Assessment of Two New Ligands for Increasing the Uptake of Cd, Cr, and Ni in Helianthus annuus Grown in a Sandy-Loam Soil

Turgut, Cafer; Babahan, Ilknur; Atatanir, Levent; Cutright, Teresa J.

Assessment of Two New Ligands for Increasing the Uptake of Cd, Cr, and Ni in Helianthus annuus Grown in a Sandy-Loam Soil

2010

Turgut, Cafer | Babahan, Ilknur | Atatanir, Levent | Cutright, Teresa J.

The use of two new ligands, (1Z)-1-(4-aminophenyl) ethan-1-one semicarbazone (L¹) and (1Z)-1-(4-nitrophenyl)ethan-1-one semicarbazone (L²), was evaluated for their potential use as chelators in increasing phytoremediation effectiveness. The uptake of heavy metals by Teddy Bear sunflowers increased when L¹ added at 0.1 and 0.3 g/kg. Metal uptake selectivity was Cr > Ni ≫ Cd for each treatment. The 0.1-g/kg L¹ ligands produced a significant uptake of metals in Sundance sunflowers. The 0.3-g/kg L¹ level increased the metal uptake, but it was lower than 0.1-g/kg L¹ treatment. The uptake selectivity with L² ligand was Cr > Ni > Cd, with the majority of metals retained in the roots. L¹ ligand was better compared in comparison to L² ligand for enhancing uptake of metals.

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