Study of the affect of cadmium and lead concentrations in soil to the growth and accumulation of these metals in (Eleusine indica L.

Abstract

This study evaluated cadmium (Cd) and lead (Pb) accumulation by Eleusine indica L. plants grown in soil with different Cd and Pb concentrations in 3 months to assess the affect of the metal concentrations in soil to the plant’s remediating ability to grow in Cd- and Pbcontaminated soil for phytoremediation purpose. At the Cd concentration in soil of 50-200 mg/kg, the cumulative Cd content in leaves of Eleusine indica L. was from 75.61±3.12 mg/kg to 195.21±4.20 mg/kg; that in root was from 365.09±10.11 mg/kg to 482.08±20.51 mg/kg; and its ability to remove Cd reached a peak of 2.883-2.973 mg/plant. At the Pb concentration in soil of 1,500-3,000 mg/kg, the ability of Pb accumulation in the leaves was from 149.25±7.23 mg/kg to 189.60±8.19 mg/kg, and the Pb accumulation capacity in roots was from 1,332.65 ±13.16 mg/kg to 2,754.6±15.34 mg/kg. The capability of removing Pb from the soil was high, reached 14.01-14.36 mg/plant.