Journal of Analytical Methods in Chemistry

Journal of Analytical Methods in Chemistry / 1991 / Article

Open Access

Volume 13 |Article ID 146235 | https://doi.org/10.1155/S1463924691000275

Celio Pasquini, Lourival C. de Faria, "Operator-free flow injection analyser", Journal of Analytical Methods in Chemistry, vol. 13, Article ID 146235, 4 pages, 1991. https://doi.org/10.1155/S1463924691000275

Operator-free flow injection analyser

Abstract

A flow injection analyser has been constructed to allow an operator-free determination of up to 40 samples. Besides the usual FIA apparatus, the analyser includes a home-made sample introduction device made with three electromechanical three-way valves and an auto-sampler from Technicon which has been adapted to be commanded by an external digital signal. The analyser is controlled by a single board SDK-8085 microcomputer. The necessary interface to couple the analyser components to the microcomputer is also described. The analyser was evaluated for a Cr(VI)-FIA determination showing a very good performance with a relative standard deviation for 15 signals from the injection of 100 μl of a 1.0 mg.ml-1 standard Cr(VI) solution being equal to 0.5%.

Copyright © 1991 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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