[The influence of smoking and passive smoking to occurrence of metals in breast milk].

Concentrations of 7 metals (Cd, Cr, Cu, Fe, Mn, Pb and Zn) have been assayed in the breast milk of three groups of women, inhabitant in Cieszyn region. The first group (n=34) comprised the women non-smoking, the second (n=29) passive smoking women, and third (n=18)--women smoking and exposed to cigarette smoke. The concentrations of all the trace metals were found to be higher in the breast milk of women smoking and passive smoking. The results obtained were analyzed using the principal component analysis (PCA).