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Kurashov Y, Pochivalov A, Petrova A, Safonova E, Garmonov S, Bulatov A. Supramolecular solvents based on hydrophobic natural deep eutectic solvents and primary amines for preconcentration and determination of enrofloxacin in milk. Talanta 2024; 279:126666. [PMID: 39116727 DOI: 10.1016/j.talanta.2024.126666] [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: 06/12/2024] [Revised: 07/31/2024] [Accepted: 08/02/2024] [Indexed: 08/10/2024]
Abstract
In this work, coacervation in primary amines solutions with hydrophobic natural deep eutectic solvents based on terpenoids and carboxylic acids was demonstrated for the first time. A liquid-phase microextraction approach was developed based on supramolecular solvent formation with primary amine acting as amphiphile and hydrophobic deep eutectic solvent making up mixed vesicles and serving as coacervation agent. Such supramolecular solvents could be used to separate wide range of substances from different aqueous media, such as food products, biological liquids and wastewaters. It is important that both hydrophobic and ionic interactions with supramolecular aggregates take place ensuring synergetic effect and better extraction ability, which is significant in separating relatively polar analytes. Different primary amines and deep eutectic solvents were investigated for liquid-phase microextraction of proof-of-concept amphoteric analyte (enrofloxacin, widely used veterinary fluoroquinolone antibiotic) and its determination by high-performance liquid chromatography with fluorescence detection using Shimadzu LC-20 Prominence chromatograph and RF-20A fluorescence detector. It was found that the supramolecular solvent based on 1-nonylamine, formed after addition of a deep eutectic solvent based on menthol and hexanoic acid (molar ratio of 1:1), provided maximum extraction recovery (85 %) and maximum enrichment factor (34). To characterize the extraction system, the composition of the phases was investigated, and cryo-transmission electron microscopy images were obtained. Vesicular aggregates were observed in the supramolecular solvent. The extraction mechanism was proposed in terms of formation of mixed aggregates to capture the analyte. Limit of detection was found to be 7 μg kg-1, while linear range of 20-250 μg kg-1 was established. Relative standard deviation values were lower than 7 %. Relative bias did not exceed 12 %.
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Affiliation(s)
- Yaroslav Kurashov
- Department of Analytical Chemistry, Certification and Quality Management, National Research Technological University, 68 Karl Marx Street, Kazan, 420015, Russia; Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia.
| | - Aleksei Pochivalov
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia
| | - Anna Petrova
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia
| | - Evgenia Safonova
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia
| | - Sergey Garmonov
- Department of Analytical Chemistry, Certification and Quality Management, National Research Technological University, 68 Karl Marx Street, Kazan, 420015, Russia
| | - Andrey Bulatov
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St. Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia
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Pochivalov A, Fedorova A, Yakimova N, Safonova E, Bulatov A. Primary amine citrate-based supramolecular designer solvent: Preconcentration of ochratoxin A for determination in foods by liquid chromatography. Anal Chim Acta 2024; 1285:341991. [PMID: 38057045 DOI: 10.1016/j.aca.2023.341991] [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: 07/26/2023] [Revised: 10/26/2023] [Accepted: 10/31/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND Supramolecular solvents are nanostructured liquids that are separated from colloidal solutions of amphiphilic compounds as a result of self-assembly of amphiphiles and coacervation under changing conditions. They are considered to be designer solvents as their properties can be tailored to a specific analytical task by controlling the conditions of their formation (amphiphile, coacervation inducer, medium, concentration of components). The discovery of new extraction systems based on supramolecular solvents and their application to relevant analytical tasks are of great importance for the advancement of environmentally-friendly sample preparation. RESULTS A novel green liquid-phase microextraction approach involving in situ formation of 1-octylamine citrate followed by preconcentration of ochratoxin A from aqueous extract of food sample in supramolecular solvent droplets was developed. The extraction system was carefully characterized. The density of the solvent allowed it to be to retrieved from the extraction system by its solidification. The alkaline nature of the obtained extract allowed the use of acetic acid for its dissolution instead of more toxic organic solvents followed by high-performance liquid chromatography with fluorometric detection. An excellent extraction recovery of 99 % and a satisfactory enrichment factor of 8.3 were achieved. The limit of detection was 0.5 μg kg-1, while the calibration plot was linear over the range of 1.5-50 μg kg-1. Cereal and roasted coffee bean samples were successfully analyzed with a relative bias less than 20 %. SIGNIFICANCE In the present work, a phenomenon of supramolecular solvent formation based on primary amine citrate was presented for the first time. Tetrabutylammonium bromide was investigated as a coacervation agent in an extraction system, and possible interactions responsible for its ability to induce phase separation in a micellar solution of primary amine citrate were described. The critical micelle concentration of 1-octylamine citrate in aqueous solution of tetrabutylammonium bromide was firstly determined.
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Affiliation(s)
- Aleksei Pochivalov
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St, Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia.
| | - Anastasia Fedorova
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St, Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia
| | - Nina Yakimova
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St, Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia
| | - Evgenia Safonova
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St, Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia
| | - Andrey Bulatov
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University St, Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia
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Zhavoronok MF, Vakh C, Bulatov A. Automated primary amine-based supramolecular solvent microextraction with monoterpenoid as coacervation agent before high-performance liquid chromatography. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2022.105085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Pekkaya S, Yıldız E, Çabuk H. New di-(2-Ethylhexyl)Phosphoric Acid-Based Supramolecular Solvent (DEHPA-SUPRAS) Microextraction Coupled to High Performance Liquid Chromatography (HPLC) for the Determination of Organophosphorus Pesticides in Tea Drinks. ANAL LETT 2023. [DOI: 10.1080/00032719.2023.2167086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Semra Pekkaya
- Faculty of Sciences, Department of Chemistry, Zonguldak Bülent Ecevit University, Zonguldak, Turkey
| | - Elif Yıldız
- Faculty of Sciences, Department of Chemistry, Zonguldak Bülent Ecevit University, Zonguldak, Turkey
| | - Hasan Çabuk
- Faculty of Sciences, Department of Chemistry, Zonguldak Bülent Ecevit University, Zonguldak, Turkey
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Vortex-assisted sequential liquid-phase micro-extraction of E127 and E129 in foodstuffs and pharmaceuticals. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Kachangoon R, Vichapong J, Santaladchaiyakit Y, Burakham R, Srijaranai S. Sample Preparation Approach by In Situ Formation of Supramolecular Solvent Microextraction for Enrichment of Neonicotinoid Insecticide Residues. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-022-02417-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Vakh C, Kasper S, Kovalchuk Y, Safonova E, Bulatov A. Alkyl polyglucoside-based supramolecular solvent formation in liquid-phase microextraction. Anal Chim Acta 2022; 1228:340304. [DOI: 10.1016/j.aca.2022.340304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 07/19/2022] [Accepted: 08/20/2022] [Indexed: 11/17/2022]
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Bogdanova P, Vakh C, Bulatov A. A surfactant-mediated microextraction of synthetic dyes from solid-phase food samples into the primary amine-based supramolecular solvent. Food Chem 2022; 380:131812. [PMID: 34996637 DOI: 10.1016/j.foodchem.2021.131812] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 12/02/2021] [Accepted: 12/04/2021] [Indexed: 01/03/2023]
Abstract
An effective and simple surfactant-mediated microextraction of synthetic dyes from solid-phase food samples into the primary amine-based supramolecular solvents is presented for the first time. The developed procedure involved two stages: (i) an isolation of dyes from a solid-phase food sample into a micellar solution of the primary amine; (ii) a preconcentration of the extracted dyes into the supramolecular solvent phase generated from the obtained micellar solution under a coacervation process. The microextraction procedure was applied for the determination of synthetic dyes in confectionery, dried fruits, and spices samples. The supramolecular solvent formed from aqueous micelle aggregates of 1-octylamine due to coacervation induced by thymol provided maximum extraction recovery values for synthetic dyes. In the proposed two-stage extraction procedure the micellar solution of primary amine was a media for analytes isolation from solid-phase and their followed preconcentration.
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Affiliation(s)
- Polina Bogdanova
- Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya nab., St., Petersburg 199034, Russia
| | - Christina Vakh
- Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya nab., St., Petersburg 199034, Russia.
| | - Andrey Bulatov
- Institute of Chemistry, Saint-Petersburg University, St.Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya nab., St., Petersburg 199034, Russia
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9
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Musarurwa H, Tavengwa NT. Stimuli-responsive polymers and their applications in separation science. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105282] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Xie ZS, Xing RR, Chen X, Hu S, Bai XH. Simultaneous preconcentration of both polar and non-polar Q-markers of flavonoids in traditional Chinese medicine by reverse micellar floating solidification liquid-phase microextraction. J LIQ CHROMATOGR R T 2022. [DOI: 10.1080/10826076.2022.2026784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Zhong-shui Xie
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Rong-rong Xing
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Xuan Chen
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Shuang Hu
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Xiao-hong Bai
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
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Abdallah IA, Hammad SF, Bedair A, Mansour FR. Menthol-assisted homogenous liquid-liquid microextraction for HPLC/UV determination of favipiravir as an antiviral for COVID-19 in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1189:123087. [PMID: 34974319 PMCID: PMC8715635 DOI: 10.1016/j.jchromb.2021.123087] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/01/2021] [Accepted: 12/17/2021] [Indexed: 12/31/2022]
Abstract
Favipiravir is a promising antiviral agent that has been recently approved for treatment of COVID-19 infection. In this study, a menthol-assisted homogenous liquid–liquid microextraction method has been developed for favipiravir determination in human plasma using HPLC/UV. The different factors that could affect the extraction efficiency were studied, including extractant type, extractant volume, menthol amount and vortex time. The optimum extraction efficiency was achieved using 300 µL of tetrahydrofuran, 30 mg of menthol and vortexing for 1 min before centrifuging the sample for 5 min at 3467g. Addition of menthol does not only induce phase separation, but also helps to form reverse micelles to facilitate extraction. The highly polar favipiravir molecules would be incorporated into the hydrophilic core of the formed reverse micelle to be extracted by the non-polar organic extractant. The method was validated according to the FDA bioanalytical method guidelines. The developed method was found linear in the concentration range of 0.1 to 100 µg/mL with a coefficient of determination of 0.9992. The method accuracy and precision were studied by calculating the recovery (%) and the relative standard deviation (%), respectively. The recovery (%) was in the range of 97.1–103.9%, while the RSD (%) values ranged between 2.03 and 8.15 %. The developed method was successfully applied in a bioequivalence study of Flupirava® 200 mg versus Avigan® 200 mg, after a single oral dose of favipiravir administered to healthy adult volunteers. The proposed method was simple, cheap, more eco-friendly and sufficiently sensitive for biomedical application.
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Affiliation(s)
- Inas A Abdallah
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32958, Egypt.
| | - Sherin F Hammad
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31111, Egypt
| | - Alaa Bedair
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32958, Egypt
| | - Fotouh R Mansour
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31111, Egypt; Pharmaceutical Services Center, Faculty of Pharmacy, Tanta University, Tanta 31111, Egypt.
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12
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Jiménez-Skrzypek G, Ortega-Zamora C, González-Sálamo J, Hernández-Borges J. Miniaturized green sample preparation approaches for pharmaceutical analysis. J Pharm Biomed Anal 2022; 207:114405. [PMID: 34653744 DOI: 10.1016/j.jpba.2021.114405] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 12/27/2022]
Abstract
The development of green sample preparation procedures is an extremely important research field in which more and more applications are constantly being proposed in different areas, including pharmaceutical analysis. This review article is aimed at providing a general overview of the development of miniaturized green analytical sample preparation procedures in the pharmaceutical analysis field, with special focus on the works published between January 2017 and July 2021. Particular attention has been paid to the application of environmentally friendly solvents and sorbents as well as nanomaterials or high extraction capacity sorbents in which the solvent volumes and reagents amounts are drastically reduced, with their subsequent advantages from the sustainability point of view.
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Affiliation(s)
- Gabriel Jiménez-Skrzypek
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL), Avda. Astrofísico Fco. Sánchez, s/n, 38206 San Cristóbal de La Laguna, España
| | - Cecilia Ortega-Zamora
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL), Avda. Astrofísico Fco. Sánchez, s/n, 38206 San Cristóbal de La Laguna, España
| | - Javier González-Sálamo
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL), Avda. Astrofísico Fco. Sánchez, s/n, 38206 San Cristóbal de La Laguna, España; Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL), Avda. Astrofísico Fco. Sánchez, s/n, 38206 San Cristóbal de La Laguna, España.
| | - Javier Hernández-Borges
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL), Avda. Astrofísico Fco. Sánchez, s/n, 38206 San Cristóbal de La Laguna, España; Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL), Avda. Astrofísico Fco. Sánchez, s/n, 38206 San Cristóbal de La Laguna, España.
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13
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Dowlatshah S, Santigosa E, Saraji M, Payán MR. A selective and efficient microfluidic method-based liquid phase microextraction for the determination of sulfonamides in urine samples. J Chromatogr A 2021; 1652:462344. [PMID: 34186325 DOI: 10.1016/j.chroma.2021.462344] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022]
Abstract
Liquid phase microextraction (LPME) into a microfluidic has undergone great advances focused on downscaled and miniaturized devices. In this work, a microfluidic device was developed for the extraction of sulfonamides in order to accelerate the mass transfer and passive diffusion of the analytes from the donor phase to the acceptor phase. The subsequent analysis was carried out by high performance liquid chromatography with UV-DAD (HPLC-DAD). Several parameters affecting the extraction efficiency of the method such as the supported liquid membrane, composition of donor and acceptor phase and flow rate were investigated and optimized. Tributyl phosphate was found to be a good supported liquid membrane which confers not only great affinity for analytes but also long-term stability, allowing more than 20 consecutive extractions without carry over effect. Under optimum conditions, extraction efficiencies were over 96 % for all sulfonamides after 10 minutes extraction and only 10 µL of sample was required. Relative standard deviation was between 3-5 % for all compounds. Method detection limits were 45, 57, 54 and 33 ng mL-1 for sulfadiazine (SDI), sulfamerazine (SMR), sulfamethazine (SMT) and sulfamethoxazole (SMX), respectively. Quantitation limits were 0.15, 0.19, 0.18 and 0.11 µg mL-1 for SDI, SMR, SMT SMX, respectively. The proposed microfluidic device was successfully applied for the determination of sulfonamides in urine samples with extraction efficiencies within the range of 86-106 %. The proposed method improves the procedures proposed to date for the determination of sulfonamides in terms of efficiency, reduction of the sample volume and extraction time.
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Affiliation(s)
- Samira Dowlatshah
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Prof. García González s/n, 41012, Seville, Spain; Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Elia Santigosa
- Department of Analytical Chemistry, Universitat Autónoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Mohammad Saraji
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - María Ramos Payán
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Prof. García González s/n, 41012, Seville, Spain.
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Xiao Y, Deng J, Fang L, Tu L, Luan T. Mapping the distribution of perfluoroalkyl substances in zebrafishes by liquid extraction surface analysis mass spectrometry. Talanta 2021; 231:122377. [PMID: 33965041 DOI: 10.1016/j.talanta.2021.122377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/24/2021] [Accepted: 03/27/2021] [Indexed: 10/21/2022]
Abstract
Investigation on the distribution of persistent organic pollutants (POPs) in aquatic organisms is of great importance for exploring the biological toxicity and health risks of environmental pollutants. In this study, a liquid extraction surface analysis mass spectrometry (LESA-MS) method was developed for rapid and in situ analysis of the spatial distribution of perfluoroalkyl substances (PFASs) in zebrafish. By combining the high-precision automated moving platform of LESA device and the high-resolution MS, quantitative analysis of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) in zebrafish tissue section were easily achieved. A tissue-specific ionization efficiency factor (TSF) strategy was also proposed to correct the matrix effect in different parts of zebrafish tissue. By using the developed method, high sensitive and efficient imaging of PFOA and PFOS in zebrafish tissue was achieved, and the distributions of PFOA and PFOS in descending order were gills, organs, roes, pelvic fin, muscle, and brain. The experimental results demonstrated that the coupling of LESA-MS method with TFS strategy is an efficient and reliable approach for monitoring the content distribution of environmental pollutants in biological tissues.
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Affiliation(s)
- Yipo Xiao
- State Key Laboratory of Biocontrol, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou, 510275, China
| | - Jiewei Deng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, 100 Waihuanxi Road, Guangzhou, 510006, China.
| | - Ling Fang
- State Key Laboratory of Biocontrol, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou, 510275, China
| | - Lanyin Tu
- State Key Laboratory of Biocontrol, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou, 510275, China
| | - Tiangang Luan
- State Key Laboratory of Biocontrol, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou, 510275, China; Institute of Environmental and Ecological Engineering, Guangdong University of Technology, 100 Waihuanxi Road, Guangzhou, 510006, China.
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Timofeeva I, Stepanova K, Bulatov A. In-a-syringe surfactant-assisted dispersive liquid-liquid microextraction of polycyclic aromatic hydrocarbons in supramolecular solvent from tea infusion. Talanta 2021; 224:121888. [PMID: 33379097 DOI: 10.1016/j.talanta.2020.121888] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/06/2020] [Accepted: 11/08/2020] [Indexed: 12/13/2022]
Abstract
In this work, an automated surfactant-assisted dispersive liquid-liquid microextraction approach based on in-a-syringe concept was developed for the first time. The procedure assumed mixing aqueous sample phase and hydrophilic emulsion containing hexanoic acid and sodium hexanoate in a syringe of flow system. Sodium hexanoate acted as an emulsifier in dispersive liquid-liquid microextraction process and it was required for the formation of supramolecular solvent phase. After spontaneous separation of phases in the syringe, the upper supramolecular solvent phase containing target analytes was withdrawn and analyzed. The procedure was applied to the determination of 13 polycyclic aromatic hydrocarbons in tea infusion by high performance liquid chromatography with fluorescence detection. It was shown that the supramolecular solvent provided effective extraction of polycyclic aromatic hydrocarbons and fast phase separation in the syringe without centrifugation. The enrichment factors were in the range of 38-46. The automated microextraction procedure lasted 4 min including syringe cleaning. Under optimal experimental conditions the linear detection ranges were found to be 0.05-50.00 μg L-1 with limits of detection calculated from a blank test, based on 3σ, 0.02-0.04 μg L-1. Recovery values in the range of 85-105% were achieved for tea infusion with a reproducibility expressed as RSD less than 4.1%.
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Affiliation(s)
- Irina Timofeeva
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St. Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia.
| | - Kira Stepanova
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St. Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia
| | - Andrey Bulatov
- Department of Analytical Chemistry, Institute of Chemistry, Saint-Petersburg University, St. Petersburg State University, SPbSU, SPbU, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia
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Sustainable green solvents for microextraction techniques: Recent developments and applications. J Chromatogr A 2021; 1640:461944. [PMID: 33556679 DOI: 10.1016/j.chroma.2021.461944] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/21/2021] [Accepted: 01/24/2021] [Indexed: 01/20/2023]
Abstract
The development and application of alternative green solvents in analytical techniques consist of trends in sample preparation, since this subject represents an important step toward sustainability in experimental procedures. This review is focused on the main theoretical aspects related to deep eutectic solvents (DES), switchable hydrophilicity solvents (SHS) and supramolecular solvents (SUPRAS). Recent applications are highlighted, particularly for the extraction of different analytes from environmental, biological and food matrices. Moreover, novel configurations are emphasized, aiming for efficient, automated and high-throughput procedures. This review also provides some critical points regarding the use of these solvents and their green aspects.
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Insights into coacervative and dispersive liquid-phase microextraction strategies with hydrophilic media – A review. Anal Chim Acta 2021; 1143:225-249. [DOI: 10.1016/j.aca.2020.08.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 12/18/2022]
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