Optimization of heating programs of gfaas for the determination of cd, cuni and pb in sediments using sequential extraction technique
Journal
International Journal of Environmental Analytical Chemistry
Journal Volume
50
Journal Issue
3
Pages
193-205
Date Issued
1993
Author(s)
Abstract
The volatilization behaviors of Cd, Cu, Ni and Pb in different extracting media have been studied using graphite furnace atomic absorption spectrometry (GFAAS) to determine metal concentrations in natural sediments. Considerable interference was found for Cd, Ni, and Pb in the extracts of high matrix concentrations, and could be largely reduced by carefully selecting the ashing and atomization temperatures of GFAAS. Optimal heating programs are proposed to suit a variety of extracts containing different matrices. © 1993 Gordon and Breach Science Publishers S. A.
Type
journal article