Modified Magnetic Nanocomposites with 2-Aminobenzothiazole as a Selective Adsorbent for Dispersive Magnetic Micro-solid Phase Extraction of Ultra-trace Amounts of Cadmium in Environmental and Food Samples by Thermospray Flame Furnace Atomic Absorption Spectrometry

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorCidade Universitária-
Autor(es): dc.contributorUniversidade Estadual de Londrina (UEL)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorde Oliveira, Pâmela Caires-
Autor(es): dc.creatorRoveda, Liriana Mara-
Autor(es): dc.creatorRuis, Lucimara Ramires Pereira-
Autor(es): dc.creatordos Santos, Paula Mantovani-
Autor(es): dc.creatorTarley, César Ricardo Teixeira-
Autor(es): dc.creatorde Carvalho, Adriana Evaristo-
Autor(es): dc.creatorRoman, Daiane-
Autor(es): dc.creatorCorazza, Marcela Zanetti-
Data de aceite: dc.date.accessioned2025-08-21T18:27:11Z-
Data de disponibilização: dc.date.available2025-08-21T18:27:11Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s12161-025-02790-2-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300259-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300259-
Descrição: dc.descriptionThis study reports for the first time the synthesis and analytical performance of two novel magnetic nanocomposites-based silica-coated and carbon nanotubes thiol (2-aminobenzothiazole – ABT) functionalized as adsorbents for preconcentration of cadmium ions in water, cigarette and food samples by dispersive magnetic micro-solid phase extraction (DM-µ-SPE) and determination by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS). The synthesized materials were characterized by Fourier infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), nitrogen adsorption–desorption, and thermogravimetric analysis (TGA). The pH was investigated univariately while other parameters that influence the DM-µ-SPE were investigated using a two-level (24) full factorial design. As optimized conditions, pH 7.0 and 6.0; 20 mg of nanoparticles; HNO3 1.5 M as eluent and 2 min and 8 min as elution time, were found to m-SiO2-ABT and MMWCNT-ABT, respectively. The method also showed good linearity in the range of 1.0 to 10.0 µg L−1 (r2 ≥ 0.99) and of 2.0 to 20.0 µg L−1 (r2 ≥ 0.99), and low limits of detection (0.02 and 0.11 µg L−1) to m-SiO2-ABT and MMWCNT-ABT, respectively. The nanocomposites, m-SiO2-ABT and MMWCNT-ABT, can be regenerated without significant adsorption capacity loss for ten cycles, yielding recovery percentages of analytical signal of 93.04% and of 103.2%, respectively. The analysis of different water samples (tap water and mineral water), tobacco, green tea, and rice was carried out without matrix interference, yielding recovery values ranging from 88 to 104%.-
Descrição: dc.descriptionFaculdade de Ciências Exatas E Tecnologia Universidade Federal da Grande Dourados (UFGD) Cidade Universitária, Rod. Dourados-Itahum, Km 12, MS CEP-
Descrição: dc.descriptionDepartamento de Química Universidade Estadual de Londrina (UEL), Rod. Celso Garcia Cid, PR 445 Km 380, Campus Universitário, PR CEP-
Descrição: dc.descriptionInstituto de Química Universidade Estadual Paulista “Julio de Mesquita Filho” (UNESP), Av. Prof. Francisco Degni, 55, Jardim Quintadinha, SP CEP-
Descrição: dc.descriptionInstituto de Química Departamento de Química Analítica Instituto Nacional de Ciência E Tecnologia de Bioanalítica (INCTBio) Universidade Estadual de Campinas (UNICAMP) Cidade Universitária, SP CEP-
Descrição: dc.descriptionInstituto de Química Universidade Estadual Paulista “Julio de Mesquita Filho” (UNESP), Av. Prof. Francisco Degni, 55, Jardim Quintadinha, SP CEP-
Idioma: dc.languageen-
Relação: dc.relationFood Analytical Methods-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDispersive microextraction solid phase-
Palavras-chave: dc.subjectFunctionalization-
Palavras-chave: dc.subjectMagnetic adsorbents-
Palavras-chave: dc.subjectMetal-
Palavras-chave: dc.subjectThiol ligands-
Palavras-chave: dc.subjectTS-FF-AAS-
Título: dc.titleModified Magnetic Nanocomposites with 2-Aminobenzothiazole as a Selective Adsorbent for Dispersive Magnetic Micro-solid Phase Extraction of Ultra-trace Amounts of Cadmium in Environmental and Food Samples by Thermospray Flame Furnace Atomic Absorption Spectrometry-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.