engleski

Selenium and trace metal content in selected vegetables from Raša and Opatija towns, and their estimated daily intakes

The lack of legislative measures and advanced technologies results in adverse effects of mining, coal combustion and inappropriate waste disposal on the environment. An example is high-sulphur seleniferous Raša coal. Total of 12 soil samples and 22 vegetable samples from the area of Raša, Krapan and Opatija, the latter used as an area representing natural environmental conditions, were examined. Total element concentrations in the samples were determined by HR-ICP mass spectrometry after digestion in a specialized microwave oven. All samples were analysed for total concentrations of 32 elements (Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cs, Cu, Fe, Li, Mg, Mn, Mo, Na, Ni, P, Pb, Rb, S, Sb, Sc, Se, Sn, Sr, Ti, Tl, U, V, and Zn). The obtained results showed that the soil of Krapan and Raša is contaminated with Cd, Mo, Pb and Se. Based on the measured element levels in vegetable samples, the hazard quotient for the elements: As, Cd, Cr, Cu, Fe, Mn, Mo, Ni, Se, Sn, and Sr, and the estimated daily intake for the following elements: As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Se, and Zn in vegetable samples from the area of Raša, Krapan and Opatija were calculated. The hazard quotient did not exceed 1 for any element included in the calculation, while the estimated daily intake higher than the maximum allowed was calculated for all elements, except Zn, at all locations. The results show that in the area of Raša and Krapan the soil and vegetables are contaminated with metals, but the same is true for Opatija.

high-sulphur selenifeorus coal ; vegetables ; hazard quotient ; estimated daily intake ; Raša ; Krapan ; Opatija

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