| HONG Youwei,YUAN Dongxing,LIAO Dan,LIU Baomin.Accumulation of polycyclic aromatic hydrocarbons from contaminated soil by Kandelia candel[J].Acta Oceanologica Sinica,2009,(6):24-29 |
| Accumulation of polycyclic aromatic hydrocarbons from contaminated soil by Kandelia candel |
| Accumulation of polycyclic aromatic hydrocarbons from contaminated soil by Kandelia candel |
| 投稿时间：2008-11-12 修订日期：2009-08-09 |
| DOI： |
| 中文关键词: accumulation uptake phenanthrene fluoranthene mangrove ecosystem Kandelia candel |
| 英文关键词:accumulation uptake phenanthrene fluoranthene mangrove ecosystem Kandelia candel |
| 基金项目:Fujian Natural Science Fund under contract No.D002-002. |
| 作者 | 单位 | E-mail | | 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 | State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China | yuandx@xmu.edu.cn | | LIAO Dan | College of Environment and Plant Protection, Hainan University, Danzhou 71737, China | | | LIU Baomin | State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China | |
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| 中文摘要: |
| 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. |
| 英文摘要: |
| 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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