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  • Heavy metals and arsenic concentrations in ten fish species from the Šalek lakes (Slovenia) : assessment of potential human health risk due to fish
    Al Sayegh-Petkovšek, Samar ; Mazej, Zdenka ; Pokorny, Boštjan
    The study, which measured the concentrations of Hg, Pb, Cd, Zn and As in various fish tissues (muscle, gill and liver) of 10 fish species (Abramis brama danubii, Alburnus alburnus alburnus, Barbus ... meridionalis petenyi, Carassius auratius gibelio, Cyprinus carpio, Lepomis gibossus, Leuciscius cephalus cephalus, Perca fluviatilis fluviatilis, Rutilus rutilus, Scardinus erythrophtlalmus erythrophtlalmus) collected in the Šalek lakes, is the first survey regarding metal concentrations in fish species with samples originatingfrom Slovene lakes, while only a limited number of such studies have been carried out in southeastern Europe. Since these lakes are situated in the close vicinity of the largest Slovene thermal power plant, the study provides an insight into the potential impact of increased levels of metals inthe environment as well as an estimate of the contamination of fish tissues with metals. Furthermore, it was possible to compare the results obtained withthose from other studies regarding metal levels in freshwater fish species. The mean metal concentrations of different tissues irrespective of species varied in the following ranges: Zn 4.31-199 mg/kg ww, Pb 0.01-0.48 mg/kg ww, As 0.02-0.44 mg/kg ww, Hg <0.01-0.31 mg/kg ww, Cd <0.01-0.19 mg/kg ww. In general, higher contents of Hg were found in muscles and livers than in gills and higher contents of As in gills and livers than in muscles, respectively. The accumulation of Pb and Zn was most pronounced in gills. The result obtained regarding metal concentrations in fish rvealed that the ecosystems of the Šalek lakes are not polluted with Hg and Pb, slightly loaded with As and Cd and moderatly polluted with Zn. In addition, the potential human health risk due to fish consumption was assessd. This showed that estimated weekly intakes for all metals were below provisional permissible tolerable weekly intakes determined by WHO/FAO. The consumption of fish from the Šalek lakes, therefore, does not pose a risk to human health.
    Vir: Environmental monitoring and assessment. - ISSN 0167-6369 (Vol. 184, no. 5, 2012, str. 2647-2662)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2012
    Jezik - angleški
    COBISS.SI-ID - 1117142

    Povezava(-e):

    http://dx.doi.org/10.1007/s10661-011-2141-4
    DOI

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