ASSESSMENT OF HEAVY METALS LEVEL IN SOME PERENNIAL MEDICINAL PLANTS BY FLAME ATOMIC ABSORPTION SPECTROMETRY

作者：Radulescu Cristiana^*; Stihi Claudia; Popescu Ion V; Ionita Ionica; Dulama Ioana Daniela; Chilian Andrei; Bancuta Oana Roxana; Chelarescu Elena Daniela; Let Dorin

来源：Romanian Reports in Physics, 2013, 65(1): 246-260.

• medicinal plant
• heavy metal
• FAAS
• accumulation

Heavy metals in four perennial medicinal plants such as Matricaria recutita, Taraxacum officinale, Achillea millefolium, and Hypericum perforatum, collected from Navodari region, have been quantitatively analyzed by using Flame Atomic Absorption Spectrometry (FAAS). Seven heavy metals (Cd, Cr, Co, Cu, Pb, Ni, and Zn) in plant samples and nine heavy metals (Cd, Cr, Co, Cu, Pb, Fe, Mn, Sn, and Zn) in soil were selected on the basis of their effects upon health. Absorption of heavy metal in medicinal plant is governed by soil characteristics such as pH, salinity, conductivity and organic matter content. In this respect zinc concentration ranged between 12.180 mg/kg in Taraxacum officinale collected from Ovidiu zone and 48.976 mg/kg in Achillea millefolium collected from Rompetrol Refinery location. The physiological activities of the medicinal plant influence Zn absorption and the interactions with many elements such as Fe and Cu. Taraxacum officinale was able to accumulate more Cd (e.g. 0.783 mg/kg d.w. in Channel of Rompetrol Refinery location) than Achillea millefolium, Matricaria recutita and Hypericum perforatum. These plants can absorb Pb from soil and from PbEt2 traffic-induced contaminated atmosphere, because the collected points are near roads. The analysis of Cr in medicinal plants indicated that Cr concentration ranged between 0.127 mg/kg to 0.970 mg/kg on Channel of Rompetrol Refinery and 0.059 mg/kg to 0.704 mg/kg on Rompetrol Refinery, respectively.

• 出版日期2013