Accumulation and Distribution of Heavy Metals in Artemisia lavandulaefolia at Lead-zinc Mining Area

The enrichment and distribution of Pb,Zn,Cu and Cd in Artemisia lavandulaefolia of different abandoned lead-zinc mine areas were studied. The results showed that the concentrations of heavy metals in soils decreased with abandoned time increasing. Artemisia lavandulaefolia had a better absorption capacity for zinc and lead. Correlation was significant at 0.01 level between concentrations of Cu,Zn and Pb in plants and soils. The percentage composition of heavy metals in plant increased with their amounts in soils. The metals accumulation by Artemisia lavandulaefolia differed with its parts and kinds of metals in different abandoned lead-zinc mine areas. The concentrations of heavy metals in shoot was higher than root of this species except lead of the first environment. Besides, the bio-concentration factor of copper was greater than other metals. The TF values of copper and cadmium was higher than lead. The Pb of weak retention rate was 36.59% in root of Artemisia lavandulaefolia, but it was not retention rate for Cu, Cd, Zn, respectively. Showing by comprehensive analysis that, Artemisia lavandulaefolia could concentrate different heavy metals and had the characteristics of a greater biomass, which had a better potential and practical use in phytoremediation.