Cadmium and other metal uptake by Lobelia chinensis and Solanum nigrum from contaminated soils.
Cadmium concentrations in two plant species and their corresponding soils were evaluated in a metal contaminated area. The average Cd concentrations reached 36.9 and 141 mg kg(-1) in Solanum nigrum leaves and Lobelia chinensis shoots, respectively. There is a significant relationship between the Cd concentration in the aerial tissues and the corresponding soils on a logarithmic scale. Under the hydroponic culture conditions, the maximum Cd concentration in the S. nigrum leaves and L. chinensis shoots were 1,110 and 414 mg kg(-1), respectively. Cd concentration was higher in the roots than in the aerial parts. The two plants may be used in suitable phytoremediation process.
Peng
K J
KJ
Hunan Research Academy of Environmental Sciences, Changsha, 410004, China.
Luo
C L
CL
Chen
Y H
YH
Wang
G P
GP
Li
X D
XD
Shen
Z G
ZG
D001673:Biodegradation, Environmental; D002104:Cadmium / Q000032:analysis / Q000378:metabolism*; D029746:Lobelia / Q000378:metabolism*; D019216:Metals, Heavy / Q000032:analysis / Q000378:metabolism; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*; D032324:Solanum nigrum / Q000378:metabolism*
D019216:Metals, Heavy; D012989:Soil Pollutants; D002104:Cadmium