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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/4867

Title: Emprego de padrão único para a construção de curvas analíticas em sistema de análise por injeção em fluxo associado à espectrofotometria em fase sólida
Other Titles: Química Nova
Authors: Oliveira, Fábio Santos de
Korn, Mauro
Keywords: Flow injection analysis;Solid phase spectrophotometry;Analytical curves
Issue Date: 2003
Abstract: In this work two procedures were proposed for analytical curves construction using a single standard solution employing a flow injection system with solid phase spectrophotometric detection (FI-SPS). A flow cell contends the chromogenic reagent 1-(2-tiazolylazo)-2-naphtol was positioned on the optical path. The first procedure was based on controlled concentration of analyte on solid phase and the relations between absorbance and the total volume of injected allowed the calculation of analyte concentration. The second procedure was developed employing controlled dispersion/retention in flow system where analyte concentration was obtained by exploiting the relation between transient signals of samples and single standard solution at equivalent reading time. The procedures were successfully applied for zinc determination in synthetic solutions with good precision and accuracy at 95% confidence level.
Description: p. 470-474,Jul/Aug.
URI: http://www.repositorio.ufba.br/ri/handle/ri/4867
ISSN: 0100-4042
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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