Influence of traffic contamination on medical plants
1993
Kuzniewski, K. | Hojden, B. | Radwan-Pytlewska, K. (Akademia Medyczna, Wroclaw (Poland). Ogrod Roslin Leczniczych) | Szulkowska-Wojaczek, K. (Akademia Rolnicza, Wroclaw (Poland). Katedra Limnologii i Rybactwa)
Researches on the content of Zn, Pb, Cu and Cd in some medicinal plants have been carried out. The greatest amounts of heavy metals have been found in plants closest to the traffic road and the number of cumulated elements depended on the species and the anatomical parts thereof. The most contaminated by Cu, Zn, Pb and Cd were the plants of Digitalis purea L. The flowers of Sambucus nigra L. contained markedly more heavy metals than their fruits. The level of Cu and Cd was in the majority of plants tested within the natural background whereas the amount of Zn and Pb were considerably higher, thus eliminating the harvesting of medicinal herbs along traffic road
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