Determination of temporary dye Basic Red 51 in commercial hair dye, river water and wastewater from hairdressing salon using graphite-epoxy composite electrode modified with magnetic nanoparticles

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorFaculty of Sciences and Biosciences-
Autor(es): dc.creatorCorrêa, Gláucia Tinoco [UNESP]-
Autor(es): dc.creatorSouza, João Carlos de [UNESP]-
Autor(es): dc.creatorSilva, João Pedro [UNESP]-
Autor(es): dc.creatorPividori, Maria Isabel-
Autor(es): dc.creatorZanoni, Maria Valnice Boldrin [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:32:21Z-
Data de disponibilização: dc.date.available2022-02-22T00:32:21Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.microc.2020.105485-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/201018-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/201018-
Descrição: dc.descriptionThe present work reports the development of a simple, fast and inexpensive method for the determination of Basic Red 51 (BR 51) dye, known to be widely employed in comercial formulations of temporary dyes. The method involved the use of graphite-epoxy magnetic composite electrode (GEMCE) modified by carboxyl-functionalyzed magnetic nanoparticles (CFMNs) for the pre-concentration of the dye aiming at increasing the electrode sensitivity through the application of square wave voltammetry. The pre-concentration of BR 51 occurs via strong interaction between charged imidazole group present in the dye and the carboxyl group in the magnetic nanoparticles. This reaction is the basis for BR 51 determination through a well-defined peak at +0.89 V vs. Ag/AgCl, which is attributed to the oxidation of tertiary amine after the transfer of one electron and one proton. Under optimized conditions, which consisted of 30 sec. exposure of the GEMCE/CFMNs to BR 51 dye immersed in phosphate buffer (pH 7.0), an analytical curve was constructed in the concentration range of 1.50 × 10−6 mol L−1 to 5.50 × 10−5 mol L−1 using square wave voltammetry (SWV). The limits of detection and quantification obtained were 1.19 × 10−7 and 3.97 × 10−7 mol L−1, respectively. The proposed method was successfully applied for the determination of BR 51 dye in samples of commercial hair dye, wastewater from hairdressing salon, and river water, and was validated using high performance chromatography coupled to diode array detector (HPLC-DAD).-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry Department of Analytical Chemistry National Institute of Alternative Technologies for the Detection Toxicological Evaluation and Removal of Micropollutants and Radioactivies (INCT-DATREM), Rua Professor Francisco Degni, 55-
Descrição: dc.descriptionUniversitat Autònoma de Barcelona (UAB) Department of Chemistry Faculty of Sciences and Biosciences, Bellaterra-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry Department of Analytical Chemistry National Institute of Alternative Technologies for the Detection Toxicological Evaluation and Removal of Micropollutants and Radioactivies (INCT-DATREM), Rua Professor Francisco Degni, 55-
Idioma: dc.languageen-
Relação: dc.relationMicrochemical Journal-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBasic Red 51 determination-
Palavras-chave: dc.subjectElectroanalysis of hair dyes-
Palavras-chave: dc.subjectHair dye analysis in wastewater-
Palavras-chave: dc.subjectMagnetic nanoparticles modified electrode-
Título: dc.titleDetermination of temporary dye Basic Red 51 in commercial hair dye, river water and wastewater from hairdressing salon using graphite-epoxy composite electrode modified with magnetic nanoparticles-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.