1
|
García-Nicolás M, Arroyo-Manzanares N, Viñas P. Dispersive Magnetic Solid-Phase Extraction as a Novelty Sample Treatment for the Determination of the Main Aflatoxins in Paprika. Toxins (Basel) 2023; 15:160. [PMID: 36828474 PMCID: PMC9959555 DOI: 10.3390/toxins15020160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
Dispersive magnetic solid-phase extraction (DMSPE) technique is proposed as a new sensitive and effective sample treatment method for the determination of aflatoxins in paprika samples. DMSPE was followed by ultrahigh-performance liquid chromatography and high-resolution mass spectrometry detection (UHPLC-HRMS) using a non-targeted acquisition mode for the detection of main aflatoxins (aflatoxin G1, G2, B1 and B2) and derivatives. DMSPE was based on the use of magnetic nanocomposite coated with polypyrrole (PPy) polymer and the main experimental parameters influencing the extraction efficiency in adsorption and desorption steps have been studied and optimized. Analyses were performed using 250 µL magnetic PPy nanocomposite into the sample solution, adsorbing the analytes in 30 min and desorbing them with ethyl acetate (2 mL) in 15 min. The method has been validated, obtaining quantification limits between 3.5 and 4.7 µg kg-1 and recoveries between 89.5-97.7%. The high recovery rate, wide detection range and the use for the first time of the reusable Fe3O4@PPy nanomaterial in suspension for solid food matrices, guarantee the usefulness of the method developed for adequate control of aflatoxins levels in paprika. The proposed methodology was applied for the analysis of 31 samples (conventional and organic) revealing the absence of aflatoxins in the samples.
Collapse
Affiliation(s)
| | | | - Pilar Viñas
- Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, E-30100 Murcia, Spain
| |
Collapse
|
2
|
Preparation and Adsorption Properties of Magnetic Molecularly Imprinted Polymers for Selective Recognition of 17β-Estradiol. SEPARATIONS 2022. [DOI: 10.3390/separations9110381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In this paper, magnetic molecularly imprinted polymers (MMIPs) were fabricated on the surface of Fe3O4 by surface molecular imprinting technology, which can selectively adsorb 17β-estradiol (E2). The optimized experiments demonstrated that MMIPs possessed the best adsorption capacity when methanol was used as the solvent and MAA was used as the crosslinking agent, with a molar ratio of E2: MMA: EGDMA as 1:4:50. SEM, FTIR, and XRD were employed to investigate the morphologies of MMIPs and the results demonstrated that the MMIPs that can selectively adsorb E2 were successfully prepared on Fe3O4 particles. The adsorption experiments showed that 92.1% of E2 was adsorbed by the MMIPs, which is higher than the magnetic non-molecularly imprinted polymers (MNIPs). The Freundlich isotherm model was more suitable to describe the adsorption process of E2 by MMIPs. Meanwhile, MMIPs had a better recognition ability for E2 and its structural analogs such as estrone and estriol. The MMIPs still had good adsorption performance after methanol regeneration five times. The prepared MMIPs had the advantages of efficient adsorption ability and high reusability, so they can be applied for selective recognition and removal of E2.
Collapse
|
3
|
Zhao B, Xu W, Ma J, Jia Q. Design and fabrication of highly hydrophilic magnetic material by anchoring L-cysteine onto chitosan for efficient enrichment of glycopeptides. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
4
|
Magnetic solid-phase extraction and pre-concentration of 17β-estradiol and 17α-ethinylestradiol in tap water using maghemite-graphene oxide nanoparticles and determination via HPLC with a fluorescence detector. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104947] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
5
|
Gao F, Qi Q, Liang X, Wen L, Shang Y, Mi Y, Ziener U, Cao Z. Fabrication of Fe
3
O
4
/
O
‐Carboxylmethyl Chitosan Magnetic Particle Assembles in Inverse Miniemulsions for Loading and Release of Bovine Serum Albumin. ChemistrySelect 2020. [DOI: 10.1002/slct.202001784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Feng Gao
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Qi Qi
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Xiaoqin Liang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Lixin Wen
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Yi Shang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Yifang Mi
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Ulrich Ziener
- Institute of Organic Chemistry III – Macromolecular Chemistry and Organic Materials, University of Ulm Albert-Einstein-Allee 11 Ulm 89081 Germany
| | - Zhihai Cao
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education Zhejiang Sci-Tech University Hangzhou 310018 China
| |
Collapse
|
6
|
Li L, Iqbal J, Zhu Y, Wang F, Zhang F, Chen W, Wu T, Du Y. Chitosan/Al2O3-HA nanocomposite beads for efficient removal of estradiol and chrysoidin from aqueous solution. Int J Biol Macromol 2020; 145:686-693. [DOI: 10.1016/j.ijbiomac.2019.12.223] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/20/2019] [Accepted: 12/24/2019] [Indexed: 12/13/2022]
|
7
|
Preparation and application of a novel magnetic molecularly imprinted polymer for simultaneous and rapid determination of three trace endocrine disrupting chemicals in lake water and milk samples. Anal Bioanal Chem 2020; 412:1835-1846. [DOI: 10.1007/s00216-020-02431-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/13/2019] [Accepted: 01/16/2020] [Indexed: 12/14/2022]
|
8
|
Li W, Zhang J, Zhu W, Qin P, Zhou Q, Lu M, Zhang X, Zhao W, Zhang S, Cai Z. Facile preparation of reduced graphene oxide/ZnFe 2O 4 nanocomposite as magnetic sorbents for enrichment of estrogens. Talanta 2019; 208:120440. [PMID: 31816803 DOI: 10.1016/j.talanta.2019.120440] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 09/18/2019] [Accepted: 10/03/2019] [Indexed: 12/18/2022]
Abstract
Reduced graphene oxide/ZnFe2O4 (rGO/ZnFe2O4) nanocomposite was facile prepared and applied as magnetic sorbent for the extraction of estrogens including 17β-estradiol, 17α-estradiol, estrone and hexestrol from water, soil, and fish samples prior to HPLC analysis. The rGO/ZnFe2O4 nanocomposite was characterized by scanning electron microscope, Fourier transform-infrared spectroscopy, X-ray diffraction, and vibrating sample magnetometer. The experimental parameters affecting the efficiency of magnetic solid-phase extraction (MSPE) including the amount of material, extraction time, pH, temperature, desorption solvents, desorption time, and desorption solvent volume were investigated respectively. With the developed method, good linearity was observed in the range of 0.05-500 ng/mL with the correlation coefficients (R2) between 0.9978 and 0.9993. The limits of detection (S/N = 3) and limits of quantification (S/N = 10) were achieved at 0.01-0.02 ng/mL and 0.05 ng/mL, respectively. The enrichment factors were calculated as the range of 241-288. Using rGO/ZnFe2O4 nanocomposite as the sorbent, the developed MSPE followed by HPLC analysis, was applied to analysis of estrogens in river water, soil and fish samples. The method has the potential application in the extraction and preconcentration ultra trace compounds in complex matrices, such as environmental and biological samples.
Collapse
Affiliation(s)
- Wenqi Li
- Henan International Joint Laboratory of Medicinal Plants Utilization, School of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, China
| | - Jing Zhang
- Henan International Joint Laboratory of Medicinal Plants Utilization, School of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, China
| | - Wenli Zhu
- Henan International Joint Laboratory of Medicinal Plants Utilization, School of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, China
| | - Peige Qin
- Henan International Joint Laboratory of Medicinal Plants Utilization, School of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, China
| | - Qian Zhou
- Henan International Joint Laboratory of Medicinal Plants Utilization, School of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, China
| | - Minghua Lu
- Henan International Joint Laboratory of Medicinal Plants Utilization, School of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, Henan, China.
| | - Xuebin Zhang
- Center for Multi-Omics Research, Institute of Plant Stress Biology, Henan University, Kaifeng, 475004, Henan, China
| | - Wuduo Zhao
- Center for Advanced Analysis and Computational Science, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Shusheng Zhang
- Center for Advanced Analysis and Computational Science, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China.
| |
Collapse
|
9
|
Tolessa T, Zhou XX, Amde M, Liu JF. Development of reusable magnetic chitosan microspheres adsorbent for selective extraction of trace level silver nanoparticles in environmental waters prior to ICP-MS analysis. Talanta 2017; 169:91-97. [DOI: 10.1016/j.talanta.2017.03.064] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 03/15/2017] [Accepted: 03/20/2017] [Indexed: 01/05/2023]
|
10
|
Gong SX, Wang XL, Liu W, Wang ML, Wang X, Wang ZW, Zhao RS. Aminosilanized magnetic carbon microspheres for the magnetic solid-phase extraction of bisphenol A, bisphenol AF, and tetrabromobisphenol A from environmental water samples. J Sep Sci 2017; 40:1755-1764. [DOI: 10.1002/jssc.201601228] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 02/07/2017] [Accepted: 02/07/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Sheng-Xiang Gong
- Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre; Shandong Academy of Sciences; Jinan China
- College of Food Science and Engineering; Shandong Agricultural University; Taian China
- Department of Food Science and Technology, School of Agriculture and Biology; Shanghai Jiao Tong University; Shanghai China
| | - Xiao-Li Wang
- Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre; Shandong Academy of Sciences; Jinan China
| | - Wei Liu
- Shandong Provincial Environment Monitoring Center; Jinan China
| | - Ming-Lin Wang
- College of Food Science and Engineering; Shandong Agricultural University; Taian China
| | - Xia Wang
- Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre; Shandong Academy of Sciences; Jinan China
| | - Zheng-Wu Wang
- Department of Food Science and Technology, School of Agriculture and Biology; Shanghai Jiao Tong University; Shanghai China
| | - Ru-Song Zhao
- Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre; Shandong Academy of Sciences; Jinan China
| |
Collapse
|
11
|
Preparation and characterization of chitosan microparticles for immunoaffinity extraction and determination of enrofloxacin. Int J Biol Macromol 2016; 93:783-788. [PMID: 27640092 DOI: 10.1016/j.ijbiomac.2016.09.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/12/2016] [Accepted: 09/13/2016] [Indexed: 11/21/2022]
Abstract
The use of chitosan microparticles as chromatographic support has received much attention. In this study, the effects of process parameters, namely, chitosan molecular weight, chitosan concentration, molar ratio of amino group to aldehyde group, volume ratio of water to oil phase and stirring speed on the size and size distribution of chitosan microparticles and their application for immunoaffinity extraction were extensively investigated. Size distribution analysis indicated that the average diameter of the microparticles was 124μm with Span value of 1.1. The obtained microparticles exhibited low non-specific adsorption and kept stable in the pH range 4.0-10.0. Immunoaffinity chromatography (IAC) column was prepared by coupling antibody against enrofloxacin (ENR) with chitosan microparticles. Further characterization indicated that the binding capacity of the column was 4392ng ENR/mL gel and the variation of ENR extraction efficiency among columns was less than 5.2%. When challenged with ENR-fortified bovine milk samples, recoveries of ENR by immunoaffinity extraction were found to be in the range of 85.9% to 101.9%, demonstrated the feasibility of the prepared IAC columns for sample clean-up in ENR residue determination.
Collapse
|
12
|
Feizbakhsh A, Sarrafi AHM, Ehteshami S. Polythiophene-Chitosan Magnetic Nanocomposite as a Highly Efficient Medium for Isolation of Fluoxetine from Aqueous and Biological Samples. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2016; 2016:2921706. [PMID: 27672478 PMCID: PMC5031841 DOI: 10.1155/2016/2921706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 04/18/2016] [Accepted: 07/03/2016] [Indexed: 06/06/2023]
Abstract
Polythiophene/chitosan magnetic nanocomposite as an adsorbent of magnetic solid phase extraction was proposed for the isolation of fluoxetine in aqueous and biological samples prior to fluorescence detection at 246 nm. The synthesized nanoparticles, chitosan and polythiophene magnetic nanocomposite, were characterized by scanning electron microscopy, FT-IR, TGA, and EDAX. The separation of the target analyte from the aqueous solution containing the fluoxetine and polythiophene/chitosan magnetic nanocomposite was simply achieved by applying external magnetic field. The main factors affecting the extraction efficiency including desorption conditions, extraction time, ionic strength, and sample solution pH were optimized. The optimum extraction conditions were obtained as 10 min for extraction time, 25 mg for sorbent amount, 50 mL for initial sample volume, methanol as desorption solvent, 1.5 mL for desorption solvent volume, 3 min for desorption time, and being without salt addition. Under the optimum conditions, good linearity was obtained within the range of 15-1000 μg L(-1) for fluoxetine, with correlation coefficients 0.9994. Furthermore, the method was successfully applied to the determination of fluoxetine in urine and human blood plasma samples. Compared with other methods, the current method is characterized with highly easy, fast separation and low detection limits.
Collapse
Affiliation(s)
- Alireza Feizbakhsh
- Analytical Chemistry Laboratories, Department of Chemistry, Islamic Azad University, Central Tehran Branch, Tehran, Iran
| | - Amir Hossein Mohsen Sarrafi
- Analytical Chemistry Laboratories, Department of Chemistry, Islamic Azad University, Central Tehran Branch, Tehran, Iran
| | - Shokooh Ehteshami
- Analytical Chemistry Laboratories, Department of Chemistry, Islamic Azad University, Central Tehran Branch, Tehran, Iran
| |
Collapse
|
13
|
Feizbakhsh A, Ehteshami S. Polythiophene–Chitosan Magnetic Nanocomposite as a Novel Sorbent for Disperse Magnetic Solid Phase Extraction of Triazine Herbicides in Aquatic Media. Chromatographia 2016. [DOI: 10.1007/s10337-016-3134-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
14
|
Maddah B, Alidadi S, Hasanzadeh M. Extraction of organophosphorus pesticides by carbon-coated Fe3 O4 nanoparticles through response surface experimental design. J Sep Sci 2015; 39:256-63. [PMID: 26519201 DOI: 10.1002/jssc.201500822] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/20/2015] [Accepted: 10/16/2015] [Indexed: 11/08/2022]
Abstract
In this paper, carbon-coated Fe3 O4 nanoparticles were successfully synthesized and used as a magnetic solid-phase extraction absorbent for the preconcentration and extraction of organophosphorus pesticides in environmental water samples. The carbon-coated Fe3 O4 nanoparticles were characterized by transmission electron microscopy, X-ray powder diffraction, Fourier transform infrared spectroscopy, and vibrating sample magnetometry. The determination of organophosphorus pesticides in water samples with carbon-coated Fe3 O4 nanoparticles was investigated by high-performance liquid chromatography with a diode array detector. Furthermore, the response surface model based on the central composite design was applied to quantitatively investigate the effect of some important variables influencing the extraction efficiency, such as pH, treatment time, amount of nanoparticle sorbents, and amount of salt and to find the optimized conditions providing the highest extraction efficiency. Under optimized conditions, the calibration curve was linear in the range of 0.5-15.0 ng/mL with a regression coefficient of 0.9948, 0.9958, and 0.9931 for fenitrothion, diazinon, and ethion, respectively. The obtained results showed that this analytical method would be useful for the analysis of fenitrothion, diazinon, and ethion in tap water with high precision and accuracy.
Collapse
Affiliation(s)
| | - Sattar Alidadi
- Department of Chemistry, Imam Hossein University, Tehran, Iran
| | - Mahdi Hasanzadeh
- Department of Textile Engineering, University of Guilan, Rasht, Iran
| |
Collapse
|
15
|
Wen Y, Niu Z, Ma Y, Ma J, Chen L. Graphene oxide-based microspheres for the dispersive solid-phase extraction of non-steroidal estrogens from water samples. J Chromatogr A 2014; 1368:18-25. [DOI: 10.1016/j.chroma.2014.09.049] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 09/22/2014] [Accepted: 09/22/2014] [Indexed: 01/07/2023]
|
16
|
Zhang R, Wang C, Yue Q, Zhou T, Li N, Zhang H, Hao X. Ionic liquid foam floatation coupled with ionic liquid dispersive liquid-liquid microextraction for the separation and determination of estrogens in water samples by high-performance liquid chromatography with fluorescence detection. J Sep Sci 2014; 37:3133-41. [PMID: 25146581 DOI: 10.1002/jssc.201400568] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 08/05/2014] [Accepted: 08/06/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Rui Zhang
- Department of Clinical Laboratory; Xijing Hospital; Fourth Military Medical University; Xi′an China
| | - Chuanliu Wang
- Xi an Research Institute of China Coal Technology and Engineering Group Corp; Xi′an China
| | - Qiaohong Yue
- Department of Clinical Laboratory; Xijing Hospital; Fourth Military Medical University; Xi′an China
| | - Tiecheng Zhou
- Department of Clinical Laboratory; Xijing Hospital; Fourth Military Medical University; Xi′an China
| | - Na Li
- College of Chemistry; Jilin University; Changchun China
| | - Hanqi Zhang
- College of Chemistry; Jilin University; Changchun China
| | - Xiaoke Hao
- Department of Clinical Laboratory; Xijing Hospital; Fourth Military Medical University; Xi′an China
| |
Collapse
|
17
|
Hu L, Cheng Q, Chen D, Ma M, Wu K. Liquid-phase exfoliated graphene as highly-sensitive sensor for simultaneous determination of endocrine disruptors: diethylstilbestrol and estradiol. JOURNAL OF HAZARDOUS MATERIALS 2014; 283:157-163. [PMID: 25265595 DOI: 10.1016/j.jhazmat.2014.08.067] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/01/2014] [Accepted: 08/24/2014] [Indexed: 06/03/2023]
Abstract
It is quite important to develop convenient and rapid analytical methods for trace levels of endocrine disruptors because they heavily affect health and reproduction of humans and animals. Herein, graphene was easily prepared via one-step exfoliation using N-methyl-2-pyrrolidone as solvent, and then used to construct an electrochemical sensor for highly-sensitive detection of diethylstilbestrol (DES) and estradiol (E2). On the surface of prepared graphene film, two independent and greatly-increased oxidation waves were observed at 0.28V and 0.49V for DES and E2. The remarkable signal enlargements indicated that the detection sensitivity was improved significantly. The influences of pH value, amount of graphene and accumulation time on the oxidation signals of DES and E2 were discussed. As a result, a highly-sensitive and rapid electrochemical method was newly developed for simultaneous detection of DES and E2. The values of detection limit were evaluated to be 10.87 nM and 4.9 nM for DES and E2. Additionally, this new method was successfully used in lake water samples and the accuracy was satisfactory.
Collapse
Affiliation(s)
- Lintong Hu
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qin Cheng
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Danchao Chen
- Ningbo Entry-exit Inspection and Quarantine Bureau of China, Ningbo 315012, China
| | - Ming Ma
- Ningbo Entry-exit Inspection and Quarantine Bureau of China, Ningbo 315012, China
| | - Kangbing Wu
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| |
Collapse
|
18
|
Sun Q, Qiao X, Zhao Y, Xu Z. Synthesis of an Organic-Inorganic Hybrid Polymeric Material and its Adsorption Performance Characterization Toward Acrylamide. J MACROMOL SCI B 2014. [DOI: 10.1080/00222348.2013.857550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
19
|
Shi C, Dai* B, Liu M, Xu Z. Preparation of an Estriol Surface Imprinted Polymer and its Adsorption Ability Evaluation. J MACROMOL SCI B 2014. [DOI: 10.1080/00222348.2013.857534] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
20
|
Sun Q, Qiao X, Zhao Y, Xu Z. Synthesis of an Organic–Inorganic Hybrid Polymeric Material and Its Adsorption Performance Characterization Toward Acrylamide. J MACROMOL SCI B 2014. [DOI: 10.1080/00222348.2013.846812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
21
|
Reddy DHK, Lee SM. Application of magnetic chitosan composites for the removal of toxic metal and dyes from aqueous solutions. Adv Colloid Interface Sci 2013; 201-202:68-93. [PMID: 24182685 DOI: 10.1016/j.cis.2013.10.002] [Citation(s) in RCA: 316] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 10/03/2013] [Accepted: 10/03/2013] [Indexed: 02/04/2023]
Abstract
Magnetic chitosan composites (MCCs) are a novel material that exhibits good sorption behavior toward various toxic pollutants in aqueous solution. These magnetic composites have a fast adsorption rate and high adsorption efficiency, efficient to remove various pollutants and they are easy to recover and reuse. These features highlight the suitability of MCCs for the treatment of water polluted with metal and organic materials. This review outlines the preparation of MCCs as well as methods to characterize these materials using FTIR, XRD, TGA and other microscopy-based techniques. Additionally, an overview of recent developments and applications of MCCs for metal and organic pollutant removal is discussed in detail. Based on current research and existing materials, some new and futuristic approaches in this fascinating area are also discussed. The main objective of this review is to provide up-to-date information about the most important features of MCCs and to show their advantages as adsorbents in the treatment of polluted aqueous solutions.
Collapse
|
22
|
Wen Y, Li J, Liu J, Lu W, Ma J, Chen L. Dual cloud point extraction coupled with hydrodynamic-electrokinetic two-step injection followed by micellar electrokinetic chromatography for simultaneous determination of trace phenolic estrogens in water samples. Anal Bioanal Chem 2013; 405:5843-52. [DOI: 10.1007/s00216-013-6989-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 04/14/2013] [Accepted: 04/15/2013] [Indexed: 11/25/2022]
|
23
|
He Z, Liu D, Li R, Zhou Z, Wang P. Magnetic solid-phase extraction of sulfonylurea herbicides in environmental water samples by Fe3O4@dioctadecyl dimethyl ammonium chloride@silica magnetic particles. Anal Chim Acta 2012; 747:29-35. [DOI: 10.1016/j.aca.2012.08.015] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/15/2012] [Accepted: 08/09/2012] [Indexed: 12/01/2022]
|
24
|
|
25
|
Xu Q, Wang M, Yu S, Tao Q, Tang M. Trace analysis of diethylstilbestrol, dienestrol and hexestrol in environmental water by Nylon 6 nanofibers mat-based solid-phase extraction coupled with liquid chromatography-mass spectrometry. Analyst 2011; 136:5030-7. [DOI: 10.1039/c1an15494j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|