University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Ceramic -> stoneware

Citations 1

"Flow Injection Flame-atomic-spectrometric Determination Of Iron, Calcium, Magnesium, Sodium And Potassium In Ceramic Materials By Using A Variable-volume Injector"
Fresenius J. Anal. Chem. 1993 Volume 345, Issue 8-9 Pages 579-584
M. de la Guardia Contact Information, A. Morales-Rubio, V. Carbonell, A. Salvador, J. L. Burguera and M. Burguera

Abstract: A sample (0.1 g) of ceramic material (porcelain, feldspar, kaolin, varnish, clay or stoneware) was digested with LiBO2 (1 g) in a muffle furnace at 1000°C before dissolution in HNO3 and dilution with water. A variable-volume injector described previously (cf., Burguera et al., Anal. Chim. Acta, 1990, 234, 253) was used to simplify the online dilution and analysis of the samples (cf., Carbonell et al., J. Anal. Atomic Spectrom., 1991, 6, 233) by AAS and AES. The limits of detection were 100, 70, 50, 50 and 8 µg L-1 for Na, Ca, Fe, K and Mg, respectively. The calibrations were rectilinear with coefficient of variation between 0.5 and 2%. The results on 17 samples were comparable to those obtained by batch analysis.
Iron Calcium Magnesium Sodium Potassium Sample preparation Spectrophotometry Spectrophotometry Injector Valve Method comparison