Cd and Pb contents were determined in 699 samples of fruiting bodies of 55 mushrooms species, collected in the period 2000-2007 in the vicinity of the largest Slovenian thermal power plant (the Šalek Valley) and near an abandoned lead smelter (the Upper Meža Valley). The present study is the first regarding lead and cadmium in mushrooms from those exposed areas. Therefore, there was a significant lack of prior data. Among 55 studied mushroom species 36 species are edible and important from an ecotoxicological perspective. However, the remainig non-edible species are important for bioindication and allowed us to compare our results with other studies carried out in other polluted areas in Europe. The highest contents of Cd were found in Agaricus arvensis Schff.: Fr. (117 mg/kg dw) and Agaricus silvicola L.: Fr. (67.9 mg/kg dw), while the highest contents of Pb were found in Macrolepiota procera (Scop.) Singer (53.8 mg/kg dw) and Lycoperdon perlatum Pers. (50 mg/kg dw), respectively. Considering the high contents of both metals in fruiting bodies of edible fungi, together with FAO/WHO directives on tolerable levels of weekly intake of Pb/Cd by humans, it is evident that consumption of some mushroom species originating from both study areas may pose a significant human health risk. Agaricus arvensis Schff.: Fr., Agaricus silvicola L.: Fr. and Cortinarius caperatus (Pers.) Fr. originating from the Šalek Valley, and Armillaria mellea Vahl. P. Kumm., Boletus edulis Bull., Lycoperdon perlatum Pers., Leccinum versipelle (Fr. & Hök) Snell, and Macrolepiota procera (Scop.) Singer originating from the Upper Meža Valley should not be consumed at all. Our findings are consistent with some other studies, which emphasized that mushrooms from heavily polluted areas, such as in the vicinity of smelters, accumulate extremely high amounts of metals, and should therefore be omitted from human consumption.
COBISS.SI-ID: 1142486
The metal levels were determined in soil samples in earthworms collected in the vicinity of the abandoned lead smelter (the Upper Meža Valley, Žerjav) andthe largest thermal power plant in Slovenia (the Šalek Valley, Veliki Vrh),near Velenje - Celje road (Črnova) and at the reference area (the Logar Valley, Polanc) with the aim to investigate the transfer of metals from soil to earthworms and to assess the bioindicative potential of earthworms. Our study revealed the following: (i) the highest levels of metals were determinedin earthworms from the most polluted area (Žerjav) and the lowest inearthworms from the reference location (the Logar Valley); (ii) earthworms bioaccumulated Cd, Hg and Zn at all locations, bioaccumulative factors (BCF) of these three metals ranged between 1.18 - 29.2 (Cd), 1.68 - 21.0 (Hg) and 1.10 - 5.57 (Zn), respectively; (iii) earthworms are good bioindicator of polluted soil, since the correlations between Zn, Cd, Cu, Pb, Hg and Mo in soil and in earthworms were established.
COBISS.SI-ID: 3746726
The transport of metals from soil to the liver of small mammals inhabiting differently polluted areas in Slovenia was investigated. Pb, Cd, Zn, Hg, Cu, and Mo were determined in 139 individuals of five small mammals species, collected in 2012 in the vicinity of a former lead smelter (Žerjav), the largest Slovenian thermal power plant (Veliki Vrh), along a main road (Črnova) and in a control area (Polanc). The soil in the vicinity of the former smelter is heavily polluted with metals, especially with Pb and Cd. The mean metal concentrations in liver, irrespective of species, varied in the following ranges: Pb: 0.40-7.40 mg/kg fw, Cd: 0.27-135 mg/kg fw and reached effect concentrations in a significant proportion of the livers of the small mammal specimens (Pb: 40%, Cd: 67%). These findings indicate that the majority of small mammals trapped in the area of the former lead smelter are at risk of toxicological effects due to the very high uptake of Pb and Cd in the organism. On the contrary, Pd and Cd concentrations in livers of small mammals from the other study areas were comparable with reference values and considerably lower than effect concentrations. Additionally, it was confirmed that Apodemus flavicollis and Myodes glareolus are very suitable biomonitors of metal pollution. The differences between study areas were statistically significant for Pb and Cd regarding both small mammal species and for Zn regarding Myodes glareolus.
COBISS.SI-ID: 1160406