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Pal A, Biswas S, Chaudhury K, Das S. Paper Sensor Modified with MoS 2 for Detection of Dopamine Using a Machine-Intelligent Web App Interface. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43060-43074. [PMID: 37643137 DOI: 10.1021/acsami.3c03899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
The sensing behavior of a MoS2-functionalized paper sensor towards dopamine was explored through a combinatorial approach of theoretical analysis, subsequent experimental validation, and machine-learning-driven predictive modeling of the measured electrochemical outputs. The suitability of the chosen 2D material for efficient detection of dopamine was confirmed using density functional theory. The physisorption behavior along with electrostatic interaction due to the incorporation of dopamine on MoS2 was unraveled under the purview of theoretically estimated noncovalent interaction and charge density difference plot. The theoretical Löwdin population analysis elucidates the alteration in oxidation potential of dopamine, as observed in electrochemical experiments. The electrochemical responses of the developed sensor with the spiked serum samples showed an average accuracy of more than 96% with a limit of detection of 10 nM. Furthermore, implementation of a machine-intelligent interactive web app interface improved the resolution of the sensing platform significantly with an enhanced accuracy of nearly 99%.
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Affiliation(s)
- Arijit Pal
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Souvik Biswas
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Koel Chaudhury
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Soumen Das
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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Kurlyandskaya GV, Litvinova LS, Safronov AP, Schupletsova VV, Tyukova IS, Khaziakhmatova OG, Slepchenko GB, Yurova KA, Cherempey EG, Kulesh NA, Andrade R, Beketov IV, Khlusov IA. Water-Based Suspensions of Iron Oxide Nanoparticles with Electrostatic or Steric Stabilization by Chitosan: Fabrication, Characterization and Biocompatibility. SENSORS (BASEL, SWITZERLAND) 2017; 17:E2605. [PMID: 29137198 PMCID: PMC5712992 DOI: 10.3390/s17112605] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 11/08/2017] [Accepted: 11/10/2017] [Indexed: 11/25/2022]
Abstract
Present day biomedical applications, including magnetic biosensing, demand better understanding of the interactions between living systems and magnetic nanoparticles (MNPs). In this work spherical MNPs of maghemite were obtained by a highly productive laser target evaporation technique. XRD analysis confirmed the inverse spinel structure of the MNPs (space group Fd-3m). The ensemble obeyed a lognormal size distribution with the median value 26.8 nm and dispersion 0.362. Stabilized water-based suspensions were fabricated using electrostatic or steric stabilization by the natural polymer chitosan. The encapsulation of the MNPs by chitosan makes them resistant to the unfavorable factors for colloidal stability typically present in physiological conditions such as pH and high ionic force. Controlled amounts of suspensions were used for in vitro experiments with human blood mononuclear leukocytes (HBMLs) in order to study their morphofunctional response. For sake of comparison the results obtained in the present study were analyzed together with our previous results of the study of similar suspensions with human mesenchymal stem cells. Suspensions with and without chitosan enhanced the secretion of cytokines by a 24-h culture of HBMLs compared to a control without MNPs. At a dose of 2.3, the MTD of chitosan promotes the stimulating effect of MNPs on cells. In the dose range of MNPs 10-1000 MTD, chitosan "inhibits" cellular secretory activity compared to MNPs without chitosan. Both suspensions did not caused cell death by necrosis, hence, the secretion of cytokines is due to the enhancement of the functional activity of HBMLs. Increased accumulation of MNP with chitosan in the cell fraction at 100 MTD for 24 h exposure, may be due to fixation of chitosan on the outer membrane of HBMLs. The discussed results can be used for an addressed design of cell delivery/removal incorporating multiple activities because of cell capability to avoid phagocytosis by immune cells. They are also promising for the field of biosensor development for the detection of magnetic labels.
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Affiliation(s)
- Galina V Kurlyandskaya
- Departamento de Electricidad y Electrónica and BCMaterials, Universidad del País Vasco UPV-EHU, 48080 Bilbao, Spain.
- Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620002, Russia.
| | - Larisa S Litvinova
- Laboratory of Immunology and Cell Biotechnology, I. Kant Baltic Federal University, Kaliningrad 23601, Russia.
| | - Alexander P Safronov
- Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620002, Russia.
- Institute of Electrophysics, Ural Division RAS, Ekaterinburg 620016, Russia.
| | - Valeria V Schupletsova
- Laboratory of Immunology and Cell Biotechnology, I. Kant Baltic Federal University, Kaliningrad 23601, Russia.
| | - Irina S Tyukova
- Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620002, Russia.
| | - Olga G Khaziakhmatova
- Laboratory of Immunology and Cell Biotechnology, I. Kant Baltic Federal University, Kaliningrad 23601, Russia.
| | - Galina B Slepchenko
- Department of Physical and Analytical Chemistry, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Kristina A Yurova
- Laboratory of Immunology and Cell Biotechnology, I. Kant Baltic Federal University, Kaliningrad 23601, Russia.
| | - Elena G Cherempey
- Department of Physical and Analytical Chemistry, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Nikita A Kulesh
- Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620002, Russia.
| | - Ricardo Andrade
- Advanced Research Facilities (SGIKER), Universidad del País Vasco UPV-EHU, 48080 Bilbao, Spain.
| | - Igor V Beketov
- Institute of Electrophysics, Ural Division RAS, Ekaterinburg 620016, Russia.
| | - Igor A Khlusov
- Laboratory of Immunology and Cell Biotechnology, I. Kant Baltic Federal University, Kaliningrad 23601, Russia.
- Department of Experimental Physics, National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
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Strategies for overcoming limitations associated with fluorine determination in solid materials by conventional wavelength dispersive X-ray fluorescence spectrometry. Microchem J 2015. [DOI: 10.1016/j.microc.2015.03.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nischkauer W, Vanhaecke F, Bernacchi S, Herwig C, Limbeck A. Radial line-scans as representative sampling strategy in dried-droplet laser ablation of liquid samples deposited on pre-cut filter paper disks. SPECTROCHIMICA ACTA. PART B, ATOMIC SPECTROSCOPY 2014; 101:123-129. [PMID: 25382929 PMCID: PMC4210661 DOI: 10.1016/j.sab.2014.07.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 07/18/2014] [Indexed: 06/04/2023]
Abstract
Nebulising liquid samples and using the aerosol thus obtained for further analysis is the standard method in many current analytical techniques, also with inductively coupled plasma (ICP)-based devices. With such a set-up, quantification via external calibration is usually straightforward for samples with aqueous or close-to-aqueous matrix composition. However, there is a variety of more complex samples. Such samples can be found in medical, biological, technological and industrial contexts and can range from body fluids, like blood or urine, to fuel additives or fermentation broths. Specialized nebulizer systems or careful digestion and dilution are required to tackle such demanding sample matrices. One alternative approach is to convert the liquid into a dried solid and to use laser ablation for sample introduction. Up to now, this approach required the application of internal standards or matrix-adjusted calibration due to matrix effects. In this contribution, we show a way to circumvent these matrix effects while using simple external calibration for quantification. The principle of representative sampling that we propose uses radial line-scans across the dried residue. This compensates for centro-symmetric inhomogeneities typically observed in dried spots. The effectiveness of the proposed sampling strategy is exemplified via the determination of phosphorus in biochemical fermentation media. However, the universal viability of the presented measurement protocol is postulated. Detection limits using laser ablation-ICP-optical emission spectrometry were in the order of 40 μg mL- 1 with a reproducibility of 10 % relative standard deviation (n = 4, concentration = 10 times the quantification limit). The reported sensitivity is fit-for-purpose in the biochemical context described here, but could be improved using ICP-mass spectrometry, if future analytical tasks would require it. Trueness of the proposed method was investigated by cross-validation with conventional liquid measurements, and by analyzing IAEA-153 reference material (Trace Elements in Milk Powder); a good agreement with the certified value for phosphorus was obtained.
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Affiliation(s)
- Winfried Nischkauer
- Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna, Austria
- Department of Analytical Chemistry, Ghent University, Ghent, Belgium
| | - Frank Vanhaecke
- Department of Analytical Chemistry, Ghent University, Ghent, Belgium
| | - Sébastien Bernacchi
- Institute of Chemical Engineering, Vienna University of Technology, Vienna, Austria
| | - Christoph Herwig
- Institute of Chemical Engineering, Vienna University of Technology, Vienna, Austria
| | - Andreas Limbeck
- Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna, Austria
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Analytical methods for the determination of halogens in bioanalytical sciences: a review. Anal Bioanal Chem 2013; 405:7615-42. [PMID: 23780223 DOI: 10.1007/s00216-013-7077-9] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 05/15/2013] [Accepted: 05/17/2013] [Indexed: 10/26/2022]
Abstract
Fluorine, chlorine, bromine, and iodine have been studied in biological samples and other related matrices owing to the need to understand the biochemical effects in living organisms. In this review, the works published in last 20 years are covered, and the main topics related to sample preparation methods and analytical techniques commonly used for fluorine, chlorine, bromine, and iodine determination in biological samples, food, drugs, and plants used as food or with medical applications are discussed. The commonest sample preparation methods, as extraction and decomposition using combustion and pyrohydrolysis, are reviewed, as well as spectrometric and electroanalytical techniques, spectrophotometry, total reflection X-ray fluorescence, neutron activation analysis, and separation systems using chromatography and electrophoresis. On this aspect, the main analytical challenges and drawbacks are highlighted. A discussion related to the availability of certified reference materials for evaluation of accuracy is also included, as well as a discussion of the official methods used as references for the determination of halogens in the samples covered in this review.
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De La Calle I, Costas M, Cabaleiro N, Lavilla I, Bendicho C. Fast method for multielemental analysis of plants and discrimination according to the anatomical part by total reflection X-ray fluorescence spectrometry. Food Chem 2013; 138:234-41. [DOI: 10.1016/j.foodchem.2012.09.105] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 06/22/2012] [Accepted: 09/30/2012] [Indexed: 10/27/2022]
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Cinosi A, Andriollo N, Tibaldi F, Monticelli D. Atmospheric pressure vapour phase decomposition: A proof of principle. Talanta 2012; 101:148-50. [DOI: 10.1016/j.talanta.2012.09.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 09/06/2012] [Accepted: 09/16/2012] [Indexed: 11/24/2022]
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