IMPACTS OF CRAB BIOTURBATION ON THE FATE OF POLYCYCLIC AROMATIC HYDROCARBONS IN SEDIMENT FROM THE BEITANG ESTUARY OF TIANJIN, CHINA
文献类型：期刊论文
| 作者 | Qin, Xuebo1; Sun, Hongwen1; Wang, Cuiping1; Yu, Yong1; Sun, Tieheng2 |
| 刊名 | ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
 |
| 出版日期 | 2010-06-01 |
| 卷号 | 29期号:6页码:1248-1255 |
| 关键词 | Bioturbation Helice Tientsinensis Polycyclic Aromatic Hydrocarbons Sediment Estuary |
| ISSN号 | 0730-7268 |
| DOI | 10.1002/etc.154 |
| 英文摘要 | Bioturbation by the burrowing crab Helice tiensinensis was investigated to determine its impact on polycyclic aromatic hydrocarbon (PAH)-contaminated estuarine sediments. The concentrations of 16 U.S. Environmental Protection Agency (U.S. EPA) priority PAHs in sediment and pore water from a crab bed (including surface and burrow samples) and a control area, as well as in crabs, were measured. The total concentration of the 16 U.S. EPA priority PAHs in surface sediment of the crab bed (average 2,772 ng/g dry weight) was significantly higher than in the control area (1,173 ng/g dry weight). In the crab bed, the total concentration of PAHs in burrow sediment (1,239 ng/g dry weight) was lower than in surface sediment, and a similar trend was found for most of the individual PAHs, except for indeno[1,2,3-cd]pyrene, and benzo[ghi]perylene. The enhanced PAH desorption in the burrow, which could be attributed to the increase in dissolved organic matter in pore water as well as the mechanical mixing by the crab, is expected to increase PAH flux to the sea. In addition to increased flushing to the sea, incorporation of PAHs in crab biomass and metabolism of PAHs by the crab, stimulated microbial degradation, was proposed as an ignorable factor that lowered the PAH concentration in burrow sediment, because crab bioturbation increases the abundance and activity of microorganisms through several means. Log K(OW) and log K(OC) correlated well for individual PAHs in sediment in the control area, although this correlation was poor for sediments in the crab bed. The log biota-sediment accumulation factor (BSAF) of PAHs exhibited a negative relationship with log K(OW), suggesting that the bioaccumulation of sorbed PAHs was controlled primarily by their bioavailability. Environ. Toxicol. Chem. 2010;29:1248-1255. (C) 2010 SETAC |
| WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:000280226800007 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://210.72.129.5/handle/321005/121529]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Sun, Hongwen |
| 作者单位 | 1.Nankai Univ, Coll Environm Sci & Engn, MOE Key Lab Pollut Proc & Environm Criteria, Tianjin 300071, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Xuebo,Sun, Hongwen,Wang, Cuiping,et al. IMPACTS OF CRAB BIOTURBATION ON THE FATE OF POLYCYCLIC AROMATIC HYDROCARBONS IN SEDIMENT FROM THE BEITANG ESTUARY OF TIANJIN, CHINA[J]. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,2010,29(6):1248-1255. |
| APA | Qin, Xuebo,Sun, Hongwen,Wang, Cuiping,Yu, Yong,&Sun, Tieheng.(2010).IMPACTS OF CRAB BIOTURBATION ON THE FATE OF POLYCYCLIC AROMATIC HYDROCARBONS IN SEDIMENT FROM THE BEITANG ESTUARY OF TIANJIN, CHINA.ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,29(6),1248-1255. |
| MLA | Qin, Xuebo,et al."IMPACTS OF CRAB BIOTURBATION ON THE FATE OF POLYCYCLIC AROMATIC HYDROCARBONS IN SEDIMENT FROM THE BEITANG ESTUARY OF TIANJIN, CHINA".ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 29.6(2010):1248-1255. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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