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Orientador(es)
Resumo(s)
Interfacing automatic flow systems to atomic emission/absorption spectrometry based on flame
atomisation techniques may present some difficulties, especially when there are flow interruptions
inherent to the technique of automation applied. Therefore, in the present work, different
configurations for interfacing multisyringe flow injection analysis (MSFIA) systems to flame-based
detectors (flame emission spectrometer in this case) are proposed and compared. To illustrate the
feasibility of the selected approach, an intelligent flow system was implemented for in-line dilution of
samples prior to determination of potassium content. By selecting the injection volume and the number
of dilution channels activated, a dynamic concentration range (1–2000 mg L 1) was established,
allowing direct introduction of soil extracts (1–20 mg L 1), parenteral solutions (20–600 mg L 1) and
table wines (200–2000 mg L 1). The sampling frequency (three replicates per sample) was about 14 h 1.
Descrição
Palavras-chave
Contexto Educativo
Citação
"Journal of Analytical Atomic Spectrometry". ISSN 0267-9477. 24 (2009) 340–346
Editora
Royal Society of Chemistry