Effects of EDTA on lead accumulation in Tagetes patula and Salvia spendens
Li, Y-Shuang.; Sun, L-Na.; Sun, T-Heng.
Ying Yong Sheng Tai Xue Bao 18(9): 2149-2152
2007
ISSN/ISBN: 1001-9332 PMID: 18062328 Document Number: 615035
Pot experiments were conducted to investigate the effects of EDTA on the Pb availability in rhizospheric soil and the Pb accumulation in Tagetes patula and Salvia spendens. The results showed that 7 days after applying EDTA (3.0 mmol center dot kg(-1)) into soil, the concentration of ammonium acetate (1 mol center dot L-1)-extracted Pb in rhizospheric soil increased significantly (P < 0. 01), and the Pb content in T. patula and S. spendens leaves reached to 2 415.88 and 1 083.68 mg center dot kg(-1), being 61.36 and 5.37 times of the control, respectively. The Pb content also had a marked increase in T. patula and S. spendens stems, but had a slight decrease in their roots.