Simultaneous determination of chromium and nickel in medicinal plants by slurry sampling graphite furnace atomic absorption spectrometry

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorInstitute of Science and Technology-
Autor(es): dc.creatorFortunato, Felipe Manfroi-
Autor(es): dc.creatorMiranda, Kelber-
Autor(es): dc.creatorGomes Neto, José Anchieta-
Autor(es): dc.creatorFreschi, Gian Paulo Giovanni-
Data de aceite: dc.date.accessioned2025-08-21T22:44:34Z-
Data de disponibilização: dc.date.available2025-08-21T22:44:34Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2012-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227453-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227453-
Descrição: dc.descriptionSlurry sampling graphite furnace atomic absorption spectrometry was employed for the simultaneous determination of Cr and Ni in medicinal plants. A chemical modifi er was not required and the optimum pyrolysis and atomization temperatures were 1600 °C and 2300 °C, respectively. Calibration using aqueous standards allowed accurate and precise results. Characteristic masses for Cr and Ni were 5.8 and 31 pg, respectively. The limits of detection obtained were 0.04 μg g-1 for Cr and 0.3 μg g-1 for Ni using 0.5% (m/v) slurries (100 mg/20 mL). Relative standard deviations of 3 measurements for Cr and Ni in medicinal plant slurries were below 10%. Accuracy was evaluated after analyzing the standard reference materials Tomato Leaves (1573a), Apple Leaves (1515), Pine Needles (1575a) and Peach Leaves (1547). The results obtained were in agreement with certifi ed values at a 95% confi dence level (unpaired t-test). The proposed method was applied to slurries of ten medicinal plant samples and the concentrations varied from 1.76 to 11.6 μg g-1 for Cr and from 1.2 to 5.5 μg g-1 for Ni. The lifetime of the graphite atomizer was around 600 fi rings.-
Descrição: dc.descriptionSão Paulo State University - Unesp Analytical Chemistry Department, P.O. Box 355, 14801-970 Araraquara - SP-
Descrição: dc.descriptionAlfenas Federal University - UNIFAL-MG Institute of Science and Technology, 37715-400 Poços de Caldas - MG-
Descrição: dc.descriptionSão Paulo State University - Unesp Analytical Chemistry Department, P.O. Box 355, 14801-970 Araraquara - SP-
Formato: dc.format436-440-
Idioma: dc.languageen-
Relação: dc.relationBrazilian Journal of Analytical Chemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectChromium-
Palavras-chave: dc.subjectGraphite furnace atomic absorption spectrometry-
Palavras-chave: dc.subjectMedicinal plants-
Palavras-chave: dc.subjectNickel-
Palavras-chave: dc.subjectSlurry sampling-
Título: dc.titleSimultaneous determination of chromium and nickel in medicinal plants by slurry sampling graphite furnace atomic absorption spectrometry-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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