| 辽东湾表层沉积物的重金属污染特征与质量评价 |
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| 引用本文： | 蓝先洪,孟祥君,梅西,徐扬,黄龙,陈珊珊.辽东湾表层沉积物的重金属污染特征与质量评价[J].海洋学报,2018,40(6):60-73. |
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| 作者姓名： | 蓝先洪 孟祥君 梅西 徐扬 黄龙 陈珊珊 |
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| 作者单位： | 青岛海洋地质研究所 国土资源部海洋环境与油气地质重点实验室, 山东 青岛 266071;青岛海洋科学与技术国家实验室 海洋矿产资源评价与探测技术功能实验室, 山东 青岛 266071 |
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| 基金项目： | 国家自然科学基金（41406077）；国家自然科学重点基金（41330964）；国土资源部海洋区域地质调查项目（GZH201400205，GZH201400201，GZH201400206，DD20160137）。 |
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| 摘 要： | 本文研究了辽东湾表层沉积物中重金属的分布及污染特征，评价其生态风险及环境质量。对辽东湾表层沉积物8种重金属（As、Cu、Cd、Cr、Hg、Ni、Pb、Zn）的空间分布进行了研究，采用Hankanson法和Igeo（地累积指数）分析了该海域重金属潜在生态风险，并评价了该海域的环境质量。在辽东湾葫芦岛附近海域、西南部六股河口东南部海域以及西部近岸海域表层沉积物中As、Cu、Cd、Cr、Hg、Ni、Pb和Zn含量偏高。地累积指数法及生态风险指数法对重金属污染程度评价结果一致，辽东湾生态环境具有潜在危害的重金属主要是Cd、Hg和As，8种重金属潜在生态风险系数由高到低依次为Cd、Hg、Cu、Pb、As、Zn、Ni和Cr，各站位重金属综合潜在生态风险指数均大于150，生态风险总体上处于中等生态风险等级。Cd和Hg是该海域沉积物重金属中主要污染物，局部区域达到中、中-强污染程度。环境质量评价表明，辽东湾表层沉积物重金属引发有害生物效应的可能性不大，但Cd和Hg显著富集，应予以重视。
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| 关 键 词： | 辽东湾 表层沉积物 重金属 质量评价 |
| 收稿时间： | 2017/8/11 0:00:00 |
| 修稿时间： | 2017/10/30 0:00:00 |
Pollution characteristics and quality assessment of heavy metals in surface sediments from the Liaodong Bay |
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| Lan Xianhong,Meng Xiangjun,Mei Xi,Xu Yang,Huang Long and Chen Shanshan.Pollution characteristics and quality assessment of heavy metals in surface sediments from the Liaodong Bay[J].Acta Oceanologica Sinica (in Chinese),2018,40(6):60-73. |
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| Authors: | Lan Xianhong Meng Xiangjun Mei Xi Xu Yang Huang Long and Chen Shanshan |
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| Institution: | Key Laboratory of Marine Hydrocarbon Resource and Environmental Geology, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China;Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China |
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| Abstract: | The present study analyzed the distribution and pollution characteristic of heavy metals in surface sediments from the Liaodong Bay, and then evaluated the potential ecological risk caused by heavy metals to learn the environment quality of sediments. Content distributions of heavy metals including As,Cu,Cd,Cr,Hg,Ni,Pb and Zn in surface sediments from the Liaodong Bay were studied. Simultaneously,the potential ecological risks of these heavy metals were analyzed by the index method on potential ecological risk and geoaccumulation index(Igeo) and Environment quality in surface sediments from the Liaodong Bay was evaluated. The contents of As,Cu,Cd,Cr,Hg,Ni,Pb and Zn in surface sediments appeared higher near the Huludao,southeast sea of the Liugu estuary in the southwest part,near sea in the western. The results of pollution assessment by index of geoaccumulation and the potential ecological risk index were almost the same. The order of ecological risk of these heavy metal is as follow:Cd > Hg > Cu > Pb > As > Zn > Ni > Cr,with Cd,Hg and As being the potential risk elements for the ecological environment from the Liaodong Bay. The assessment result of ecological risk revealed this area belongs to moderate potential ecological risk. The environmental quality assessment showed that the heavy metals in surface sediments from the Liaodong Bay were not likely to cause harmful biological effects,but Cd and Hg were significantly enriched,therefore much attention should be paid to these areas. |
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| Keywords: | Liaodong Bay surface sediment heavy metals quality assessment |
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