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 -> porcelain

Citations 2

"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

"Flow Injection Differential-kinetic Determination Of Lead With Meso-tetrakis(4-trimethylammoniumphenyl)porphyrin"
Fenxi Huaxue 1990 Volume 18, Issue 10 Pages 952-954
Mao, Q.K.;Zhang, C.;Cheng, J.K.

Abstract: Sample solution (170 µL) is mixed with 170 µL of the cited reagent (3 mM; I) each in carrier streams (1 mL min-1) of Na2B4O7 buffer solution (pH 10) in a reaction tube (15 m x 0.5 mm). The complex formed is detected at 465 nm vs. water. The working range was rectilinear up to 4 µg of Pb(II); the coefficient of variation was 0.3% for 1 µg of Pb and the sampling rate was 60 h-1. Tolerance levels of common ions are listed; there was little interference from Cd(II), Hg(II), Fe(III), Co(II), Ni(II), Zn(II), Cu(II) and Mn(II). The method was applied to the soaking extract of pottery and porcelain, and human hair.
Lead Spectrophotometry Sample preparation Kinetic Buffer pH Interferences