Statistical estimation of the influence of mineralization methods on the results of heavy metals determination in cereals by the DPASV method
Stryjewska, E. (Warsaw Univ. (Poland). Dept. of Chemistry) | Rubek, S. | Henrion, A. | Henrion, G.
The elements Cd, Cu, Pb and Zn have been determined in wheat, barley and oats by differential pulse anodic stripping voltammetry after wet mineralization, mineralization by dry ashing or mineralization in a PTFE bomb. The procedures are described. The results were evaluated by BASIC programs for one dimensional data evaluation, by principal components plot and by multidimensional analysis of variance. The influences of mineralization procedures on the results are low compared with the different contents in the three cereals particularly for Cd, but also for Pb and Zn. There are no significant differences, in the Cu contentShow more [+] Less [-]