1
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Caprise MA, Quevedo AC, Riley KR. Quantitative separation of polystyrene nanoparticles in environmental matrices with picogram detection limits using capillary electrophoresis. Chem Commun (Camb) 2023; 60:63-66. [PMID: 38018288 DOI: 10.1039/d3cc04588a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
We developed a capillary electrophoresis method to separate polystyrene particles (PSPs) with different sizes or different surface functionalities. Separations were performed in buffer and 100 mg L-1 clay or 100 mg L-1 Suwanee River humic acid. In all solutions, PSPs were baseline or near-baseline resolved in less than 15 minutes.
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Affiliation(s)
- Michael A Caprise
- Department of Chemistry & Biochemistry, Swarthmore College, 500 College Ave, Swarthmore, PA 19081, USA.
| | - Ana C Quevedo
- Department of Chemical Engineering, McGill University, Montreal, Quebec, H3A0C5, Canada
| | - Kathryn R Riley
- Department of Chemistry & Biochemistry, Swarthmore College, 500 College Ave, Swarthmore, PA 19081, USA.
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2
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Jing M, Gao W, Hutchins P. Development of Two-Dimensional Offline Coupling of Asymmetrical Flow Field-Flow Fractionation and Capillary Electrophoresis for the Separation of a Five-Component Submicrometer Particle Mixture. Anal Chem 2023; 95:3840-3847. [PMID: 36762381 DOI: 10.1021/acs.analchem.2c05352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Submicrometer colloidal particles are widely applied in a variety of industrial products. While precise size and surface charge control is crucial to the stability and functionality of these materials, a tool to determine these properties with sufficient resolution, detection sensitivity, and robustness is still not available. The recently reported offline coupling of asymmetrical flow field-flow fractionation and capillary electrophoresis (AF4 × CE) shows success in improving the separation resolution for nanoparticles; however, challenges remain for sensitive multiple-component submicrometer particle analysis because of wide size and mobility distributions. We here report offline coupling of an AF4 method and a CE method, which utilized the online reversed electrode polarity stacking mode, to successfully characterize a five-component, submicrometer particle mixture. The mixture was successfully separated and detected with an improved inter- and intracomponent resolution. Therefore, our developed platform holds great potential for industrial applications involving multiple-component particle mixtures.
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Affiliation(s)
- Meng Jing
- Analytical Science, Core R&D, Dow, Collegeville, Pennsylvania 19426, United States
| | - Wei Gao
- Analytical Science, Core R&D, Dow, Collegeville, Pennsylvania 19426, United States
| | - Paul Hutchins
- Analytical Science, Core R&D, Dow, Midland, Michigan 48640, United States
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3
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Xie H, Wei X, Zhao J, He L, Wang L, Wang M, Cui L, Yu YL, Li B, Li YF. Size characterization of nanomaterials in environmental and biological matrices through non-electron microscopic techniques. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155399. [PMID: 35472343 DOI: 10.1016/j.scitotenv.2022.155399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/14/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
Engineered nanomaterials (ENs) can enter the environment, and accumulate in food chains, thereby causing environmental and health problems. Size characterization of ENs is critical for further evaluating the interactions among ENs in biological and ecological systems. Although electron microscope is a powerful tool in obtaining the size information, it has limitations when studying nanomaterials in complex matrices. In this review, we summarized non-electron microscope-based techniques, including chromatography-based, mass spectrometry-based, synchrotron radiation- and neutron-based techniques for detecting the size of ENs in environmental and biological matrices. The advantages and disadvantages of these techniques were highlighted. The perspectives on size characterization of ENs in complex matrices were also presented.
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Affiliation(s)
- Hongxin Xie
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, Liaoning, China; CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xing Wei
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, Liaoning, China
| | - Jiating Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lina He
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Liming Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meng Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liwei Cui
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong-Liang Yu
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, Liaoning, China.
| | - Bai Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Feng Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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4
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Multivariate optimization of large-volume sample stacking with polarity switching by capillary electrophoresis for determination of gold nanoparticle size. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Abbasgholi N Asbaghi B, Alsadig A, Cabrera H. Online electrophoretic nanoanalysis using miniaturized gel electrophoresis and thermal lens microscopy detection. J Chromatogr A 2021; 1657:462596. [PMID: 34689905 DOI: 10.1016/j.chroma.2021.462596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/13/2021] [Accepted: 09/28/2021] [Indexed: 10/20/2022]
Abstract
Online thermal lens microscopy (TLM) coupled with gel electrophoresis (GE) can represent a powerful tool for separating and detecting a wide range of biomaterials. Unlike slab gel electrophoresis (SGE), the proposed method does not require prolonged procedure between separation and detection. In this work, we developed an online monitoring GE system to separate and detect nanosized materials. The design is based on a homemade and cost-effective miniaturized GE chip (MGEC) integrated with real-time TLM detection through microcontroller-based digitization board platform. To validate the feasibility and practicability of the proposed approach, we evaluated its separation capability via employing synthesized Fe3O4-Au core-shell nanoparticles (NPs) which served remarkably for the proof-of-concept. The optimum conditions for the separation process were achieved through optimization of the excitation power as 30 mW, detection position at 24 mm, the concentration of agarose gel 0.5 % w/v, and 37.5 V/cm as the effective electric field strength. The findings showed that two populations of Fe3O4-Au, core-shell, and uncapped Fe3O4 NPs, were effectively separated in less than eleven minutes, demonstrating rapid assessment of the nanomaterial production quality. Moreover, other characterization techniques such as HRTEM and EDX were employed to confirm the presence of the two dissimilar kinds of NPs separated using MGEC-TLM. The sensitivity of the method was demonstrated by determining the limit of detection (23 pM) for 10 nm AuNPs. It is envisaged that our presented system enables rapid, economical, low volume of reagents consumption and high potential analysis for quality test in various bioanalytical and nanotechnological applications.
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Affiliation(s)
| | - Ahmed Alsadig
- PhD School in Nanotechnology, University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy; NanoInnovation Lab, Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Humberto Cabrera
- Optics Lab, STI Unit, The Abdus Salam International Centre for Theoretical Physics, Trieste 34151, Italy.
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6
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Dziomba S, Ciura K, Dawid M. The on-line preconcentration of nanoparticles in electromigration techniques. J Chromatogr A 2019; 1606:360332. [PMID: 31262513 DOI: 10.1016/j.chroma.2019.06.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 02/07/2023]
Abstract
Electromigration techniques have recently emerged as an alternative analytical tool for nanoparticles characterization. Due to the high throughput capability and separation efficiency their application for detection/quantification of nanomaterials in samples of various origin has attracted much attention. While the electromigration techniques are known to suffer from insufficient detection sensitivity, a number of papers investigating on-line preconcentration of nanoparticles in capillary electrophoresis was addressed to the issue. In this work the available literature on nanoparticles stacking in electrodriven separation techniques was reviewed. The discussion was supported by theoretical background. A special emphasis was put on the stability of nanoparticles dispersion during electrophoretic process. The considerations on future perspectives were included in final remarks.
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Affiliation(s)
- Szymon Dziomba
- Department of Toxicology, Faculty of Pharmacy, Medical University of Gdansk, 107 Hallera Street, 80-416 Gdansk, Poland.
| | - Krzesimir Ciura
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Gdansk, 107 Hallera Street, 80-416 Gdansk, Poland
| | - Marta Dawid
- Department of Toxicology, Faculty of Pharmacy, Medical University of Gdansk, 107 Hallera Street, 80-416 Gdansk, Poland
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7
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Riley KR, El Hadri H, Tan J, Hackley VA, MacCrehan WA. High separation efficiency of gold nanomaterials of different aspect ratio and size using capillary transient isotachophoresis. J Chromatogr A 2019; 1598:216-222. [PMID: 30948041 DOI: 10.1016/j.chroma.2019.03.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 03/17/2019] [Accepted: 03/23/2019] [Indexed: 11/25/2022]
Abstract
Two modes of capillary electrophoresis (CE), capillary zone electrophoresis (CZE) and capillary transient isotachophoresis (ctITP), were compared for the detection and separation of spherical gold nanoparticles (AuNPs) and gold nanorods (AuNRs). The development of ctITP using two different leading ions is described. Overall, when compared to traditional capillary zone electrophoresis (CZE), ctITP resulted in improved peak shape and peak efficiency. Specifically, the number of theoretical plates for AuNR samples increased by a factor of 2-2.5 depending on the choice of leading ion. Further, using ctITP two AuNRs differing by aspect ratio were baseline resolved, whereas the same AuNRs could not be separated using CZE or other techniques like single particle inductively coupled plasma mass spectrometry (spICP-MS) and asymmetric flow field-flow fractionation (AF4). The results of this study demonstrate that ctITP is an efficient on-line technique for the improved detection and separation of gold nanomaterials in CE.
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Affiliation(s)
- Kathryn R Riley
- National Institute of Standards and Technology, Material Measurement Laboratory - Chemical Sciences Division, 100 Bureau Drive, Gaithersburg, MD, 20899, USA.
| | - Hind El Hadri
- National Institute of Standards and Technology, Material Measurement Laboratory - Materials Measurement Science Division, 100 Bureau Drive, Gaithersburg, MD, 20899, USA
| | - Jiaojie Tan
- National Institute of Standards and Technology, Material Measurement Laboratory - Materials Measurement Science Division, 100 Bureau Drive, Gaithersburg, MD, 20899, USA
| | - Vincent A Hackley
- National Institute of Standards and Technology, Material Measurement Laboratory - Materials Measurement Science Division, 100 Bureau Drive, Gaithersburg, MD, 20899, USA
| | - William A MacCrehan
- National Institute of Standards and Technology, Material Measurement Laboratory - Chemical Sciences Division, 100 Bureau Drive, Gaithersburg, MD, 20899, USA
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8
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Konop M, Kłodzińska E, Borowiec J, Laskowska AK, Czuwara J, Konieczka P, Cieślik B, Waraksa E, Rudnicka L. Application of micellar electrokinetic chromatography for detection of silver nanoparticles released from wound dressing. Electrophoresis 2019; 40:1565-1572. [PMID: 30848499 DOI: 10.1002/elps.201900020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 11/07/2022]
Abstract
The recent emergence of nanotechnology has provided a new therapeutic modality in case of silver nanoparticles. Dressings containing silver form the basis for the treatment of burns and wounds, either acute or chronic ones. The aim of the study was to examine silver release from the different wound dressings: commercially available (Atrauman Ag, Aquacel Ag) and experimental (FKDP-AgNPs) using MEKC. In order to characterize prepared keratin based wound dressing before and after its modification with AgNPs, a compositional analysis was conducted using energy dispersive X-ray spectroscopy. Nanosilver toxicity was evaluated with the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4 sulfophenyl)-2H-tetrazolium test. Silver release from wound dressings was assessed using MEKC. The best separation was observed for MEKC in 20 mM borate buffer at pH 9 with 20 mM SDS addition. In vitro studies showed silver at higher concentration than 10 ppm exerted a toxic effect on fibroblasts isolated from diabetic mice versus. NIH/3T3 and BJ cell lines (p < 0.05). We observed silver was released more gradually from experimental FKDP-AgNPs wound dressing, in compare to commercially available wound dressings. The fast and low-cost method utilizing MEKC can be used in clinical practice to detect silver release from the wound dressings.
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Affiliation(s)
- Marek Konop
- Department of Experimental Physiology and Pathophysiology, Medical University of Warsaw, Warsaw, Poland.,Department of Dermatology, Medical University of Warsaw, Warsaw, Poland.,Department of Neuropeptides, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Ewa Kłodzińska
- Department of Analytical Chemistry and Instrumental Analysis, Institute of Sport - National Research Institute, Warsaw, Poland
| | - Joanna Borowiec
- College of Physical Science and Technology, and Sino-British Materials Research, Institute, Sichuan University, Chengdu, P. R. China
| | - Anna Katarzyna Laskowska
- Department of Neuropeptides, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Joanna Czuwara
- Department of Dermatology, Medical University of Warsaw, Warsaw, Poland
| | - Piotr Konieczka
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Bartłomiej Cieślik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Emilia Waraksa
- Department of Analytical Chemistry and Instrumental Analysis, Institute of Sport - National Research Institute, Warsaw, Poland
| | - Lidia Rudnicka
- Department of Dermatology, Medical University of Warsaw, Warsaw, Poland.,Department of Neuropeptides, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
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9
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Tsagkaris AS, Tzegkas SG, Danezis GP. Nanomaterials in food packaging: state of the art and analysis. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2018; 55:2862-2870. [PMID: 30065395 PMCID: PMC6046014 DOI: 10.1007/s13197-018-3266-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/17/2018] [Accepted: 05/28/2018] [Indexed: 12/19/2022]
Abstract
It is less than 20 years since nanotechnology found applications in food packaging. The new packaging materials have featured various improved characteristics such as antimicrobial activity and active packaging. However, there is a great controversy about the production cost, safety and suitability of nanocomposite materials to come in contact with foodstuffs. To this end, we critically summarize the literature in order to provide the overview of the current status in the field. A scientometric evaluation is presented for the first time in order to illustrate the state of the art. The USA and the Asian countries are the leaders, while the EU countries follow. Additionally, as the analysis of nanomaterials in food matrices is still in early stage, there is an emerging demand to review the analytical techniques which are capable for the monitoring of nanomaterials. Microscopy, spectroscopy, separation and mass spectrometry techniques show advantages and drawbacks which are discussed. FFF-ICP-MS and sp-ICP-MS have the greatest potential for the detection of inorganic nanoparticles in food. In conclusion, the difficulty of analyzing nanoparticles is increased by the lack of standard solutions, reference materials, standard methods and the limited number of available inter-laboratory proficiency tests.
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Affiliation(s)
- Aristeidis S. Tsagkaris
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Athens, Greece
- Laboratory of Chemistry, Agricultural University of Athens, Athens, Greece
| | - Spyros G. Tzegkas
- Laboratory of Chemistry, Agricultural University of Athens, Athens, Greece
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10
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Chetwynd AJ, Guggenheim EJ, Briffa SM, Thorn JA, Lynch I, Valsami-Jones E. Current Application of Capillary Electrophoresis in Nanomaterial Characterisation and Its Potential to Characterise the Protein and Small Molecule Corona. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E99. [PMID: 29439415 PMCID: PMC5853730 DOI: 10.3390/nano8020099] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 01/22/2018] [Accepted: 01/30/2018] [Indexed: 12/11/2022]
Abstract
Due to the increasing use and production of nanomaterials (NMs), the ability to characterise their physical/chemical properties quickly and reliably has never been so important. Proper characterisation allows a thorough understanding of the material and its stability, and is critical to establishing dose-response curves to ascertain risks to human and environmental health. Traditionally, methods such as Transmission Electron Microscopy (TEM), Field Flow Fractionation (FFF) and Dynamic Light Scattering (DLS) have been favoured for size characterisation, due to their wide-availability and well-established protocols. Capillary Electrophoresis (CE) offers a faster and more cost-effective solution for complex dispersions including polydisperse or non-spherical NMs. CE has been used to rapidly separate NMs of varying sizes, shapes, surface modifications and compositions. This review will discuss the literature surrounding the CE separation techniques, detection and NM characteristics used for the analysis of a wide range of NMs. The potential of combining CE with mass spectrometry (CE-MS) will also be explored to further expand the characterisation of NMs, including the layer of biomolecules adsorbed to the surface of NMs in biological or environmental compartments, termed the acquired biomolecule corona. CE offers the opportunity to uncover new/poorly characterised low abundance and polar protein classes due to the high ionisation efficiency of CE-MS. Furthermore, the possibility of using CE-MS to characterise the poorly researched small molecule interactions within the NM corona is discussed.
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Affiliation(s)
- Andrew J. Chetwynd
- AB Sciex UK Ltd., Phoenix House, Lakeside Drive, Warrington, Cheshire WA1 1RX, UK;
| | - Emily J. Guggenheim
- School of Geography Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (E.J.G.); (S.M.B.); (E.V.-J.)
| | - Sophie M. Briffa
- School of Geography Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (E.J.G.); (S.M.B.); (E.V.-J.)
| | - James A. Thorn
- AB Sciex UK Ltd., Phoenix House, Lakeside Drive, Warrington, Cheshire WA1 1RX, UK;
| | - Iseult Lynch
- School of Geography Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (E.J.G.); (S.M.B.); (E.V.-J.)
| | - Eugenia Valsami-Jones
- School of Geography Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (E.J.G.); (S.M.B.); (E.V.-J.)
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11
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Adam V, Vaculovicova M. Capillary electrophoresis and nanomaterials - Part I: Capillary electrophoresis of nanomaterials. Electrophoresis 2017; 38:2389-2404. [DOI: 10.1002/elps.201700097] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 06/02/2017] [Accepted: 06/22/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Vojtech Adam
- Department of Chemistry and Biochemistry; Mendel University in Brno; Brno Czech Republic
- Central European Institute of Technology; Brno University of Technology; Brno Czech Republic
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry; Mendel University in Brno; Brno Czech Republic
- Central European Institute of Technology; Brno University of Technology; Brno Czech Republic
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12
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Mozhayeva D, Strenge I, Engelhard C. Implementation of Online Preconcentration and Microsecond Time Resolution to Capillary Electrophoresis Single Particle Inductively Coupled Plasma Mass Spectrometry (CE-SP-ICP-MS) and Its Application in Silver Nanoparticle Analysis. Anal Chem 2017; 89:7152-7159. [DOI: 10.1021/acs.analchem.7b01185] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Darya Mozhayeva
- University of Siegen, Department of Chemistry
and Biology, Adolf-Reichwein-Straße,
2, D-57076 Siegen, Germany
| | - Ingo Strenge
- University of Siegen, Department of Chemistry
and Biology, Adolf-Reichwein-Straße,
2, D-57076 Siegen, Germany
| | - Carsten Engelhard
- University of Siegen, Department of Chemistry
and Biology, Adolf-Reichwein-Straße,
2, D-57076 Siegen, Germany
- Center
of Micro- and Nanochemistry and Engineering, University of Siegen, Adolf-Reichwein-Str. 2, D-57076 Siegen, Germany
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13
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Baron D, Cacho C, Petr J. Electrokinetic preconcentration of magnetite core – carboxylic shell nanoparticles by capillary electrophoresis. J Chromatogr A 2017; 1499:217-221. [DOI: 10.1016/j.chroma.2017.03.079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 12/18/2022]
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14
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Baron D, Dolanská P, Medříková Z, Zbořil R, Petr J. Online stacking of carboxylated magnetite core-shell nanoparticles in capillary electrophoresis. J Sep Sci 2017; 40:2482-2487. [DOI: 10.1002/jssc.201601435] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/20/2017] [Accepted: 03/20/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel Baron
- Regional Centre of Advanced Technologies and Materials; Department of Analytical Chemistry; Faculty of Science, Palacký University in Olomouc; Olomouc Czech Republic
| | - Petra Dolanská
- Regional Centre of Advanced Technologies and Materials; Department of Analytical Chemistry; Faculty of Science, Palacký University in Olomouc; Olomouc Czech Republic
| | - Zdenka Medříková
- Regional Centre of Advanced Technologies and Materials; Department of Physical Chemistry; Faculty of Science, Palacký University in Olomouc; Olomouc Czech Republic
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials; Department of Physical Chemistry; Faculty of Science, Palacký University in Olomouc; Olomouc Czech Republic
| | - Jan Petr
- Regional Centre of Advanced Technologies and Materials; Department of Analytical Chemistry; Faculty of Science, Palacký University in Olomouc; Olomouc Czech Republic
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15
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Ciriello R, Iallorenzi PT, Laurita A, Guerrieri A. Improved separation and size characterization of gold nanoparticles through a novel capillary zone electrophoresis method using poly(sodium4-styrenesulfonate) as stabiliser and a stepwise field strength gradient. Electrophoresis 2017; 38:922-929. [DOI: 10.1002/elps.201600478] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/25/2016] [Accepted: 12/01/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Rosanna Ciriello
- Dipartimento di Scienze; Università degli Studi della Basilicata; Potenza Italy
| | | | - Alessandro Laurita
- Dipartimento di Scienze; Università degli Studi della Basilicata; Potenza Italy
| | - Antonio Guerrieri
- Dipartimento di Scienze; Università degli Studi della Basilicata; Potenza Italy
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16
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Electrosteric stabilization of colloidal TiO2 nanoparticles with DNA and polyethylene glycol for selective enhancement of UV detection sensitivity in capillary electrophoresis analysis. Anal Bioanal Chem 2016; 409:1857-1868. [DOI: 10.1007/s00216-016-0130-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/25/2016] [Accepted: 12/02/2016] [Indexed: 11/26/2022]
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17
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Park CM, Chu KH, Her N, Jang M, Baalousha M, Heo J, Yoon Y. Occurrence and Removal of Engineered Nanoparticles in Drinking Water Treatment and Wastewater Treatment Processes. SEPARATION AND PURIFICATION REVIEWS 2016. [DOI: 10.1080/15422119.2016.1260588] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Chang Min Park
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina, USA
| | - Kyoung Hoon Chu
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina, USA
| | - Namguk Her
- Department of Civil and Environmental Engineering, Korea Army Academy at Young-Cheon, Gyeongbuk, Korea
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, Seoul, Korea
| | - Mohammed Baalousha
- Department of Environmental Health Sciences, Center for Environmental Nanoscience and Risk, University of South Carolina, Columbia, South Carolina, USA
| | - Jiyong Heo
- Department of Civil and Environmental Engineering, Korea Army Academy at Young-Cheon, Gyeongbuk, Korea
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina, USA
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18
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Using capillary electrophoresis to characterize polymeric particles. J Chromatogr A 2016; 1463:169-75. [PMID: 27543386 DOI: 10.1016/j.chroma.2016.08.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 08/08/2016] [Accepted: 08/08/2016] [Indexed: 01/16/2023]
Abstract
Capillary electrophoresis (CE) was used for the characterization of a variety of polymeric micron and sub-micron particles based on size, surface functionality, and binding properties. First, a robust capillary zone electrophoresis (CZE) method was developed for the baseline separation and quantitation of commercially available polystyrene particles with various surface modifications (including amino, carboxylate, and sulfate functional groups) and various sizes (0.2, 0.5, 1.0, and 3.0μm). The separation of DNA-templated polyacrylamide particles from untemplated particles (as used for the Ion Torrent Personal Genome Machine) was demonstrated. Finally, using the 29-base thrombin aptamer and thrombin protein as a model system, a study was undertaken to determine dissociation constants for the aptamer and protein in free solution and when the aptamer was conjugated to a particle, with the goal of better understanding how the use of solid substrates, like particles, affects selection and binding processes. Dissociation constants were determined and were found to be approximately 5-fold higher for the aptamer conjugated to a particle relative to that in free solution.
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Trapiella-Alfonso L, d’Orlyé F, Varenne A. Recent advances in the development of capillary electrophoresis methodologies for optimizing, controlling, and characterizing the synthesis, functionalization, and physicochemical, properties of nanoparticles. Anal Bioanal Chem 2016; 408:2669-75. [DOI: 10.1007/s00216-015-9236-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/26/2015] [Accepted: 11/30/2015] [Indexed: 12/28/2022]
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20
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Tantra R, Bouwmeester H, Bolea E, Rey-Castro C, David CA, Dogné JM, Jarman J, Laborda F, Laloy J, Robinson KN, Undas AK, van der Zande M. Suitability of analytical methods to measure solubility for the purpose of nanoregulation. Nanotoxicology 2015; 10:173-84. [DOI: 10.3109/17435390.2015.1038661] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Bosi V, Sarti E, Navacchia ML, Perrone D, Pasti L, Cavazzini A, Capobianco ML. Gold-nanoparticle extraction and reversed-electrode-polarity stacking mode combined to enhance capillary electrophoresis sensitivity for conjugated nucleosides and oligonucleotides containing thioether linkers. Anal Bioanal Chem 2015; 407:5405-15. [PMID: 25956598 DOI: 10.1007/s00216-015-8702-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/02/2015] [Accepted: 04/13/2015] [Indexed: 01/22/2023]
Abstract
We present a capillary electrophoresis method for determining two different C8-conjugated deoxyadenosines, and for oligonucleotides containing them, in which a psoralen or an acridine molecule is bonded to the base via a short alkyl chain containing sulfur ethers at both ends. The sensitivity of the micellar electrokinetic chromatography (MEKC) method was increased by using two preconcentration techniques, micro solid-phase extraction (μSPE) followed by reversed-electrode-polarity stacking mode (REPSM). Variables that affect the efficiency of the extraction in μSPE and preconcentration by REPSM, including the type and volume of extraction nanoparticle, concentration, and injection time, were investigated. Under the optimum conditions, enrichment factors obtained were in the range 360-400. The limits of detection (LODs) at a signal-to-noise ratio of 3 ranged from 2 to 5 nmol L(-1). The relative recoveries of labelled adenosines from water samples were 95-103%. The proposed method provided high enrichment factors and good precision and accuracy with a short analysis time. On the basis of the advantages of simplicity, high selectivity, high sensitivity, and good reproducibility, the proposed method may have great potential for biochemical applications.
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Affiliation(s)
- Valentina Bosi
- Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, via L. Borsari 46, 44121, Ferrara, Italy
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Cacho C, Marková Z, Ševčík J, Zbořil R, Petr J. Study of behavior of carboxylic magnetite core shell nanoparticles on a pH boundary. J Chromatogr A 2014; 1364:59-63. [DOI: 10.1016/j.chroma.2014.08.090] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 08/16/2014] [Accepted: 08/27/2014] [Indexed: 11/15/2022]
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23
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López-Lorente ÁI, Soriano ML, Valcárcel M. Analysis of citrate-capped gold and silver nanoparticles by thiol ligand exchange capillary electrophoresis. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1218-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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24
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Sang F, Huang X, Ren J. Characterization and separation of semiconductor quantum dots and their conjugates by capillary electrophoresis. Electrophoresis 2014; 35:793-803. [DOI: 10.1002/elps.201300528] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/03/2013] [Accepted: 12/03/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Fuming Sang
- School of Marine Science and Technology; Harbin Institute of Technology; Weihai P. R. China
| | - Xiangyi Huang
- College of Chemistry & Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai P. R. China
| | - Jicun Ren
- College of Chemistry & Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai P. R. China
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Mbundi L, Gallar-Ayala H, Khan MR, Barber JL, Losada S, Busquets R. Advances in the Analysis of Challenging Food Contaminants. ADVANCES IN MOLECULAR TOXICOLOGY 2014. [DOI: 10.1016/b978-0-444-63406-1.00002-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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26
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López-Lorente ÁI, Valcárcel M. Separation Techniques of Gold Nanoparticles. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-444-63285-2.00009-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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27
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Gmoshinski IV, Khotimchenko SA, Popov VO, Dzantiev BB, Zherdev AV, Demin VF, Buzulukov YP. Nanomaterials and nanotechnologies: methods of analysis and control. RUSSIAN CHEMICAL REVIEWS 2013. [DOI: 10.1070/rc2013v082n01abeh004329] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zänker H, Schierz A. Engineered nanoparticles and their identification among natural nanoparticles. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2012; 5:107-132. [PMID: 22482788 DOI: 10.1146/annurev-anchem-062011-143130] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The more nanotechnology develops, the more likely the release of engineered nanoparticles into the environment becomes. Due to a huge excess of natural nanoparticles, the identification and quantification of engineered nanoparticles pose a big challenge to analysts. Moreover, identification in a qualitative sense and quantification by mass concentration alone are not sufficient, because the potential environmental hazard arising from engineered nanoparticles is controlled by many other properties of the particles. We discuss the most important methods of fractionation and detection of both natural and engineered nanoparticles, with a focus on the chemical nature of the particles, particle concentration, and particle size. Analyses should not rely on only one method; instead, several complementary methods should, if possible, be used. Coupled techniques should be further developed and increasingly applied. Dedicated techniques that are tailored to the search for a particular sort of engineered nanoparticles are more promising than universal approaches that search for any engineered nanoparticles.
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Affiliation(s)
- H Zänker
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany.
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29
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Liu JF, Yu SJ, Yin YG, Chao JB. Methods for separation, identification, characterization and quantification of silver nanoparticles. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2011.10.010] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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30
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Analysis of Nanoparticles Based on Electrophoretic Separations. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/b978-0-444-56328-6.00002-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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31
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Aleksenko SS, Shmykov AY, Oszwałdowski S, Timerbaev AR. Interactions of tumour-targeting nanoparticles with proteins: potential of using capillary electrophoresis as a direct probe. Metallomics 2012; 4:1141-8. [DOI: 10.1039/c2mt20141k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Characterization of CdSe nanocrystals coated with amphiphiles. A capillary electrophoresis study. Mikrochim Acta 2011; 176:345-358. [PMID: 22347727 PMCID: PMC3267930 DOI: 10.1007/s00604-011-0727-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Accepted: 10/13/2011] [Indexed: 12/11/2022]
Abstract
We have synthesized CdSe nanocrystals (NCs) possessing a trioctylphosphine surface passivation layer and modified with amphiphilic molecules to form a surface bilayer. The NCs covered with single amphiphiles are not stable in aqueous solution, but a mixed amphiphilic system is shown to provide stability in solution over several months. The solutions of the modified NCs were characterized by UV-Vis absorbance, photoluminescence, and transmission electron microscopy. An electrophoretic study revealed two operational modes. The first relies on the enrichment of NCs using a micellar plug as a tool. The accumulation of NCs at the plug-electrolyte buffer interface results in a sharp peak. By controlling the electrophoretic conditions, nanocrystals were forced to exit a micellar plug into an electrolyte buffer. We conclude that a system consisting of modified nanocrystals and a micellar plug can act as a mixed pseudomicellar system, where modified nanocrystals play the role of pseudomicelles. Electrophoretic focusing of amphiphile coated CdSe nanocrystals using a micellar plug. ![]()
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Abstract
AbstractThe CdSe quantum dots (QDs) with bidentate ligands: a-diimine (NN) and dihydrolipoic acid (DHLA) were synthesized and characterized by UV-Vis, particle size and capillary electrophoretic techniques. Two systems were analyzed: CdSe with one ligand (CdSe/ligand) and CdSe with two different ligands (CdSe//ligand1/ligand2), where ligand = α-diimine or DHLA. Hydrodynamic features of functionalized QDs were characterized by zone capillary electrophoretic (CZE), and particle size techniques and these methods were consistent. It was established that CZE, micellar (MEKC) and microemulsion (MEEKC) modes were suitable for separating charged CdSe QDs and that no peaks were obtained for QDs passivated with electrically neutral ligands. For CdSe QDs with neutral (NN) ligands, a preconcentration method with the use of a micellar plug was introduced for visualizing these QDs. A sharp peak representing neutral QDs was obtained within the zone of micellar plug of a non-ionic surfactant, Here, a ligand character used for CdSe modification and the type of the electrophoretic method applied were the determining factors for the QDs peak visualization. Moreover, examples of visualization of charged and neutral QDs on the same run were presented, and for this purpose, dual mechanism (separation/preconcentration) was proposed.
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34
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Liu FK. Extremely highly efficient on-line concentration and separation of gold nanoparticles using the reversed electrode polarity stacking mode and surfactant-modified capillary electrophoresis. Anal Chim Acta 2011; 694:167-73. [DOI: 10.1016/j.aca.2011.03.056] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 03/24/2011] [Accepted: 03/28/2011] [Indexed: 11/24/2022]
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35
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Fractionation and characterization of nano- and microparticles in liquid media. Anal Bioanal Chem 2011; 400:1787-804. [DOI: 10.1007/s00216-011-4704-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 01/17/2011] [Accepted: 01/18/2011] [Indexed: 11/26/2022]
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36
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Capillary electrophoretic separation of nanoparticles. Anal Bioanal Chem 2011; 399:2831-42. [PMID: 21267714 PMCID: PMC3043243 DOI: 10.1007/s00216-011-4650-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Revised: 11/22/2010] [Accepted: 01/02/2011] [Indexed: 11/02/2022]
Abstract
In the present work, CdSe nanocrystals (NCs) synthesized with a trioctylphosphine surface passivation layer were modified using amphiphilic molecules to form a surface bilayer capable of providing stable NCs aqueous solutions. Such modified nanocrystals were used as a test solute in order to analyze new electrophoretic phenomena, by applying a micellar plug as a separation tool for discriminating nanocrystals between micellar and micelle-free zones during electrophoresis. The distribution of NCs between both zones depended on the affinity of nanocrystals towards the micellar zone, and this relies on the kind of surface ligands attached to the NCs, as well as electrophoretic conditions applied. In this case, the NCs that migrated within a micellar zone can be focused using a preconcentration mechanism. By modifying electrophoretic conditions, NCs were forced to migrate outside the micellar zone in the form of a typical CZE peak. In this situation, a two-order difference in separation efficiencies, in terms of theoretical plates, was observed between focused NCs (N ~ 10(7)) and a typical CZE peak for NCs (N ~ 10(5)). By applying the amino-functionalized NCs the preconcentration of NCs, using a micellar plug, was examined, with the conclusion that preconcentration efficiency, in terms of the enhancement factor for peak height (SEF(height)) can be, at least 20. The distribution effect was applied to separate CdSe/ZnS NCs encapsulated in silica, as well as surface-modified with DNA, which allows the estimation of the yield of conjugation of biologically active molecules to a particle surface.
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37
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38
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López-Lorente A, Simonet B, Valcárcel M. Electrophoretic methods for the analysis of nanoparticles. Trends Analyt Chem 2011. [DOI: 10.1016/j.trac.2010.10.006] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Wu CS, Liu FK, Ko FH. Potential role of gold nanoparticles for improved analytical methods: an introduction to characterizations and applications. Anal Bioanal Chem 2010; 399:103-18. [DOI: 10.1007/s00216-010-4094-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 08/01/2010] [Accepted: 08/03/2010] [Indexed: 01/13/2023]
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40
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Abstract
AbstractWe have developed a capillary electrophoresis method to characterize the QD surface ligand interactions with various surfactant systems. The method was demonstrated with 2–5 nm CdSe nanoparticles surface-passivated with trioctylphosphine oxide (TOPO). Water solubility was accomplished by surfactant-assisted phase transfer via an oil-in-water microemulsion using either cationic, anionic, or non-ionic surfactants. Interaction between the QD surface ligand (TOPO) and the alkyl chain of the surfactant molecule produces a complex and dynamic surface coating that can be characterized through manipulation of CE separation buffer composition and capillary surface modification. Additional characterization of the QD surface ligand interactions with surfactants was accomplished by UV-VIS spectroscopy, photoluminescence, and TEM. It is anticipated that studies such as these will elucidate the dynamics of QD surface ligand modifications for use in sensors.
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41
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Pyell U. Characterization of nanoparticles by capillary electromigration separation techniques. Electrophoresis 2010; 31:814-31. [DOI: 10.1002/elps.200900555] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Timerbaev AR. Inorganic species analysis by CE â An overview for 2007â2008. Electrophoresis 2010; 31:192-204. [DOI: 10.1002/elps.200900397] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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43
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LIU FK. Monitoring the On-line Concentration and Separation of Gold Nanoparticles Using the Reversed Electrode Polarity Stacking Mode and Micellar Electrokinetic Chromatography. ANAL SCI 2010; 26:1145-50. [DOI: 10.2116/analsci.26.1145] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Fu-Ken LIU
- Department of Applied Chemistry, National University of Kaohsiung
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44
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Liu FK. Analysis and applications of nanoparticles in the separation sciences: A case of gold nanoparticles. J Chromatogr A 2009; 1216:9034-47. [DOI: 10.1016/j.chroma.2009.07.026] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Revised: 06/23/2009] [Accepted: 07/14/2009] [Indexed: 01/10/2023]
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45
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Abstract
Sample stacking techniques remain an important tool for enhancement of the selectivity and sensitivity of analyses in contemporary CZE. This contribution reviews new knowledge on this topic published since 2006. It is organized according to the operational principles used, which include concentration adjustment, application of a pH step, MEKC and sweeping, and transient ITP. Techniques combining several of these principles and comparative studies are also included.
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Affiliation(s)
- Zdena Malá
- Institute of Analytical Chemistry of the ASCR, Brno, Czech Republic
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46
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47
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Using micellar electrokinetic chromatography for the highly efficient preconcentration and separation of gold nanoparticles. J Chromatogr A 2009; 1216:2554-9. [DOI: 10.1016/j.chroma.2009.01.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2008] [Revised: 12/19/2008] [Accepted: 01/05/2009] [Indexed: 11/19/2022]
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48
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Zhang Y, Shuang S, Dong C, Lo CK, Paau MC, Choi MMF. Application of HPLC and MALDI-TOF MS for Studying As-Synthesized Ligand-Protected Gold Nanoclusters Products. Anal Chem 2009; 81:1676-85. [DOI: 10.1021/ac8026349] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yan Zhang
- Research Center of Environmental Science and Engineering, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, People’s Republic of China, and Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, People’s Republic of China
| | - Shaomin Shuang
- Research Center of Environmental Science and Engineering, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, People’s Republic of China, and Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, People’s Republic of China
| | - Chuan Dong
- Research Center of Environmental Science and Engineering, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, People’s Republic of China, and Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, People’s Republic of China
| | - Chung Keung Lo
- Research Center of Environmental Science and Engineering, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, People’s Republic of China, and Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, People’s Republic of China
| | - Man Chin Paau
- Research Center of Environmental Science and Engineering, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, People’s Republic of China, and Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, People’s Republic of China
| | - Martin M. F. Choi
- Research Center of Environmental Science and Engineering, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, People’s Republic of China, and Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, People’s Republic of China
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49
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Ecotoxicity and analysis of nanomaterials in the aquatic environment. Anal Bioanal Chem 2008; 393:81-95. [DOI: 10.1007/s00216-008-2458-1] [Citation(s) in RCA: 357] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 08/05/2008] [Accepted: 10/02/2008] [Indexed: 11/25/2022]
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50
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Tiede K, Boxall AB, Tear SP, Lewis J, David H, Hassellöv M. Detection and characterization of engineered nanoparticles in food and the environment. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2008; 25:795-821. [DOI: 10.1080/02652030802007553] [Citation(s) in RCA: 350] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Karen Tiede
- a Central Science Laboratory , Sand Hutton, York YO41 1LZ, UK
- e Environment Department , University of York , Heslington, York, Y010 5DD, UK
| | - Alistair B.A. Boxall
- a Central Science Laboratory , Sand Hutton, York YO41 1LZ, UK
- e Environment Department , University of York , Heslington, York, Y010 5DD, UK
| | | | - John Lewis
- a Central Science Laboratory , Sand Hutton, York YO41 1LZ, UK
| | - Helen David
- c Unilever Colworth, Safety and Environmental Assurance Centre , Bedford, UK
| | - Martin Hassellöv
- d Department of Chemistry , University of Gothenburg , Gothenburg, Sweden
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