Accumulation of heavy metals and trace elements in Medicago sativa L. grown along the E75 route section Belgrade-Leskovac
2017
Pivić, Radmila (Institute of Soil Science, Belgrade (Serbia)) | Dinić, Zoran (Institute of Soil Science, Belgrade (Serbia)) | Stanojković, Aleksandar (Institute for Animal Husbandry, Belgrade-Zemun (Serbia)) | Maksimović, Jelena (Institute of Soil Science, Belgrade (Serbia)) | Jošić, Dragana (Institute of Soil Research, Belgrade (Serbia)) | Stanojković-Sebić, Aleksandra (Institute of Soil Science, Belgrade (Serbia))
The contents of heavy metals and trace elements and their accumulation in Medicago sativa L., cultivated on Eutric cambisol along the E75 route section Belgrade-Leskovac, were examined in order to assess the health and safety of animal feed. The samples of soil and aerial parts of the plant material were collected from both sides of lanes at 10, 30, 50 and 400 m perpendicular to the direction of the highway. Soil and plant analyses of the metals content were done according to ICP methodology. The results showed that at the locality L 14, a distance of 30 and 50 meters away from the lanes, the content of total forms of Cr, Ni and Pb in soil was above the maximum permissible concentration. In the plant biomass it was determined the following: in a sample from the location L 14 at a distance of 50 meters from the lanes concentrations of Ni and Co were higher than normal values, and concentrations of Fe and Pb were above toxic levels or maximum tolerance levels for animal feed; determined Fe content in the sample of alfalfa at location L 11, 400 m away from the lanes, and Ni in the sample from the site D 12 at a distance of 50 m from the lanes, was above the normal values, while in the sample from D12 location, at a distance of 30 m from the lanes, the content of Pb was above the toxic levels or maximum tolerance levels for animal feed. The results suggest a caution in the use of alfalfa, grown near the highway route, for animal feed because of the potential entry of heavy metals into the food chain.
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