Development of a method to determine Ni and Cd in biodiesel by graphite furnace atomic absorption spectrometry

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorLobo, Fabiana Aparecida-
Autor(es): dc.creatorGoveia, Danielle-
Autor(es): dc.creatorOliveira, Adriana Paiva de-
Autor(es): dc.creatorRomão, Luciane Pimenta Cruz-
Autor(es): dc.creatorFraceto, Leonardo Fernandes-
Autor(es): dc.creatorDias Filho, Newton Luiz-
Autor(es): dc.creatorRosa, André Henrique-
Data de aceite: dc.date.accessioned2019-11-06T13:25:44Z-
Data de disponibilização: dc.date.available2019-11-06T13:25:44Z-
Data de envio: dc.date.issued2012-11-29-
Data de envio: dc.date.issued2012-11-29-
Data de envio: dc.date.issued2011-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/123456789/1893-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/555168-
Descrição: dc.descriptionThis paper proposes a low cost, simple, fast method for determining Ni and Cd in biodiesel samples by graphitefurnaceatomicabsorptionspectrometry (GFAAS). The method was evaluated in biodiesel from different sources. Tungsten was used as a permanent modifier and the samples were prepared in the form of microemulsions, by mixing about 0.5 g of biodiesel with 5 g of surfactant (Triton X-100) in volumetric flasks and completing the volume with HNO3 1% (v/v). The detection limits obtained for Ni and Cd in microemulsions were ≤0.9 and 0.1 μg L−1, respectively. The relative standard deviation (% R.S.D., n = 12) was ≤8.20% for Ni (washed animal fat sample) and ≤4.71% for Cd (sunflower oil sample). Accuracy was checked based on addition and recovery experiments, which yielded recovery rates varying from 93% to 108% for Ni and from 98% to 116% for Cd. Sample preparation is rapid and easy, and the use of an inorganic standard for calibration makes this sample preparation procedure suitable for routine applications.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Fuel concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3313100414118-
Palavras-chave: dc.subjectBiodiesel-
Palavras-chave: dc.subjectAbsorptionspectrometry-
Palavras-chave: dc.subjectMicroemulsions-
Palavras-chave: dc.subjectMetals-
Título: dc.titleDevelopment of a method to determine Ni and Cd in biodiesel by graphite furnace atomic absorption spectrometry-
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