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《Environmental Science and Technology》 2002-02
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Phyto-availability of Environmental Hormone Pb in Soil and Its Effectiveness in Soil Remediation

KUANG Shao ping, XU Zhong, ZHANG Shu sheng (Department of Applied Chemistry, Qingtao University of Science and Technology, Qingdao 266042)  
Lead (Pb) acts as one of the estrogens and poses serious risk to human and animal bodies, resulting in procreant anomalies, such as maladjustment of incretion, weakening of procreation function and descending of genital immunity. This paper reports on the potted plant experiments of paddies. The results show that this kind of crop did not indicate any macro toxic symptoms within the range of Pb concentrations of 0 4,000 mg/kg in soils. Meanwhile, it is found that lead in soils is easily absorbed by the crop and remains in the different parts of the plant and statistically, Pb contents of the crop are positively correlated to the counterpart soils. The results also show Pb contents in roots are the highest of all, being tens to thousands times higher than in straw and seeds, implying the barrier action of roots of paddies for Pb absorption of straw and seeds. It is accordingly suggested that heavy metals such as Pb in soil can be decreased gradually by planting paddies through removing the roots.
【Fund】: 青岛科技大学高科技启动基金资助
【CateGory Index】: X53
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