| 电子废物拆解区河流沉积物中多氯联苯的污染水平、分布及来源 |
| 摘要点击 1638 全文点击 936 投稿时间：2011-09-24 修订日期：2011-11-07 |
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| 中文关键词 电子废物 沉积物 多氯联苯 分布 聚类分析 来源 |
| 英文关键词 electronic waste sediments polychlorinated biphenyls (PCBs) distribution hierarchical cluster analysis (HCA) source |
| 作者 | 单位 | E-mail | | 王学彤 | 上海大学环境与化学工程学院,上海 200444 | wangxt0323@yahoo.com.cn | | 李元成 | 上海大学环境与化学工程学院,上海 200444 | | | 缪绎 | 上海大学环境与化学工程学院,上海 200444 | | | 张媛 | 上海大学环境与化学工程学院,上海 200444 | | | 孙阳昭 | 中华人民共和国环境保护部,北京 100035 | | | 吴明红 | 上海大学环境与化学工程学院,上海 200444 | | | 盛国英 | 上海大学环境与化学工程学院,上海 200444
中国科学院广州地球化学研究所有机地球化学国家重点实验室,广州 510640 | | | 傅家谟 | 上海大学环境与化学工程学院,上海 200444
中国科学院广州地球化学研究所有机地球化学国家重点实验室,广州 510640 | |
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| 中文摘要 |
| 用GC-μECD分析法测定了浙江台州路桥河流表层沉积物中144种多氯联苯同类物的含量. 目的是了解该地区河流沉积物中PCBs的污染水平、空间分布特征和可能来源. 结果表明, 在路桥区河流沉积物样品中PCBs同类物均有不同程度检出, ∑PCBs的浓度范围1.66~5930 ng·g-1, 均值为763 ng·g-1. 样品组成以tri-CBs、tetra-CBs和penta-CBs为主, 含量百分比范围分别为2.63%~57.6%、 10.4%~54.6%和7.82%~46.1%; octa-CBs和deca-CB含量最低, 含量百分比范围分别为0~8.57%和0~11.0%. 聚类分析表明, 22个样品的污染与Ar1248有关, 9个样品的污染与Ar1254有关; 6个样品的污染与Ar1016、Ar1232 和Ar1242有关. 与国内外其它研究及相关环境质量标准相比, 该区域表层沉积物PCBs污染处于中高水平, 具有较高的生态风险. |
| 英文摘要 |
| The concentrations of 144 polychlorinated biphenyls (PCBs) in the river sediments from Luqiao were analyzed by GC-μECD. The objectives of this study were to understand the contents, spatial distribution and possible sources of PCBs. The ∑PCBs concentrations detected in the river sediments were in the range of 1.66 to 5930 ng·g-1, with a mean of 763 ng·g-1. Tri-CBs, tetra-CBs and penta-CBs were the primary PCB congeners in all samples, accounting for 2.63%-57.6%, 10.4%-54.6% and 7.82%-46.1%, respectively. Octa-CBs and deca-CBs were the minor PCB congeners in all samples, with the percentages of 0-8.57% and 0-11.0%, respectively. The hierarchical cluster analysis (HCA) showed that 22 samples were mainly polluted by Ar1248, 9 samples were polluted by Ar1254, and 6 samples were contaminated by Ar1016, Ar1232 and Ar1242. The PCBs concentrations found in the present study were at an upper-middle level compared with those in other studies in the world. The PCBs pollution in the present area had a high ecological risk. |
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