Electrothermal AAS determination of Ni in soft drinks using Co as the internal standard

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorDe Oliveira, Adriana Paiva-
Autor(es): dc.creatorGomes Neto, José Anchieta-
Autor(es): dc.creatorNóbrega, Joaquim A.-
Autor(es): dc.creatorOliveira, Pedro Vitoriano-
Data de aceite: dc.date.accessioned2025-08-21T18:55:33Z-
Data de disponibilização: dc.date.available2025-08-21T18:55:33Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2005-07-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/224587-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/224587-
Descrição: dc.descriptionA method for the direct determination of Ni in soft drinks by graphite furnace atomic absorption spectrometry using a transversely heated graphite atomizer (THGA), Zeeman-effect background corrector, and Co as the internal standard (IS) is proposed. Magnesium nitrate was used to stabilize both Ni and Co. All diluted samples (1+1) in 0.2% (v/v) HNO3 and reference solutions [5.0-50 μg L-1 Ni in 0.2% (v/v) HNO3] were spiked with 50 μg L-1 Co. For a 20-μL, sample dispensed into the atomizer, correlations between the ratio of absorbance of Ni to absorbance of Co and the analyte concentration were close to 0.9996. The relative standard deviation of the measurements varied from 0.5 to 3.4% and 1.0 to 7.0% (n=12) with and without IS, respectively. Recoveries within 98-104% for Ni spikes were obtained using IS. The characteristic mass was calculated as 43 pg Ni and the limit of detection was 1.4 μg L-1. The accuracy of the method was checked for the direct determination of Ni in soft drinks and the results obtained with IS were better than those without IS.-
Descrição: dc.descriptionDepartamento de Química Analítica Universidade Estadual Paulista, 14801-970, PO Box 355, Araraquara-SP-
Descrição: dc.descriptionDepartamento de Química Universidade Federal de São Carlos, 13560-970, PO Box 676, São Carlos-SP-
Descrição: dc.descriptionInstituto de Química Universidade de São Paulo, 05513-970, P.O. Box 26077, São Paulo-SP-
Descrição: dc.descriptionDepartamento de Química Analítica Universidade Estadual Paulista, 14801-970, PO Box 355, Araraquara-SP-
Formato: dc.format158-161-
Idioma: dc.languageen-
Relação: dc.relationAtomic Spectroscopy-
???dc.source???: dc.sourceScopus-
Título: dc.titleElectrothermal AAS determination of Ni in soft drinks using Co as the internal standard-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.