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Farouil L, Duchaudé Y, Zozo L, Sylvestre M, Lafay F, Marote P, Cebrián-Torrejón G. Cyclic voltammetry of immobilized particles as an alternative pesticide screening method for Aedes aegypti mosquitoes. J Solid State Electrochem 2023. [DOI: 10.1007/s10008-023-05398-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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Maciel JV, da Silveira GD, Durigon AMM, Fatibello-Filho O, Dias D. Use of carbon black based electrode as sensor for solid-state electrochemical studies and voltammetric determination of solid residues of lead. Talanta 2022; 236:122881. [PMID: 34635261 DOI: 10.1016/j.talanta.2021.122881] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/25/2021] [Accepted: 09/10/2021] [Indexed: 12/27/2022]
Abstract
For the first time carbon black based electrode modified with paraffin was applied as a sensor on voltammetry of immobilized microparticles (VIMP) approach for determination of lead solid residues in hair dye samples. The solid microparticles of Pb(II) (Pb(CH3COO)2(s)) immobilized into the carbon paste sensor containing carbon black and paraffin were firstly reduced at initial potentials and further reoxidized at around -0.60 V during anodic scan. Electroanalytical parameters as well as supporting electrolyte composition, and pH were also evaluated. An analytical curve in 0.2 mol L-1 phosphate buffer solution (pH 5.0) from 0.04 to 3.2 μg (R2 = 0.999) with detection and quantification limits of 4 and 13 ng, respectively, were achieved. The method was applied to quantify lead solid residues in hair dye samples without previous mineralization or complex sample pre-treatment. Besides adequate repeatability, stability and selectivity of the developed sensor based on VIMP features, the method using carbon black based sensor was considered advantageous comparing to the results recorded by a spectrometric method (relative error lower than 8%) from several analytical viewpoints.
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Affiliation(s)
- Juliana Villela Maciel
- School of Chemical and Food, Federal University of Rio Grande, Av. Itália, km 8, P. O. Box 474, Rio Grande, 96203-900, RS, Brazil
| | - Géssica Domingos da Silveira
- Institute of Chemistry, State University of Campinas, R. Josué de Castro 126, Cidade Universitária, Campinas, 13083861, SP, Brazil
| | - Ana Maria Munaretto Durigon
- School of Chemical and Food, Federal University of Rio Grande, Av. Itália, km 8, P. O. Box 474, Rio Grande, 96203-900, RS, Brazil
| | - Orlando Fatibello-Filho
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís km 235, P. O. Box 676, São Carlos, 13560-970, SP, Brazil
| | - Daiane Dias
- School of Chemical and Food, Federal University of Rio Grande, Av. Itália, km 8, P. O. Box 474, Rio Grande, 96203-900, RS, Brazil.
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Oliveira MLS, Neckel A, Silva LFO, Dotto GL, Maculan LS. Environmental aspects of the depreciation of the culturally significant Wall of Cartagena de Indias - Colombia. CHEMOSPHERE 2021; 265:129119. [PMID: 33280849 DOI: 10.1016/j.chemosphere.2020.129119] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 05/21/2023]
Abstract
Among the diverse archeological relics of the past, the Cartagena de Indias Wall is one of the greatest representations of European cultural architecture in South America. To assess the implication of contamination on the depreciation of the culturally significant Wall of Cartagena de Indias - Colombia, a detailed, multi-analytical approach was conducted on components of the wall. Accumulated ultra-fine particles (UFPs) and superficial nano-particles (NPs) containing hazardous elements (HEs) on the wall were identified in an attempt to understand whether atmospheric pollution is hastening the depreciation of the structure itself. Mortar which at one point held the stones together is now weak and has fallen away in places. Irreparable damage is being done by salt spray, acid rain and the site's tropical humid climate. Several HEs and organic compounds found within the local environment are also contributing to the gradual deterioration of the construction. In this study, advanced microscopy analyses have been applied to understand the properties of UFPs and NPs deposited onto the wall's weathered external walls through exposure to atmospheric pollution. Several materials identified by X-Ray Diffraction (XRD) can be detected using high-resolution transmission electron microscopy (HR-TEM) and field emission scanning electron microscope (FE-SEM). The presence of anglesite, gypsum, hematite containing HEs, and several organic compounds modified due to moisture and contamination was found. Black crusts located on the structure could potentially serve as a source of HEs pollution and a probable hazard to not only to the ecosystem but also to human health.
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Affiliation(s)
- Marcos L S Oliveira
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia; Faculdade Meridional, IMED, 304, Passo Fundo, RS, 99070-220, Brazil; Universidad de Lima, Departamento de Ingeniería civil y Arquitectura, Avenida Javier Prado Este 4600, Santiago de Surco, 1503, Peru
| | - Alcindo Neckel
- Faculdade Meridional, IMED, 304, Passo Fundo, RS, 99070-220, Brazil.
| | - Luis F O Silva
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia
| | - Guilherme L Dotto
- Universidade Federal de Santa Maria, Chemistry Department, Avenida Roraima 1000, Santa Maria, RS, Brazil
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Cechin CN, Cabral BN, Bublitz F, Bortolotto T, da Silveira GD, de Carvalho LM, Cargnelutti R, Abram U, Nakagaki S, Lang ES, Tirloni B. Nuclearity growth of new Pd II complexes induced by the electronic effect of selenium-containing ligands. NEW J CHEM 2021. [DOI: 10.1039/d1nj03710b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This work provides a systematic study of how the electronic effect of EDG or EWG in selenium-containing ligands influences the nuclearity of PdII complexes. The solid-state, solution and gas phase behaviors were evaluated for the complexes.
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Affiliation(s)
- Camila N. Cechin
- Laboratório de Materiais Inorgânicos, Departamento de Química – Universidade Federal de Santa Maria, 97105-900 - Santa Maria, RS, Brazil
| | - Bruno N. Cabral
- Laboratório de Materiais Inorgânicos, Departamento de Química – Universidade Federal de Santa Maria, 97105-900 - Santa Maria, RS, Brazil
| | - Fabrício Bublitz
- Laboratório de Materiais Inorgânicos, Departamento de Química – Universidade Federal de Santa Maria, 97105-900 - Santa Maria, RS, Brazil
| | - Tanize Bortolotto
- Laboratório de Materiais Inorgânicos, Departamento de Química – Universidade Federal de Santa Maria, 97105-900 - Santa Maria, RS, Brazil
| | - Géssica D. da Silveira
- Instituto de Química, Universidade Estadual de Campinas, Rua Josué de Castro 126 Cidade Universitária, Campinas, SP 13081361, Brazil
| | - Leandro M. de Carvalho
- Laboratório de Análises Químicas – LACHEM, Departamento de Química – Universidade Federal de Santa Maria, Santa Maria, RS 97110970, Brazil
| | - Roberta Cargnelutti
- Laboratório de Materiais Inorgânicos, Departamento de Química – Universidade Federal de Santa Maria, 97105-900 - Santa Maria, RS, Brazil
| | - Ulrich Abram
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34-36, D-14195 Berlin, Germany
| | - Shirley Nakagaki
- Laboratório de Bioinorgânica e Catálise, Departamento de Química – Universidade Federal do Paraná, 81531-990 - Curitiba, PR, Brazil
| | - Ernesto S. Lang
- Laboratório de Materiais Inorgânicos, Departamento de Química – Universidade Federal de Santa Maria, 97105-900 - Santa Maria, RS, Brazil
| | - Bárbara Tirloni
- Laboratório de Materiais Inorgânicos, Departamento de Química – Universidade Federal de Santa Maria, 97105-900 - Santa Maria, RS, Brazil
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da Silveira GD, Quero RF, Bressan LP, Bonacin JA, de Jesus DP, da Silva JAF. Ready-to-use 3D-printed electrochemical cell for in situ voltammetry of immobilized microparticles and Raman spectroscopy. Anal Chim Acta 2020; 1141:57-62. [PMID: 33248662 DOI: 10.1016/j.aca.2020.10.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/07/2020] [Accepted: 10/14/2020] [Indexed: 01/24/2023]
Abstract
We report in this communication a ready-to-use fused deposition modeling (FDM) based 3D-printed spectroelectrochemical cell to perform for the first time voltammetry of immobilized microparticles (VIMP) and Raman spectroscopy in situ using acrylonitrile butadiene styrene (ABS) as the filament material for printing. The 3D-printed cell was applied to evaluate solid state electrochemical behavior of tadalafil as a proof-of-concept. Several advantages were achieved in the use of the developed device, such as less manipulation of the working electrode, monitoring the same region of the solid microparticles before and after electrochemical measurements, better control of the laser incidence, low-cost and low-time production. Furthermore, the device was printed in a single-step, without handling to assembly and it has an estimated material cost of approximately 2 $. The use of 3D-printing technology was significantly important to integrate Raman spectroscopic method with VIMP measurements and to support mechanism elucidation and characterization of the compounds with less manipulation of the working electrode, avoiding loss of solid products formed from electrochemical reactions.
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Affiliation(s)
| | | | - Lucas Paines Bressan
- Chemistry Institute, State University of Campinas, Campinas, SP, 13083-861, Brazil
| | | | - Dosil Pereira de Jesus
- Chemistry Institute, State University of Campinas, Campinas, SP, 13083-861, Brazil; Instituto Nacional de Ciência e Tecnologia Em Bioanalítica (INCTBio), Campinas, SP, Brazil
| | - José Alberto Fracassi da Silva
- Chemistry Institute, State University of Campinas, Campinas, SP, 13083-861, Brazil; Instituto Nacional de Ciência e Tecnologia Em Bioanalítica (INCTBio), Campinas, SP, Brazil.
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