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- W35115749 abstract "Phytoremediation of soil contaminated with phenanthrene and pyrene was investigated using twelve plant species. Plant uptake and accumulation of these chemicals were evaluated. At the end of the experiment(45 d), the remaining respective concentrations of soil phenanthrene and pyrene in spiked vegetated soils, with initial phenanthrene of 133.3 mg/kg and pyrene of 171.5 mg/kg, were 8.71-16.4and 44.9-65.0 mg/kg, generally 4.7%-49.4% and 7.1%-35.9% lower than their concentrations in the nonvegetated soils. The loss of phenanthrene and pyrene in vegetated spiked soils were 88.2%-93.0% and 62.3%-73.8% of the added amounts of these contaminants, respectively. Although plant uptake and accumulation of these compounds were evident, and root concentrations and RCFs(root concentration factors; defined as the ratio of PAH concentrations in roots and in the soils on a dry weight basis) of these compounds significantly positively correlated to root lipid contents, plant uptake and accumulation only accounted for less than 0.01% and 0.23% of the enhanced loss of these chemicals in vegetated versus non-vegetated soils. In contrast, plant-promoted microbial biodegradation was the dominant mechanism of the phytoremediation for soil phenanthrene and pyrene contamination. Results from this study suggested a feasibility of the establishment of phytoremediation for soil PAH contamination." @default.
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- W35115749 date "2005-01-01" @default.
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- W35115749 title "Phytoremediation for phenanthrene and pyrene contaminated soils" @default.
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