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Minaberry YS, Medina LS, Cataneo D, Stripeikis J, Tudino M. Bifunctional magnetic nanoparticles with ion imprinting for improving the flow through determination of ultratraces of Cd(II) using magnetic preconcentration. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4178-4186. [PMID: 38874550 DOI: 10.1039/d3ay02047a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
A novel bifunctional magnetic sorbent with mercapto and amino groups and ion imprinting (MBII) was synthesized using a one-step aqueous sol-gel process for preconcentration and determination of Cd(II) ions. MBII was employed as a microcolumn (MC) filler in a flow-through system coupled to GFAAS. The magnetic properties of the solid allowed microcolumn magnetic solid-phase extraction (MCMSPE) to be performed by simply including a single circular magnet around the MC. This assembly enabled complete attachment of the solid to the MC wall leaving a central void to facilitate higher sample flow rates without blockage or material loss. For comparison, a bifunctional magnetic solid without imprinting (MBNI) was also synthesized and evaluated. Both MBII and MBNI were characterized by FTIR, SEM, EDX, BET and magnetization measurements. The results showed the preservation of the magnetic core, its superparamagnetism and the functional groups in the solid. Batch studies revealed a maximum adsorption capacity for both materials at pH around 6 with equilibrium reached within 5 minutes. The advantages were reflected in the maximum adsorption capacity of MBII, which was found to be 2.5 times greater than that of MBNI. Both adsorbents were compared as MC fillers for dynamic preconcentration in MCMSPE systems. Under optimized conditions, MBNI showed a PCF of 125 and MBII of 250. The higher selectivity of MBII was corroborated by interfering ion studies. The analytical performance parameters for the proposed method using MBII as an adsorbent showed a detection limit of 0.05 ng L-1, a linear range of 2.0-80 ng L-1, an RSD% of 2.2 (n = 7; 20 ng L-1) and a lifetime of more than 300 preconcentration-elution cycles without loss of sensitivity or need for refilling. The method was successfully applied to the determination of trace Cd(II) in osmosis, lake and tap water with recoveries ranging from 98 to 105%. Comparison of these results with those of similar reported methods showed a considerable improvement primarily attributed to the combined effect of MBII's higher retention capacity and its magnetic properties that allowed higher sample flow rates and, thus, enhanced figures of merit.
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Affiliation(s)
- Yanina Susana Minaberry
- DQIAQF, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, Ciudad de Buenos Aires, C1428EHA, Argentina.
- Instituto Tecnológico de Buenos Aires, ITBA, Iguazú 341, Ciudad de Buenos Aires, Argentina
| | - Leila Saleh Medina
- DQIAQF, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, Ciudad de Buenos Aires, C1428EHA, Argentina.
- INQUIMAE, Instituto de Química Inorgánica Analítica y Química Física, Ciudad Universitaria Pab. II, Ciudad de Buenos Aires, C1428EHA, Argentina
| | - Daiana Cataneo
- DQIAQF, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, Ciudad de Buenos Aires, C1428EHA, Argentina.
| | - Jorge Stripeikis
- Instituto Tecnológico de Buenos Aires, ITBA, Iguazú 341, Ciudad de Buenos Aires, Argentina
| | - Mabel Tudino
- DQIAQF, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, Ciudad de Buenos Aires, C1428EHA, Argentina.
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Trojanowicz M. Impact of nanotechnology on progress of flow methods in chemical analysis: A review. Anal Chim Acta 2023; 1276:341643. [PMID: 37573121 DOI: 10.1016/j.aca.2023.341643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 08/14/2023]
Abstract
In evolution of instrumentation for analytical chemistry as crucial technological breakthroughs should be considered a common introduction of electronics with all its progress in integration, and then microprocessors which was followed by a widespread computerization. It is seems that a similar role can be attributed to the introduction of various elements of modern nanotechnology, observed with a fast progress since beginning of this century. It concerns all areas of the applications of analytical chemistry, including also progress in flow analysis, which are being developed since the middle of 20th century. Obviously, it should not be omitted the developed earlier and analytically applied planar structures like lipid membranes or self-assembled monolayers They had essential impact prior to discoveries of numerous extraordinary nanoparticles such as fullerenes, carbon nanotubes and graphene, or nanocrystalline semiconductors (quantum dots). Mostly, due to catalytic effects, significantly developed surface and the possibility of easy functionalization, their application in various stages of flow analytical procedures can significantly improve them. The application of new nanomaterials may be used for the development of new detection methods for flow analytical systems in macro-flow setups as well as in microfluidics and lateral flow immunoassay tests. It is also advantageous that quick flow conditions of measurements may be helpful in preventing unfavorable agglomeration of nanoparticles. A vast literature published already on this subject (e.g. almost 1000 papers about carbon nanotubes and flow-injection analytical systems) implies that for this reviews it was necessary to make an arbitrary selection of reported examples of this trend, focused mainly on achievements reported in the recent decade.
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Affiliation(s)
- Marek Trojanowicz
- Laboratory of Nuclear Analytical Techniques, Institute of Nuclear Chemistry and Technology, Warsaw, Poland; Department of Chemistry, University of Warsaw, Poland.
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Ghorbanzadeh S, Naghib SM, Sadr A, Molaabasi F, Zhang W. A customizable cost-effective design for printed circuit board-based nanolayered gold screen-printed electrode: From fabrication to bioapplications. Front Bioeng Biotechnol 2022; 10:1036224. [DOI: 10.3389/fbioe.2022.1036224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022] Open
Abstract
Screen-printed electrodes (SPEs) are promising candidates for fabricating biosensing platforms in the laboratory and industry due to the various advantages they involve. The primary method for fabricating SPEs is 2D printing. However, commercial SPEs have some limitations due to the specific ports and connections they require, inflexible design, high prices, and decreased efficiency after a short time. This article introduces high performance, feasible, and cost-effective gold SPEs based on the combination of printed circuit board substrate (PCBs) and sputtering methods for electrochemical biosensing platforms. First, we discuss a general gold SPE development procedure that helps researchers to develop specific designs. The final developed version of SPEs was characterized in the second step, showing positive performance in electrochemical parameters because of the optimization of design and fabrication steps. In the study’s final phase, SPEs were used to fabricate a simple platform for breast cancer cell detection as a proof of concept without using any linker or labeling step. The designed immunosensor is very simple and cost-effective, showing a linear calibration curve in the range of 10 − 2× 102 cells mL−1 (R2 = 0.985, S/N = 3). This research can be used as a reference for future studies in SPEs-based biosensors because of the flexibility of its design and the accessibility of the manufacturing equipment required.
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Celio L, Ottaviani M, Cancelliere R, Di Tinno A, Panjan P, Sesay AM, Micheli L. Microfluidic Flow Injection Immunoassay System for Algal Toxins Determination: A Case of Study. Front Chem 2021; 9:626630. [PMID: 33748075 PMCID: PMC7974544 DOI: 10.3389/fchem.2021.626630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/04/2021] [Indexed: 11/17/2022] Open
Abstract
A novel flow injection microfluidic immunoassay system for continuous monitoring of saxitoxin, a lethal biotoxin, in seawater samples is presented in this article. The system consists of a preimmobilized G protein immunoaffinity column connected in line with a lab-on-chip setup. The detection of saxitoxin in seawater was carried out in two steps: an offline incubation step (competition reaction) performed between the analyte of interest (saxitoxin or Ag, as standard or seawater sample) and a tracer (an enzyme-conjugated antigen or Ag*) toward a specific polyclonal antibody. Then, the mixture was injected through a “loop” of a few μL using a six-way injection valve into a bioreactor, in line with the valve. The bioreactor consisted of a small glass column, manually filled with resin upon which G protein has been immobilized. When the mixture flowed through the bioreactor, all the antibody-antigen complex, formed during the competition step, is retained by the G protein. The tracer molecules that do not interact with the capture antibody and protein G are eluted out of the column, collected, and mixed with an enzymatic substrate directly within the microfluidic chip, via the use of two peristaltic pumps. When Ag* was present, a color change (absorbance variation, ΔAbs) of the solution is detected at a fixed wavelength (655 nm) by an optical chip docking system and registered by a computer. The amount of saxitoxin, present in the sample (or standard), that generates the variation of the intensity of the color, will be directly proportional to the concentration of the analyte in the analyzed solution. Indeed, the absorbance response increased proportionally to the enzymatic product and to the concentration of saxitoxin in the range of 3.5 × 10–7–2 × 10–5 ng ml−1 with a detection limit of 1 × 10–7 ng ml−1 (RSD% 15, S N−1 equal to 3). The immunoanalytical system has been characterized, optimized, and tested with seawater samples. This analytical approach, combined with the transportable and small-sized instrumentation, allows for easy in situ monitoring of marine water contaminations.
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Affiliation(s)
- Lorenzo Celio
- Departement of Chemical Sciences and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Matteo Ottaviani
- Department of Analytical Chemistry, University of Turin, Turin, Italy
| | - Rocco Cancelliere
- Departement of Chemical Sciences and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Alessio Di Tinno
- Departement of Chemical Sciences and Technologies, University of Rome Tor Vergata, Rome, Italy.,Department of Electrical and Information Engineering, University of Cassino and Southern Lazio, Cassino (FR), Italy
| | - Peter Panjan
- Measurement Technology Research Unit, Oulu University, Kajaani, Finland.,Essi Tech d.o.o., Ljubljana, Slovenia
| | - Adama Marie Sesay
- Measurement Technology Research Unit, Oulu University, Kajaani, Finland.,Wyss Institute of Bioinspired Engineering, Harvard University, Boston, MA, United States
| | - Laura Micheli
- Departement of Chemical Sciences and Technologies, University of Rome Tor Vergata, Rome, Italy
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Renewable column on-line magnetic preconcentration of Cd(II) using Fe3O4 nanoparticles functionalized with l-glutamine for determination by flame atomic absorption spectrometry. Talanta 2021; 222:121519. [DOI: 10.1016/j.talanta.2020.121519] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 02/07/2023]
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Trojanowicz M. Flow Chemistry in Contemporary Chemical Sciences: A Real Variety of Its Applications. Molecules 2020; 25:E1434. [PMID: 32245225 PMCID: PMC7146634 DOI: 10.3390/molecules25061434] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 12/15/2022] Open
Abstract
Flow chemistry is an area of contemporary chemistry exploiting the hydrodynamic conditions of flowing liquids to provide particular environments for chemical reactions. These particular conditions of enhanced and strictly regulated transport of reagents, improved interface contacts, intensification of heat transfer, and safe operation with hazardous chemicals can be utilized in chemical synthesis, both for mechanization and automation of analytical procedures, and for the investigation of the kinetics of ultrafast reactions. Such methods are developed for more than half a century. In the field of chemical synthesis, they are used mostly in pharmaceutical chemistry for efficient syntheses of small amounts of active substances. In analytical chemistry, flow measuring systems are designed for environmental applications and industrial monitoring, as well as medical and pharmaceutical analysis, providing essential enhancement of the yield of analyses and precision of analytical determinations. The main concept of this review is to show the overlapping of development trends in the design of instrumentation and various ways of the utilization of specificity of chemical operations under flow conditions, especially for synthetic and analytical purposes, with a simultaneous presentation of the still rather limited correspondence between these two main areas of flow chemistry.
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Affiliation(s)
- Marek Trojanowicz
- Laboratory of Nuclear Analytical Methods, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03–195 Warsaw, Poland;
- Department of Chemistry, University of Warsaw, Pasteura 1, 02–093 Warsaw, Poland
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Andrade RA, Cunha FA, Andrade SI, Junior PL, Navarro LA, Lyra WS, Pessoa AG, Lima RA, Araujo MCU. A digital capture movie-based robotized Flow-batch luminometer for in-line magnetic nanoparticle solid phase extraction and chemiluminescent measurement. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104387] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Kaewwonglom N, Oliver M, Cocovi-Solberg DJ, Zirngibl K, Knopp D, Jakmunee J, Miró M. Reliable Sensing Platform for Plasmonic Enzyme-Linked Immunosorbent Assays Based on Automatic Flow-Based Methodology. Anal Chem 2019; 91:13260-13267. [DOI: 10.1021/acs.analchem.9b03855] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Natcha Kaewwonglom
- Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Miquel Oliver
- FI-TRACE Group, Department of Chemistry, Faculty of Sciences, University of the Balearic Islands, E-07122 Palma de Mallorca, Illes Balears, Spain
| | - David J. Cocovi-Solberg
- FI-TRACE Group, Department of Chemistry, Faculty of Sciences, University of the Balearic Islands, E-07122 Palma de Mallorca, Illes Balears, Spain
| | - Katharina Zirngibl
- Institute of Hydrochemistry and Chemical Balneology, Chair of Analytical Chemistry and Water Chemistry, Technische Universität München, Marchioninistrasse 17, 81377 München, Germany
| | - Dietmar Knopp
- Institute of Hydrochemistry and Chemical Balneology, Chair of Analytical Chemistry and Water Chemistry, Technische Universität München, Marchioninistrasse 17, 81377 München, Germany
| | - Jaroon Jakmunee
- Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Manuel Miró
- FI-TRACE Group, Department of Chemistry, Faculty of Sciences, University of the Balearic Islands, E-07122 Palma de Mallorca, Illes Balears, Spain
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Aftab S, Kurbanoglu S, Ozcelikay G, Shah A, Ozkan SA. NH
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‐Functionalized Multi Walled Carbon Nanotubes Decorated with ZnO Nanoparticles and Graphene Quantum Dots for Sensitive Assay of Pimozide. ELECTROANAL 2019. [DOI: 10.1002/elan.201800788] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Saima Aftab
- Ankara UniversityFaculty of PharmacyDepartment of Analytical Chemistry Ankara Turkey
- Department of ChemistryQuaid-i-Azam University 45320 Islamabad Pakistan
| | - Sevinc Kurbanoglu
- Ankara UniversityFaculty of PharmacyDepartment of Analytical Chemistry Ankara Turkey
| | - Goksu Ozcelikay
- Ankara UniversityFaculty of PharmacyDepartment of Analytical Chemistry Ankara Turkey
| | - Afzal Shah
- Department of ChemistryQuaid-i-Azam University 45320 Islamabad Pakistan
- University of BahrainCollege of ScienceDepartment of Chemistry Sakhir 32038 Bahrain
| | - Sibel A. Ozkan
- Ankara UniversityFaculty of PharmacyDepartment of Analytical Chemistry Ankara Turkey
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Kurbanoglu S, Unal MA, Ozkan SA. Recent developments on electrochemical flow injection in pharmaceuticals and biologically important compounds. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.217] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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12
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Dias TR, Melchert WR, Kamogawa MY, Rocha FR, Zagatto EA. Fluidized particles in flow analysis: potentialities, limitations and applications. Talanta 2018; 184:325-331. [DOI: 10.1016/j.talanta.2018.02.072] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/09/2018] [Accepted: 02/15/2018] [Indexed: 12/18/2022]
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Shi J, Xu M, Tang Q, Zhao K, Deng A, Li J. Highly sensitive determination of diclofenac based on resin beads and a novel polyclonal antibody by using flow injection chemiluminescence competitive immunoassay. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:1-7. [PMID: 28965083 DOI: 10.1016/j.saa.2017.09.068] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/15/2017] [Accepted: 09/25/2017] [Indexed: 06/07/2023]
Abstract
A novel flow injection chemiluminescence immunoassay for simple, sensitive and low-cost detection of diclofenac was established based on specific binding of antigen and antibody. Carboxylic resin beads used as solid phase carrier materials provided good biocompatibility and large surface-to-volume ratio for modifying more coating antigen. There was a competitive process between the diclofenac in solution and the immobilized coating antigen to react with the limited binding sites of the polyclonal antibody to form the immunocomplex. The second antibody labelled with horseradish peroxidase was introduced into the immunosensor and trapped by captured polyclonal antibody against diclofenac, which could effectively amplify chemiluminescence signals of luminol-PIP-H2O2. Under optimal conditions, the diclofenac could be detected quantitatively. The chemiluminescence intensity decreased linearly with the logarithm of the diclofenac concentration in the range of 0.1-100ngmL-1 with a detection limit of 0.05ngmL-1 at a signal-to-noise ratio of 3. The immunosensor exhibited high sensitivity, specificity and acceptable stability. This easy-operated and cost-effective analytical method could be valuable for the diclofenac determination in real water samples.
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Affiliation(s)
- Jing Shi
- The Key Lab of Health Chemistry & Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering & Materials Science, Soochow University, Suzhou 215123, China
| | - Mingxia Xu
- The Key Lab of Health Chemistry & Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering & Materials Science, Soochow University, Suzhou 215123, China
| | - Qinghui Tang
- Suzhou Industrial Park QingYuan Hong Kong & China Water Co., Ltd., Suzhou 215000, China
| | - Kang Zhao
- The Key Lab of Health Chemistry & Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering & Materials Science, Soochow University, Suzhou 215123, China
| | - Anping Deng
- The Key Lab of Health Chemistry & Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering & Materials Science, Soochow University, Suzhou 215123, China.
| | - Jianguo Li
- The Key Lab of Health Chemistry & Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering & Materials Science, Soochow University, Suzhou 215123, China.
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A robotic magnetic nanoparticle solid phase extraction system coupled to flow-batch analyzer and GFAAS for determination of trace cadmium in edible oils without external pretreatment. Talanta 2018; 178:384-391. [DOI: 10.1016/j.talanta.2017.09.063] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/21/2017] [Accepted: 09/22/2017] [Indexed: 11/19/2022]
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ROCHA FÁBIOR, BATISTA ALEXD, MELCHERT WANESSAR, ZAGATTO ELIASA. Solid-phase extractions in flow analysis. ACTA ACUST UNITED AC 2018; 90:803-824. [DOI: 10.1590/0001-3765201820170513] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/09/2017] [Indexed: 12/20/2022]
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16
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Distler U, Tenzer S. Tools for Pathogen Proteomics: Fishing with Biomimetic Nanosponges. ACS NANO 2017; 11:11768-11772. [PMID: 29154537 DOI: 10.1021/acsnano.7b07363] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The identification of the major virulence factors that drive pathogenicity is critical for gaining insight into the underlying molecular mechanisms of diseases. Although genetic approaches combined with functional analyses have markedly increased the rate of virulence factor discovery, the divergence between genome and proteome can impair the identification of important markers, in particular, of those that act in concert or depend on specific environmental factors. Recently, membrane-coated nanomaterials mimicking source cells of interest have emerged as powerful tools that can be used for improved tumor targeting and as "nanotraps" to capture chemokines and bacterial toxins. In this issue of ACS Nano, Lapek et al. demonstrate that membrane-coated nanosponges in combination with quantitative proteomics can also be used as efficient "fishing devices" for the identification of cell-type-specific virulence factors.
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Affiliation(s)
- Ute Distler
- Institute for Immunology, University Medical Center of the Johannes Gutenberg University Mainz , Langenbeckstr. 1, 55131 Mainz, Germany
| | - Stefan Tenzer
- Institute for Immunology, University Medical Center of the Johannes Gutenberg University Mainz , Langenbeckstr. 1, 55131 Mainz, Germany
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Libansky M, Zima J, Barek J, Reznickova A, Svorcik V, Dejmkova H. Basic electrochemical properties of sputtered gold film electrodes. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.048] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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García-Carmona L, Martín A, Sierra T, González MC, Escarpa A. Electrochemical detectors based on carbon and metallic nanostructures in capillary and microchip electrophoresis. Electrophoresis 2016; 38:80-94. [DOI: 10.1002/elps.201600232] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/27/2016] [Accepted: 06/28/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Laura García-Carmona
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Madrid Spain
| | - Aida Martín
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Madrid Spain
| | - Tania Sierra
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Madrid Spain
| | - María Cristina González
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Madrid Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering; University of Alcalá; Madrid Spain
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Ogończyk D, Gocyla M, Opallo M. Employment of electrostatic interactions for amperometric detection of carbon nanoparticles in a FIA system. Analyst 2016; 141:4319-25. [PMID: 27169923 DOI: 10.1039/c6an00752j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of methods for nanoparticle detection is highly desirable due to their increasing presence in the environment. Recently, we have shown that the electrochemical detection in flow is one of the possible solutions. Here we demonstrate a dramatic improvement of analytical parameters of such detection. The significant enhancement of an amperometric signal resulting from the electrocatalytic oxidation of ascorbic acid (AA) in a negatively charged phenylsulphonated carbon nanoparticle suspension in the millifluidic flow injection analysis system as compared to earlier results (D. Ogończyk, et al., Electrochem. Commun., 2014, 43, 40) is presented. This effect results from the tailoring of electrostatic interactions, e.g. optimization of the supporting electrolyte and AA concentration and/or immobilization of positively charged functionalities at the electrode surface. The sensitivity is improved by almost three orders of magnitude and the limit of detection of carbon nanoparticles is decreased by two orders of magnitude down to 0.001 mg mL(-1).
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Affiliation(s)
- D Ogończyk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka, 44/52, 01-224, Warsaw, Poland.
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Ishihara K, Chen W, Liu Y, Tsukamoto Y, Inoue Y. Cytocompatible and multifunctional polymeric nanoparticles for transportation of bioactive molecules into and within cells. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2016; 17:300-312. [PMID: 27877883 PMCID: PMC5111563 DOI: 10.1080/14686996.2016.1190257] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/21/2016] [Accepted: 05/12/2016] [Indexed: 05/23/2023]
Abstract
Multifunctional polymeric nanoparticles are materials with great potential for a wide range of biomedical applications. For progression in this area of research, unfavorable interactions of these nanoparticles with proteins and cells must be avoided in biological environments, for example, through treatment of the nanoparticle surfaces. Construction of an artificial cell membrane structure based on polymers bearing the zwitterionic phosphorylcholine group can prevent biological reactions at the surface effectively. In addition, certain bioactive molecules can be immobilized on the surface of the polymer to generate enough affinity to capture target biomolecules. Furthermore, entrapment of inorganic nanoparticles inside polymeric matrices enhances the nanoparticle functionality significantly. This review summarizes the preparation and characterization of cytocompatible and multifunctional polymeric nanoparticles; it analyzes the efficiency of their fluorescence function, the nature of the artificial cell membrane structure, and their performance as in-cell devices; and finally, it evaluates both their chemical reactivity and effects in cells.
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Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Weixin Chen
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yihua Liu
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yuriko Tsukamoto
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yuuki Inoue
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
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