Surface-enhanced Raman scattering of thiram: Quantitative and theoretical analyses

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Windsor-
Autor(es): dc.creatorOliveira, Marcelo J. S.-
Autor(es): dc.creatorMartin, Cibely S.-
Autor(es): dc.creatorRubira, Rafael J. G.-
Autor(es): dc.creatorBatagin-Neto, Augusto-
Autor(es): dc.creatorConstantino, Carlos J. L.-
Autor(es): dc.creatorAroca, Ricardo F.-
Data de aceite: dc.date.accessioned2025-08-21T23:06:58Z-
Data de disponibilização: dc.date.available2025-08-21T23:06:58Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2020-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/jrs.6222-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/229306-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/229306-
Descrição: dc.descriptionThe development of strategies to monitor the applications of pesticides is of primary importance. In the present report, two aspects of the surface-enhanced Raman scattering (SERS) effect of the fungicide thiram were investigated: quantitative analysis using the standard addition method and the thiram adsorption mechanism onto Ag nanostructures using theoretical approach. Experimentally, SERS intensity varies linearly from 1.0 × 10−8 to 4.0 × 10−7 mol/L with thiram concentration leading to a limit of detection of 1.2 × 10−8 mol/L for the band at 560 cm−1 and 1.7 × 10−9 mol/L for 1386 cm−1. The loss of linearity (above 10−6 mol/L) was associated with changes in the Ag colloid aggregation, also indicated by complementary analyses via UV-Vis extinction spectroscopy, dynamic light scattering, and zeta potential. The differences in the spectral profiles observed for thiram Raman powder and SERS are ascribed to S–S cleavage, leading the degraded thiram adsorbing to Ag surface not only through S atoms but also through methyl groups.-
Descrição: dc.descriptionSchool of Technology and Applied Sciences São Paulo State University (UNESP)-
Descrição: dc.descriptionSão Paulo State University (UNESP) Campus of Itapeva-
Descrição: dc.descriptionUniversity of Windsor-
Descrição: dc.descriptionSchool of Technology and Applied Sciences São Paulo State University (UNESP)-
Descrição: dc.descriptionSão Paulo State University (UNESP) Campus of Itapeva-
Idioma: dc.languageen-
Relação: dc.relationJournal of Raman Spectroscopy-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectmechanism of interaction-
Palavras-chave: dc.subjectpesticide-
Palavras-chave: dc.subjectquantitative detection-
Palavras-chave: dc.subjectSERS-
Palavras-chave: dc.subjectthiram-
Título: dc.titleSurface-enhanced Raman scattering of thiram: Quantitative and theoretical analyses-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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