[Heavy metals accumulation in different parts of Paeonia ostii and soils at copper tailings yard].
The study on the heavy metals contamination of Paeonia ostii and soil at the copper tailings yard in Tongling City indicated that the soil of copper tailings yard was extremely barren, only with 1.1-3.4 g x kg(-1) organic mater (1/15 of normal soil), but the contents of its Cu, Cd, Pb and Zn were much higher. Cu and Cd contents were 587.43-1176.44 mg x kg(-1) and 3.08-5.16 mg x kg(-1), respectively, 5-10 times higher than the grade two of national environmental quality standard for soils. Cu, Cd and Pb contents in Paeonia ostii exceeded the standard of medicine-use plants. Especially in its root peel, Cu and Cd contents stood at 31.50-64.00 mg x kg(-1) and 0.98-1.45 mg x kg(-1), respectively, 1.6-3.6 times surpassing the standard, which meant that both Paeonia ostii and the soil had been severely polluted. There existed evident difference in the contents of heavy metals in different parts of Paeonia ostii. Stem, leaf and root peel had higher contents of Zn, Cd, Pb and Cu. The accumulation factors of Zn and Cd were higher than those of Cu and Pb, but they were all smaller in root peel.
Wang
Youbao
Y
College of Life Sciences, Anhui Normal University, Wuhu, China. wybzl@tom.com
Zhang
Liqin
L
Liu
Dengyi
D
D003300:Copper; D004340:Drug Contamination; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D019216:Metals, Heavy / Q000032:analysis*; D008906:Mining; D029596:Paeonia / Q000737:chemistry / Q000254:growth & development*; D018517:Plant Roots / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*
D004365:Drugs, Chinese Herbal; D019216:Metals, Heavy; D012989:Soil Pollutants; D003300:Copper