L. Ebdon, J. R. Wilkinson
1987
Citations
0
Influential Citations
20
Citations
Journal
Analytica Chimica Acta
Abstract
Abstract Concentrated perchloric acid is used to digest coal for subsequent determination of arsenic and selenium by hydride-generation atomic absorption and fluorescence spectrometry. Arsenic and selenium are removed from potentially interfering metal ions by coprecipitation with lanthanum hydroxide. The detection limits, 58 and 36 ng g −1 by atomic absorption and 25 and 10 ng g −1 by atomic fluorescence, for arsenic and selenium in coal, respectively, are adequate for the normal levels of these metals.