Volume 26, Number 7, September 1998Preparative Chromatography
|Page(s)||256 - 260|
Chemical characterization of municipal solid waste incineration residue: Dissolution of elements with a microwave-dilute acids digestion technique compared to conventional methodsS. Dugenest, M. Ollé, A. Ribes and M.F. Grenier-Loustalot
Service Central d'Analyse, Centre National de la Recherche Scientifique, USR 059, BP. 22, 69390 Vernaison, France
The aim of this work was to evaluate the focused microwave technique in an open system for the rapid dissolution of elements in fly ash and filter cakes, in comparison to conventional wet and dry methods. The method involved 15 minutes of heating in microwave system in 2 N nitric or hydrochloric acid. It was tested on different types of samples and led to the dissolution of Ca, Na, K, Zn, Pb, As with 2 N HNO3 or HCl and Cd, Hg with 2 N HNO3 for subsequent determination by atomic emission or absorption spectrometry. Thereby this method represents a rapid sample preparation technique for chemical analyses.
Key words: Fly ash / filter cake / microwave acid digestion / ICP-AES / HG-QFAAS.
© EDP Sciences, Wiley-VCH 1998