The concentrations of indicator polychlorinated biphenyls (PCBs No. 28, 52, 101, 138, 153 and 180) and organochlorine pesticides (HCB, p,p′-DDE and p,p′-DDT) in 121 blood serum specimens collected from non-occupationally exposed adults living in contaminated and comparison areas were determined using high-resolution gas chromatography/electron capture detection (HRGC/ECD). The sum of the serum concentrations of the three most abundant PCB congeners (No. 138, 153 and 180) found in participants (
N?=?81) living in industrial areas near incinerators, metallurgical and chemical plants (Krompachy, Kosice, Nemecka and Sala) was significantly higher (
p?0.001) than in participants living in villages and towns without known sources causing persistent organic pollutant (POP) contamination (
N?=?40). Similarly, significant differences were observed for p,p′-DDE (
p?0.0001) and p,p′-DDT (
p?0.002). However, a Mann-Whitney
U test between groups showed that the difference for HCB was not statistically significant (
p?=?0.089). Age was positively correlated with the sum of PCBs (No. 138, 153 and 180), HCB and the sum of p,p′-DDE and p,p′-DDT (
p?0.01 for all).
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