1
|
Fiuza RMD, Padilha J, Maqueira L, Aucélio RQ, Limberger J. Synthesis and application of a highly fluorescent styryl-benzothiadiazole derivative as a chemosensor for ethanol in hydroalcoholic solutions. Spectrochim Acta A Mol Biomol Spectrosc 2022; 271:120913. [PMID: 35077981 DOI: 10.1016/j.saa.2022.120913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/31/2021] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
Two fluorescent D-A-D styryl-benzothiadiazole fluorophores possessing either styryl-BTD-styryl (2) or aryl-BTD-styryl (4) architectures have been synthesized using Heck reactions as key step. Compounds presented absorption in blue region and emission ranging from 531 to 560 nm with positive solvatochromism. Lippert Mattaga plots indicated a substantial effect of solvent polarity over the emission profile. As the fluorescence of the compound 4 was more sensitive to changes in the environment, this compound was evaluated as a probe to chemosensing etanol/water percentage in hydroalcoholic solutions. Good linearity was observed between fluorescence intensity and ethanol content in the range from 40% to 90%. Analyses of commercial solutions of sanitizers and cleaning products (% ethanol = 46%, 70% and 92%) indicate that reference values are within the confidence interval of experimental results produced by the proposed method.
Collapse
Affiliation(s)
- Raquel Mazolli da Fiuza
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil
| | - Juliana Padilha
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil
| | - Luis Maqueira
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil
| | - Ricardo Q Aucélio
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil
| | - Jones Limberger
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil.
| |
Collapse
|
2
|
Almeida JMS, Ribeiro ABP, Toloza CAT, Alves ICB, Santos JRN, De Azevedo LCM, Aucélio RQ, Marques ALB. Simple Voltammetric Determination of Iron in Ethanol and Biodiesel Using a Bismuth Film Coated Glassy Carbon Electrode. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2053701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Joseany M. S. Almeida
- Department of Chemical Technology, (NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, Brazil
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
| | - Ana Beatriz P. Ribeiro
- Department of Chemical Technology, (NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, Brazil
| | - Carlos A. T. Toloza
- Department of Natural and Exact Sciences, Universidad de la Costa, Barranquilla, Colombia
| | - Ismael C. B. Alves
- Department of Chemical Technology, (NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, Brazil
| | - José Ribamar N. Santos
- Department of Chemical Technology, (NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, Brazil
| | - Lorena C. M. De Azevedo
- Department of Chemical Technology, (NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, Brazil
| | - Ricardo Q. Aucélio
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
| | - Aldaléa L. B. Marques
- Department of Chemical Technology, (NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, Brazil
| |
Collapse
|
3
|
Panzl MV, Almeida JMS, Pedrozo-Peñafiel M, Menchaca D, Aucélio RQ, Rodríguez-Haralambides A. Evaluation of Polycyclic Aromatic Hydrocarbons in Dried Leaves of Yerba Mate (Ilex paraguariensis) and Their Extraction into Infusions. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2030770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- María Victoria Panzl
- Facultad de Química, Universidad de la República, Pando, Uruguay
- Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Joseany M. S. Almeida
- Chemistry Department, Pontificia Universidade Católica Do Rio De Janeiro (PUC-Rio), Rio De Janeiro-RJ, Brazil
| | - Marlin Pedrozo-Peñafiel
- Chemistry Department, Pontificia Universidade Católica Do Rio De Janeiro (PUC-Rio), Rio De Janeiro-RJ, Brazil
| | - David Menchaca
- Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Ricardo Q. Aucélio
- Chemistry Department, Pontificia Universidade Católica Do Rio De Janeiro (PUC-Rio), Rio De Janeiro-RJ, Brazil
| | | |
Collapse
|
4
|
Nazarkovsky M, Czech B, Żmudka A, Bogatyrov VM, Artiushenko O, Zaitsev V, Saint-Pierre TD, Rocha RC, Kai J, Xing Y, Gonçalves WD, Veiga AG, Rocco MLM, Safeer SH, Galaburda MV, Carozo V, Aucélio RQ, Caraballo-Vivas RJ, Oranska OI, Dupont J. Structural, optical and catalytic properties of ZnO-SiO2 colored powders with the visible light-driven activity. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113532] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
5
|
Silva LI, Pérez-Gramatges A, Larrude DG, Almeida JM, Aucélio RQ, da Silva AR. Gold nanoparticles produced using NaBH4 in absence and in the presence of one-tail or two-tail cationic surfactants: Characteristics and optical responses induced by aminoglycosides. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126174] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
6
|
Silva WA, de Almeida LG, Feiteira FN, Semaan FS, Aucélio RQ, Dornellas RM, Pacheco WF. Novel Electrochemical Determination of Atorvastatin by Monitoring the Suppression of a Lead Probe. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1773491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Wanderson A. Silva
- Coordenação de Licenciatura em Física, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET-RJ), Petrópolis, Brazil
- Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Instituto de Química, Niterói, Brazil
| | - Leonardo G. de Almeida
- Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Instituto de Química, Niterói, Brazil
| | - Fernanda N. Feiteira
- Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Instituto de Química, Niterói, Brazil
| | - Felipe S. Semaan
- Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Instituto de Química, Niterói, Brazil
| | - Ricardo Q. Aucélio
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
| | - Rafael M. Dornellas
- Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Instituto de Química, Niterói, Brazil
| | - Wagner F. Pacheco
- Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Instituto de Química, Niterói, Brazil
| |
Collapse
|
7
|
Mikhraliieva A, Zaitsev V, Aucélio RQ, da Motta HB, Nazarkovsky M. Benefit of porous silica nanoreactor in preparation of fluorescence carbon dots from citric acid. Nano Ex 2020. [DOI: 10.1088/2632-959x/ab7e0d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Abstract
A facile and robust synthesis of carbon dots (CDs) emitting blue-light in water without activation and stabilization has been developed by pyrolysis of citric acid (CA) adsorbed in silica gel (SiO2) pores. Effect of the host pore size on luminescent properties of SiO2@CDs nanocomposite as well as water suspension of CDs has been studied. The synthesis conditions such as concentration of the precursor, duration of synthesis also have been investigated. It has been demonstrated that upon the thermal treatment of silica gels saturated with CA (60% of maximum loading) at 170 °C for 5–600 min, luminescent CDs are shaped inside the nanoreactor pores. These SiO2@CDs emit photoluminescence centered at 450 nm. Silica-immobilized CDs can be separated from the source molecules and side-products by centrifugation, which allows avoiding the dialysis of the resulted mixture and so improve the scaling of the synthesis. The CDs can be easily released from SiO2@CDs by washing it with water. Water-eluted CDs demonstrate photoluminescence at 447 nm. The smaller pore size of the host and longer time of thermal treatment promote the formation of the CDs with better photoluminescent peak symmetry and higher quantum yield up to 10.1%.
Collapse
|
8
|
da Silva WA, Feiteira FN, Francisco JE, Toloza CAT, Aucélio RQ, Pacheco WF. Pre-concentration of rosuvastatin using solid-phase extraction in a molecularly imprinted polymer and analytical application in water supply. Environ Sci Pollut Res Int 2020; 27:11724-11735. [PMID: 31975002 DOI: 10.1007/s11356-020-07742-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
In this work, it is shown the development and validation of innovative analytical methodology based on solid-phase extraction (SPE) with molecularly imprinted polymers (MIP) as a sorbent associated to UV-Vis spectroscopy to isolate and quantify, respectively, rosuvastatin (RSV) in water samples. For this purpose, porogenic solvent in MIP synthesis and SPE extraction parameters for MIP and non-imprinted polymers (NIP) were evaluated univariately for comparison purposes. The sorptive capacity and characterization studies by infrared spectroscopy and atomic force microscopy showed difference between MIP and NIP. The selectivity study of the MIP-RSV against other statins (simvastatin and atorvastatin) showed that the synthesized MIP can also be applied as a solid phase for isolation and quantitative pre-concentration of RSV and atorvastatin. The conjugation of SPE and UV-Vis spectroscopy in the determination of RSV in aqueous matrices led to large factor of pre-concentration (125 times), limit of detection (LOD) of 3 μg L-1, limit of quantification (LOQ) of 10 μg L-1, precision of 2.87% (n = 10), and accuracy of 83.1% (n = 4).
Collapse
Affiliation(s)
- Wanderson A da Silva
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET-RJ), Campus Petrópolis, Coordenação de Licenciatura em Física, Petrópolis, Brazil.
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Niterói, Brazil.
| | - Fernanda N Feiteira
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Niterói, Brazil
| | - Janaína E Francisco
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Niterói, Brazil
| | - Carlos A T Toloza
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
- Department of Natural and Exact Sciences, Universidad de la Costa, Barranquilla, Colombia
| | - Ricardo Q Aucélio
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
| | - Wagner F Pacheco
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Niterói, Brazil
| |
Collapse
|
9
|
Pinto IA, Toloza CAT, Almeida JMS, da Silva AR, Larrude DG, Aucélio RQ. Quantification of neomycin in rubella vaccine by off/on metal ion mediated photoluminescence from functionalized graphene quantum dots. Spectrochim Acta A Mol Biomol Spectrosc 2019; 220:117139. [PMID: 31146209 DOI: 10.1016/j.saa.2019.117139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/16/2019] [Accepted: 05/16/2019] [Indexed: 06/09/2023]
Abstract
The determination of neomycin sulfate was made using photoluminescent amino-functionalized graphene quantum dots (obtained from hydro-exfoliation of a mixture of citric acid and glutathione). From the several ions tested, Fe3+ was the best mediator to enable an off/on photoluminescence effect used for quantification. The mediation of Fe3+ was found to be crucial as it is responsible for the photoluminescence quenching effect, due to the interaction with quantum dots surface, also having large affinity towards neomycin that removes Fe3+ from the surface of GQDs, consequently, promoting restoration of the original nanomaterial photoluminescence. Such signal restoration was proportional to the neomycin sulfate concentration added. The linearized analytical response covered three orders of magnitude (10-7 to 10-5 mol L-1). The proposed method is an alternative to those requiring labor-intensive procedures for chemical the derivatization of neomycin (due to the lack of chromophore groups in aminoglycosides). The method was successfully tested in the analysis of rubella vaccine containing trace residues of neomycin and in pharmaceutical compositions containing neomycin sulfate after solid phase extraction using an aminoglycoside imprinted polymer to improve selectivity in determinations.
Collapse
Affiliation(s)
- Igor Araújo Pinto
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil
| | - Carlos A T Toloza
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil; Chemistry Program, Universidad del Atlántico, Puerto Colombia, Atlántico, Colombia
| | - Joseany M S Almeida
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil
| | - Andrea R da Silva
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET/RJ), 27600-000 Valença, RJ, Brazil
| | - Dunieskys G Larrude
- MackGraphe-Graphene and Nanomaterial Research Center, Mackenzie Presbyterian University, 01302-907 São Paulo, Brazil
| | - Ricardo Q Aucélio
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil.
| |
Collapse
|
10
|
Toloza CAT, Almeida JMS, Khan S, Dos Santos YG, da Silva AR, Aucélio RQ. Kanamycin detection at graphene quantum dot-decorated gold nanoparticles in organized medium after solid-phase extraction using an aminoglycoside imprinted polymer. MethodsX 2019; 5:1605-1612. [PMID: 30622923 PMCID: PMC6313822 DOI: 10.1016/j.mex.2018.11.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 11/27/2018] [Indexed: 11/01/2022] Open
Abstract
This is a description of the indirect determination of kanamycin sulfate though the photoluminescence enhancement of an aqueous dispersion of amino-functionalized graphene quantum dots (amino-GQDs) coupled with gold nanoparticles (AuNPs) in a cationic surfactant-rich medium. Specifically, cetyltrimethylammonium bromide (CTAB) was used as the cationic surfactant in our work. Previously, solid phase extraction with a cartridge packed with aminoglycoside-selective imprinted polymer ensured selectivity in kanamycin determination in yellow-fever vaccine and veterinary pharmaceutical samples. The proposed method has trace analysis capability and it is simple to perform as it does not involve the use of toxic reagents employed for chemical derivatization of aminoglycoside antibiotics.
Collapse
Affiliation(s)
- Carlos A T Toloza
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil.,Chemistry Program, Universidad del Atlantico, Puerto Colombia, Colombia
| | - Joseany M S Almeida
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil
| | - Sarzamin Khan
- Department of Chemistry, University of Swabi, Khyber Pakhtunkhwa, Anbar, 23561, Pakistan
| | - Yasmin G Dos Santos
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil
| | - Andrea R da Silva
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET/RJ), 27600-000, Valença, RJ, Brazil
| | - Ricardo Q Aucélio
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil
| |
Collapse
|
11
|
da Cunha ALM, Osorio AC, Toloza CA, Almeida JM, Khan S, Aucélio RQ. Determination of varenicline after photochemical fluorescence enhancement using spectrofluorimetry and high-performance liquid chromatography. Microchem J 2019. [DOI: 10.1016/j.microc.2018.09.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Toloza CA, Almeida JM, Khan S, dos Santos YG, da Silva AR, Romani EC, Larrude DG, Freire FL, Aucélio RQ. Gold nanoparticles coupled with graphene quantum dots in organized medium to quantify aminoglycoside anti-biotics in yellow fever vaccine after solid phase extraction using a selective imprinted polymer. J Pharm Biomed Anal 2018; 158:480-493. [DOI: 10.1016/j.jpba.2018.05.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/29/2018] [Accepted: 05/30/2018] [Indexed: 12/21/2022]
|
13
|
Pazini A, Maqueira L, Avila HC, Valente FM, Aderne RE, Back D, Aucélio RQ, Cremona M, Limberger J. Phenoxy-benzothiadiazole dyes: Synthesis, photophysical properties and preliminary application in OLEDs. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.06.052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
14
|
Toloza CA, Khan S, Silva RL, Romani EC, Larrude DG, Louro SR, Freire FL, Aucélio RQ. Photoluminescence suppression effect caused by histamine on amino-functionalized graphene quantum dots with the mediation of Fe 3+ , Cu 2+ , Eu 3+ : Application in the analysis of spoiled tuna fish. Microchem J 2017. [DOI: 10.1016/j.microc.2017.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
15
|
Pazini A, Maqueira L, Stieler R, Aucélio RQ, Limberger J. Synthesis, characterization and photophysical properties of luminescent non-symmetric 4-pyridyl benzothiadiazole derivatives. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
16
|
Miranda-Andrades JR, Pérez-Gramatges A, Pandoli O, Romani EC, Aucélio RQ, da Silva AR. Spherical gold nanoparticles and gold nanorods for the determination of gentamicin. Spectrochim Acta A Mol Biomol Spectrosc 2017; 172:126-134. [PMID: 27130828 DOI: 10.1016/j.saa.2016.04.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 03/19/2016] [Accepted: 04/08/2016] [Indexed: 06/05/2023]
Abstract
Gentamicin is an antibiotic indicated to treat mastitis in dairy cattle and for the treatment of bacterial resistance in the context of hospital infections. The effect caused by gentamicin on the optical properties of gold nanoparticles aqueous dispersions were used to develop quantitative methods to determine this antibiotic. Two different aqueous dispersions, one containing spherical Au nanoparticles (AuNPs) and the other containing Au nanorods (AuNRs), had their conditions adjusted to enable a stable and sensitive response towards gentamicin. The use of AuNPs, with measurement at 681nm of the rising coupling plasmon band, enabled a limit of detection (LOD) of 0.4ngmL-1 (0.02ng absolute LOD), ten times lower than the one achieved by measuring the decreasing of the longitudinal surface plasmon resonance band (at 662nm). The linear analytical response of AuNPs measured at 681nm did not require rationing of signal values to correct for linearity. Stability of the analytical response resulted in intermediary precision below 2%. No significant interference was imposed by excipients traditionally present in injectable solutions for veterinary use. Percent recoveries obtained in such formulations were between 94.5 and 98.2% regardless the existence of any difference in the proportion of the compounds known as gentamicin (C1, C1a and C2) in standard and in the samples. The method requires no derivatization with toxic reagents as usually is required in other spectroscopic approaches.
Collapse
Affiliation(s)
- Jarol R Miranda-Andrades
- Chemistry Department, Pontifícia Universidade Católica do Rio de Janeiro, 22451-900, Rio de Janeiro, RJ, Brazil
| | - Aurora Pérez-Gramatges
- Chemistry Department, Pontifícia Universidade Católica do Rio de Janeiro, 22451-900, Rio de Janeiro, RJ, Brazil
| | - Omar Pandoli
- Chemistry Department, Pontifícia Universidade Católica do Rio de Janeiro, 22451-900, Rio de Janeiro, RJ, Brazil
| | - Eric C Romani
- Physics Department, Pontifícia Universidade Católica do Rio de Janeiro, 22451-900 Rio de Janeiro, RJ, Brazil
| | - Ricardo Q Aucélio
- Chemistry Department, Pontifícia Universidade Católica do Rio de Janeiro, 22451-900, Rio de Janeiro, RJ, Brazil.
| | - Andrea R da Silva
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca-CEFET/RJ, 27600-000 Valença, RJ, Brazil
| |
Collapse
|
17
|
Lima JL, Peréz-Gramatges A, Aucélio RQ, da Silva AR. Improved quantum dots fluorescence quenching using organized medium: A study of the effect of naphthoquinones aiming the analysis of plant extracts. Microchem J 2013. [DOI: 10.1016/j.microc.2013.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
18
|
de Souza CF, Martins RKS, da Silva AR, da Cunha ALMC, Aucélio RQ. Determination of enrofloxacin by room-temperature phosphorimetry after solid phase extraction on an acrylic polymer sorbent. Spectrochim Acta A Mol Biomol Spectrosc 2013; 100:51-58. [PMID: 22386147 DOI: 10.1016/j.saa.2012.01.043] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 01/06/2012] [Accepted: 01/18/2012] [Indexed: 05/31/2023]
Abstract
A phosphorimetric method was developed to enable the determination of enrofloxacin using photochemical derivatization which was used to both improve detection limits and to minimize the uncertainty of measurements. Phosphorescence was induced on cellulose containing TlNO(3). Absolute limit of detection at the ng range and linear analytical response over three orders of magnitude were achieved. A metrological study was made to obtain the combined uncertainty value and to identify that the precision was mainly affected by the changing of substrates when measuring the signal from each replicate. Pharmaceutical formulations containing enrofloxacin were successfully analyzed by the method and the results were similar to the ones achieved using a HPLC method. A solid phase extraction on an acrylic polymer was optimized to separate enrofloxacin from interferents such as diclofenac and other components from biological matrices, which allowed the successful use of the method in urine analysis.
Collapse
Affiliation(s)
- Cabrini F de Souza
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro 22451-900, Brazil
| | | | | | | | | |
Collapse
|
19
|
Osório ACP, da Cunha ALMC, Khan S, Ponciano CR, Aucélio RQ. Spectrofluorimetric determination of tetrabenazine after photochemical derivatization in basic medium. Spectrochim Acta A Mol Biomol Spectrosc 2013; 100:166-170. [PMID: 22591799 DOI: 10.1016/j.saa.2012.04.060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 04/07/2012] [Accepted: 04/13/2012] [Indexed: 05/31/2023]
Abstract
Photochemical derivatization is proposed for the spectrofluorimetric determination of tetrabenazine (TBZ). A central composite design was used to adjust experimental conditions (60 min of UV in a 0.45 mol L(-1) NaOH solution) enabling the improvement of the analyte signal-to-blank ratio of one order of magnitude, when compared to the TBZ original fluorescence. Limit of quantification was 4.7×10(-8) mol L(-1) but the detection power can be improved at least 10 times using solid phase extraction that also allows the separation of the analyte from matrix components, enabling the analysis of biologic fluids. Linear range covered at least three orders of magnitude. The combined uncertainty of the determination (at a 5×10(-6) mol L(-1)) was 16%. Recoveries of TBZ in the analyses of a pharmaceutical formulation were in agreement with the ones obtained using a HPLC method. Recovery in saliva (5×10(-7) mol L(-1) of TBZ) was 90±3% (n=3). The procedure minimizes the use of toxic chemical derivatization reagents and the generation of hazardous waste.
Collapse
Affiliation(s)
- Ana C P Osório
- Chemistry Department, Pontifícia Universidade Católica do Rio de Janeiro, 22451-900 Rio de Janeiro, Brazil
| | | | | | | | | |
Collapse
|
20
|
Carvalho JM, Leandro KC, da Silva AR, Aucélio RQ. Selective Determination of Rutin by Fluorescence Attenuation of the CdS-2-mercaptopropionic Acid Nanocrystal Probe. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.704534] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
21
|
Aucélio RQ, Peréz-Cordovés AI, Xavier Lima JL, Ferreira ABB, Esteva Guas AM, da Silva AR. Determination of lapachol in the presence of other naphthoquinones using 3MPA-CdTe quantum dots fluorescent probe. Spectrochim Acta A Mol Biomol Spectrosc 2013; 100:155-160. [PMID: 22591798 DOI: 10.1016/j.saa.2012.04.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 03/20/2012] [Accepted: 04/05/2012] [Indexed: 05/31/2023]
Abstract
3MPA-CdTe QDs in aqueous dispersion was used as a fluorescent probe for the determination of lapachol, a natural naphthoquinone found in plants of the Bignoniaceae family genus Tabebuia. Working QDs dispersions (4.5×10(-8) mol L(-1) of QDs) was prepared in aqueous media containing Tris-HCl buffer pH 7.4 and methanol (10% in volume). The excitation was made at 380 nm with signal measurement at 540 nm. To establish a relationship between fluorescence (corrected to inner filter effect) and concentration of lapachol, a Stern-Volmer model was used. The linear range obtained was from 1.0×10(-5) to 1.0×10(-4) mol L(-1). The limit of detection (x(b)-3s(b)) was 8.0×10(-6) mol L(-1). The 3MPA-CdTe QDs probe was tested in the determination of lapachol in urine, previously cleansed in an acrylic polymer. The average recovery was satisfactory.
Collapse
Affiliation(s)
- Ricardo Q Aucélio
- Chemistry Department, Pontifícia Universidade Católica do Rio de Janeiro, 22451-900 Rio de Janeiro, RJ, Brazil
| | | | | | | | | | | |
Collapse
|
22
|
Carvalho JM, Silva ARD, Cunha ALMCD, Aucélio RQ, Alberti ALM, Leandro KC. Voltammetric determination of sibutramine in beverages and in pharmaceutical formulations. QUIM NOVA 2012. [DOI: 10.1590/s0100-40422012000500023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
23
|
Marques FFDC, da Cunha ALMC, Aucélio RQ. Selective Spectrofluorimetric Method and Uncertainty Calculation for the Determination of Camptothecin in the Presence of Irinotecan and Topotecan. ANAL LETT 2010. [DOI: 10.1080/00032710903402408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
24
|
Cunha ALMCD, Ziolli RL, Aucélio RQ. Synchronous scanning phosphorimetry for the selective determination of chrysene: a metrological study. QUIM NOVA 2010. [DOI: 10.1590/s0100-40422010000600016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
25
|
Rodrigues C, Batista AA, Aucélio RQ, Teixeira LR, Visentin LDC, Beraldo H. Spectral and electrochemical studies of ruthenium(II) complexes with N4-methyl-4-nitrobenzaldehyde and N4-methyl-4-nitrobenzophenone thiosemicarbazone: Potential anti-trypanosomal agents. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.06.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
26
|
Marques FFC, de Souza CF, Figueiredo FS, Aucélio RQ. Selective Determination of Harmol by Room-Temperature Phosphorimetry: A Comparative Performance with Micellar Electrokinetic Capillary Chromatography. ANAL LETT 2008. [DOI: 10.1080/00032710802122339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
27
|
Finete VDLM, Arissawa M, Aucélio RQ. Fluorimetric method for the determination of erythromycin using a photochemical derivatization approach. J BRAZIL CHEM SOC 2008. [DOI: 10.1590/s0103-50532008000700028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
28
|
Saint'Pierre TD, Maranhão TDA, Frescura VL, Curtius AJ, Aucélio RQ. Determination of Cd and Pb in fuel ethanol by filter furnace electrothermal atomic absorption spectrometry. QUIM NOVA 2008. [DOI: 10.1590/s0100-40422008000700005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
29
|
de Souza RM, Saraceno AL, Duyck C, da Silveira CLP, Aucélio RQ. Determination of Fe, Ni and V in asphaltene by ICP OES after extraction into aqueous solutions using sonication or vortex agitation. Microchem J 2007. [DOI: 10.1016/j.microc.2007.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
30
|
Cardoso CE, Pacheco WF, Sarubi R, Ribeiro MLN, Farias PAM, Aucélio RQ. Voltammetric Determination of Copper and Lead in Gasoline Using Sample Preparation as Microemulsions. ANAL SCI 2007; 23:1065-9. [PMID: 17878579 DOI: 10.2116/analsci.23.1065] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A voltammetric method for the determination of Cu(II) and Pb(II) in gasoline using sample preparation as three-component solutions (gasoline:propan-1-ol:water, 25:60:15 v/v/v) is proposed. HNO(3) was employed as a supporting electrolyte and to allow the use of aqueous inorganic standards for calibration, even if the analyte species originally in gasoline is present as a metallo-organic form. A square-wave anodic sequential determination was used by measuring the stripping current of Cu(II) (at +104 mV) using a glassy carbon electrode (GCE) and, in a second run, measuring the Pb(II) stripping current (at -470 mV) using a bismuth-film deposited on the surface of the GCE. The method allowed the quantification of 1.7 x 10(-9) mol L(-1) of Cu and 1.4 x 10(-10) mol L(-1) of Pb employing a 1500-s accumulation time. Recovery tests using analyte spiked three-component solutions prepared with commercial gasoline samples enabled recoveries of Cu and Pb from 97 +/- 8 to 102 +/- 5%.
Collapse
Affiliation(s)
- Carlos E Cardoso
- Natural and Technological Science Center, Universidade Severino Sombra, Brazil
| | | | | | | | | | | |
Collapse
|
31
|
Cardoso CE, Aucélio RQ. Determination of benzo[b]naphtho[2,3-d]thiophene (BNT) in sediments using selective heavy atom induced room-temperature phosphorimetry. J BRAZIL CHEM SOC 2006. [DOI: 10.1590/s0103-50532006000700019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
32
|
de Souza RM, Meliande AL, da Silveira CL, Aucélio RQ. Determination of Mo, Zn, Cd, Ti, Ni, V, Fe, Mn, Cr and Co in crude oil using inductively coupled plasma optical emission spectrometry and sample introduction as detergentless microemulsions. Microchem J 2006. [DOI: 10.1016/j.microc.2006.01.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
33
|
|
34
|
Cardoso CE, Farias PAM, Martins ROR, Aucélio RQ. Square‐Wave and Differential‐Pulse Adsorptive Stripping Voltammetry for Ultra‐Trace Determination of the Anti‐Angiogenic Drug Thalidomide in the Presence of Concomitant Drugs. ANAL LETT 2005. [DOI: 10.1081/al-200060935] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
35
|
Aucélio RQ, Doyle A, Pizzorno BS, Tristão MLB, Campos RC. Electrothermal atomic absorption spectrometric method for the determination of vanadium in diesel and asphaltene prepared as detergentless microemulsions. Microchem J 2004. [DOI: 10.1016/j.microc.2004.02.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
36
|
Saint'Pierre T, Aucélio RQ, Curtius AJ. Trace elemental determination in alcohol automotive fuel by electrothermal atomic absorption spectrometry. Microchem J 2003. [DOI: 10.1016/s0026-265x(03)00054-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
37
|
Arruda AF, Aucélio RQ. Room-temperature phosphorimetry for the selective determination of yohimbine in the presence of reserpine-like indolic alkaloids. ANAL SCI 2002; 18:831-4. [PMID: 12137383 DOI: 10.2116/analsci.18.831] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Andréa F Arruda
- Departamento de Química da Pontifícia Universidade Católica do Rio de Janeiro, RJ, Brazil
| | | |
Collapse
|