departamento de Química, Universidade Federal de Santa Catarina, SC 88040-900, Brazil
| | - Josias Merib
- Departamento de Farmacociências, Universidade Federal de Ciências da Saúde de Porto Alegre, RS 90050-170, Brazil
| | - Eduardo Carasek
- Departamento de Química, Universidade Federal de Santa Catarina, SC 88040-900, Brazil.
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Restricted access mesoporous magnetic polypyrrole for extraction of acid, neutral and basic compounds from whey. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Wang H, Huang C, Ma S, Bo C, Ou J, Gong B. Recent advances of restricted access molecularly imprinted materials and their applications in food and biological samples analysis. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Borges MMC, Pires BC, Vieira SS, Borges KB, Guimarães LGDL. Magnetic and pH responsive composite hydrogel-based on poly(2-(diethylamino)ethyl methacrylate)/chitosan for fipronil removal from aqueous medium. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.105050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Lopes KL, de Oliveira HL, Serpa JAS, Torres JA, Nogueira FGE, de Freitas VAA, Borges KB, Silva MC. Nanomagnets based on activated carbon/magnetite nanocomposite for determination of endocrine disruptors in environmental water samples. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106366] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Ye H, Shao J, Shi Y, Tan S, Su K, Zhang L, Shan X. Magnetic molecularly imprinted polymers for extraction of S-phenylmercapturic acid from urine samples followed by high-performance liquid chromatography. J Mol Recognit 2021; 34:e2930. [PMID: 34432338 DOI: 10.1002/jmr.2930] [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: 05/12/2021] [Revised: 11/13/2020] [Accepted: 07/31/2021] [Indexed: 11/11/2022]
Abstract
In this study, magnetic molecularly imprinted polymers (MMIPs) were prepared and used as sorbents for extraction of S-phenylmercapturic acid (S-PMA) from urine samples, followed by high-performance liquid chromatography ultraviolet-visible (HPLC-UV/Vis) analysis. The MMIPs were synthesized by the copolymerization reaction of (phenylthio) acetic acid (template molecule), methacrylic acid (functional monomers) and ethylene glycol dimethacrylate (cross-linkers). The morphology, structure property and surface groups of the prepared MMIPs were characterized by scan electron microscopy, transmission electron microscopy, infrared spectroscopy, X-ray diffraction pattern, thermogravimetric analyses, Brunauer-Emmett-Teller and vibrating sample magnetometer. The selectivity of the MMIPs was investigated in the presence of interferents. Various parameters affecting the S-PMA extraction efficiency were investigated, including MMIPs amount, pH, sample volume, desorption solvent, as well as extraction and desorption time. The obtained optimal parameters were as follows: MMIPs amount (20 mg), pH (3.0), sample volume (5 mL), desorption solvent (methanol/acetic acid [9/1, v/v]), extraction time (30 minutes) and desorption time (2 minutes). The method was validated according to the Food and Drug Administration Guidance for Industry on Bioanalytical Method Validation. The calibration curve for the analyte was linear in the concentration range of 0.030-1.0 mg/L (r = 0.9995). The LOD and LOQ of the method were 0.0080 and 0.0267 mg/L, respectively. The enrichment factor of the MMIPs was 5. The relative standard deviations of intra- and inter-day tests were in the range of 3.8-5.1% and 3.9-6.3%, respectively. The recoveries at three different concentrations of 0.10, 0.50 and 0.80 mg/L ranged between 95.2% and 98.6%. In addition, the MMIPs could be reused for at least eight times. The proposed method was successfully applied to the determination of S-PMA in urine samples. In addition, this developed method could be used as a tool in the early screening and clinical diagnosis of benzene intoxication.
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Affiliation(s)
- Haipeng Ye
- Laboratory of Health testing, Hangzhou Occupational Disease Prevention and Control Hospital, Wenhui Street, Hangzhou, China
| | - Ji Shao
- Laboratory of Health testing, Hangzhou Occupational Disease Prevention and Control Hospital, Wenhui Street, Hangzhou, China
| | - Yanpeng Shi
- Laboratory of Health testing, Hangzhou Occupational Disease Prevention and Control Hospital, Wenhui Street, Hangzhou, China
| | - Siwei Tan
- Laboratory of Health testing, Hangzhou Occupational Disease Prevention and Control Hospital, Wenhui Street, Hangzhou, China
| | - Kewen Su
- Laboratory of Health testing, Hangzhou Occupational Disease Prevention and Control Hospital, Wenhui Street, Hangzhou, China
| | - Ling Zhang
- Laboratory of Health testing, Hangzhou Occupational Disease Prevention and Control Hospital, Wenhui Street, Hangzhou, China
| | - Xiaoyue Shan
- Laboratory of Health testing, Hangzhou Occupational Disease Prevention and Control Hospital, Wenhui Street, Hangzhou, China
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16
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Faraji M, Shirani M, Rashidi-Nodeh H. The recent advances in magnetic sorbents and their applications. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116302] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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17
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Recent Advances in Solid-Phase Extraction (SPE) Based on Molecularly Imprinted Polymers (MIPs) for Analysis of Hormones. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9070151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Steroid hormones are active substances that are necessary in the normal functioning of all physiological activities in the body, such as sexual characteristics, metabolism, and mood control. They are also widely used as exogenous chemicals in medical and pharmaceutical applications as treatments and at times growth promoters in animal farming. The vast application of steroid hormones has resulted in them being found in different matrices, such as food, environmental, and biological samples. The presence of hormones in such matrices means that they can easily come into contact with humans and animals as exogenous compounds, resulting in abnormal concentrations that can lead to endocrine disruption. This makes their determination in different matrices a vital part of pollutant management and control. Although advances in analytical instruments are constant, it has been determined that these instruments still require some sample preparation steps to be able to determine the occurrence of pollutants in the complex matrices in which they occur. Advances are still being made in sample preparation to ensure easier, selective, and sensitive analysis of complex matrices. Molecularly imprinted polymers (MIPs) have been termed as advanced solid-phase (SPE) materials for the selective extraction and preconcentration of hormones in complex matrices. This review explores the preparation and application of MIPs for the determination of steroid hormones in different sample types.
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Bhogal S, Mohiuddin I, Kaur K, Lee J, Brown RJC, Malik AK, Kim KH. Dual-template magnetic molecularly imprinted polymer-based sorbent for simultaneous and selective detection of phenolic endocrine disrupting compounds in foodstuffs. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 275:116613. [PMID: 33609857 DOI: 10.1016/j.envpol.2021.116613] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/23/2021] [Accepted: 01/25/2021] [Indexed: 06/12/2023]
Abstract
In this research, an efficient (94.9-99.4%) and fast (5 min) method has been developed and validated for simultaneous identification and quantification of phenolic endocrine disrupting compounds with an emphasis on bisphenol A (BPA) and 4-cumylphenol (4-CP) in food stuffs using a dual-template magnetic, molecularly-imprinted polymer (dt-MMIP). The dt-MMIP was synthesized by a sol-gel method using Fe3O4@SiO2 (as the core) and BPA and 4-CP (as templates). The dt-MMIP was coupled with magnetic solid phase extraction to simultaneously detect BPA and 4-CP in food samples. BPA was measured from bottled water and fruit juice samples samples at 0.36 and 0.24 ng mL-1, respectively, while 4-CP in those samples was 0.33 and 0.16 ng mL-1, respectively. Their detection limits were estimated as 0.04 and 0.05 ng mL-1, respectively. The developed dt-MMIP method was highly reproducible, while maintaining a good cyclability up to 20 cycles.
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Affiliation(s)
- Shikha Bhogal
- Department of Chemistry, Punjabi University, Patiala, 147002, Punjab, India
| | - Irshad Mohiuddin
- Department of Chemistry, Punjabi University, Patiala, 147002, Punjab, India
| | - Kuldeep Kaur
- Department of Chemistry, Mata Gujri College, Fatehgarh Sahib, 140407, India
| | - Jechan Lee
- Department of Environmental and Safety Engineering, Ajou University, Suwon, 16499, Republic of Korea; Department of Energy Systems Research, Ajou University, Suwon, 16499, Republic of Korea
| | - Richard J C Brown
- Environment Department, National Physical Laboratory, Teddington, TW11 0LW, United Kingdom
| | - Ashok Kumar Malik
- Department of Chemistry, Punjabi University, Patiala, 147002, Punjab, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
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Terephthalic acid-based magnetic molecularly imprinted polymer for enantioselective capillary electrophoresis determination of atenolol in human plasma. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118257] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Yilmaz E, Sarp G, Uzcan F, Ozalp O, Soylak M. Application of magnetic nanomaterials in bioanalysis. Talanta 2021; 229:122285. [PMID: 33838779 DOI: 10.1016/j.talanta.2021.122285] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/04/2021] [Accepted: 02/26/2021] [Indexed: 12/21/2022]
Abstract
The importance of magnetic nanomaterials and magnetic hybrid materials, which are classified as new generation materials, in analytical applications is increasingly understood, and research on the adaptation of these materials to analytical methods has gained momentum. Development of sample preparation techniques and sensor systems using magnetic nanomaterials for the analysis of inorganic, organic and biomolecules in biological samples, which are among the samples that analytical chemists work on most, are among the priority issues. Therefore in this review, we focused on the use of magnetic nanomaterials for the bioanalytical applications including inorganic and organic species and biomolecules in different biological samples such as primarily blood, serum, plasma, tissue extracts, urine and milk. We summarized recent progresses, prevailing techniques, applied formats, and future trends in sample preparation-analysis methods and sensors based on magnetic nanomaterials (Mag-NMs). First, we provided a brief introduction of magnetic nanomaterials, especially their magnetic properties that can be utilized for bioanalytical applications. Second, we discussed the synthesis of these Mag-NMs. Third, we reviewed recent advances in bioanalytical applications of the Mag-NMs in different formats. Finally, recently literature studies on the relevance of Mag-NMs for bioanalysis applications were presented.
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Affiliation(s)
- Erkan Yilmaz
- Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey; Technology Research and Application Center (TAUM), Erciyes University, Kayseri, Turkey; ERNAM-Nanotechnology Application and Research Center, Erciyes University, Kayseri, Turkey
| | - Gokhan Sarp
- Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey; Technology Research and Application Center (TAUM), Erciyes University, Kayseri, Turkey; ERNAM-Nanotechnology Application and Research Center, Erciyes University, Kayseri, Turkey
| | - Furkan Uzcan
- Technology Research and Application Center (TAUM), Erciyes University, Kayseri, Turkey; Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey
| | - Ozgur Ozalp
- Technology Research and Application Center (TAUM), Erciyes University, Kayseri, Turkey; Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey
| | - Mustafa Soylak
- Technology Research and Application Center (TAUM), Erciyes University, Kayseri, Turkey; Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey.
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21
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Restricted Access Molecularly Imprinted Polymers. Methods Mol Biol 2021; 2359:53-70. [PMID: 34410659 DOI: 10.1007/978-1-0716-1629-1_5] [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: 01/11/2023]
Abstract
The use of conventional molecularly imprinted polymers (MIPs) for biological sample preparation is a difficult procedure due to the presence of high concentrations of proteins which can obstruct the selective binding sites, decrease the adsorption capacity, and compromise the analytical validation. In this way, modifications of conventional MIPs have been carried out in order to give them the ability to exclude macromolecules. Superficial coverings with hydrophilic groups and/or proteins have been the main procedures to obtain these restricted access molecularly imprinted polymers (RAMIPs ). These materials have been efficiently used for the selective extraction of small molecules from untreated complex matrices (e.g., blood, plasma, serum, and milk), without the need of a pre-deproteinization step. In this chapter, we describe a generic synthesis protocol to obtain RAMIPs as well as the assays to evaluate the protein exclusion efficiency and possible applications in offline and online procedures.
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22
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Nano-sized FeO@SiO-molecular imprinted polymer as a sorbent for dispersive solid-phase microextraction of melatonin in the methanolic extract of , biological, and water samples. Talanta 2021; 221:121620. [DOI: 10.1016/j.talanta.2020.121620] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/29/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022]
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23
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Feng X, Li Y, Yang Y, Ma Y, Ji W, Sun Y, Chen T, Chen Y. Preparation of a ZIF-67-modified magnetic solid phase extraction material and its application in the detection of pyridine ring insecticides. NEW J CHEM 2021. [DOI: 10.1039/d1nj00703c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An advanced and reliable m-SPE material of a water-stable ZIF was developed for the determination of trace praziquantel and pymetrozine in spinach and broccoli.
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Affiliation(s)
- Xiangzhi Feng
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Yuanyuan Li
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Yuanyuan Yang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Yulong Ma
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Wenxin Ji
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Yonggang Sun
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Tong Chen
- Comprehensive Technology Centre
- Zhenjiang Customs District P. R. of China
- Zhenjiang
- China
| | - Yang Chen
- Shanghe New Materials Company
- Zhenjiang
- China
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24
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Gutiérrez-Serpa A, González-Martín R, Sajid M, Pino V. Greenness of magnetic nanomaterials in miniaturized extraction techniques: A review. Talanta 2020; 225:122053. [PMID: 33592775 DOI: 10.1016/j.talanta.2020.122053] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 12/20/2022]
Abstract
Green analytical chemistry principles should be followed, as much as possible, and particularly during the development of analytical sample preparation methods. In the past few years, outstanding materials such as ionic liquids, metal-organic frameworks, carbonaceous materials, molecularly imprinted materials, and many others, have been introduced in a wide variety of miniaturized techniques in order to reduce the amount of solvents and sorbents required during the analytical sample preparation step while pursuing more efficient extraction methods. Among them, magnetic nanomaterials (MNMs) have gained special attention due to their versatile properties. Mainly, their ability to be separated from the sample matrix using an external magnetic field (thus enormously simplifying the entire process) and their easy combination with other materials, which implies the inclusion of a countless number of different functionalities, highly specific in some cases. Therefore, MNMs can be used as sorbents or as magnetic support for other materials which do not have magnetic properties, the latter permiting their combination with novel materials. The greenness of these magnetic sorbents in miniaturized extractions techniques is generally demonstrated in terms of their ease of separation and amount of sorbent required, while the nature of the material itself is left unnoticed. However, the synthesis of MNMs is not always as green as their applications, and the resulting MNMs are not always as safe as desired. Is the analytical sample preparation field ready for using green magnetic nanomaterials? This review offers an overview, from a green analytical chemistry perspective, of the current state of the use of MNMs as sorbents in microextraction strategies, their preparation, and the analytical performance offered, together with a critical discussion on where efforts should go.
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Affiliation(s)
- Adrián Gutiérrez-Serpa
- Departamento de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL), La Laguna, Tenerife, 38206, Spain; Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL), La Laguna, Tenerife, 38206, Spain
| | - Raúl González-Martín
- Departamento de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL), La Laguna, Tenerife, 38206, Spain
| | - Muhammad Sajid
- Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Verónica Pino
- Departamento de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL), La Laguna, Tenerife, 38206, Spain; Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL), La Laguna, Tenerife, 38206, Spain.
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25
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Dinali LAF, de Oliveira HL, Teixeira LS, de Souza Borges W, Borges KB. Mesoporous molecularly imprinted polymer core@shell hybrid silica nanoparticles as adsorbent in microextraction by packed sorbent for multiresidue determination of pesticides in apple juice. Food Chem 2020; 345:128745. [PMID: 33302105 DOI: 10.1016/j.foodchem.2020.128745] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/19/2020] [Accepted: 11/25/2020] [Indexed: 12/13/2022]
Abstract
In this work, we report the synthesis of a mesoporous molecularly imprinted polymer on the surface of silica nanoparticles (core@mMIP) to be applied as adsorbent in microextraction by packed sorbent (MEPS) for selective determination of pesticides in apple juice. The core@mMIP was properly characterized, showing good adhesion of the polymer to the silica core. The best extraction conditions were: 200 µL of ultrapure water as washing solvent, 150 µL of acetonitrile as eluent, 100 µL of sample at pH 2.5, five draw-eject cycles and 8 mg of adsorbent. Thereby, recoveries of 96.12 ± 1.05%, 76.88 ± 6.18% and 76.18 ± 5.57% were obtained for pyriproxyfen (PPX), deltamethrin (DTM) and etofenprox (ETF), respectively. After validation, the method presented linearity in the range of 0.02-10 µg mL-1 (r > 0.99), limit of detection of 0.005 µg mL-1, satisfactory selectivity, and proper precision and accuracy. The method was successfully applied real samples of processed and fresh apple juice.
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Affiliation(s)
- Laíse Aparecida Fonseca Dinali
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei (UFSJ), Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160 São João del-Rei, Minas Gerais, Brazil
| | - Hanna Leijoto de Oliveira
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei (UFSJ), Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160 São João del-Rei, Minas Gerais, Brazil
| | - Leila Suleimara Teixeira
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei (UFSJ), Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160 São João del-Rei, Minas Gerais, Brazil
| | - Warley de Souza Borges
- Departamento de Ciências Exatas, Universidade Federal do Espírito Santo (UFES), 29075-910 Vitória, Espírito Santo, Brazil
| | - Keyller Bastos Borges
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei (UFSJ), Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160 São João del-Rei, Minas Gerais, Brazil.
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26
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Silva MS, Tavares APM, de Faria HD, Sales MGF, Figueiredo EC. Molecularly Imprinted Solid Phase Extraction Aiding the Analysis of Disease Biomarkers. Crit Rev Anal Chem 2020; 52:933-948. [DOI: 10.1080/10408347.2020.1843131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Matheus Siqueira Silva
- Laboratory of Toxicant and Drug Analyses, Federal University of Alfenas, Alfenas, Brazil
| | - Ana P. M. Tavares
- BioMark/ISEP, School of Engineering of the Polytechnic School of Porto, Porto, Portugal
- BioMark/UC, Department of Chemical Engineering, Faculty of Sciences and Technology of the University of Coimbra, Coimbra, Portugal
| | - Henrique Dipe de Faria
- Laboratory of Toxicant and Drug Analyses, Federal University of Alfenas, Alfenas, Brazil
| | - Maria Goreti Ferreira Sales
- BioMark/ISEP, School of Engineering of the Polytechnic School of Porto, Porto, Portugal
- BioMark/UC, Department of Chemical Engineering, Faculty of Sciences and Technology of the University of Coimbra, Coimbra, Portugal
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27
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Nunes da Silva D, Leijoto de Oliveira H, Borges KB, Pereira AC. Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer. ELECTROANAL 2020. [DOI: 10.1002/elan.202060223] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daniela Nunes da Silva
- Departamento de Ciências Naturais Universidade Federal de São João del-Rei (UFSJ) Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas 36301-160 São João del-Rei MG Brazil
| | - Hanna Leijoto de Oliveira
- Departamento de Ciências Naturais Universidade Federal de São João del-Rei (UFSJ) Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas 36301-160 São João del-Rei MG Brazil
| | - Keyller Bastos Borges
- Departamento de Ciências Naturais Universidade Federal de São João del-Rei (UFSJ) Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas 36301-160 São João del-Rei MG Brazil
| | - Arnaldo César Pereira
- Departamento de Ciências Naturais Universidade Federal de São João del-Rei (UFSJ) Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas 36301-160 São João del-Rei MG Brazil
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28
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Selective separation and purification of polydatin by molecularly imprinted polymers from the extract of Polygoni Cuspidati Rhizoma et Radix, rats' plasma and urine. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1156:122307. [PMID: 32835909 DOI: 10.1016/j.jchromb.2020.122307] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/29/2020] [Accepted: 08/04/2020] [Indexed: 12/19/2022]
Abstract
Molecularly imprinted polymers (MIPs) based on polydatin were prepared by precipitation polymerization method. Synthesis process of MIPs was optimized by discussion of functional monomers, porogens and the molar ratio of template- functional monomer-cross linker. Then, MIPs were prepared with polydatin as the template, 4-vinyl pyridine as the functional monomer, ethylene glycol dimethyl acrylate as the cross linker, acetonitrile as the porogen and the molar ratio of template-monomer-cross linker at 1:10:20. Scanning electron microscopy and Fourier transform infrared spectrometer were used to inspect macroscale and chemical bond of MIPs. Adsorption capability and selectivity of MIPs to polydatin were investigated by carrying out the static, dynamic and selective experiments. The results showed MIPs performed high adsorption ability and selectivity to polydatin, indicating MIPs could be used to separate and enrich polydatin from the complex systems. Finally, MIPs were applied as the adsorbent for isolation and purification of polydatin from the extract of Polygoni Cuspidati Rhizoma et Radix, rats' plasma and urine samples. MIPs were successfully used to separate polydatin from the Polygoni Cuspidati Rhizoma et Radix and recovery ranged from 89.2% to 91.6%. The maximum concentration of polydatin in rats' plasma and urine samples was 2.84 ± 0.0748 µg mL-1 and 2.64 ± 0.485 µg mL-1, respectively. Moreover, to compare with the MIPs method, organic solvent methods were used to analyze the polydatin in rats' plasma and urine samples. The results illustrated MIPs method was effective and selective for enrichment of polydatin from the medicinal plants and biological samples.
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29
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García-Valverde M, Soriano M, Lucena R, Cárdenas S. Cotton fibers functionalized with β-cyclodextrins as selectivity enhancer for the direct infusion mass spectrometric determination of cocaine and methamphetamine in saliva samples. Anal Chim Acta 2020; 1126:133-143. [DOI: 10.1016/j.aca.2020.05.070] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 05/27/2020] [Accepted: 05/29/2020] [Indexed: 12/18/2022]
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30
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Efficient development of a magnetic molecularly imprinted polymer for selective determination of trimethoprim and sulfamethoxazole in milk. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104648] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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31
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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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32
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Nascimento TA, Silva CF, Oliveira HLD, da Silva RCS, Nascimento CS, Borges KB. Magnetic molecularly imprinted conducting polymer for determination of praziquantel enantiomers in milk. Analyst 2020; 145:4245-4253. [DOI: 10.1039/d0an00703j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new selective adsorbent based on magnetic molecularly imprinted conducting polymer was firstly synthetized and applied to the magnetic solid phase extraction (MSPE) for the determination of PZQ enantiomers in milk samples.
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Affiliation(s)
| | - Camilla Fonseca Silva
- Departamento de Ciências Naturais
- Universidade Federal de São João del-Rei
- São João del-Rei
- Brazil
| | | | | | | | - Keyller Bastos Borges
- Departamento de Ciências Naturais
- Universidade Federal de São João del-Rei
- São João del-Rei
- Brazil
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