Issue 11, 2006
From the journal:

Journal of Analytical Atomic Spectrometry

Tube atomizers in thermospray flame furnace atomic absorption spectrometry: characterization using X-ray fluorescence, scanning electron microscopy and chemometrics

G. A. Petrucelli,a   P. K. Stocco,a   M. I. M. S. Buenob  and  E. R. Pereira-Filho†*a  

* Corresponding authors

a Pontifícia Universidade Católica de Campinas—PUC-Campinas, Faculdade de Química—Centro de Ciências Exatas, Ambientais e de Tecnologias—CEATEC, Rodovia Dom Pedro I, km 136, P.O. Box 317, Campinas-SP, Brazil

b Universidade Estadual de Campinas—UNICAMP, Instituto de Química, P.O. Box 6154, Campinas-SP, Brazil

Abstract

This work describes some complementary strategies for characterization and performance evaluation of tube atomizers used in thermospray flame furnace atomic absorption spectrometry. Metal tubes composed of Cr, Fe, Mo, Ni, Ti and W and ceramic tubes were characterized before and after being used for determinations of Cd, Cu, Mn, Pb and Zn in aqueous solutions, food and environmental samples. The best performances were observed for Ni-99% and Ti-99% atomizers. Ti and Ni atomizer lifetimes were around 5 and at least 88 hours, respectively. Titanium oxide (TiO2) formation on the external surfaces of Ti tubes is a clear indication of its short lifetime. This observation was confirmed by X-ray fluorescence analyses and histograms of images obtained by scanning electron microscopy. Nickel tube atomizers presented small morphological distinctions when comparing new and used tubes, without affecting their analytical performances.

Graphical abstract: Tube atomizers in thermospray flame furnace atomic absorption spectrometry: characterization using X-ray fluorescence, scanning electron microscopy and chemometrics

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Article information

DOI
https://doi.org/10.1039/B607255K
Article type
Paper
Submitted
22 May 2006
Accepted
31 Jul 2006
First published
29 Aug 2006

J. Anal. At. Spectrom., 2006,21, 1298-1304

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Tube atomizers in thermospray flame furnace atomic absorption spectrometry: characterization using X-ray fluorescence, scanning electron microscopy and chemometrics

G. A. Petrucelli, P. K. Stocco, M. I. M. S. Bueno and E. R. Pereira-Filho, J. Anal. At. Spectrom., 2006, 21, 1298 DOI: 10.1039/B607255K

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