Issue 3, 2009
From the journal:

Journal of Analytical Atomic Spectrometry

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

M. Inês G. S. Almeida,a   Marcela A. Segundo,b   José L. F. C. Limab  and  António O. S. S. Rangel*a  

* Corresponding authors

a Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Dr. António Bernardino de Almeida, Porto, Portugal
E-mail: aorangel@esb.ucp.pt
Fax: +351 225090351
Tel: +351 225580064

b REQUIMTE, Serviço de Química-Física, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha, 164, Porto, Portugal

Abstract

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.

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

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Article information

DOI
https://doi.org/10.1039/B813150C
Article type
Technical Note
Submitted
30 Jul 2008
Accepted
26 Nov 2008
First published
19 Dec 2008

J. Anal. At. Spectrom., 2009,24, 340-346

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

M. I. G. S. Almeida, M. A. Segundo, J. L. F. C. Lima and A. O. S. S. Rangel, J. Anal. At. Spectrom., 2009, 24, 340 DOI: 10.1039/B813150C

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