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Utilization of UiO-66-NH<sub>2</sub>@cellulose hybrid aerogel for solid-phase extraction of sildenafil in health products. Se Pu 2022; 40:556-564. [PMID: 35616201 PMCID: PMC9404075 DOI: 10.3724/sp.j.1123.2021.11022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
研究建立了一种基于UiO-66-NH2@纤维素复合气凝胶的高灵敏度固相萃取新方法,与高效液相色谱法联用用于保健品中西地那非的检测。先将纤维素进行醛基和酰肼基的功能化,然后将两种功能化的纤维素通过交联并负载UiO-66-NH2形成复合气凝胶。将此复合气凝胶作为固相萃取的吸附剂使用时,易于收集且不需要外加磁场或者抽真空的辅助作用,操作简单。研究对制备所得的UiO-66-NH2@纤维素复合气凝胶进行了X-射线粉末衍射、扫描电镜、红外光谱和N2吸附等表征,结果显示UiO-66-NH2成功负载于气凝胶的孔道中,纤维素气凝胶掺杂了UiO-66-NH2之后其孔道结构变得规整,并且比表面积增大。研究优化了复合气凝胶中UiO-66-NH2的负载量对萃取的影响,高比例的负载量有利于西地那非的富集,并且最高的负载率为50%。研究优化了影响西地那非富集效率的实验条件,包括溶液pH、萃取时间、洗脱剂类型、洗脱时间、洗脱体积和离子强度。采用安捷伦Zorbax Eclipse Plus C18色谱柱(150 mm×4.6 mm, 5 μm)进行分离,以含0.1 mol/L三乙胺的磷酸盐水溶液(pH=6.50)-乙腈(30∶70, v/v)为流动相进行洗脱,检测波长为292 nm。在最佳的萃取条件下(pH为9.0,萃取时间为60 min,洗脱剂为乙腈,洗脱液体积为3×2 mL,洗脱时间为40 min),该分析方法的线性范围为10~2000 ng/mL (相关系数R2=0.9949),检出限(LOD, S/N=3)为2.85 ng/mL,富集因子为59.17。将该方法用于保健品中西地那非的萃取,所得回收率为74.93%~89.12%,相对标准偏差为2.8%~5.3%,表明了方法的回收率和精密度良好,说明了该方法具有应用于保健品中西地那非日常检测的潜力。
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Li L, Cui Y, Ren L, Li C, Liu Y, Jin Z. Magnetic dummy molecularly imprinted polymer nanoparticles as sorbent for dispersive solid-phase microextraction of phthalate monoesters in human urine samples. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106266] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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3
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Wan L, Gao H, Gao H, Yan G, Wang F, Wang Y, Chen M. Dummy molecularly imprinted solid phase extraction in a nylon membrane filter for analysis of vardenafil in health care products. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wan L, Gao H, Yan G, Gao H, Chen M. Metal-Organic Gel-Modulated Synthesis of Hierarchically Porous Molecularly Imprinted Polymers for Efficient Removal of Sildenafil from Water. ACS OMEGA 2021; 6:7478-7486. [PMID: 33778260 PMCID: PMC7992058 DOI: 10.1021/acsomega.0c06000] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/01/2021] [Indexed: 05/17/2023]
Abstract
Molecularly imprinted polymers (MIPs) with high specific recognition capability are promising in environmental remediation. However, traditional MIPs usually show poor specific binding affinity toward templates in pure aqueous medium, thus greatly limiting their practical applications in wastewater treatment. Herein, we proposed a facile and versatile method to synthesize a water-compatible hierarchically porous MIP (HP-MIP), in which a metal-organic gel (MOG) was formed by in situ assembly and acted as a removable structural modulator. Remarkably, the integration of the MOG modulator and template imprinting defects significantly improved the specific template binding affinity of HP-MIP in water. The adsorption behavior of HP-MIP fitted well with the heterogeneous Freundlich isotherm, suggesting that HP-MIP possessed greater site heterogeneity to sildenafil than HP-NIP, which confirmed the efficiency of HP-MIP for the removal of sildenafil from water. This approach provides an important pathway to prepare water-compatible porous MIP for efficient removal of highly toxic organic pollutants from wastewater.
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Affiliation(s)
- Libin Wan
- Institute
of Business Scientific, Henan Academy of
Sciences, Wenhua Road
#87, Zhengzhou, Henan 450003, China
- . Tel: +86 0371 65312969
| | - Huoliang Gao
- Institute
of Business Scientific, Henan Academy of
Sciences, Wenhua Road
#87, Zhengzhou, Henan 450003, China
| | - Ge Yan
- Institute
of Business Scientific, Henan Academy of
Sciences, Wenhua Road
#87, Zhengzhou, Henan 450003, China
| | - Haidong Gao
- Institute
of Business Scientific, Henan Academy of
Sciences, Wenhua Road
#87, Zhengzhou, Henan 450003, China
| | - Mantang Chen
- Zhengzhou
Tobacco Research Institute of CNTC, Fengyang Street #2, Zhengzhou, Henan 450001, China
- . Tel: +86 0371 67672396
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Novel synthesized attapulgite nanoparticles-based hydrophobic monolithic column for in-tube solid-phase microextraction of thiosildenafil, pseudovardenafil, and norneosildenafil in functional foods. Anal Bioanal Chem 2021; 413:1871-1882. [PMID: 33469710 DOI: 10.1007/s00216-021-03155-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/17/2020] [Accepted: 01/04/2021] [Indexed: 10/22/2022]
Abstract
In this study, a novel method which involved in-tube solid-phase microextraction (SPME) using an attapulgite (ATP) nanoparticles-based hydrophobic monolithic column was successfully developed. It was coupled with high-performance liquid chromatography-ultraviolet detection for the determination of three phosphodiesterase-5 (PDE-5) inhibitors, including thiosildenafil, pseudovardenafil, and norneosildenafil, in functional foods. The monolithic column was prepared by one-step polymerization, using 3-trimethoxysilylpropyl methacrylate-modified ATP nanoparticles and 1-butyl-3-vinylimidazolium bromide (VBIMBr) as the functional monomers, and ethylene glycol dimethacrylate (EDMA) as the cross-linker. The obtained poly(ATP-VBIMBr-EDMA) monolith was characterized by scanning electron microscopy equipped with energy-dispersive analysis of X-ray, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray diffraction. The adsorption capacity, up to 2.00 μg/cm calculated by the Langmuir isotherm model, was about six times that of the poly(VBIMBr-EDMA) monolith. Crucial factors affecting the extraction efficiency, including sample solvent, elution solvent, flow rates of sampling loading and elution, sample loading volume, and elution volume, were investigated in details. Under the optimal in-tube SPME conditions, the proposed method showed good reproducibility with run-to-run, column-to-column, and batch-to-batch relative standard deviations less than 7.2%, and low limits of detection of 0.5-0.9 ng/mL in real samples. Thiosildenafil was detected in four types of functional foods with the contents of 1.30-4.78 μg/g. This newly proposed in-tube SPME method based on poly(ATP-VBIMBr-EDMA) monolith may provide a simple, efficient, and promising alternative to daily monitoring of PDE-5 inhibitors in functional foods.
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Muschietti L, Redko F, Ulloa J. Adulterants in selected dietary supplements and their detection methods. Drug Test Anal 2020; 12:861-886. [DOI: 10.1002/dta.2806] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Liliana Muschietti
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacognosia, IQUIMEFA (UBA‐CONICET) Buenos Aires Argentina
| | - Flavia Redko
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacognosia, IQUIMEFA (UBA‐CONICET) Buenos Aires Argentina
| | - Jerónimo Ulloa
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacognosia, IQUIMEFA (UBA‐CONICET) Buenos Aires Argentina
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Wang L, Wang Y, Zhou B, Zhong M. Synthesis and characterization of core-shell magnetic molecularly imprinted polymers for selective extraction of allocryptopine from the wastewater of Macleaya cordata (Willd) R. Br. J Mol Recognit 2020; 33:e2844. [PMID: 32219908 DOI: 10.1002/jmr.2844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/22/2020] [Accepted: 02/26/2020] [Indexed: 11/05/2022]
Abstract
A novel type of magnetic molecularly imprinted polymers (MMIP) as the solid-phase extraction sorbent was prepared, which can extract effectively the allocryptopine from the waster of Macleaya cordata (Willd) R. Br. In this study, MMIP was synthesized by using Fe3 O4 @SiO2 , 4-vinyl-pyridine, ethylene glycol dimethacrylate, and allocryptopine, and these ingredients worked as magnetic core, functional monomer, cross-linker, and template, respectively. Concluded by the calculation of Gaussian 09 software, different ratio models of 4-vinyl-pyridine and allocryptopine were simulated, and the optimal ratio was 1:5 and the energy was -2205.34 kJ/mol. Transmission electron microscopy, vibration sample magnetometry, X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis were used to determine the morphology and structure of MMIP. Furthermore, the results of adsorption experiments indicated that MMIP had high selectivity, excellent recyclability, and good adsorption performance (9.86 mg/g, 298 K). The adsorption process was consistent with the Langmuir adsorption isotherm (R2 > 0.98, 298 K) and pseudo-second-order kinetics model (R2 > 0.99, 298 K). After six times adsorption-desorption experiments, the adsorption amount of MMIP only reduced to 8.5%. In the experiments of selective adsorption, MMIP has better adsorption properties for allocryptopine (ALL, C21 H23 NO5 ) than those having the same functional group. The limit of detection (LOD) was 0.4 μg/mL. The relative standard deviation ranged from 0.09% to 0.72%. The recovery of allocryptopine in samples ranged from 93.60% to 106.19%. In addition, the synthesized complex had a certain adsorption effect on allocryptopine separating from the wastewater of Macleaya cordata (Willd) R. Br.
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Affiliation(s)
- Lu Wang
- School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, China
| | - Yanhong Wang
- School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, China
| | - Binbin Zhou
- School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, China
| | - Ming Zhong
- School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, China
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8
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Chen S, Fu J, Li Z, Zeng Y, Li Y, Su X, Jiang X, Yang H, Huang L, Zou L, He L, Liu S, Ao X, Yang Y. Preparation and application of magnetic molecular imprinted polymers for extraction of cephalexin from pork and milk samples. J Chromatogr A 2019; 1602:124-134. [PMID: 31230879 DOI: 10.1016/j.chroma.2019.06.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 05/24/2019] [Accepted: 06/12/2019] [Indexed: 10/26/2022]
Abstract
A highly selective and effective method was successfully developed using magnetic molecular imprinted polymers (MMIPs) as solid-phase extraction (SPE) coupled with high performance liquid chromatography-ultraviolet detector (HPLC-UV) to rapidly determine cephalexin (CFX) in complex animal-derived food. MMIPs were creatively synthesized via suspension polymerization using Fe3O4 magnetic nanoparticles as supporter, CFX as template, acrylamide (AM) as functional monomer, and ethylene glycol dimethacrylate (EGDMA) as cross-linker. The MMIPs were characterized using X-ray diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM). The binding process fitted well with pseudo-second-order model with good selectivity. Scatchard plot analysis suggested that MMIPs have two types of binding sites with the Qmax of 24.18 mg g-1 and 40.25 mg g-1, respectively. And Langmuir model proved that the recognition sites were uniformly distributed in a monolayer on the surface of MMIPs. The methodological assessment showed good applicability of MMIPs with excellent recovery (85.5%-94.0%), precision (1.2%-2.4%), and stability (intra-day 1.3%-3.6%; inter-day 2.6%-4.3%) in determining CFX content. In addition, the linearity of the calibration curve was good in the range of 0.02-5.00 mg L-1, with a sensitive detection limit of 5.00 μg kg-1. The results above suggest that the obtained MMIPs exert good performance for separation of CFX in animal-derived food, and the proposed method is suitable for the reliable determination of CFX in complex samples.
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Affiliation(s)
- Shujuan Chen
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China.
| | - Jingxia Fu
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Zengwei Li
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, PR China
| | - Yue Zeng
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Yuzhu Li
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Xin Su
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Xiongli Jiang
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Hao Yang
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Long Huang
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Likou Zou
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, PR China
| | - Li He
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Xiaolin Ao
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
| | - Yong Yang
- College of Food Science, Sichuan Agricultural University, Ya'an, 625014, PR China
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9
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Fast extraction of chloramphenicol from marine sediments by using magnetic molecularly imprinted nanoparticles. Mikrochim Acta 2019; 186:428. [DOI: 10.1007/s00604-019-3548-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/24/2019] [Indexed: 11/25/2022]
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10
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Huang Y, Pan J, Liu Y, Wang M, Deng S, Xia Z. A SPE Method with Two MIPs in Two Steps for Improving the Selectivity of MIPs. Anal Chem 2019; 91:8436-8442. [DOI: 10.1021/acs.analchem.9b01453] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yike Huang
- School of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, P. R. China
| | - Jingmiao Pan
- School of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, P. R. China
| | - Yi Liu
- School of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, P. R. China
| | - Min Wang
- School of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, P. R. China
| | - Suya Deng
- School of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, P. R. China
| | - Zhining Xia
- School of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, P. R. China
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Amido surface-functionalized magnetic molecularly imprinted polymers for the efficient extraction of Sibiskoside from Sibiraea angustata. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1109:90-98. [PMID: 30739881 DOI: 10.1016/j.jchromb.2019.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 01/08/2019] [Accepted: 01/16/2019] [Indexed: 01/26/2023]
Abstract
A general method for efficient and selective extraction of a target compound from complex natural products remains elusive, despite decades of research. By introducing a functional amido group on the surface of dispersity-enhanced magnetic nanoparticles, a nanoparticle receptor to selectively recognize Sibiskoside (a monoterpene) from the aerial portion of Sibiraea angustata by hydrogen bond interaction was synthesized. The superparamagnetic Fe3O4 nanoparticles were successively modified with tetraethyl orthosilicate (TEOS), amino and amido functional groups, and 4-vinylbenzoic acid (VBZA) was used as the functional monomer. A thin layer of poly (VBZA) imprinted with Sibiskoside was immobilized on the surface of magnetic carriers. Attributing to the amido group introduced into the magnetic particles, the template could attract and bind to the surface and promote the formation of a hydrogen bond system between the carrier, template molecules and functional monomer. High-density molecular recognition sites grew on the surface of magnetic substrate. The adsorption reached equilibrium at approximately 150 min, while fast adsorption occurred during the first 60 min. The maximum adsorption capacity has been found to be 13.75 mg g-1 according to calculation with the Langmuir isotherm. The selectivity coefficients of Molecular imprinting polypers (MIPs) for Sibiskoside with respect to Andrographolide, Loganin, Gastrodin, geraniol-1-O-[α-l-rhamnopyranosyl-(1 → 6)-1-β-d-glucopyranoside] (GRG), Sibiscolacton and Sibiraic acid were 2.26, 1.43, 1.701.56, 1.05, 0.73 and, respectively. The results indicated that the MIPs possessed good specific adsorption capacity and selectivity toward Sibiskoside and had the potential to be a candidate for the separation and purification of monoterpenes from Sibiraea angustata, which is of great significance to obesity management.
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12
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Preparation of magnetic molecularly imprinted polymers with double functional monomers for the extraction and detection of chloramphenicol in food. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1100-1101:113-121. [DOI: 10.1016/j.jchromb.2018.09.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/31/2018] [Accepted: 09/30/2018] [Indexed: 01/16/2023]
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13
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Wang DD, Gao D, Xu WJ, Li F, Yin MN, Fu QF, Xia ZN. Magnetic molecularly imprinted polymer for the selective extraction of hesperetin from the dried pericarp of Citrus reticulata Blanco. Talanta 2018; 184:307-315. [DOI: 10.1016/j.talanta.2018.03.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/27/2018] [Accepted: 03/07/2018] [Indexed: 12/21/2022]
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14
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Gan H, Xu H. A novel aptamer-based online magnetic solid phase extraction method for the selective determination of 8-hydroxy-2'-deoxyguanosine in human urine. Anal Chim Acta 2018; 1008:48-56. [PMID: 29420943 DOI: 10.1016/j.aca.2017.12.032] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/07/2017] [Accepted: 12/16/2017] [Indexed: 12/15/2022]
Abstract
In this work, an innovative magnetic aptamer adsorbent (Fe3O4-aptamer MNPs) was synthesized for the selective extraction of 8-hydroxy-2'-deoxyguanosine (8-OHdG). Amino-functionalized-Fe3O4 was crosslinked with 8-OHdG aptamer by glutaraldehyde and fixed into a steel stainless tube as the sorbent of magnetic solid phase extraction (MSPE). After selective extraction by the aptamer adsorbent, the adsorbed 8-OHdG was desorbed dynamically and online analyzed by high performance liquid chromatography-mass spectrometry (HPLC-MS). The synthesized sorbent presented outstanding features, including specific selectivity, high enrichment capacity, stability and biocompatibility. Moreover, this proposed MSPE-HPLC-MS can achieve adsorption and desorption operation integration, greatly simplify the analysis process and reduce human errors. When compared with offline MSPE, a sensitivity enhancement of 800 times was obtained for the online method. Some experimental parameters such as the amount of the sorbent, sample flow rate and sample volume, were optimized systematically. Under the optimal conditions, low limit of detection (0.01 ng mL-1, S/N = 3), limit of quantity (0.03 ng mL-1, S/N = 10) and wide linear range with a satisfactory correlation coefficient (R2 ≥ 0.9992) were obtained. And the recoveries of 8-OHdG in the urine samples varied from 82% to 116%. All these results revealed that the method is simple, rapid, selective, sensitive and automated, and it could be expected to become a potential approach for the selective determination of trace 8-OHdG in complex urinary samples.
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Affiliation(s)
- Haijiao Gan
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, China
| | - Hui Xu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, China.
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Tao Y, Gu X, Li W, Cai B. Fabrication and evaluation of magnetic phosphodiesterase-5 linked nanoparticles as adsorbent for magnetic dispersive solid-phase extraction of inhibitors from Chinese herbal medicine prior to ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry analysis. J Chromatogr A 2017; 1532:58-67. [PMID: 29198447 DOI: 10.1016/j.chroma.2017.11.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 11/09/2017] [Accepted: 11/26/2017] [Indexed: 12/27/2022]
Abstract
In the present study, the preparation of the magnetic phosphodiesterase-5 linked Fe3O4@ SiO2 nanoparticles was successfully achieved by amide reaction and the magnetic phosphodiesterase-5 linked Fe3O4@SiO2 nanoparticles were evaluated as a new adsorbent for magnetic dispersive solid-phase extraction of ligands from medicinal plant samples before the analysis by UHPLC-Q-TOF/MS. The prepared phosphodiesterase-5 linked Fe3O4@SiO2 nanoparticles were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, vibration sample magnetometer and potential laser particle size analyzer. The effects of EDC concentration, incubation time and bead-protein ratio on the amount of immobilized protein were studied. The main experimental parameters affect extraction efficiency of ligands, such as wash times, wash solvents, incubation pH, ion strength and incubation temperature, were investigated and optimized by using echinacoside as a model compound. The absolute recovery of echinacoside was ranged from 98.36%-102.16% in Cistanche tubulosa sample under the optimal extraction conditions. Good linearity was observed in the investigated concentration range of 0.006 mgmL-1-0.97 mgmL-1(R2 = 0.9999). The limit of detection was 0.002 mgmL-1. The RSDs of within-day and between-day precision were less than 2.3%. Due to the excellent magnetic behavior of Fe3O4@SiO2 nanoparticles, the proposed method was shown to be simple and rapid. Remarkably, the magnetic phosphodiesterase-5 linked Fe3O4@SiO2 nanoparticles could be recycled for ten times with loss of 10% activity.
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Affiliation(s)
- Yi Tao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China.
| | - Xianghui Gu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Weidong Li
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Baochang Cai
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
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16
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Gao D, Wang DD, Fu QF, Wang LJ, Zhang KL, Yang FQ, Xia ZN. Preparation and evaluation of magnetic molecularly imprinted polymers for the specific enrichment of phloridzin. Talanta 2017; 178:299-307. [PMID: 29136826 DOI: 10.1016/j.talanta.2017.09.058] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/13/2017] [Accepted: 09/17/2017] [Indexed: 10/18/2022]
Abstract
In present study, magnetic molecularly imprinted polymers (MMIPs) were successfully prepared for specific recognition and selective enrichment of phloridzin from the leaves of Malus doumeri (Bois) A. Chev and rats' plasma. The magnetic Fe3O4 were prepared by the solvothermal reaction method and followed by the modification of TEOS and functionalization with APTES. Using functionalized Fe3O4 particles as the magnetic cores, phloridzin as template, ethylene glycol dimethacrylate (EGDMA) as cross-linker and 2,2-azobisisobutyonnitrile (AIBN) as initiator, the MMIPs were prepared through APTES to associate the template on the surface of the magnetic substrate. The structural features and morphological characterizations of MMIPs were performed by FT-IR, SEM, TEM, XRD, TGA and VSM. The adsorption experiments revealed that the MMIPs presented high selective recognition property to phloridzin. The selectivity experiment indicated that the adsorption capacity and selectivity of polymers to phloridzin was higher than that of baicalin and 2,3,5,4'-ttrahydroxy stilbene-2-O-β-D-glucoside. Furthermore, the MMIPs were employed as adsorbents for extraction and enrichment of phloridzin from the leaves of M. doumeri and rats' plasma. The recoveries of phloridzin in the leaves of M. doumeri ranged from 81.45% to 90.27%. The maximum concentration (Cmax) of phloridzin in rats' plasma was detected as 12.19 ± 0.84μg/mL at about 15min after oral administration of phloridzin (200mg/kg). These results demonstrate that the prepared MMIPs are suitable for the selective adsorption of phloridzin from complex samples such as natural medical plants and biological samples.
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Affiliation(s)
- Die Gao
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Dan-Dan Wang
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Qi-Feng Fu
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Lu-Jun Wang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Kai-Lian Zhang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Zhi-Ning Xia
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.
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Asfaram A, Ghaedi M, Purkait MK. Novel synthesis of nanocomposite for the extraction of Sildenafil Citrate (Viagra) from water and urine samples: Process screening and optimization. ULTRASONICS SONOCHEMISTRY 2017. [PMID: 28633848 DOI: 10.1016/j.ultsonch.2017.03.045] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A sensitive analytical method is investigated to concentrate and determine trace level of Sildenafil Citrate (SLC) present in water and urine samples. The method is based on a sample treatment using dispersive solid-phase micro-extraction (DSPME) with laboratory-made Mn@ CuS/ZnS nanocomposite loaded on activated carbon (Mn@ CuS/ZnS-NCs-AC) as a sorbent for the target analyte. The efficiency was enhanced by ultrasound-assisted (UA) with dispersive nanocomposite solid-phase micro-extraction (UA-DNSPME). Four significant variables affecting SLC recovery like; pH, eluent volume, sonication time and adsorbent mass were selected by the Plackett-Burman design (PBD) experiments. These selected factors were optimized by the central composite design (CCD) to maximize extraction of SLC. The results exhibited that the optimum conditions for maximizing extraction of SLC were 6.0 pH, 300μL eluent (acetonitrile) volume, 10mg of adsorbent and 6min sonication time. Under optimized conditions, virtuous linearity of SLC was ranged from 30 to 4000ngmL-1 with R2 of 0.99. The limit of detection (LOD) was 2.50ngmL-1 and the recoveries at two spiked levels were ranged from 97.37 to 103.21% with the relative standard deviation (RSD) less than 4.50% (n=15). The enhancement factor (EF) was 81.91. The results show that the combination UAE with DNSPME is a suitable method for the determination of SLC in water and urine samples.
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Affiliation(s)
- Arash Asfaram
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Mehrorang Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
| | - Mihir Kumar Purkait
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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18
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Hemmati M, Asghari A, Ghaedi M, Rajabi M. Chemometric assisted sonochemical dyes adsorption in ternary solutions onto Cu nanowires loaded on activated carbon. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.03.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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19
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Campillo N, Marín J, Fenoll J, Garrido I, López-García I, Hernández-Córdoba M, Viñas P. Determination of synthetic phosphodiesterase-5 inhibitors by LC-MS 2 in waters and human urine submitted to dispersive liquid-liquid microextraction. Talanta 2017; 174:638-644. [PMID: 28738634 DOI: 10.1016/j.talanta.2017.06.076] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 06/27/2017] [Accepted: 06/28/2017] [Indexed: 01/13/2023]
Abstract
High-performance liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI-MS2) with a triple quadrupole is proposed for determining the synthetic phosphodiesterase-5 inhibitors, sildenafil, tadalafil and vardenafil, and the active metabolite N-desmethyl sildenafil. The method was successfully applied to the analysis of waters of different origins and human urine samples. Dispersive liquid-liquid microextraction (DLLME) was applied in the classical way for water analysis, whereas a previous extraction into an organic solvent was necessary for urine samples, the acetonitrile extract being used as dispersant solvent in the DLLME step. The analytes were determined by LC-ESI-MS2 in the multiple reaction monitoring mode. Detection limits were in the 5-50 and 15-250ngL-1 ranges for water and urine samples, respectively. The repeatability was calculated using the relative standard deviation, obtaining values of between 3.6% and 10.1%. The enrichment factors were between 75 and 81. Accuracy of the procedure was calculated through recovery assays and average recoveries ± SD (n = 48) of 93.6 ± 3.5 and 91.1 ± 3.5 were obtained for water and urine samples, respectively. None of the samples analyzed contained the target compounds, at least above the corresponding detection limits.
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Affiliation(s)
- Natalia Campillo
- Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum" University of Murcia, E-30100 Murcia, Spain
| | - Javier Marín
- Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum" University of Murcia, E-30100 Murcia, Spain
| | - José Fenoll
- Equipo de Calidad Alimentaria, Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), C/ Mayor s/n, La Alberca, 30150 Murcia, Spain
| | - Isabel Garrido
- Equipo de Calidad Alimentaria, Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), C/ Mayor s/n, La Alberca, 30150 Murcia, Spain
| | - Ignacio López-García
- Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum" University of Murcia, E-30100 Murcia, Spain
| | - Manuel Hernández-Córdoba
- Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum" University of Murcia, E-30100 Murcia, Spain.
| | - Pilar Viñas
- Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum" University of Murcia, E-30100 Murcia, Spain
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20
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Wei S, Li J, Liu Y, Ma J. Development of magnetic molecularly imprinted polymers with double templates for the rapid and selective determination of amphenicol antibiotics in water, blood, and egg samples. J Chromatogr A 2016; 1473:19-27. [DOI: 10.1016/j.chroma.2016.10.067] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 10/20/2016] [Accepted: 10/26/2016] [Indexed: 01/19/2023]
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21
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He XP, Lian ZR, Tan LJ, Wang JT. Preparation and characterization of magnetic molecularly imprinted polymers for selective trace extraction of dienestrol in seawater. J Chromatogr A 2016; 1469:8-16. [DOI: 10.1016/j.chroma.2016.09.052] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/21/2016] [Accepted: 09/22/2016] [Indexed: 02/02/2023]
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22
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Khoshhesab ZM, Mirzaie A. Magnetic solid phase extraction of copper from aquatic samples by Fe3O4/SiO2 nanoparticles followed by atomic absorption spectrometric determination. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1168844] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Afsaneh Mirzaie
- Department of Chemistry, Payame Noor University (PNU), Tehran, I.R. of Iran
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23
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Huang B, Zhou X, Chen J, Wu G, Lu X. Determination of malachite green in fish based on magnetic molecularly imprinted polymer extraction followed by electrochemiluminescence. Talanta 2015; 142:228-34. [DOI: 10.1016/j.talanta.2015.04.053] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 04/15/2015] [Accepted: 04/17/2015] [Indexed: 11/15/2022]
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24
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Chen F, Zhang J, Wang M, Kong J. Magnetic molecularly imprinted polymers synthesized by surface-initiated reversible addition-fragmentation chain transfer polymerization for the enrichment and determination of synthetic estrogens in aqueous solution. J Sep Sci 2015; 38:2670-6. [DOI: 10.1002/jssc.201500407] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 01/11/2023]
Affiliation(s)
- Fangfang Chen
- Shaanxi Key Laboratory of Macromolecular Science and Technology,MOE Key Laboratory of Space Applied Physics and Chemistry; School of Science, Northwestern Polytechnical University; Xi'an P. R. China
| | - Jingjing Zhang
- Shaanxi Key Laboratory of Macromolecular Science and Technology,MOE Key Laboratory of Space Applied Physics and Chemistry; School of Science, Northwestern Polytechnical University; Xi'an P. R. China
| | - Minjun Wang
- Shaanxi Key Laboratory of Macromolecular Science and Technology,MOE Key Laboratory of Space Applied Physics and Chemistry; School of Science, Northwestern Polytechnical University; Xi'an P. R. China
| | - Jie Kong
- Shaanxi Key Laboratory of Macromolecular Science and Technology,MOE Key Laboratory of Space Applied Physics and Chemistry; School of Science, Northwestern Polytechnical University; Xi'an P. R. China
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25
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Meng J, Zhang W, Bao T, Chen Z. Novel molecularly imprinted magnetic nanoparticles for the selective extraction of protoberberine alkaloids in herbs and rat plasma. J Sep Sci 2015; 38:2117-25. [DOI: 10.1002/jssc.201500264] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 03/24/2015] [Accepted: 03/24/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Jiawei Meng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Wuhan University); Ministry of Education, and Wuhan University School of Pharmaceutical Sciences; Wuhan China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Beijing China
| | | | | | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Wuhan University); Ministry of Education, and Wuhan University School of Pharmaceutical Sciences; Wuhan China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Beijing China
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26
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Lai JP, Zuo Y, Sun H, Yu Y. Hydrophilic molecularly imprinted microspheres functionalized with amino and carboxyl groups for highly selective recognition of human hemoglobin in aqueous solution. RSC Adv 2015. [DOI: 10.1039/c5ra04488j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
HMIMs functionalized with amino and carboxyl groups were synthesized for HHb. The HMIMs exhibit selective recognition properties toward the target protein. QCM results demonstrate the HMIMs coated electrode shows a more sensitive response to HHb than the NIMs coated one.
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Affiliation(s)
- Jia-Ping Lai
- School of Chemistry & Environment
- South China Normal University
- Guangzhou
- China
| | - Yue Zuo
- School of Chemistry & Environment
- South China Normal University
- Guangzhou
- China
| | - Hui Sun
- College of Environmental Science & Engineering
- Guangzhou University
- Guangzhou
- China
| | - Ying Yu
- School of Chemistry & Environment
- South China Normal University
- Guangzhou
- China
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27
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Magnetic solid-phase extraction based on methylcellulose coated-Fe3O4–SiO2–phenyl for HPLC–DAD analysis of sildenafil and its metabolite in biological samples. Talanta 2014; 130:427-32. [DOI: 10.1016/j.talanta.2014.07.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/28/2014] [Accepted: 07/02/2014] [Indexed: 11/20/2022]
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28
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Fabrication of enrofloxacin imprinted organic–inorganic hybrid mesoporous sorbent from nanomagnetic polyhedral oligomeric silsesquioxanes for the selective extraction of fluoroquinolones in milk samples. J Chromatogr A 2014; 1361:23-33. [DOI: 10.1016/j.chroma.2014.07.089] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 07/28/2014] [Accepted: 07/29/2014] [Indexed: 11/21/2022]
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29
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Ning F, Peng H, Li J, Chen L, Xiong H. Molecularly imprinted polymer on magnetic graphene oxide for fast and selective extraction of 17β-estradiol. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:7436-7443. [PMID: 25017481 DOI: 10.1021/jf501845w] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel nanosized substrate imprinted polymer (MIPs-GO-Fe3O4) was developed on a magnetic graphene oxide (GO-Fe3O4) surface for selective recognition and fast removal of 17β-estradiol (17β-E2). The characteristics of MIPs-GO-Fe3O4 were evaluated by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy. and vibrating sample magnetometer (VSM). Results suggested that GO had a thin single-layer structure anchoring Fe3O4 nanoparticles and that the imprinted film was coated on the GO-Fe3O4 surface. MIPs-GO-Fe3O4 was sensitive to the magnetic field and could be easily separated using an external magnet. The adsorption results indicated that the kinetic value and binding capacity of MIPs-GO-Fe3O4 were 0.0062 g (mg·min)(-1) and 4.378 μmol g(-1), respectively. The Langmuir-Freundlich isotherm and pseudo-second-order kinetic models were the main adsorption mechanisms for MIPs-GO-Fe3O4. MIPs-GO-Fe3O4 showed excellent recognition selectivity, as well as enrichment and separation abilities for 17β-E2 in complex matrices. MIPs-GO-Fe3O4 was also used to analyze 17β-E2 in real food samples, and satisfactory recoveries such as 84.20% with relative standard deviation (RSD) of 4.67% at a spike of 0.5 μmol L(-1) were obtained. Thus, the MIPs-GO-Fe3O4-based method provided a convenient and practical platform for the separation, enrichment, and removal of 17β-E2 in food samples.
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Affiliation(s)
- Fangjian Ning
- State Key Laboratory of Food Science and Technology, Nanchang University , Nanchang 330047, People's Republic of China
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30
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Zhong S, Zhou C, Zhang X, Zhou H, Li H, Zhu X, Wang Y. A novel molecularly imprinted material based on magnetic halloysite nanotubes for rapid enrichment of 2,4-dichlorophenoxyacetic acid in water. JOURNAL OF HAZARDOUS MATERIALS 2014; 276:58-65. [PMID: 24862469 DOI: 10.1016/j.jhazmat.2014.05.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/12/2014] [Accepted: 05/05/2014] [Indexed: 06/03/2023]
Abstract
A new type of magnetic halloysite nanotubes molecularly imprinted polymer (MHNTs@MIP) based on halloysite nanotubes (HNTs) with embedded magnetic nanoparticles was introduced in this study. MHNTs@MIP was prepared through surface imprinting technology, using 2,4-dichlorophenoxyacetic acid (2,4-D) as a template, 4-vinylpyridine as the monomer, divinylbenzene as cross-linking agents, and 2,2-azodiisobutyronitrile as initiator. MHNTs@MIP was characterized by Fourier Transform Infrared Spectrometer, transmission electron microscopy, X-ray diffraction, and vibrating sample magnetometer. MHNTs@MIP exhibited rapid and reliable analysis with supermagnetic properties, as well as repeated use and template-specific recognition. The adsorption capacity of magnetic halloysite nanotubes non-imprinted polymer (MHNTs@NIP) and MHNTs@MIP was 10.3mg/g and 35.2mg/g, respectively. In the detailed discussion on specific selectivity, MHNTs@MIP can be applied as an adsorbent for sample pretreatment extraction and obtain high recoveries of about 85-94%. After extraction, high-performance liquid chromatography was used to detect 2,4-D residue in water.
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Affiliation(s)
- Shian Zhong
- School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Chengyun Zhou
- School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Xiaona Zhang
- School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Hui Zhou
- Cancer Hospital of Xiangya Medical College, Central South University, Changsha 410013, China
| | - Hui Li
- School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Xiaohong Zhu
- School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Yan Wang
- School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
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