Interfacing multisyringe flow injection analysis to flame atomic emission spectrometry: an intelligent system for automatic sample dilution and determination of potassium

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Ines I G S Almeida (Author) Other; Marcela A Segundo (Author) FFUP; Jose L F C Lima (Author) FFUP; Antonio O S S Rangel (Author) Other

Journal

Title: Journal of Analytical Atomic Spectrometry

Vol. 24 No. 3

Pages: 340-346

ISSN: 0267-9477

Publisher: Royal Society of Chemistry

Indexing

ISI Web of Knowledge - 9 Citations

ISI Web of Science

Scopus - 12 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

CORDIS: Health sciences

Other information

Authenticus ID: P-003-QST

DOI: 10.1039/b813150c

Resumo (PT): 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. <br> <br> <a target="_blank" href="http://www.rsc.org/Publishing/Journals/JA/article.asp?doi=b813150c"> Texto integral </a> <br> <br>

Abstract (EN): 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).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7