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Electrochemical Detection of Sulfite by Electroreduction Using a Carbon Paste Electrode Binder with N-octylpyridinium Hexafluorophosphate Ionic Liquid. Catalysts 2022. [DOI: 10.3390/catal12121675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Sulfite is a widely used additive in food and beverages, and its maximum content is limited by food regulations. For this reason, determining the sulfite concentration using fast, low-cost techniques is a current challenge. This work describes the behavior of a sensor based on an electrode formed by carbon nanotubes an ionic liquid as binder, which by electrochemical reduction, allows detecting sulfite with a detection limit of 1.6 ± 0.05 mmol L−1 and presents adequate sensitivity. The advantage of detecting sulfite by reduction and not by oxidation is that the presence of antioxidants such as ascorbic acid does not affect the measurement. The electrode shown here is low-cost and easy to manufacture, robust, and stable.
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2
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®®Development of a portable electroanalytical methodology for determination of sulfite in wine using screen-printed carbon electrodes modified with carbon nanotubes. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.105052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Sulfite food additive electrochemical determination by nucleophilic addition on poly(4-aminodiphenylamine)-4-aminothiophenol-Au composite electrode. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Goularte RB, Winiarski JP, Latocheski E, Jost CL. Novel analytical sensing strategy using a palladium nanomaterial-based electrode for nimesulide electrochemical reduction. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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de Barros MR, Winiarski JP, de Matos Morawski F, Marim RG, Chaves ES, Blacha-Grzechnik A, Jost CL. A high-performance electrochemical sensor based on a mesoporous silica/titania material and cobalt(II) phthalocyanine for sensitive pentachlorophenol determination. Mikrochim Acta 2022; 189:269. [PMID: 35788785 DOI: 10.1007/s00604-022-05360-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/25/2022] [Indexed: 10/17/2022]
Abstract
The synthesis and characterization of a novel titania/silica hybrid xerogel subsequently modified with 4-methylpyridine (4-Pic), named TiSi4Pic+Cl- is reported. The physicochemical, structural and thermal properties of TiSi4Pic+Cl- were characterized using several techniques. Anchoring cobalt(II) phthalocyanine (CoTsPc) in TiSi4Pic+Cl- showed greater electroanalytical sensitivity over other sensors built with these materials. A novel electroanalytical method was developed to quantify the noxious biocide pentachlorophenol (PCP) for environmental monitoring. The peak current intensity increased linearly with the analyte concentration in the range between 0.99 and 4.21 μmol L-1, based on the oxidation process (at + 0.81 V, vs. Ag/AgCl) of differential pulse voltammetry (DPV). The estimated limit of detection (LOD) was 29 nmol L-1. Recovery tests in environmental samples showed a PCP concentration of 2.05 ± 0.03 μmol L-1 (n = 3). The method was statistically validated by comparing the PCP concentrations with those obtained by molecular absorption spectrometry and high-performance liquid chromatography-diode array detection (HPLC-DAD). At a 95% confidence level, no difference between the results was found, therefore confirming the excellent accuracy of the proposed method.
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Affiliation(s)
- Marília Reginato de Barros
- ampere - Laboratório de Plataformas Eletroquímicas - Universidade Federal de Santa Catarina - Departamento de Química, Florianópolis, SC, 88040-900, Brazil
| | - João Paulo Winiarski
- ampere - Laboratório de Plataformas Eletroquímicas - Universidade Federal de Santa Catarina - Departamento de Química, Florianópolis, SC, 88040-900, Brazil
| | - Franciele de Matos Morawski
- ampere - Laboratório de Plataformas Eletroquímicas - Universidade Federal de Santa Catarina - Departamento de Química, Florianópolis, SC, 88040-900, Brazil
| | - Renan Guilherme Marim
- LEMA- Laboratório de Espectrometria Atômica E de Massa - Universidade Federal de Santa Catarina - Departamento de Química, Florianópolis, SC, 88040-900, Brazil
| | - Eduardo Sidinei Chaves
- LEMA- Laboratório de Espectrometria Atômica E de Massa - Universidade Federal de Santa Catarina - Departamento de Química, Florianópolis, SC, 88040-900, Brazil
| | - Agata Blacha-Grzechnik
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100, Gliwice, Poland
| | - Cristiane Luisa Jost
- ampere - Laboratório de Plataformas Eletroquímicas - Universidade Federal de Santa Catarina - Departamento de Química, Florianópolis, SC, 88040-900, Brazil.
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Dascalu M, Stoica AC, Bele A, Macsim AM, Bargan A, Varganici CD, Stiubianu GT, Racles C, Shova S, Cazacu M. Octakis(Carboxyalkyl-Thioethyl)Silsesquioxanes and Derived Metal Complexes: Synthesis, Characterization and Catalytic Activity Assessments. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02408-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Nanoconjugates based on a novel organic-inorganic hybrid silsesquioxane and gold nanoparticles as hemocompatible nanomaterials for promising biosensing applications. Colloids Surf B Biointerfaces 2022; 213:112355. [PMID: 35158220 DOI: 10.1016/j.colsurfb.2022.112355] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 11/22/2021] [Accepted: 01/20/2022] [Indexed: 12/15/2022]
Abstract
A new hybrid organic-inorganic silsesquioxane material, 3-n-propyl(2-amino-4-methyl)pyridium chloride (SiAMPy+Cl-), was synthesized and successfully applied for the synthesis of stable nanoconjugates with gold nanoparticles (AuNPs-SiAMPy+). SiAMPy+Cl- was obtained through a simple sol-gel procedure by using chloropropyltrimetoxysilane and tetraethylorthosilicate as precursors and 2-amino-4-methylpyridine as the functionalizing agent. The resulting material was characterized by employing FTIR, XRD, and 1H-, 13C-, and 29Si-NMR spectroscopy. The synthesis of AuNPs-SiAMPy+ nanoconjugates was optimized through a 23 full factorial design. UV-VIS, FTIR, TEM, DLS, and ζ-potential measurements were used to characterize the nanoconjugates, which presented a spherical morphology with an average diameter of 5.8 nm. To investigate the existence of toxic effects of AuNPs-SiAMPy+ on blood cells, which is essential for their future biomedical applications, toxicity assays on human erythrocytes and leukocytes were performed. Interestingly, no cytotoxic effects were observed for both types of cells. The nanoconjugates were further applied in the construction of electrochemical immunosensing devices, aiming the detection of anti-Trypanosoma cruzi antibodies in serum as biomarkers of Chagas disease. The AuNPs-SiAMPy+ significantly enhanced the sensitivity of the biodevice, which was able to discriminate between anti-T. cruzi positive and negative serum samples. Thus, the AuNPs-SiAMPy+-based biosensor showed great potential to be used as a new tool to perform fast and accurate diagnosis of Chagas disease. The promising findings described herein strongly confirm the remarkable potential of SiAMPy+Cl- to obtain nanomaterials, which can present notable biomedical properties and applications.
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Shenashen MA, Emran MY, El Sabagh A, Selim MM, Elmarakbi A, El-Safty SA. Progress in sensory devices of pesticides, pathogens, coronavirus, and chemical additives and hazards in food assessment: Food safety concerns. PROGRESS IN MATERIALS SCIENCE 2022; 124:100866. [DOI: 10.1016/j.pmatsci.2021.100866] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Khan MAR, Al Mamun MS, Habib MA, Islam AN, Mahiuddin M, Karim KMR, Naime J, Saha P, Dey SK, Ara MH. A review on gold nanoparticles: Biological synthesis, characterizations, and analytical applications. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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10
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Reanpang P, Pun-uam T, Jakmunee J, Khonyoung S. An Environmentally Friendly Flow Injection-Gas Diffusion System Using Roselle ( Hibiscus sabdariffa L.) Extract as Natural Reagent for the Photometric Determination of Sulfite in Wines. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2021; 2021:6665848. [PMID: 34113471 PMCID: PMC8154276 DOI: 10.1155/2021/6665848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 03/21/2021] [Accepted: 05/10/2021] [Indexed: 06/12/2023]
Abstract
In this work, a green and simpler method for photometric determination of sulfite based on a flow injection-gas diffusion (FI-GD) system using a natural reagent extracted from roselle (Hibiscus sabdariffa L.) was proposed. Despite the fact that the employed reaction is not selective to sulfite, its sensitivity is high, and the selectivity can be improved by coupling a GD unit to the FI system. The method involves monitoring a decrease in absorbance of the reagent solution that is used as an acceptor solution. When a standard solution or sample solution was injected into an acidic donor stream, the liberated sulfur dioxide diffuses through a gas-permeable membrane of the GD unit into the acceptor solution, causing color fading of the reagent. A linear analytical curve in the range of 5-100 mg L-1 was obtained with a detection limit of 2 mg·L-1. Relative standard deviations of 0.9%, 0.6%, and 0.6% were obtained for the determination of 30, 70, and 100 mg·L-1 SO3 2- (n = 11). The developed method was applied to wine samples, giving results that agreed with those obtained with the Ripper titrimetric method. The proposed method offers advantages of simplicity, cost-effectiveness, and being environmentally friendly such as reduced chemical consumption and less waste generation.
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Affiliation(s)
- Preeyaporn Reanpang
- Department of Chemistry, Faculty of Science and Technology, Thammasat University, Lampang 52190, Thailand
| | - Teerarat Pun-uam
- Department of Chemistry, Faculty of Science and Technology, Thammasat University, Rangsit, Pathumthani 12120, Thailand
| | - Jaroon Jakmunee
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Supada Khonyoung
- Department of Chemistry, Faculty of Science and Technology, Thammasat University, Rangsit, Pathumthani 12120, Thailand
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Winiarski JP, Rampanelli R, Bassani JC, Mezalira DZ, Jost CL. Multi-walled carbon nanotubes/nickel hydroxide composite applied as electrochemical sensor for folic acid (vitamin B9) in food samples. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2020.103511] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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ZHANG Z, WANG H, SUN L. A Novel Modification Method of Stainless-steel Electrode for Sulfur Preparation by Reduction of Sulfur Dioxide. ELECTROCHEMISTRY 2020. [DOI: 10.5796/electrochemistry.19-00082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Zhengyang ZHANG
- Department of Metallurgy Engineering, Beijing General Research Institute of Mining & Metallurgy
| | - Haibei WANG
- Department of Metallurgy Engineering, Beijing General Research Institute of Mining & Metallurgy
| | - Liugen SUN
- Department of Metallurgy Engineering, Beijing General Research Institute of Mining & Metallurgy
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Dos Santos Franco F, Fernandes DS, Do Carmo DR. A modified hybrid silsesquioxane/histidine composite for copper and zinc adsorption and it behavior in the electro-oxidation of ascorbic acid. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110739. [PMID: 32279792 DOI: 10.1016/j.msec.2020.110739] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 11/20/2019] [Accepted: 02/09/2020] [Indexed: 11/25/2022]
Abstract
Octa-(3-chloropropryl)silsesquioxane was chemically modified with histidine (SSQ-H) and characterized by spectroscopy in the infrared region (FT-IR), X-ray diffraction (XRD), X-ray Dispersive Energy Spectroscopy (EDX), Scanning Electron Microscopy (SEM). The analytical properties of SSQ-H were tested regarding of Cu2+ and Zn2+ adsorption and as an electrochemical sensor for the detection of ascorbic acid. The metal sorption results indicate that maximum amount of Cu2+ and Zn2+ adsorbed (Nfmax) were 1.58 × 10-3 and 5.67 × 10-4 mol g-1, respectively. After Cu2+ and Zn2+ ion adsorption and interaction with potassium hexacyanoferrate (III), the investigated materials displayed electroactivity for ascorbic acid detection. The anodic peak currents responses of a graphite paste electrode containing CuHCFSSQ-H presented a linear response in the concentration range of 4.0 × 10-4 to 4.0 × 10-3 mol L-1 for ascorbic acid detection. The limit of detection was of 2.99 × 10-4 mol L-1, with an amperometric sensitivity of 1.69 μA/mol L-1. The intensity of the anodic peak currents of the graphite paste electrode containing ZnHCFSSQ-H in the concentration range of 9.0 × 10-5 to 9.0 × 10-4 mol L-1 also displayed a linear response. The limit of detection was of 6.76 × 10-5 mol L-1, with an amperometric sensitivity of 0.0206 A/mol L-1.
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Affiliation(s)
- Fernanda Dos Santos Franco
- Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista "Júlio de Mesquita Filho", Departamento de Física e Química, Av. Brasil, 56, CEP. 15385-000 Ilha Solteira, SP, Brazil
| | - Daniela Silvestrini Fernandes
- Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista "Júlio de Mesquita Filho", Departamento de Física e Química, Av. Brasil, 56, CEP. 15385-000 Ilha Solteira, SP, Brazil
| | - Devaney Ribeiro Do Carmo
- Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista "Júlio de Mesquita Filho", Departamento de Física e Química, Av. Brasil, 56, CEP. 15385-000 Ilha Solteira, SP, Brazil.
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15
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Electrode modified with graphene quantum dots supported in chitosan for electrochemical methods and non-linear deconvolution of spectra for spectrometric methods: approaches for simultaneous determination of triclosan and methylparaben. Mikrochim Acta 2020; 187:250. [PMID: 32222835 DOI: 10.1007/s00604-020-04225-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 03/16/2020] [Indexed: 10/24/2022]
Abstract
Two analytical methods were developed using electrochemical and spectrometric techniques for the simultaneous determination of endocrine disruptors triclosan and methylparaben in the monitoring of personal care products. For the electroanalytical analyses, a sensitive electrode based on graphene quantum dots supported in chitosan was employed. Under optimized conditions and a working potential of typically + 0.60 V for triclosan and + 0.81 V (vs. Ag/AgCl) for methylparaben, the calibration plots obtained by differential pulse voltammetry were linear in the range 0.10 to 10.0 μmol L-1. The detection limits were 0.03 and 0.04 μmol L-1 for triclosan and methylparaben, respectively. For the spectrometric method, UV/VIS spectrometry was used with a mathematical processing of non-linear deconvolution. This processing was used to solve the problem of overlapping absorption bands of triclosan (282 nm) and methylparaben (257 nm), which enabled simultaneous determination. The calibration plots by UV/VIS spectrometry were linear in the range 1.0 to 14.0 μmol L-1 with detection limits of 0.42 and 0.37 μmol L-1, respectively, for triclosan and methylparaben. Similar results obtained from the calibration plots of individual analytes suggest that the methods can be applied for individual or simultaneous determination of these species. Both methods were employed in the analysis of five samples of personal care products: toothpaste, antiseptic soap, antiseptic deodorant, shampoo, and a bath kit (soap and shampoo). The statistical tests indicated that there were no significant differences regarding the accuracy and precision of the data provided by the two methods described herein. Graphical abstract Schematic representation for simultaneous determination of triclosan and methylparaben: electrochemical method employing an electrode modified with graphene quantum dots supported in chitosan and spectrometric method applying a non-linear deconvolution of spectrum.
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Moreira F, Santana ER, Spinelli A. Ionic liquid-supported magnetite nanoparticles as electrode modifier materials for estrogens sensing. Sci Rep 2020; 10:1955. [PMID: 32029811 PMCID: PMC7005039 DOI: 10.1038/s41598-020-58931-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 01/20/2020] [Indexed: 12/12/2022] Open
Abstract
This paper reports the application of a carbon paste electrode modified with magnetite nanoparticles and the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate in the electroanalytical determination of 17β-estradiol and estriol. These estrogens are potential endocrine disruptors and thus it is relevant the development of devices for their monitoring. Transmission electron microscopy, scanning electron microscopy and zeta potential techniques were applied to characterization of the modifier materials. In cyclic voltammetry experiments, irreversible oxidation peaks were observed for 17β-estradiol and estriol at +0.320 V and +0.400 V, respectively. The anodic currents obtained were approximately three times greater than those provided by the unmodified electrode due to the presence of magnetic nanoparticles and the ionic liquid, which improved the sensitivity of modified electrode. For the analysis, the parameters of the square-wave voltammetry (scan increment, amplitude and frequency) were optimized by Box-Behnken factorial design for each estrogen. For 17β-estradiol in B-R buffer pH 12.0, the calibration plot was linear from 0.10 to 1.0 μmol L-1, with a detection limit of 50.0 nmol L-1. For estriol in B-R buffer pH 11.0, the linear range was 1.0 to 10.0 μmol L-1, with a detection limit of 300.0 nmol L-1. The modified electrode was applied in the determination of 17β-estradiol and estriol in pharmaceutical formulations and the results were comparable to those obtained using UV/VIS spectrometry. Statistical tests were applied to evaluate the results and it was concluded that there was no significant difference regarding the precision and accuracy of the data provided by the two methods.
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Affiliation(s)
- Fernanda Moreira
- Grupo de Estudos de Processos Eletroquímicos e Eletroanalíticos, Universidade Federal de Santa Catarina, Campus Universitário Reitor João David Ferreira Lima, Departamento de Química - CFM, 88040-900, Florianópolis, SC, Brazil
| | - Edson Roberto Santana
- Grupo de Estudos de Processos Eletroquímicos e Eletroanalíticos, Universidade Federal de Santa Catarina, Campus Universitário Reitor João David Ferreira Lima, Departamento de Química - CFM, 88040-900, Florianópolis, SC, Brazil
| | - Almir Spinelli
- Grupo de Estudos de Processos Eletroquímicos e Eletroanalíticos, Universidade Federal de Santa Catarina, Campus Universitário Reitor João David Ferreira Lima, Departamento de Química - CFM, 88040-900, Florianópolis, SC, Brazil.
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Gerent GG, Spinelli A. Ag-Au core-partial shell bimetallic nanoparticles applied in electrochemical determination of the potential endocrine disruptor oryzalin. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113484] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Bezerra Martins A, Lobato A, Tasić N, Perez-Sanz FJ, Vidinha P, Paixão TR, Moreira Gonçalves L. Laser-pyrolyzed electrochemical paper-based analytical sensor for sulphite analysis. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2019.106541] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Crocomo PZ, Winiarski JP, Barros MR, Latocheski E, Nagurniak GR, Parreira RLT, Siebert DA, Micke GA, Magosso HA, Jost CL. Silver Nanoparticles‐Silsesquioxane Nanomaterial Applied to the Determination of 4‐Nitrophenol as a Biomarker. ELECTROANAL 2019. [DOI: 10.1002/elan.201900217] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Paola Zimmermann Crocomo
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - João Paulo Winiarski
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Marília Reginato Barros
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Eloah Latocheski
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | | | - Renato Luis Tame Parreira
- Universidade de FrancaNúcleo de Pesquisas em Ciências Exatas e Tecnológicas 14404-600 Franca – SP Brazil
| | - Diogo Alexandre Siebert
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Gustavo Amadeu Micke
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Hérica Aparecida Magosso
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Cristiane Luisa Jost
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
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Cai X, Lin C, Foord JS, Compton RG. The Electrochemical Oxidation of Sulphite on Gold Electrodes. ELECTROANAL 2019. [DOI: 10.1002/elan.201900289] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaosheng Cai
- Department of Chemistry, Chemistry Research LaboratoryUniversity of Oxford Mansfield Road Oxford OX1 3TA United Kingdom
| | - Chuhong Lin
- Department of Chemistry, Physical and Theoretical Chemistry LaboratoryUniversity of Oxford South Parks Road Oxford OX1 3QZ United Kingdom
- Institute of Intelligent MachinesChinese Academy of Sciences Hefei 230031 China
| | - John S. Foord
- Department of Chemistry, Chemistry Research LaboratoryUniversity of Oxford Mansfield Road Oxford OX1 3TA United Kingdom
| | - Richard G. Compton
- Department of Chemistry, Physical and Theoretical Chemistry LaboratoryUniversity of Oxford South Parks Road Oxford OX1 3QZ United Kingdom
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Vanoni CR, Winiarski JP, Nagurniak GR, Magosso HA, Jost CL. A Novel Electrochemical Sensor Based on Silsesquioxane/Nickel (II) Phthalocyanine for the Determination of Sulfanilamide in Clinical and Drug Samples. ELECTROANAL 2019. [DOI: 10.1002/elan.201800832] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Caio Raphael Vanoni
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - João Paulo Winiarski
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | | | - Hérica Aparecida Magosso
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
| | - Cristiane Luisa Jost
- Universidade Federal de Santa CatarinaDepartamento de Química 88040-900 Florianópolis – SC Brazil
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22
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Martins FC, Sentanin MA, De Souza D. Analytical methods in food additives determination: Compounds with functional applications. Food Chem 2019; 272:732-750. [DOI: 10.1016/j.foodchem.2018.08.060] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 08/08/2018] [Accepted: 08/14/2018] [Indexed: 12/21/2022]
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