| Spatial and temporal distribution and sources of polycyclic aromatic hydrocarbons in sediments of Taihu Lake, eastern China | |
Zhi Tang; Jianyang Guo ; Haiqing Liao; Xiaoli Zhao; Fengchang Wu; Yuanrong Zhu; Liang Zhang; John P. Giesy
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| 2015 | |
| 发表期刊 | Environmental Science and Pollution Research
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| 卷号 | 22期号:7页码:5350-5358 |
| 摘要 | Spatial and temporal distributions of concentrations of polycyclic aromatic hydrocarbons (PAHs) in surface sediments and dated sediment core from Taihu Lake in eastern China were determined. The sum of concentrations of PAHs (sum of total 16 USEPA priority PAH (Sigma PAHs)) of the entire Taihu Lake ranged from 2.9x10(2) to 8.4x10(2) ng/g dry mass (dm). Concentrations of SPAHs in surface sediments near more urbanized regions of the lake shore were greater than those in areas more remote from the urban centers. Temporal trends in concentrations of SPAHs ranged from 5.1x10(2) to 1.5x10(3) ng/g dm, increasing from deeper layers to surface sediments with some fluctuations, especially in the past three decades after the inception of China's Reform and Opening Up Policy, in which China's economy and urbanization underwent rapid development. Forensic analysis of surface sediments indicates that PAHs originated primarily from combustion of grass/wood/coal except for the special function water area, which was most likely influenced by petroleum products of traveling vessels. Vertical profiles of relative concentrations of PAHs suggested that the contribution of lesser-molecular-weight PAHs was gradually decreasing, while due to the heavier consumption of petroleum products, the proportion of greater-molecular-weight PAHs was increasing. When assessed by use of the rather conservative, apparent effect threshold method, concentrations of SPAHs in sediments from most locations in Taihu Lake are predicted to pose little risk of harm to benthic invertebrates. |
| 关键词 | Polycyclic Aromatic Hydrocarbons Sediment Distribution Source Combustion Risk Asia |
| 学科领域 | 环境地球化学 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.gyig.ac.cn/handle/352002/5948 |
| 专题 | 环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文 环境地球化学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhi Tang,Jianyang Guo,Haiqing Liao,et al. Spatial and temporal distribution and sources of polycyclic aromatic hydrocarbons in sediments of Taihu Lake, eastern China[J]. Environmental Science and Pollution Research,2015,22(7):5350-5358. |
| APA | Zhi Tang.,Jianyang Guo.,Haiqing Liao.,Xiaoli Zhao.,Fengchang Wu.,...&John P. Giesy.(2015).Spatial and temporal distribution and sources of polycyclic aromatic hydrocarbons in sediments of Taihu Lake, eastern China.Environmental Science and Pollution Research,22(7),5350-5358. |
| MLA | Zhi Tang,et al."Spatial and temporal distribution and sources of polycyclic aromatic hydrocarbons in sediments of Taihu Lake, eastern China".Environmental Science and Pollution Research 22.7(2015):5350-5358. |
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