Abstract
In this research we investigated the ability of cress seeds (Lepidium sativum L.) to grow in an aqueous media with metal toxicities. The toxicity of Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn ions were examined in blank, nitrate ( N– NO3 ) –, phosphate ( KH2 PO4 ) –, and saline (NaCl)–contaminated media. The acute toxicity of the tested metal ions in the blank media according to their IC50 (50% inhibitory concentration) values increased on the order of Pb<Fe<Co<Zn<Mn<Cr<Cu<Cd<Ni . The effect of the different contaminations on the root growth of the cress seeds (Lepidium sativum L.) along with their separate and combined effects was investigated. Also, the changes in toxicity order were evaluated.
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