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Tan D, Wang Y, Fan H, Jin J, Sun X, Dhanjai, Wang D. Magnetic surface-imprinted polymer microspheres coupled with HPLC-MS/MS for sensitive detection of amphetamine-type drugs in water. J Chromatogr A 2024; 1730:465097. [PMID: 38889583 DOI: 10.1016/j.chroma.2024.465097] [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: 03/28/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 06/20/2024]
Abstract
Magnetic surface imprinted polymer microspheres (Fe3O4@MIPs) were successfully synthesized via Pickering emulsion polymerization, utilizing N-Methylphenethylamine as a surrogate template for amphetamine-type drugs. Fe3O4@MIPs not only possessed excellent dispersibility and enough magnetic properties in aqueous solutions, but also displayed good selectivity towards six amphetamines, with an imprinting factor ranging from 1.8 to 2.6. The adsorption kinetics closely aligned with the pseudo-second-order model, and the adsorption efficiency exceeds 80 % for each amphetamine at equilibrium. Fe3O4@MIPs were then employed as the efficient adsorbents for the extraction of amphetamine drugs. Extraction parameters, including sample pH, the mass of adsorbent, and the type and volume of eluting solvent, were carefully optimized. In combination with the high performance liquid chromatography tandem triple quadrupole mass spectrometry (HPLC-MS/MS), a selective magnetic solid-phase extraction (MISPE) method utilizing Fe3O4@MIPs was developed for the detection of six amphetamines in water samples. The limits of detection and limits of quantitation were determined to be 5.2∼23 ng L-1 and 17∼77 ng L-1, respectively. Recoveries for the six target drugs from lake water and sewage samples fell within the range of 87.2∼110 %. Additionally, the MISPE-HPLC-MS/MS method exhibited excellent repeatability, with a precision below 8.5 % at two spiking levels. The prepared Fe3O4@MIPs possessed the advantages of high selectivity, straightforward preparation, facile separation and good reusability, and was highly suitable for the efficient extraction of amphetamine-type substances in complex environmental water.
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Affiliation(s)
- Dongqin Tan
- College of Environmental Science and Engineering, Dalian Maritime University, No.1 Linghai Road, Dalian, 116026, China.
| | - Yue Wang
- College of Environmental Science and Engineering, Dalian Maritime University, No.1 Linghai Road, Dalian, 116026, China
| | - Haocheng Fan
- College of Environmental Science and Engineering, Dalian Maritime University, No.1 Linghai Road, Dalian, 116026, China
| | - Jing Jin
- Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Xiaoli Sun
- Department of Chemistry, Lishui University, Lishui, 32300, China
| | - Dhanjai
- Department of Chemistry, University of Allahabad, India
| | - Degao Wang
- College of Environmental Science and Engineering, Dalian Maritime University, No.1 Linghai Road, Dalian, 116026, China
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Effting LM, Urbano A, do Lago AC, de Figueiredo EC, Tarley CRT. Synthesis of novel oxytetracycline-molecularly imprinted polymer using a semi-covalent chemical imprinting approach for magnetic dispersive solid phase extraction of tetracyclines in water and milk samples. Food Chem 2024; 437:137854. [PMID: 37944389 DOI: 10.1016/j.foodchem.2023.137854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 10/10/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023]
Abstract
In the present study, a highly efficient analytical method based on preconcentration of tetracyclines (TCs) in water and milk samples using a magnetic molecularly imprinted polymer (Fe3O4/SiO2/MIP) synthesized by means of a novel semi-covalent synthesis for TCs and determination by HPLC-DAD was proposed. Fe3O4/SiO2/MIP showed specific superficial area of 216.0 m2/g, superior to Fe3O4/SiO2/NIP (non-imprinted material) (103.6 m2/g). Using the Fe3O4/SiO2/MIP, the magnetic dispersive solid phase extraction (MDSPE) for four TCs (chlortetracycline, doxycycline, oxytetracycline, and tetracycline) was based on the preconcentration of 40.0 mL of sample (pH 4.0) vortex-assisted with 10 mg of Fe3O4/SiO2/MIP during 60 s. The method presented a limit of detection (LOD) in the range 0.26-0.60 µg/L, and preconcentration factor in the range 52.3-87.4-fold for the TCs. The method was applied to determine TCs in samples of lake water and cow milk with recovery results ranging from 96.0 to 102.0 %.
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Affiliation(s)
- Letícia Maria Effting
- Laboratório de Desenvolvimento de Métodos Analíticos (LADEMA), Departamento de Química, Universidade Estadual de Londrina (UEL), 86057-970 Londrina, PR, Brazil
| | - Alexandre Urbano
- Departamento de Física, Universidade Estadual de Londrina (UEL), 86057-970 Londrina, PR, Brazil
| | - Ayla Campos do Lago
- Laboratório de Análises de Toxicantes e Fármacos, Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, 37130-000 Alfenas, MG, Brazil
| | - Eduardo Costa de Figueiredo
- Laboratório de Análises de Toxicantes e Fármacos, Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, 37130-000 Alfenas, MG, Brazil
| | - César Ricardo Teixeira Tarley
- Laboratório de Desenvolvimento de Métodos Analíticos (LADEMA), Departamento de Química, Universidade Estadual de Londrina (UEL), 86057-970 Londrina, PR, Brazil; Instituto Nacional de Ciência e Tecnologia de Bioanalítica - (INCTbio), Universidade Estadual de Campinas (UNICAMP), 13083-970 Campinas, SP, Brazil.
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Jara-Cornejo E, Peña-Bedón E, Torres Moya M, Espinoza-Torres S, Sotomayor MDPT, Picasso G, Tuesta JC, López R, Khan S. Electrochemical Analysis of Curcumin in Real Samples Using Intelligent Materials. Polymers (Basel) 2024; 16:366. [PMID: 38337251 DOI: 10.3390/polym16030366] [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: 12/21/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
Curcumin is a compound of great importance in the food industry due to its biological and pharmacological properties, which include being an antioxidant, anti-inflammatory, antibacterial, antiviral, and anticarcinogenic. This paper proposes the synthesis of an electrochemical sensor based on molecularly imprinted polymers (MIPs) and MWCNT by drop casting deposited on a glassy carbon electrode (GCE) for the selective quantification of curcumin in food samples. The synthesized compounds are characterized by Fourier transform infrared (IR), Brunauer-Emmett-Teller (BET), and electrochemical techniques such as cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The optimal conditions for further experiments were determined by selecting these parameters. We examined three food products, commercial capsules, turmeric rhizomes, and commercial turmeric powder, employing both electrochemical and HPLC methods for the analysis. The electrochemical method revealed a limit of detection (LOD) value of 0.1365 µmol L-1, compared with the HPLC analysis, which gave a value of 3.55 µmol L-1. Furthermore, the MIP material demonstrated superior selectivity for the analyte compared to potential interferents. The recovery percentage, determined using the HPLC method, fell within the range of 87.5% to 102.6.
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Affiliation(s)
- Eduardo Jara-Cornejo
- Technology of Materials for Environmental Remediation (TecMARA) Research Group, Faculty of Sciences, National University of Engineering, Lima 150128, Peru
| | - Erick Peña-Bedón
- Technology of Materials for Environmental Remediation (TecMARA) Research Group, Faculty of Sciences, National University of Engineering, Lima 150128, Peru
| | - Mahely Torres Moya
- Technology of Materials for Environmental Remediation (TecMARA) Research Group, Faculty of Sciences, National University of Engineering, Lima 150128, Peru
| | - Sergio Espinoza-Torres
- Technology of Materials for Environmental Remediation (TecMARA) Research Group, Faculty of Sciences, National University of Engineering, Lima 150128, Peru
| | - Maria D P T Sotomayor
- Institute of Chemistry, State University of São Paulo (UNESP), Araraquara 14801-970, SP, Brazil
- National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutantans Radioactives (INCT-DATREM), Araraquara 14801-970, SP, Brazil
| | - Gino Picasso
- Technology of Materials for Environmental Remediation (TecMARA) Research Group, Faculty of Sciences, National University of Engineering, Lima 150128, Peru
| | - Juan C Tuesta
- Laboratorio de Biotecnología, Universidad Nacional Autónoma de Alto Amazonas, Calle Prolongación Libertad 1220, Yurimaguas 16501, Peru
| | - Rosario López
- Technology of Materials for Environmental Remediation (TecMARA) Research Group, Faculty of Sciences, National University of Engineering, Lima 150128, Peru
| | - Sabir Khan
- Technology of Materials for Environmental Remediation (TecMARA) Research Group, Faculty of Sciences, National University of Engineering, Lima 150128, Peru
- Department of Natural Sciences, Mathematics, and Statistics, Federal Rural University of the Semi-Arid, Mossoro 59625-900, RN, Brazil
- Department of Exact Sciences and Technology, State University of Santa Cruz, Ilhéus 45662-900, BA, Brazil
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Nguyen VT, Giang HH, Tran TTN, Van TK, Tran T. Synthesis and Characteristics of Polymer-Mediated Curcumin Molecular Imprinting for Quantitative Determination of Curcumin in Food Samples. J Chromatogr A 2024; 1713:464567. [PMID: 38103474 DOI: 10.1016/j.chroma.2023.464567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/21/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
In this study, a molecularly imprinted polymer (MIP)-based extraction process for determining curcumin in food samples was carried out. MIP and NIP were thermally synthesized in acetonitrile solvent (porogen) using methacrylic acid as a functional monomer, ethylene glycol dimethacrylate as a cross-linking agent, azobisisobutyronitrile as an initiator, and curcumin as a template molecule. Parameters affecting the synthesis process, such as temperature, the ratio of the components in the reaction, and the extraction solvent, were investigated. The characteristics of the synthesized material were examined using infrared spectroscopy and scanning electron microscopy. The maximum adsorption capacity of the material was found to be 1.34 mg/g MIP with an adsorption efficiency of 89.96% for MIP and 12.35% for NIP. The MIP material exhibited high selectivity for curcumin compared to other compounds such as quercetin (18.00%), rutin (14.74%), and ketoconazole (0.00%). The analysis method for curcumin using the MIP material was performed with validated parameters including linear range (1 - 25 mg/L, r2 = 0.9997), accuracy (recovery rate of 90.90 %), precision (RSDR = 0.338 %, RSDr = 1.591 %), detection limit (0.051 mg/L), and quantification limit (0.156 mg/L). The validation results indicated that the HPLC-DAD method was entirely suitable for analyzing the curcumin content in food samples.
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Affiliation(s)
- Van-Trong Nguyen
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Vietnam.
| | - Hoang Huu Giang
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Vietnam
| | - T T Nha Tran
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Vietnam
| | - Thanh-Khue Van
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Vietnam
| | - ThanhThuy Tran
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Vietnam
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