Distribution pattern of polycyclic aromatic hydrocarbons in particle-size fractions of coking plant soils from different depth
文献类型：SCI/SSCI论文
| 作者 | Liao X. Y. ; Ma D. ; Yan X. L. ; Yang L. S. |
| 发表日期 | 2013 |
| 关键词 | PAHs Particle size Organic matter Distribution Depth persistent organic pollutants polychlorinated-biphenyls black carbon urban soils sediments pahs sorption matter harbor fate |
| 英文摘要 | The concentrations of 16 priority polycyclic aromatic hydrocarbons (PAHs) in four size fractions (< 2, 2-20, 20-200, > 200 mu m) in soils at different depth from a heavily contaminated crude benzol production facility of a coking plant were determined using GC-MS. Vertically, elevated total PAHs concentrations were observed in the soils at 3.0-4.5 m (layer B) and 6.0-7.5 m (layer C), relatively lower at 1.5-3.0 m (layer A) and 10.5-12.0 m (layer D). At all sampling sites, the silt (2-20 mu m) contained the highest PAHs concentration (ranged from 726 to 2,711 mg/kg). Despite the substantial change in PAHs concentrations in soils with different particle sizes and lithologies, PAHs composition was similarly dominated by 2-3 ring species (86.5-98.3 %), including acenaphthene, fluorene, and phenanthrene. For the contribution of PAHs mass in each fraction to the bulk soil, the 20-200 mu m size fraction had the greatest accumulation of PAHs in loamy sand layers at 1.0-7.5 m, increasing with depth; while in deeper sand layer at 10.5-12.0 m, the > 200 mu m size fraction showed highest percentages and contributed 81 % of total PAHs mass. For individual PAH distribution, the 2-3 ring PAHs were highly concentrated in the small size fraction (< 2 and 2-20 mu m); the 4-6 ring PAHs showed the highest concentrations in the 2-20 mu m size fraction, increasing with depth. The distribution of PAHs was primarily determined by the sorption on soil organic matter and the characteristics of PAHs. This research should have significant contribution to PAH migration study and remediation design for PAHs-contaminated sites. |
| 出处 | Environmental Geochemistry and Health |
| 卷 | 35 |
| 期 | 3 |
| 页 | 271-282 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0269-4042 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30418]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liao X. Y.,Ma D.,Yan X. L.,et al. Distribution pattern of polycyclic aromatic hydrocarbons in particle-size fractions of coking plant soils from different depth. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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