Oxidability determination in waste waters using an automatic titrator based on a multicommutated unsegmented flow system

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

Autores

Almeida, CMNV (Autor) Outra; Lapa, RAS (Autor) FFUP; Lima, JLFC (Autor) FFUP

Revista

Título: International Journal of Environmental Analytical Chemistry

Vol. 78

Páginas: 315-332

ISSN: 0306-7319

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 5 Citações

Scopus - 4 Citações

Outras Informações

ID Authenticus: P-001-1PE

DOI: 10.1080/03067310008041350

Abstract (EN): The automatic titrator based on a multicommutated unsegmented flow system was applied to redox titrations and used for oxidability determination in waters analysis. This automatic titrator allows the attainment of complete titration curves, being the determination of titrand concentration performed without requiring any prior calibration. After sample treatment (oxidation step), the oxidability determination in waste water samples was accomplished by the automatic flow titrator (titration step). Repeated determinations of standard solutions gave a 3.5% RSD (n=10, 0.010M) for repeatability and a 3.2% RSD (n=2, 0.057M) for reproducibility. Samples results (n=9) were in good agreement (t-test) with those obtained with a reference procedure.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 18