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Kannouma RE, Hammad MA, Kamal AH, Mansour FR. Miniaturization of Liquid-Liquid extraction; the barriers and the enablers. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107863] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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2
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Ambaye TG, Vaccari M, Prasad S, Rtimi S. Recent progress and challenges on the removal of per- and poly-fluoroalkyl substances (PFAS) from contaminated soil and water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:58405-58428. [PMID: 35754080 DOI: 10.1007/s11356-022-21513-2] [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: 04/01/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Currently, due to an increase in urbanization and industrialization around the world, a large volume of per- and poly-fluoroalkyl substances (PFAS) containing materials such as aqueous film-forming foam (AFFF), protective coatings, landfill leachates, and wastewater are produced. Most of the polluted wastewaters are left untreated and discharged into the environment, which causes high environmental risks, a threat to human beings, and hampered socioeconomic growth. Developing sustainable alternatives for removing PFAS from contaminated soil and water has attracted more attention from policymakers and scientists worldwide under various conditions. This paper reviews the recent emerging technologies for the degradation or sorption of PFAS to treat contaminated soil and water. It highlights the mechanisms involved in removing these persistent contaminants at a molecular level. Recent advances in developing nanostructured and advanced reduction remediation materials, challenges, and perspectives in the future are also discussed. Among the variety of nanomaterials, modified nano-sized iron oxides are the best sorbents materials due to their specific surface area and photogenerated holes and appear extremely promising in the remediation of PFAS from contaminated soil and water.
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Affiliation(s)
- Teklit Gebregiorgis Ambaye
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze 43, 25123, Brescia, Italy
| | - Mentore Vaccari
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze 43, 25123, Brescia, Italy
| | - Shiv Prasad
- Division of Environment Science, ICAR-Indian Agricultural Research Institute New Delhi, New Delhi, 110012, India
| | - Sami Rtimi
- Global Institute for Water, Environment and Health, CH-1201, Geneva, Switzerland.
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3
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Development of an Efficient Solid-Phase Microextraction Monolithic Column for the Analysis of Estrogens in Human Urine and Serum Samples. Chromatographia 2022. [DOI: 10.1007/s10337-022-04178-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Olasupo A, Suah FBM. Trends in hollow fibre liquid phase microextraction for the preconcentration of pharmaceutically active compounds in aqueous solution: A case for polymer inclusion membrane. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128573. [PMID: 35278960 DOI: 10.1016/j.jhazmat.2022.128573] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/06/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Low concentrations of pharmaceutically active compounds have been reported in samples from highly complex aqueous environments. Due to their low concentrations, efficient sample pretreatment methods are needed to clean samples and concentrate the compounds of interest prior to instrumental analysis. Hollow fibre liquid-phase microextraction (HF-LPME) is an effective alternative to conventional techniques such as liquid-liquid extraction (LLE) and solid phase extraction (SPE) because it consumes less organic solvent and is less labour intensive with a short extraction time. HF-LPME involves the preconcentration and mass transfer of target analytes from an aqueous sample into an acceptor solution in the lumen of the fibre using a supported liquid membrane (SLM) impregnated in the hollow fibre pores. However, despite the high contaminant selectivity, reproducibility, and enrichment that HF-LPME offers, this technique is limited by membrane instability. Although several advances have been made to address membrane instability, they are either too costly or not feasible for industrial application. Hence, hollow fibre polymer inclusion membrane liquid-phase microextraction (HF-PIM-LPME) was introduced to ameliorate membrane instability. This new approach uses ionic liquids (ILs) as a green solvent, and has demonstrated high membrane stability, good contaminant enrichment, and similar selectivity and reproducibility to HF-SLM-LPME. Hence, this review aims to raise awareness of HF-PIM-LPME as a viable alternative for the selectivity and preconcentration of pharmaceuticals and other contaminants in aquatic environments.
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Affiliation(s)
- Ayo Olasupo
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia
| | - Faiz Bukhari Mohd Suah
- Green Analytical Chemistry Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia.
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5
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Fattahi N, Shamsipur M, Nematifar Z, Babajani N, Moradi M, Soltani S, Akbari S. Novel deep eutectic solvent-based liquid phase microextraction for the extraction of estrogenic compounds from environmental samples. RSC Adv 2022; 12:14467-14476. [PMID: 35702212 PMCID: PMC9105635 DOI: 10.1039/d2ra01754g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/08/2022] [Indexed: 12/07/2022] Open
Abstract
Steroid hormones, such as estrone (E1), 17β-estradiol (E2), 17β-ethinylestradiol (EE2) and estriol (E3) are a group of lipophilic active substances, synthesized biologically from cholesterol or chemically. A pH-switchable hydrophobic deep eutectic solvent-based liquid phase microextraction (DES-LPME) technique was established and combined with gas chromatography-mass spectroscopy for the determination of estrogenic compounds in environmental water and wastewater samples. A DES was synthesized using l-menthol as HBA and (1S)-(+)-camphor-10-sulfonic acid (CSA) as HBD, and used as a green extraction solvent. By adjusting the pH of the solution, the unique behavior of the DES in the phase transition and extraction of the desired analytes was investigated. The homogenization process of the mixture is done only by manual shaking in less than 30 seconds and the phase separation is done only by changing the pH and without centrifugation. Some effective parameters on the extraction and derivatization, such as molar ratio of DES components, DES volume, KOH concentration, HCl volume, salt addition, extraction and derivatization time and derivatization prior or after extraction were studied and optimized. Under the optimum conditions, relative standard deviation (RSD) values for intra-day and inter-day of the method based on 7 replicate measurements of 20 ng L−1 of estrogenic compounds and 10 ng L−1 for internal standard in different samples were in the range of 2.2–4.6% and 3.9–5.7%, respectively. The calibration graphs were linear in the range of 0.5–100 ng L−1 and the limits of detection (LODs) were in the range of 0.2–1.0 ng L−1. The relative recoveries of environmental water and wastewater samples which have been spiked with different levels of target compounds were 91.0–108.8%. A pH-switchable hydrophobic deep eutectic solvent-based liquid phase microextraction (DES-LPME) technique was established and combined with gas chromatography–mass spectroscopy for the determination of estrogenic compounds in environmental samples.![]()
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Affiliation(s)
- Nazir Fattahi
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mojtaba Shamsipur
- Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran
| | - Ziba Nematifar
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Nasrin Babajani
- Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran
| | - Masoud Moradi
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shahin Soltani
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shahram Akbari
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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6
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Goh SXL, Goh EXY, Lee HK. Sodium dodecyl sulfate-multi-walled carbon nanotubes-coated-membrane solid phase extraction of glucocorticoids in aqueous matrices. Talanta 2021; 221:121624. [PMID: 33076152 DOI: 10.1016/j.talanta.2020.121624] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 12/17/2022]
Abstract
A membrane-based solid phase extraction (SPE)-ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method was developed for the determination of nine glucocorticoids in water. This new hybrid SPE approach involved the deposition of sodium dodecyl sulfate (SDS)-multi-walled carbon nanotubes (MWCNTs) on a piece of polypropylene membrane that served as the extraction device. Hitherto, such a sample preparation procedure has not been applied to the analysis of water contaminants before. The use of the surfactant helped to disperse the MWCNTs effectively so that they were coated uniformly onto the polypropylene membrane. This increased the overall extraction efficiency of the procedure. Characterisation of the SDS-MWCNTs material was performed using transmission electron microscopy and scanning electron microscopy. The membrane device did not require a pre-conditioning step. The most favourable extraction parameters such as type of surfactant, percentage of surfactant, type of desorption solvent, stirring rate, desorption time, extraction time, temperature, salting-out effect, pH and diameter of MWCNTs were obtained. The method showed linearity ranges from 0.2 to 100 ng mL-1 for hydrocortisone, dexamethasone, cortisone acetate and beclomethasone dipropionate, and 0.5-100 ng mL-1 for the rest of the analytes. Limits of detection ranging from 0.019 to 0.098 ng mL-1, and limits of quantification ranging from 0.065 to 0.326 ng mL-1, were obtained for the analytes. The intra-day repeatability was between 1.77 and 3.56% while the inter-day reproducibility was between 2.69 and 9.53%, respectively. The method was used to analyse glucocorticoids as contaminants in the canal water samples.
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Affiliation(s)
- Shalene Xue Lin Goh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore; NUS Environmental Research Institute, National University of Singapore, T-Lab Building #02-01, 5A Engineering Drive 1, Singapore, 117411, Singapore
| | - Esther Xue Yi Goh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Hian Kee Lee
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore; NUS Environmental Research Institute, National University of Singapore, T-Lab Building #02-01, 5A Engineering Drive 1, Singapore, 117411, Singapore.
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7
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Pena-Pereira F, Bendicho C, Pavlović DM, Martín-Esteban A, Díaz-Álvarez M, Pan Y, Cooper J, Yang Z, Safarik I, Pospiskova K, Segundo MA, Psillakis E. Miniaturized analytical methods for determination of environmental contaminants of emerging concern - A review. Anal Chim Acta 2020; 1158:238108. [PMID: 33863416 DOI: 10.1016/j.aca.2020.11.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 01/09/2023]
Abstract
The determination of contaminants of emerging concern (CECs) in environmental samples has become a challenging and critical issue. The present work focuses on miniaturized analytical strategies reported in the literature for the determination of CECs. The first part of the review provides brief overview of CECs whose monitoring in environmental samples is of particular significance, namely personal care products, pharmaceuticals, endocrine disruptors, UV-filters, newly registered pesticides, illicit drugs, disinfection by-products, surfactants, high technology rare earth elements, and engineered nanomaterials. Besides, an overview of downsized sample preparation approaches reported in the literature for the determination of CECs in environmental samples is provided. Particularly, analytical methodologies involving microextraction approaches used for the enrichment of CECs are discussed. Both solid phase- and liquid phase-based microextraction techniques are highlighted devoting special attention to recently reported approaches. Special emphasis is placed on newly developed materials used for extraction purposes in microextraction techniques. In addition, recent contributions involving miniaturized analytical flow techniques for the determination of CECs are discussed. Besides, the strengths, weaknesses, opportunities and threats of point of need and portable devices have been identified and critically compared with chromatographic methods coupled to mass chromatography. Finally, challenging aspects regarding miniaturized analytical methods for determination of CECs are critically discussed.
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Affiliation(s)
- Francisco Pena-Pereira
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e Alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain.
| | - Carlos Bendicho
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e Alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain.
| | - Dragana Mutavdžić Pavlović
- Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev Trg 19, Zagreb, 10000, Croatia
| | - Antonio Martín-Esteban
- Departamento de Medio Ambiente y Agronomía, INIA, Carretera de A Coruña Km 7.5, Madrid, E-28040, Spain
| | - Myriam Díaz-Álvarez
- Departamento de Medio Ambiente y Agronomía, INIA, Carretera de A Coruña Km 7.5, Madrid, E-28040, Spain
| | - Yuwei Pan
- Cranfield Water Science Institute, Cranfield University, Cranfield, MK43 0AL, United Kingdom; School of Engineering, University of Glasgow, G12 8LT, United Kingdom
| | - Jon Cooper
- School of Engineering, University of Glasgow, G12 8LT, United Kingdom
| | - Zhugen Yang
- Cranfield Water Science Institute, Cranfield University, Cranfield, MK43 0AL, United Kingdom
| | - Ivo Safarik
- Department of Nanobiotechnology, Biology Centre, ISB, CAS, Na Sadkach 7, 370 05, Ceske Budejovice, Czech Republic; Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic; Department of Magnetism, Institute of Experimental Physics, SAS, Watsonova 47, 040 01, Kosice, Slovakia
| | - Kristyna Pospiskova
- Department of Nanobiotechnology, Biology Centre, ISB, CAS, Na Sadkach 7, 370 05, Ceske Budejovice, Czech Republic; Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic
| | - Marcela A Segundo
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, R Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Elefteria Psillakis
- Laboratory of Aquatic Chemistry, School of Environmental Engineering, Polytechnioupolis, Technical University of Crete, GR-73100, Chania, Crete, Greece
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8
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Rodriguez KL, Hwang JH, Esfahani AR, Sadmani AHMA, Lee WH. Recent Developments of PFAS-Detecting Sensors and Future Direction: A Review. MICROMACHINES 2020; 11:E667. [PMID: 32650577 PMCID: PMC7407801 DOI: 10.3390/mi11070667] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/06/2020] [Accepted: 07/06/2020] [Indexed: 01/01/2023]
Abstract
Per- and poly-fluoroalkyl substances (PFASs) have recently been labeled as toxic constituents that exist in many aqueous environments. However, traditional methods used to determine the level of PFASs are often not appropriate for continuous environmental monitoring and management. Based on the current state of research, PFAS-detecting sensors have surfaced as a promising method of determination. These sensors are an innovative solution with characteristics that allow for in situ, low-cost, and easy-to-use capabilities. This paper presents a comprehensive review of the recent developments in PFAS-detecting sensors, and why the literature on determination methods has shifted in this direction compared to the traditional methods used. PFAS-detecting sensors discussed herein are primarily categorized in terms of the detection mechanism used. The topics covered also include the current limitations, as well as insight on the future direction of PFAS analyses. This paper is expected to be useful for the smart sensing technology development of PFAS detection methods and the associated environmental management best practices in smart cities of the future.
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Affiliation(s)
| | | | | | | | - Woo Hyoung Lee
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, FL 32816, USA; (K.L.R.); (J.-H.H.); (A.R.E.); (A.H.M.A.S.)
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9
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Jing X, He J, Zhao W, Huang X, Wang X. Effervescent tablet-assisted switchable hydrophilicity solvent-based microextraction with solidification of floating organic droplets for HPLC determination of phenolic endocrine disrupting chemicals in bottled beverages. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104680] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Nakagami K, Monobe T, Sumiya O, Takashima K, Ueta I, Saito Y. Braid configuration designed for fiber-packed capillary in microscale sample preparation. J Chromatogr A 2020; 1613:460694. [DOI: 10.1016/j.chroma.2019.460694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 11/07/2019] [Accepted: 11/07/2019] [Indexed: 11/30/2022]
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11
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Davoodi R, Nodehi RN, Rastkari N, Zinatizadeh AA, Mahvi AH, Fattahi N. Solid-phase extraction followed by deep eutectic solvent based dispersive liquid–liquid microextraction and GC-MS detection of the estrogenic compounds in wastewater samples. NEW J CHEM 2020. [DOI: 10.1039/d0nj00911c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
SPE combined with deep eutectic solvent based dispersive liquid–liquid microextraction has been developed as a sensitive technique for the ultra preconcentration of estrogenic compounds in wastewater samples prior to their analysis by GC-MS.
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Affiliation(s)
- Reza Davoodi
- Department of Environmental Health Engineering
- School of Public Health
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Ramin Nabizadeh Nodehi
- Department of Environmental Health Engineering
- School of Public Health
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Noushin Rastkari
- Center for Air Pollution Research (CAPR)
- Institute for Environmental Research (IER)
- Tehran University of Medical Sciences
- Tehran
- Iran
| | | | - Amir Hossein Mahvi
- Department of Environmental Health Engineering
- School of Public Health
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Nazir Fattahi
- Research Center for Environmental Determinants of Health (RCEDH)
- Kermanshah University of Medical Sciences
- Kermanshah
- Iran
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12
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Otoukesh M, Nerín C, Aznar M, Kabir A, Furton KG, Es'haghi Z. Determination of adhesive acrylates in recycled polyethylene terephthalate by fabric phase sorptive extraction coupled to ultra performance liquid chromatography - mass spectrometry. J Chromatogr A 2019; 1602:56-63. [PMID: 31155144 DOI: 10.1016/j.chroma.2019.05.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 12/24/2022]
Abstract
This article presents fabric phase sorptive extraction (FPSE) as a simple and effective pre-concentration method for the enrichment of acrylate compounds in different food simulants and subsequent analysis of the extracts by ultra-high-performance liquid chromatography with mass spectrometric detection (UPLC-MS). Acrylate compounds come from acrylic adhesives used commonly for sticking the paper labels on polyethylene terephthalate (PET) bottles and therefore, they may exist in recycled polyethylene terephthalate (rPET). Four acrylates were studied: ethylene glycol dimethacrylate (EGDM), pentaerythritol triacrylate (PETA), triethylene glycol diacrylate (TEGDA) and trimethylolpropane triacrylate (TMPTA). Five different types of FPSE media coated with different sol-gel sorbents were studied and finally sol-gel polyethylene glycol- polypropylene glycol-polyethylene glycol triblock copolymer (PEG-PPG-PEG) coated FPSE media was chosen for its satisfactory results. The optimal conditions affecting the extraction efficiency of compounds were determined in three different food simulants. Statistical evaluation of this method reveals good linearity and precision. Under the optimized conditions, the method provided limits of detection of the compounds in the range of (0.1-1.9 ng g-1, 0.1-1.2 ng g-1, 0.2-2.3 ng g-1) in EtOH 10%, HAc 3% and EtOH 20% and the enrichment factor values (EFs) after applying N2 were in the range of 11.1-25.0, 13.8-26.3, 8.3-21.9, in simulants A, B and C respectively. The optimized method was applied successfully to analyze thirteen types of recycled PET samples. Acrylates were found in some of the samples at ng g-1 levels.
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Affiliation(s)
- Mahdiyeh Otoukesh
- Analytical Chemistry Department, GUIA Group, I3A, EINA, University of Zaragoza, Made Luna 3, 50018, Zaragoza, Spain; Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Iran
| | - Cristina Nerín
- Analytical Chemistry Department, GUIA Group, I3A, EINA, University of Zaragoza, Made Luna 3, 50018, Zaragoza, Spain.
| | - Margarita Aznar
- Analytical Chemistry Department, GUIA Group, I3A, EINA, University of Zaragoza, Made Luna 3, 50018, Zaragoza, Spain
| | - Abuzar Kabir
- International Forensic Research Institute, Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, FL, 33199, USA
| | - Kenneth G Furton
- International Forensic Research Institute, Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8th Street, Miami, FL, 33199, USA
| | - Zarrin Es'haghi
- Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Iran
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13
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Tan SC, Lee HK. A metal-organic framework of type MIL-101(Cr) for emulsification-assisted micro-solid-phase extraction prior to UHPLC-MS/MS analysis of polar estrogens. Mikrochim Acta 2019; 186:165. [DOI: 10.1007/s00604-019-3289-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 01/29/2019] [Indexed: 01/20/2023]
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14
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Magnetic covalent organic frameworks based on magnetic solid phase extraction for determination of six steroidal and phenolic endocrine disrupting chemicals in food samples. Microchem J 2018. [DOI: 10.1016/j.microc.2018.08.036] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Hexafluoroisopropanol-alkyl carboxylic acid high-density supramolecular solvent based dispersive liquid-liquid microextraction of steroid sex hormones in human urine. J Chromatogr A 2018; 1580:12-21. [DOI: 10.1016/j.chroma.2018.10.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/01/2018] [Accepted: 10/20/2018] [Indexed: 12/11/2022]
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16
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17
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Goh SXL, Lee HK. Automated bundled hollow fiber array-liquid-phase microextraction with liquid chromatography tandem mass spectrometric analysis of perfluorinated compounds in aqueous media. Anal Chim Acta 2018; 1019:74-83. [DOI: 10.1016/j.aca.2018.03.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 02/07/2018] [Accepted: 03/07/2018] [Indexed: 12/26/2022]
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18
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González JL, Pell A, López-Mesas M, Valiente M. Hollow fibre supported liquid membrane extraction for BTEX metabolites analysis in human teeth as biomarkers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 630:323-330. [PMID: 29482140 DOI: 10.1016/j.scitotenv.2018.02.195] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/06/2018] [Accepted: 02/16/2018] [Indexed: 06/08/2023]
Abstract
The use of human teeth as biomarkers has been previously applied to characterize environmental exposure mainly to metal contamination. Difficulties arise when the contaminants are volatile or its concentration level is very low. This study presents the development of a methodology based on the transport through hollow fibre membrane liquid-phase microextraction (HF-LPME), followed by HPLC-UV measurement, to determine three different metabolites of BTEX contaminants, mandelic acid (MA), hyppuric acid (HA), and methylhippuric acid (4mHA). The driving force for the liquid membrane has been studied by using both non-facilitated (pH gradient 2-12) and facilitated transport (ionic and non-ionic carriers). Enrichment factors of several hundreds were accomplished. Different ionic and non-ionic water insoluble compounds were used as metabolite carriers for the facilitated transport at HF-LPME. Three organic solvents were used to constitute the liquid membrane, dodecane, dihexyl ether and n-decanol. Other parameters affecting the extraction process, such as extraction time, stirring speed, acceptor buffer and salt content were optimised in spiked solutions and selected those that presented the best enrichment factors for all analytes. Final conditions were established for donor solution as 20mL, pH2 of 0.5M NaCl, the OLM (Organic Liquid Membrane) as n-decanol and the acceptor solution as 40μL of 1M NaOH. The selected extraction time was 20h with stirring speed of 500rpm. Validation of the optimised method included the determination of individual linearity range (MA: 0.002-5.7μg; HA: 0.01-7.9μg; 4mHA 0.002-5.3μg), limits of detection (MA: 1.6ng; HA: 0.2ng; 4mHA 0.2ng), repeatability (RSD 7-10%) and reproducibility (5-8%). The developed method was applied to the analysis of MA, HA and 4mHA in teeth samples of 8 workers exposed to BTEX.
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Affiliation(s)
- Johannes Luis González
- Centre Grup de Tècniques de Separació en Química (GTS), Química Analítica, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Albert Pell
- Centre Grup de Tècniques de Separació en Química (GTS), Química Analítica, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Montserrat López-Mesas
- Centre Grup de Tècniques de Separació en Química (GTS), Química Analítica, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Manuel Valiente
- Centre Grup de Tècniques de Separació en Química (GTS), Química Analítica, Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
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Zare F, Razmi M. Ultrasound-assisted low-density-solvent-based solvent-demulsified dispersive liquid-liquid microextraction for the quantification of amino acids in biological samples. SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201700032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fahimeh Zare
- Young Researchers and Elite Club, Marvdasht Branch; Islamic Azad University; Marvdasht Iran
| | - Mahdi Razmi
- Young Researchers and Elite Club, Marvdasht Branch; Islamic Azad University; Marvdasht Iran
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