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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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Magnetic solid phase extraction as a nonchromatographic method for the quantification of ultratrace inorganic arsenic in rice by inductively coupled plasma-optical emission spectrometry (ICP OES). Food Chem 2023; 412:135461. [PMID: 36731230 DOI: 10.1016/j.foodchem.2023.135461] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 01/04/2023] [Accepted: 01/09/2023] [Indexed: 01/18/2023]
Abstract
An alternative analytical method was developed for the quantification of inorganic arsenic (iAs) in rice by ICP OES. Iron nanoparticles modified with an organophosphorus compound were used as the solid phase for MSPE of iAs from the plant matrix. The MSPE procedure was performed using 4 mL of a buffer solution with pH 4.0, 20 mg of the nanomaterial, and a 15-min extraction time. The total As (tAs) by ICP OES was also quantified using the same MSPE procedure after solubilization of the samples by a block digester. The accuracy of tAs and iAs quantification was verified using CRM NIST 1568b (97 % and 101 % recovery, respectively). The precision (RSD < 15 %) and LOD and LOQ (1.08 and 3.70 µg kg-1, respectively) of the proposed method were satisfactory. The rice samples had tAs contents between 0.090 and 0.295 mg kg-1 and iAs mass fractions between 0.055 and 0.109 mg kg-1.
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[Magnetic ion imprinting techniques for the separation and analysis of elemental speciation]. Se Pu 2022; 40:979-987. [PMID: 36351806 PMCID: PMC9654609 DOI: 10.3724/sp.j.1123.2022.07013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Metal and metalloid elements have various possible isotopic compositions and oxidation states and often form coordination or covalent compounds with inorganic and organic small molecules or biological macromolecules, resulting in complex elemental speciation. Different species of the same element often have different properties, which dictate their behavior. Thus, elemental speciation analysis is vital for comprehensively and accurately assessing an element's environmental and biological effects and the corresponding risks. Because elemental speciation determines the behavior of an element in different environmental and biological processes, the analysis of elemental species has, in recent years, been important in various subjects, including analytical chemistry, environmental chemistry, geochemistry, ecology, agronomy, and biomedicine. The complexity of environmental and biological sample matrices, as well as the multiformity, low levels, and lability of chemical forms pose severe challenges in elemental speciation analysis. Therefore, the highly selective identification and efficient separation of native species is necessary for conducting the identification, quantification, ecotoxicity evaluation, and physiological function study of elemental speciation. Sample pretreatment by solid-phase extraction is an effective solution to the aforementioned problems, but the existing methods do not meet the requirements of current research. The transition of the target species from pre-processing to the detection device includes both on- and off-line arrangements. Compared with the on-line approach, the off-line approach requires more manual participation, increasing the analysis workload. However, the off-line approach can improve the analysis efficiency through high-throughput pretreatment when large batches of samples are encountered, meaning the off-line approach is still an effective model. Ion imprinting technology has been developed based on existing molecular imprinting technology, with four main steps present in the synthesis of ion imprinted polymers. First, ion imprinting technology uses metal ions as templates. Then, these templates are combined with the functional monomers through coordination, electrostatic or hydrogen bonding. The functional monomers simultaneously surround and fix the templates, after which the cross-linkers and functional monomers polymerize to prepare ion-imprinted polymers with a specific structure and composition. Finally, the imprinted holes are created in the polymers by eluting the template ions. Therefore, the template molecules, functional monomers, and cross-linkers are three precursors necessary for synthesizing ion-imprinted polymers. These polymers can specifically bind to the imprinted metal ions with accuracy, sensitivity, and reliability. In recent years, they have been widely used in separating, enriching, analyzing, and detecting elemental species. During solid-phase extraction, the non-magnetic adsorbent materials dispersed in the sample solution need to be separated by centrifugation or filtration, which is time-consuming and laborious. Because an external magnetic field can be used for rapid magnetic solid-phase extraction, it has become a potential method for separating and enriching elemental species. This review systematically summarizes the latest progress in ion-imprinting technology, including its principle and the preparation methods of ion-imprinted polymers. The challenges faced by ion imprinting technology are analyzed in the context of the development of ion-imprinting magnetic solid-phase extraction in elemental speciation analysis. Finally, the direction of future development and the strategies of ion imprinting technology in elemental speciation analysis are proposed. It is important to exploit novel organic-inorganic hybrid polymerization-based multifunctional ion-imprinted magnetic nanocomposites for the magnetic solid-phase extraction and separation of elemental species. By establishing the pretreatment protocols with high recognition selectivity, strong separation ability, large adsorption capacity, and good speciation stability, we expect to achieve the research objectives of simultaneously separating and enriching the multiple-species of typical metal/metalloid elements in environmental and biological samples.
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Graphene Oxide Synthesis, Properties and Characterization Techniques: A Comprehensive Review. CHEMENGINEERING 2021. [DOI: 10.3390/chemengineering5030064] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The unique properties of graphene oxide (GO) have attracted the attention of the research community and cost-effective routes for its production are studied. The type and percentage of the oxygen groups that decorate a GO sheet are dependent on the synthesis path, and this path specifies the carbon content of the sheet. The chemical reduction of GO results in reduced graphene oxide (rGO) while the removal of the oxygen groups is also achievable with thermal processes (tpGO). This review article introduces the reader to the carbon allotropes, provides information about graphene which is the backbone of GO and focuses on GO synthesis and properties. The last part covers some characterization techniques of GO (XRD, FTIR, AFM, SEM-EDS, N2 porosimetry and UV-Vis) with a view to the fundamental principles of each technique. Some critical aspects arise for GO synthesized and characterized from our group.
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Salve S, Bahiram Y, Jadhav A, Rathod R, Tekade RK. Nanoplatform-Integrated Miniaturized Solid-Phase Extraction Techniques: A Critical Review. Crit Rev Anal Chem 2021; 53:46-68. [PMID: 34096402 DOI: 10.1080/10408347.2021.1934651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Preparation of the biological samples is one of the most critical steps in sample analysis. In past decades, the liquid-liquid extraction technique has been used to extract the desired analytes from complex biological matrices. However, solid-phase extraction (SPE) gained popularity due to versatility, simplicity, selectivity, reproducibility, high sample recovery %, solvent economy, and time-saving nature. The superior extraction efficiency of SPE can be attributed to the development of advanced techniques, including the nanosorbents technology. The nanosorbent technology significantly simplified the sample preparation, improved the selectivity, diversified the application, and accelerated the sample analysis. This review critically expands on the to-date advancements reported in SPE with particular regards to the nanosorbent technology.
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Affiliation(s)
- Sushmita Salve
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Yogita Bahiram
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Amol Jadhav
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Rajeshwari Rathod
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Rakesh Kumar Tekade
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
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Costa MH, Ferreira DTS, Pádua JES, Fernandes JPA, Santos JCC, Cunha FAS, Araujo MCU. A fast, low-cost, sensitive, selective, and non-laborious method based on functionalized magnetic nanoparticles, magnetic solid-phase extraction, and fluorescent carbon dots for the fluorimetric determination of copper in wines without prior sample treatment. Food Chem 2021; 363:130248. [PMID: 34144418 DOI: 10.1016/j.foodchem.2021.130248] [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: 02/13/2021] [Revised: 05/24/2021] [Accepted: 05/28/2021] [Indexed: 10/21/2022]
Abstract
A new fluorimetric method for copper(II) determination in wines was developed combining functionalized magnetic nanoparticles (FMNP) and fluorescent carbon dots (FCD). To produce FMNP, Fe3O4 was coated with Al2O3 forming Fe3O4@Al2O3 core-shell magnetic nanoparticles and functionalized with PAN and SDS. FCD was synthesized from pineapple juice through hydrothermal carbonization. For copper determination, aliquots of wine, the FMNP dispersion, and Britton-Robinson buffer (pH = 4.0) were mixed under stirring to allow the adsorption of copper by FMNP. Cu-FMNP complex was attracted by a niobium magnet and, after discarding the non-magnetic material, the copper(II) ions were eluted with an FCD dispersion before fluorescence quenching measurements. The proposed method presented a linear range from 0.020 to 0.100 mg L-1 (r2 = 0.9953), RSD (intraday) < 3.0%, and recovery rates from 96 to 105 %. FMNP and FCD properties permitted extraction/preconcentration/determination of copper within 1 min with an enrichment factor of nine and without prior sample treatment.
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Affiliation(s)
- Matheus H Costa
- Universidade Federal da Paraíba, Departamento de Química, P.O. Box 5093, Zip Code 58051-970, João Pessoa, Paraíba, Brazil
| | - Danilo T S Ferreira
- Universidade Federal da Paraíba, Departamento de Química, P.O. Box 5093, Zip Code 58051-970, João Pessoa, Paraíba, Brazil
| | - Jonathan E S Pádua
- Universidade Federal da Paraíba, Departamento de Química, P.O. Box 5093, Zip Code 58051-970, João Pessoa, Paraíba, Brazil
| | - Julys P A Fernandes
- Universidade Federal da Paraíba, Departamento de Química, P.O. Box 5093, Zip Code 58051-970, João Pessoa, Paraíba, Brazil
| | - Josué Carinhanha C Santos
- Universidade Federal de Alagoas, Instituto de Química e Biotecnologia, Campus A.C. Simões, Tabuleiro dos Martins, Zip Code 57072-900, Maceió, Alagoas, Brazil
| | - Francisco Antônio S Cunha
- Universidade Federal de Alagoas, Instituto de Química e Biotecnologia, Campus A.C. Simões, Tabuleiro dos Martins, Zip Code 57072-900, Maceió, Alagoas, Brazil
| | - Mario Cesar Ugulino Araujo
- Universidade Federal da Paraíba, Departamento de Química, P.O. Box 5093, Zip Code 58051-970, João Pessoa, Paraíba, Brazil.
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da Silva FLF, Neto DMA, de Menezes FL, Sa IP, de Higuera JM, Fechine PBA, da Costa LS, Nogueira ARA, Lopes GS, Matos WO. Non-chromatographic arsenic speciation analyses in wild shrimp (Farfantepenaeus brasiliensis) using functionalized magnetic iron-nanoparticles. Food Chem 2020; 345:128781. [PMID: 33601653 DOI: 10.1016/j.foodchem.2020.128781] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/11/2020] [Accepted: 11/29/2020] [Indexed: 11/26/2022]
Abstract
A new iron-magnetic nanomaterial functionalized with organophosphorus compound was used as solid-phase for arsenic speciation analysis in seafood samples by ICP-MS. The procedure was optimized using chemometric tools and the variables pH = 4.0, 15 min extraction time, and 20 mg of mass of material were obtained as the optimum point. The inorganic arsenic (iAs) extracted using nanoparticles presented concentrations between 20 and 100 µg kg-1 in the evaluated samples. The method was validated for accuracy using CRMs DOLT-5 and DORM-4. It was possible to reuse the same magnetic nanomaterial for 6 successive cycles, and we obtained a detection limit of 16.4 ng kg-1. The proposed method is suitable for the use of inorganic speciation of As, presenting good accuracy, precision, relatively low cost, and acquittance to green chemistry principles.
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Affiliation(s)
- Francisco L F da Silva
- Laboratório de Estudos em Química Aplicada (LEQA), Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-760 Fortaleza, CE, Brazil
| | - Davino M Andrade Neto
- Grupo de Química dos Materiais (GQMat), Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-760 Fortaleza, CE, Brazil; Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE) - Campus Camocim, 62400-000 Camocim, CE, Brazil
| | - Fernando L de Menezes
- Grupo de Química dos Materiais (GQMat), Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-760 Fortaleza, CE, Brazil
| | - Ivero P Sa
- Grupo de Análise Instrumental Aplicada (GAIA), Departamento de Química, Universidade Federal de São Carlos (UFSCar), PO Box 676, 13560-970 São Carlos, SP, Brazil; EMBRAPA Pecuária Sudeste, P.O. Box 339, 13560-970 São Carlos, SP, Brazil
| | - Julymar M de Higuera
- Grupo de Análise Instrumental Aplicada (GAIA), Departamento de Química, Universidade Federal de São Carlos (UFSCar), PO Box 676, 13560-970 São Carlos, SP, Brazil; EMBRAPA Pecuária Sudeste, P.O. Box 339, 13560-970 São Carlos, SP, Brazil
| | - Pierre B A Fechine
- Grupo de Química dos Materiais (GQMat), Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-760 Fortaleza, CE, Brazil
| | - Luelc S da Costa
- Instituto de Química, Universidade Estadual de Campinas (UNICAMP), Campinas, SP 13083-970, Brazil
| | - Ana R A Nogueira
- EMBRAPA Pecuária Sudeste, P.O. Box 339, 13560-970 São Carlos, SP, Brazil
| | - Gisele S Lopes
- Laboratório de Estudos em Química Aplicada (LEQA), Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-760 Fortaleza, CE, Brazil
| | - Wladiana O Matos
- Laboratório de Estudos em Química Aplicada (LEQA), Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-760 Fortaleza, CE, Brazil.
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Jakavula S, Biata NR, Dimpe KM, Pakade VE, Nomngongo PN. A Critical Review on the Synthesis and Application of Ion-Imprinted Polymers for Selective Preconcentration, Speciation, Removal and Determination of Trace and Essential Metals from Different Matrices. Crit Rev Anal Chem 2020; 52:314-326. [PMID: 32723191 DOI: 10.1080/10408347.2020.1798210] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The presence of toxic trace metals and high concentrations of essential elements in the environment presents a serious threat to living organism. Various methods have been used for the detection, preconcentration and remediation of these metals from biological, environmental and food matrices. Owing to the complexicity of samples, methods with high selectivity have been used for detection, preconcentration and remediation of these trace metals. These methods are achieved by the use of ion-imprinted polymers (IIPs) due to their impressive properties such as selectivity, high extraction efficiency, speciation capability and reusability. Because of the increase of toxic trace and essential metals in the environment, IIPs have attracted great use in analytical chemistry. This review, provide a brief background on IIPs and polymerization method that are used for their preparation. Recent applications of IIPs as adsorbents for preconcentration, removal, speciation and electrochemical detection of trace and essential metal is also discussed.
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Affiliation(s)
- Silindokuhle Jakavula
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa.,DSI/NRF SARChI Chair, Nanotechnology for Water, University of Johannesburg, Doornfontein, South Africa
| | - N Raphael Biata
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa.,DSI/NRF SARChI Chair, Nanotechnology for Water, University of Johannesburg, Doornfontein, South Africa.,DSI/Mintek Nanotechnology Innovation Centre, University of Johannesburg, Doornfontein, South Africa
| | - K Mogolodi Dimpe
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Vusumzi E Pakade
- Department of Chemistry, Vaal University of Technology, Vanderbijlpark, South Africa
| | - Philiswa N Nomngongo
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa.,DSI/NRF SARChI Chair, Nanotechnology for Water, University of Johannesburg, Doornfontein, South Africa.,DSI/Mintek Nanotechnology Innovation Centre, University of Johannesburg, Doornfontein, South Africa
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Nanomaterials for the detection of halides and halogen oxyanions by colorimetric and luminescent techniques: A critical overview. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115837] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Speciation of chromium in waters using dispersive micro-solid phase extraction with magnetic ferrite and graphite furnace atomic absorption spectrometry. Sci Rep 2020; 10:5268. [PMID: 32210320 PMCID: PMC7093401 DOI: 10.1038/s41598-020-62212-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/11/2020] [Indexed: 11/20/2022] Open
Abstract
The combination of a solid-phase microextraction process with graphite furnace atomic absorption spectrometry provides a very sensitive determination method for determining chromium in waters. Freshly prepared ferrite particles are used to retain the chromium species, and then separated by a magnet without the need for a centrifugation step. The solid phase is suspended in water and directly introduced into the graphite furnace to obtain the analytical signal. The complexation of Cr(III) with ethylenediaminetetraacetate allows the selective retention of Cr(VI), and thus the speciation of the metal. The procedure is sensitive (0.01 µg L−1 detection limit when using a 10 mL sample aliquot) and reproducible (5% relative standard deviation for five consecutive experiments at the 0.3 µg L−1 level). The reliability of the procedure is verified by analysing five certified water samples.
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Pyrzynska K. Nanomaterials in speciation analysis of metals and metalloids. Talanta 2020; 212:120784. [PMID: 32113547 DOI: 10.1016/j.talanta.2020.120784] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/22/2020] [Accepted: 01/25/2020] [Indexed: 02/07/2023]
Abstract
Nanomaterials have draw extensive attention from the scientists in recent years mainly due to their unique and attractive thermal, mechanical and electronic properties, as well as high surface to volume ratio and the possibility for surface functionalization. Whereas mono functional nanomaterials providing a single function, the preparation of core/shell nanoparticles allows different properties to be combined in one material. Their properties have been extensively exploited in different extraction techniques to improve the efficiency of separation and preconcentration, analytical selectivity and method reliability. The aim of this paper is to provide an updated revision of the most important features and application of nanomaterials (metallic, silica, polymeric and carbon-based) for solid phase extraction and microextraction techniques in speciation analysis of some metals and metalloids (As, Cr, Sb, Se). Emphasis will be placed on the presentation of the most representative works published in the last five years (2015-2019).
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Affiliation(s)
- Krystyna Pyrzynska
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-93, Warsaw, Poland.
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Olenin AY. Chemically Modified Silver and Gold Nanoparticles in Spectrometric Analysis. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819040099] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Zou Z, Hu J, Xu F, Hou X, Jiang X. Nanomaterials for photochemical vapor generation-analytical atomic spectrometry. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.03.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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García-Figueroa A, Pena-Pereira F, Lavilla I, Bendicho C. Speciation of gold nanoparticles and total gold in natural waters: A novel approach based on naked magnetite nanoparticles in combination with ascorbic acid. Talanta 2019; 193:176-183. [DOI: 10.1016/j.talanta.2018.09.092] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 09/21/2018] [Accepted: 09/24/2018] [Indexed: 01/09/2023]
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15
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Olenin AY, Lisichkin GV. Preparation and Use of Chemically Modified Noble Metal Nanoparticles. RUSS J APPL CHEM+ 2018. [DOI: 10.1134/s107042721809001x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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16
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Providing hyper-branched dendrimer conjugated with β-cyclodextrin based on magnetic nanoparticles for the separation of methylprednisolone acetate. J Chromatogr A 2018; 1571:38-46. [DOI: 10.1016/j.chroma.2018.08.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 07/05/2018] [Accepted: 08/01/2018] [Indexed: 11/19/2022]
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17
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Magnetic molecularly imprinted polymer nanoparticles for dispersive micro solid-phase extraction and determination of buprenorphine in human urine samples by HPLC-FL. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1355-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hemmati M, Rajabi M, Asghari A. Magnetic nanoparticle based solid-phase extraction of heavy metal ions: A review on recent advances. Mikrochim Acta 2018; 185:160. [DOI: 10.1007/s00604-018-2670-4] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 01/10/2018] [Indexed: 12/14/2022]
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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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Gao X, Dai J, Zhao H, Zhu J, Luo L, Zhang R, Zhang Z, Li L. Synthesis of MoS2 nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS. RSC Adv 2018; 8:18364-18371. [PMID: 35541115 PMCID: PMC9080583 DOI: 10.1039/c8ra01891j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/11/2018] [Indexed: 11/25/2022] Open
Abstract
Mercury species have aroused wide concern in the past several decades due to their high toxicity. However, it is still difficult to detect ultra-trace mercury species due to their biochemical transformation in complex samples. To establish a simpler and more sensitive method for pre-concentration and determination of trace mercury species, molybdenum disulfide (MoS2) nanosheets with sulfur-rich characteristics and enlarged interlayer spacing were prepared by a hydrothermal method coupled with a sonication-assisted liquid exfoliation method and acted as solid-phase extraction adsorbent. The nano-MoS2 had high adsorption capacity, fast adsorption rate and excellent selectivity towards mercury ions (Hg2+), methyl mercury (MeHg+) and ethyl mercury (EtHg+) in a wide pH range and complex matrices. And it could be easily regenerated by 4 mol L−1 HCl and reused several times. After optimizing HPLC-UV-HG-AFS conditions, a great linearity (1.0–10.0 μg L−1, R2 = 0.999 for Hg2+, MeHg+ and EtHg+), lower detection limits (0.017, 0.037 and 0.021 ng mL−1 for Hg2+, MeHg+ and EtHg+, respectively), relative standard deviations (<5%) and addition recoveries of the samples within 82.75–113.38% were observed. In summary, trace inorganic and organic mercury species in environmental and biological samples could be selectively enriched by the prepared nano-MoS2 and efficiently seperated and detected by HPLC-UV-HG-AFS. The present study will help provide a better strategy for environmental monitoring and health assessment of mercury pollutants. As-synthesized few-layered molybdenum disulfide nanosheets were used as solid-phase extraction absorbent for ultra-trace mercury speciation analysis by HPLC-UV-HG-AFS.![]()
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Affiliation(s)
- Xingsu Gao
- Department of Hygiene Analysis and Detection
- School of Public Health
- Nanjing Medical University
- Nanjing 211166
- P. R. China
| | - Jiayong Dai
- Department of Hygiene Analysis and Detection
- School of Public Health
- Nanjing Medical University
- Nanjing 211166
- P. R. China
| | - Hongyan Zhao
- Department of Hygiene Analysis and Detection
- School of Public Health
- Nanjing Medical University
- Nanjing 211166
- P. R. China
| | - Jun Zhu
- Department of Hygiene Analysis and Detection
- School of Public Health
- Nanjing Medical University
- Nanjing 211166
- P. R. China
| | - Lan Luo
- Nanjing Entry-exit Inspection and Quarantine Bureau
- Nanjing 211106
- P. R. China
| | - Rui Zhang
- Nanjing Entry-exit Inspection and Quarantine Bureau
- Nanjing 211106
- P. R. China
| | - Zhan Zhang
- Department of Hygiene Analysis and Detection
- School of Public Health
- Nanjing Medical University
- Nanjing 211166
- P. R. China
| | - Lei Li
- Department of Hygiene Analysis and Detection
- School of Public Health
- Nanjing Medical University
- Nanjing 211166
- P. R. China
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Tiwari S, Sharma N, Saxena R. Modified carbon nanotubes in online speciation of chromium in real water samples using hyphenated FI-FAAS. NEW J CHEM 2017. [DOI: 10.1039/c7nj01253e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fast preconcentrative speciation of chromium in polluted water samples using l-arginine functionalized multi-walled carbon nanotubes.
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Affiliation(s)
- Shelja Tiwari
- Department of Chemistry
- Kirori Mal College
- University of Delhi
- Delhi – 110007
- India
| | - Niharika Sharma
- Department of Chemistry
- Kirori Mal College
- University of Delhi
- Delhi – 110007
- India
| | - Reena Saxena
- Department of Chemistry
- Kirori Mal College
- University of Delhi
- Delhi – 110007
- India
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