Flame AAS determination of copper in urine using a flow injection on-line preconcentration system based on a polyamine chelating ion exchange column

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

Almeida, AA (Autor) FFUP; Jun, X (Autor) Outra; Lima, JLFC (Autor) FFUP

Revista

Título: Atomic Spectroscopy

Vol. 21

Páginas: 187-193

ISSN: 0195-5373

Editora: Perkin-Elmer Corp.

Indexação

ISI Web of Knowledge - 13 Citações

Scopus - 11 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-000-Z0T

Abstract (EN): A flow injection system incorporating a polyamine chelating ion exchange column for the flame atomic absorption determination of copper in urine is proposed. At a 5-mL sample volume, the procedure yielded a detection limit of I mug/L and a sample frequency of 20/h. Repeatability (%RSD, n=10) was 0.9% at a 100-mug/L level and 1.4% at a 20-mug/L level. Reproducibility (%RSD; n=3) was 5% for a mean sample concentration of about 33.8 mug/L. For maximum accuracy, a rapid wet sample digestion with H2O2 had to be performed. Results obtained by the proposed methodology (n=20) were in good agreement with those provided by graphite furnace atomic absorption spectrometry.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7