| 温州城市河流河岸带土壤中PAHs的污染特征与来源 |
| 摘要点击 2583 全文点击 1026 投稿时间：2012-02-13 修订日期：2012-07-02 |
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| 中文关键词 多环芳烃 城市河流 河岸带 土壤 污染特征 污染来源 |
| 英文关键词 PAHs urban rivers riparian soils pollution characteristic source apportionment |
| 作者 | 单位 | E-mail | | 周婕成 | 华东师范大学资源与环境科学学院, 地理信息科学教育部重点实验室, 上海 200241 | bebecky@163.com | | 毕春娟 | 华东师范大学资源与环境科学学院, 地理信息科学教育部重点实验室, 上海 200241 | | | 陈振楼 | 华东师范大学资源与环境科学学院, 地理信息科学教育部重点实验室, 上海 200241 | zlchen@geo.ecnu.edu.cn | | 王璐 | 华东师范大学资源与环境科学学院, 地理信息科学教育部重点实验室, 上海 200241 | | | 许世远 | 华东师范大学资源与环境科学学院, 地理信息科学教育部重点实验室, 上海 200241 | | | 潘琪 | 上海市安装工程有限公司, 上海 200080 | |
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| 中文摘要 |
| 为研究城市河流河岸带土壤中多环芳烃(PAHs)的污染特征,于2010年8月沿温州九山外河和山下河河岸带采集了21个表层土壤样品,利用加速溶剂萃取仪(ASE)萃取,净化柱提取净化,使用气相色谱-质谱联用仪(GC-MS)分析了土壤中18种PAHs的含量. 结果表明,温州九山外河和山下河河岸带表层土壤中PAHs含量范围为60.7~3871.3 ng·g-1,山下河河岸带土壤中ΣPAHs含量显著低于九山外河. 两条河流河岸带土壤中的PAHs均以2、3环的低环为主,平均占到PAHs总量的62.47%~72.51%. 与国内外其他研究地区土壤中PAHs含量相比,研究河段河岸带土壤中的PAHs处于中等污染水平,但有3个样品中BaP浓度远大于前苏联土壤标准,应引起足够重视. 利用Ant/(Ant+Phe)和Fla/(Fla+Pyr)比值法和主成分分析方法进行判源,温州城市河流河岸带土壤中的PAHs均表现出明显的燃烧源和石油源的综合来源特征. |
| 英文摘要 |
| Twenty one riparian soil samples along Jiushanwai River and Shanxia River of Wenzhou city were collected in August 2010 to investigate the pollution characteristics of polycyclic aromatic hydrocarbons (PAHs). The samples were extracted by an accelerated solvent extractor (ASE), purified by a purification column and determined by GC-MS. Results showed that the total concentrations of PAHs in the riparian soils ranged from 60.7 ng·g-1 to 3871.3 ng·g-1, and the concentrations of ΣPAHs in soils along the Shanxia River were significantly lower than the levels along Jiushanwai River. The dominant compounds were 2 to 3 rings in the riparian soils along both rivers, which in average accounted for 62.47%-72.51% in ΣPAHs. Compared with the PAHs concentrations in soils of other areas in the world, the riparian soils of the studied rivers were moderately polluted by PAHs, but the concentrations of BaP in three soil samples were much higher than the soil standard value of the former Soviet Union, which should be paid more attention. Based on the ratios of Ant/(Ant+Phe) and Fla/(Fla+Pyr) and principal component analysis results, PAHs in riparian soils of the studied rivers were mainly derived from both the petroleum and combustion. |
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