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Han M, Du K, He X, Li H, Li J, Li X, Chang Y. Advancing green extraction of bioactive compounds using deep eutectic solvent-based ultrasound-assisted matrix solid-phase dispersion: Application to UHPLC-PAD analysis of alkaloids and organic acids in Coptidis rhizoma. Talanta 2024; 274:125983. [PMID: 38537350 DOI: 10.1016/j.talanta.2024.125983] [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: 12/19/2023] [Revised: 03/18/2024] [Accepted: 03/21/2024] [Indexed: 05/04/2024]
Abstract
The utilization of deep eutectic solvents (DES) in sustainable extracting and separating of phytochemicals shows promising prospect. An exceptionally fast, eco-friendly, and sustainable approach was proposed for extracting bioactive compounds from Coptidis Rhizoma based on deep eutectic solvent-based ultrasound-assisted matrix solid phase dispersion (DES-UA-MSPD). Single-factor experiments and Box-Behnken design were utilized to explore the optimal extraction conditions. The analysis indicated that the acidic DES, especially betaine-acrylic acid (Bet-Aa 1:4 mol/mol) with 50% water content, was proved to be the most effective medium for the extraction of alkaloids (magnoflorine, groenlandicine, coptisine, epiberberine, berberine and palmatine) and organic acid (chlorogenic acid). With the parameters optimized, the total maximum extraction yield of alkaloids and organic acids reached 128.83 mg g-1 applying the optimal DES, which was 1.33-5.33 folds higher than conventional extraction solvents. Additionally, through microstructure analysis using scanning electron microscopy, density functional theory , and frontier molecular orbitals theory, a deeper understanding of the extraction principle was gained, and the molecular mechanism of DES synthesis and the interactions between target compounds were systematically elucidated. The sustainable and green potential of the DES-UA-MSPD method was demonstrated through Green Analytical Procedure Indexanalysis. The overall results of this investigation revealed that the proposed technology was a highly promising and sustainable alternative for effective extraction and quantification of natural products.
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Affiliation(s)
- Min Han
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Kunze Du
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xicheng He
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Haixiang Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Jin Li
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xiaoxia Li
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Yanxu Chang
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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2
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Jin P, Zhu F, Zhou W, Liu C, Li N, Liu H. Developing magnetic functionalized dendritic fibrous mesoporous silica as advanced adsorbent for quaternary ammonium alkaloids. Mikrochim Acta 2023; 190:481. [PMID: 37999777 DOI: 10.1007/s00604-023-06053-x] [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: 08/14/2023] [Accepted: 10/17/2023] [Indexed: 11/25/2023]
Abstract
A novel π-conjugated polymer-modified magnetic dendritic fibrous mesoporous silica adsorbent (MB@KCC-1@π-CP) is reported for the accurate determination of quaternary ammonium alkaloids (QAAs) in complex body fluid matrices. It is demonstrated that the magnetic dendritic fibrous mesoporous silica (MB@KCC-1) is an excellent carrier combining magnetism, high specific surface area, unique hierarchical pore structure, and fast mass transfer rate. The π-conjugated polymer (π-CP) can efficiently retain QAAs (berberine, coptisine, palmatine, jatrorrhizine) by multiple interactions. In addition, the adsorption kinetics and adsorption mechanism were also studied and discussed. Under optimized extraction conditions, MB@KCC-1@π-CP-based magnetic solid-phase extraction (MSPE) and high-performance liquid chromatography (HPLC) method affords a wide linear range (0.5-20000 ng mL-1), low limits of detection (0.2-2 ng mL-1), and satisfactory relative standard deviations (RSD) of inter-day (< 2.4%) and intra-day (< 3.1%) for QAAs. Trace QAAs in complex human blood plasma samples were successfully detected by the established method.
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Affiliation(s)
- Pian Jin
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Fucheng Zhu
- The Third Affiliated Hospital of Shandong First Medical University, Shandong First Medical University, Jinan, Shandong, 250117, China
| | - Wen Zhou
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Chen Liu
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Na Li
- Qilu University of Technology (Shandong Academy of Science), Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instrument of Shandong Province, Jinan, Shandong, 250014, China
| | - Houmei Liu
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China.
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3
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Alam SD, Beg MA, Bagadi M, Locatelli M, ALOthman ZA, Mustaqeem M, Ali I. Facile extraction of berberine from different plants, separation, and identification by thin-layer chromatography, high-performance liquid chromatography, and biological evaluation against Leishmaniosis. J Sep Sci 2023; 46:e2300582. [PMID: 37675810 DOI: 10.1002/jssc.202300582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 08/23/2023] [Accepted: 08/29/2023] [Indexed: 09/08/2023]
Abstract
The extraction of berberine was carried out from Berberis vulgaris, Berberis aquifolium, and Hydrastis canadensis plants using ethanol and water (70:30, v/v). The extracted berberine was characterized by ultraviolet-visible and Fourier-transform infrared spectroscopy. The purity of berberine was ascertained by thin-layer chromatography using n-propanol-formic acid-water (95:1:4) and (90:1:9) solvents. hRf values were in the range of 44-49 with compact spots (diameter 0.2-0.4 cm). HPLC was carried out using ammonium acetate buffer and acetonitrile in gradient mode with Zodiac (4.6 × 150 mm, 3 μm) column. The flow rate was 1.0 mL/min and detection was at 220 nm. The values of separation and resolution factors of the standard and the extracted berberine were in the range of 1.13-1.16 and 1.40-1.71, respectively. A comparison has shown that both thin-layer chromatography and high-performance liquid chromatography (HPLC) methods found applications in different situations and requirements. The extracted berberine samples were used to treat Leishmaniosis and the results showed better activity of berberine in comparison to the standard drug Amphotericin B. Briefly, the reported research is a novel and may be used to extract berberine from plants, separation and identification of berberine by thin layer chromatography and HPLC and to treat Leishmaniosis.
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Affiliation(s)
| | - Mirza Adil Beg
- Department of Molecular Medicine, Jamia Hamdard, New Delhi, India
| | | | - Marcello Locatelli
- Department of Pharmacy, Analytical and Bioanalytical Chemistry, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Zeid A ALOthman
- Department of Chemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Mohd Mustaqeem
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Imran Ali
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
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4
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Liu X, Wang P, Hu K, Li L, Yang C, Chen Z, Zeng H, Zhang Z. Dispersive solid-phase extraction of alkaloids and polyphenols using borate hypercrosslinked polymers. J Sep Sci 2023:e2300131. [PMID: 37246279 DOI: 10.1002/jssc.202300131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 05/12/2023] [Accepted: 05/16/2023] [Indexed: 05/30/2023]
Abstract
In this study, a borate hyper-crosslinked polymer was synthesized by crosslinking 1-naphthalene boric acid and dimethoxymethane via the Friedel-Crafts reaction. The prepared polymer exhibits excellent adsorption performance toward alkaloids and polyphenols with maximum adsorption capacities ranging from 25.07 to 39.60 mg/g. Adsorption kinetics and isotherms model results indicated the adsorption was a monolayer and chemical process. Under the optimal extraction conditions, a sensitive method was established for the simultaneous quantification of alkaloids and polyphenols in green tea and Coptis chinensis by coupling with the proposed sorbent and ultra-high performance liquid chromatography detection. The proposed method exhibited a wide linear range of 5.0-5000.0 ng/ml with R2 ≥ 0.99, a low limit of detection (0.66-11.25 ng/ml), and satisfactory recoveries (81.2%-117.4%). This work provides a simple and convenient candidate for the sensitive determination of alkaloids and polyphenols in green tea and complex herbal products.
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Affiliation(s)
- Xiaobing Liu
- Henan University of Chinese Medicine, Zhengzhou, P. R. China
| | - Pan Wang
- Henan University of Chinese Medicine, Zhengzhou, P. R. China
| | - Kai Hu
- Henan University of Chinese Medicine, Zhengzhou, P. R. China
| | - Lixin Li
- Henan University of Chinese Medicine, Zhengzhou, P. R. China
| | - Cheng Yang
- Henan University of Chinese Medicine, Zhengzhou, P. R. China
| | - Zhihong Chen
- Henan University of Chinese Medicine, Zhengzhou, P. R. China
| | - Huahui Zeng
- Henan University of Chinese Medicine, Zhengzhou, P. R. China
| | - Zhenqiang Zhang
- Henan University of Chinese Medicine, Zhengzhou, P. R. China
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5
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Carbonized π-conjugated polymer-coated porous silica: preparation and evaluating its extraction ability for berberine. Mikrochim Acta 2022; 189:401. [PMID: 36190563 DOI: 10.1007/s00604-022-05496-y] [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: 08/31/2022] [Accepted: 09/12/2022] [Indexed: 10/10/2022]
Abstract
In view of the limitations of existing berberine solid-phase extraction adsorbents, this paper proposes a novel carbonized π-conjugated polymer-coated porous silica (SiO2@C-π-CP) adsorbent with simple process and low cost for efficient extraction of berberine by multiple interactions. Characterization methods, including Brunner-Emmet-Teller measurement, thermogravimetric analysis, X-ray photoelectron spectroscopy, and scanning electron microscopy techniques, were used to verify the successful modification of carbonized π-conjugated polymer on the surface of porous silica. The berberine was selected as target molecule, and the adsorption mechanism and process were investigated through adsorption kinetics, adsorption isotherms, and thermodynamic studies. The fitting results show that the adsorption of berberine by SiO2@C-π-CP well conforms to the pseudo-second-order and Langmuir models. By optimizing the main SPE parameters, the SPE method based on SiO2@C-π-CP was developed. Excellent results were obtained, including low limit of detection (0.75 ng mL-1) and limit of quantification (2 ng mL-1), wide linearity (2-13,000 ng mL-1), and satisfactory relative standard deviations (RSD) of inter-day (1.5%) and intra-day (6.2%). Finally, the SiO2@C-π-CP also has been successfully used to the enrichment of berberine in real urine samples. This research makes clear that SiO2@C-π-CP has outstanding potential for trace enrichment of berberine alkaloids.
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6
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Zhou X, Chen G, Yin S, Chen L, Gao P, Xiao S, Yang F. Magnetic porous carbon derived from NH
2
‐MIL‐101(Fe) as an adsorbent for the magnetic solid‐phase extraction of anthraquinones. SEPARATION SCIENCE PLUS 2022. [DOI: 10.1002/sscp.202200065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xi Zhou
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering Chongqing University Chongqing P. R. China
| | - Guo‐Ying Chen
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering Chongqing University Chongqing P. R. China
| | - Shi‐Jun Yin
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering Chongqing University Chongqing P. R. China
| | - Lin‐Xiao Chen
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering Chongqing University Chongqing P. R. China
| | - Peng Gao
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering Chongqing University Chongqing P. R. China
| | - Shang‐You Xiao
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering Chongqing University Chongqing P. R. China
| | - Feng‐Qing Yang
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering Chongqing University Chongqing P. R. China
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7
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Zhou X, Yin SJ, Chen GY, Xiao SY, Yang FQ. Preparation of magnetic metal-organic framework MIL-101(Fe) and its application in the extraction of anthraquinones in rhubarb. J Sep Sci 2022; 45:2262-2272. [PMID: 35451229 DOI: 10.1002/jssc.202200190] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/02/2022] [Accepted: 04/04/2022] [Indexed: 11/07/2022]
Abstract
In this work, a magnetic octahedral metal organic framework (Fe3 O4 @NH2 -MIL-101(Fe)) was synthesized for the magnetic solid phase extraction of three anthraquinones, including aloe-emodin, emodin, and physcion, in rhubarb. The Fe3 O4 @NH2 -MIL-101(Fe) exhibited a high specific surface area of 259.2 m2 /g with an average pore size of 6.0 nm and a high magnetic responsivity of 23.4 emu/g, which may be used as an adsorbent for rapid preconcentration and separation of target analytes. The main parameters for magnetic solid phase extraction of anthraquinones, including the amount of adsorbent, extraction time, extraction temperature, extraction pH, elution solvent, and elution time, were systematically optimized. The whole extraction process required a very low amount of adsorbent and a small volume of the sample. Besides, under the optimized conditions, the method showed satisfactory spiked recovery for anthraquinones in the range of 93.3%-109.1%, and the LODs were 1.7-3.4 ng/mL. The RSDs for intra- and inter- day precision were 0.2%-1.3% and 0.2%-0.6%, respectively. The experimental results indicate that the developed method is feasible for the analysis of anthraquinones in rhubarb. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Xi Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Shi-Jun Yin
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Guo-Ying Chen
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Shang-You Xiao
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
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8
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Wei Y, Liu T, Zheng B, Song Y, Wang S, Zheng M, Xu Y, Chi Y, Zhao M, Duan JA, Han S, Liu R. A strategy for the enrichment and characterization of disulfide bond-contained proteins from Chinese cobra (Naja atra) venom. J Sep Sci 2021; 45:812-823. [PMID: 34898000 DOI: 10.1002/jssc.202100620] [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: 08/06/2021] [Revised: 11/28/2021] [Accepted: 12/06/2021] [Indexed: 11/11/2022]
Abstract
A new strategy combined gold-coated magnetic nanocomposites assisted enrichment with mass spectrometry was developed for the characterization of disulfide bond-contained proteins from Chinese cobra (Naja atra) venom. In this work, core-shell nanocomposites were synthesized by the seed-mediated growth method and used for the enrichment of snake venom proteins containing disulfide bonds. A total of 3545 tryptic digested peptides derived from 96 venom proteins in Naja atra venom were identified. The venom proteins comprised 14 toxin families including three-finger toxins, phospholipase A2 , snake venom metalloproteinase, cobra venom factor, and so forth. Extra 16 venom proteins were detected exclusively in the nanocomposites set, among which 11 venom proteins were from the three-finger toxins family. In the present study, the proposed simple and efficient protocol replaced the tedious and laborious technologies commonly used for pre-separating crude snake venom, suggesting widely implementation in low-abundance or trace disulfide bond-contained proteins or peptides characterization.
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Affiliation(s)
- Yuanqing Wei
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China.,Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing, 210023, P. R. China.,Jiangsu Key Laboratory of Research and Development in Marine Bio-resource Pharmaceutics, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Ting Liu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Binru Zheng
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Yilin Song
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Shengsong Wang
- Anhui Qimen Institute of Snakebite, Huangshan, 245000, P. R. China
| | - Mojuan Zheng
- Anhui Qimen Institute of Snakebite, Huangshan, 245000, P. R. China
| | - Yanling Xu
- Anhui Qimen Institute of Snakebite, Huangshan, 245000, P. R. China
| | - Yumei Chi
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Ming Zhao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China.,Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing, 210023, P. R. China
| | - Jin-Ao Duan
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China.,Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing, 210023, P. R. China
| | - Shuying Han
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Rui Liu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China.,Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing, 210023, P. R. China.,Jiangsu Key Laboratory of Research and Development in Marine Bio-resource Pharmaceutics, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
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9
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Meng Z, Liu Z, Fan J, Li J, Zhou W, Gao H, Lu R. Perfluoro octanoic acid-modified magnetic hyperbranched polyamideamine as a sorbent for the extraction of fluorine-containing pesticides from water samples. J Sep Sci 2021; 44:3830-3839. [PMID: 34431614 DOI: 10.1002/jssc.202100502] [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: 06/25/2021] [Revised: 08/16/2021] [Accepted: 08/18/2021] [Indexed: 11/09/2022]
Abstract
Perfluoro octanoic acid was modified on the surface of magnetic hyperbranched polyamideamine by acid amine condensation. The morphology and chemical composition of perfluoro octanoic acid-modified magnetic hyperbranched polyamideamine was characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, zeta potential, particle size analysis, Brunauer-Emmett-Teller measurement, and X-ray photoelectron spectroscopy. Perfluoro octanoic acid-modified magnetic hyperbranched polyamideamine was applied in magnetic solid phase extraction for the separation and enrichment of four fluorine-containing pesticides (indoxacarb, metaflumizone, cyflumetofen, and cyhalothrin). The magnetic solid phase extraction method based on perfluoro octanoic acid-modified magnetic hyperbranched polyamideamine has low method detection limits (0.30-0.49 μg/L), a satisfactory coefficient of determination (0.9995-0.9999), wide linear ranges (2.5-250 μg/L), and good repeatability (intraday: 2.6-4.7%; interday: 1.1-7.9%). The enrichment factors and extraction efficiences varied from 55 to 76 and 69 to 96%, respectively. The sorbent-to-sorbent reproducibility was in the range of 3.2-7.6%, indicating that the synthesis of the sorbent was reliable. For the detection of actual water samples, the relative recoveries were in the range from 80.1 to 114.4% with relative standard deviations less than 9.6%. The calculation results of quantum chemistry calculations showed that after the modification of perfluoro octanoic acid, the interaction between the sorbent and four fluorine-containing pesticides was stronger.
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Affiliation(s)
- Zilin Meng
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Zikai Liu
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Jiaxuan Fan
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Jing Li
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Wenfeng Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Haixiang Gao
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Runhua Lu
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
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10
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Liu Z, Meng Z, Fan J, Li J, Zhou W, Gao H, Zhang S, Lu R. Use of 1-octyl-3-methylimidazole hexafluorophosphate modified magnetic hyperbranched polyamideamine as sorbent for the extraction of pyrethroid insecticides from tea infusion. J Sep Sci 2021; 44:2957-2964. [PMID: 34021970 DOI: 10.1002/jssc.202100230] [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: 03/19/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 11/12/2022]
Abstract
Magnetic hyperbranched polyamideamine was carboxylated using succinic anhydride and modified further with 1-octyl-3-methylimidazole hexafluorophosphate successively. The morphology and chemical composition of the prepared material was characterized by transmission electron microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller measurement, X-ray photoelectron spectroscopy, etc. 1-Octyl-3-methylimidazole hexafluorophosphate modified magnetic hyperbranched polyamideamine was used as sorbent in the magnetic solid-phase extraction for the separation and enrichment of five pyrethroid insecticides from tea infusion. The magnetic solid-phase extraction method proposed in this article has low method detection limits (0.53-0.71 ng/mL), acceptable coefficient of determination (0.9992-0.9998), wide linear ranges (2.5-500.0 ng/mL), and good repeatability (intraday: 1.2-6.3%; interday: 1.6-5.4%). In the detection of five pyrethroid insecticides in tea infusion, relative recoveries were in the range from 87.7 to 114.7% with satisfactory relative standard deviations (0.2-7.4%). With the aid of quantum chemistry calculations, the interaction energy between the sorbent and five pyrethroid insecticides was calculated, which proved the necessity of the modification of 1-octyl-3-methylimidazole hexafluorophosphate.
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Affiliation(s)
- Zikai Liu
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Zilin Meng
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Jiaxuan Fan
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Jing Li
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Wenfeng Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Haixiang Gao
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Sanbing Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
| | - Runhua Lu
- Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China
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11
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Wan T, Chen Z. Covalent organic nanospheres modified magnetic nanoparticles for extraction of blood lipid regulators in water samples. J Sep Sci 2021; 44:2301-2309. [PMID: 33783965 DOI: 10.1002/jssc.202001283] [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: 12/30/2020] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 01/04/2023]
Abstract
Covalent organic nanospheres are new kind of nanospherical polymer with large specific surface area, uniform morphology, and excellent chemical and thermal stability. This material can be fabricated by a facile and rapid room temperature solution-phase strategy. In this work, magnetic nanoparticles were attached to the surface of covalent organic nanospheres, and the obtained composites were used for the extraction of blood lipid regulators such as clofibrate and fenofibrate. These composites were characterized with Fourier-transformed infrared spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. Several parameters that might affect the extraction efficiency including acetonitrile content, pH value, extraction time, and sample volume were investigated. Under optimum conditions, the proposed analytical method showed high extraction efficiency toward clofibrate and fenofibrate with enrichment factors between 60 and 83. This method exhibited outstanding analytical performance with wide linear range and excellent reproducibility and had low limits of detection in the range of 0.02-0.03 ng/mL. This method was also applied to the detection of clofibrate and fenofibrate in lake water samples, and good recoveries in the range of 92.6-112.6% was obtained.
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Affiliation(s)
- Tianfeng Wan
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China.,State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing, P. R. China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China.,State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing, P. R. China
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