| Accumulation of polycyclic aromatic hydrocarbons from contaminated soil by Kandelia candel |
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| 作者姓名： | HONG Youwei YUAN Dongxing LIAO Dan LIU Baomin |
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| 作者单位： | HONG Youwei(State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China; Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China);YUAN Dongxing,LIU Baomin(State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China);LIAO Dan(College of Environment and Plant Protection, Hainan University, Danzhou 71737, China) |
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| 基金项目： | Foundation item： Fujian Natural Science Pund under contract No.D002-002.Acknowledgements The support of Professor John Hodgkiss in im- proving the quality of the English is gratefully appre- ciated and acknowledged. |
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| 摘 要： | The purpose of this study was to investigate the accumulation behavior of two typical PAHs,phenanthrene(PHE) and fluoranthene(FLA),uptaken by the mangrove Kandelia candel in various treated sandy soils.The experiment lasted for three months.Soil and plant samples were collected after 3,6,9 and 13 weeks of the incubation and the levels of PAHs were analyzed using a GC/MS(HP6890-5975B).The results showed that the root accumulations of PHE and FLA were elevated with the increase of the PAH concentrations in the soil.With prolonged exposure time,PHE and FLA concentrations of the roots increased significantly in comparison with the control.PHE and FLA concentrations of root after 13 weeks of treatment ranged from 0.28 to 4.36 μg·g-1 and 0.79 to 35.76 μg·g-1,respectively.The calculated mean values of the root concentration factors were 0.58 for PHE and 0.71 for FLA.This indicated that root accumulation of FLA was greater than PHE,which would result from the higher octanol-water partition coefficient(Kow) of FLA.These results underline the ability of mangroves to remove PAHs from contaminated marine substrates and hence their potential use in bioremediation and the removal of PAHs from the marine food chain.
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| 关 键 词： | 土壤污染 多环芳烃 秋茄 富集 |
| 收稿时间： | 2008/11/12 0:00:00 |
| 修稿时间： | 8/9/2009 12:00:00 AM |
Accumulation of polycyclic aromatic hydrocarbons from contaminated soil by Kandelia candel |
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| HONG Youwei,YUAN Dongxing,LIAO Dan,LIU Baomin.Accumulation of polycyclic aromatic hydrocarbons from contaminated soil by Kandelia candel[J].Acta Oceanologica Sinica,2009,28(6):24-29. |
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| Authors: | HONG Youwei YUAN Dongxing LIAO Dan and LIU Baomin |
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| Institution: | 1.State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China;Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China2.State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China3.College of Environment and Plant Protection, Hainan University, Danzhou 71737, China |
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| Abstract: | The purpose of this study was to investigate the accumulation behavior of two typical PAHs,phenanthrene (PHE) and fluoranthene (FLA), uptaken by the mangrove Kandelia candel in various treated sandy soils. The experiment lasted for three months. Soil and plant samples were collected after 3, 6, 9 and 13 weeks of the incubation and the levels of PAHs were analyzed using a GC/MS (HP6890-5975B). The results showed that the root accumulations of PHE and FLA were elevated with the increase of the PAH concentrations in the soil. With prolonged exposure time, PHE and FLA concentrations of the roots increased significantly in comparison with the control. PHE and FLA concentrations of root after 13 weeks of treatment ranged from 0.28 to 4.36 μg·g~(-1) and 0.79 to 35.76 μg·g~(-1), respectively. The calculated mean values of the root concentration factors were 0.58 for PHE and 0.71 for FLA. This indicated that root accumulation of FLA was greater than PHE,which would result from the higher octanol-water partition coefficient (K_(ow)) of FLA. These results underline the ability of mangroves to remove PAHs from contaminated marine substrates and hence their potential use in bioremediation and the removal of PAHs from the marine food chain. |
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| Keywords: | accumulation uptake phenanthrene fluoranthene mangrove ecosystem Kandelia candel |
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