| 杭州湾南岸潮滩重金属污染调查和评价 |
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| 引用本文： | 杨显辉,金爱民,庞宏娇.杭州湾南岸潮滩重金属污染调查和评价[J].海洋开发与管理,2018,35(4):30-35. |
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| 作者姓名： | 杨显辉 金爱民 庞宏娇 |
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| 作者单位： | 浙江大学海洋学院海洋地质与资源研究所 |
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| 基金项目： | 浙江大学自由发展基金项目“杭州湾沉积物重金属地球化学特征的研究”. |
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| 摘 要： | 文章于杭州湾南岸潮滩布设3个采样断面并采集沉积物样本,采用地质累积指数法和潜在生态危害指数法评价重金属污染状况及其生态风险。研究结果表明:沉积物基本为粗粉砂和细砂,由海向陆粒径逐渐变细且分选性逐渐转差;所有站位重金属含量均值从高到低依次为Pb、Zn、Cu、Cr、Cd和Hg,断面重金属含量从高到低依次为高潮滩、中潮滩和低潮滩,Cu、Hg和Pb的空间分布差异较大;本次采样调查结果与邻近区域数据和同区域历史数据相比有所不同;根据地质累积指数评价结果,Cu、Pb和Zn有不同程度的污染;根据污染指数和潜在生态危害指数评价结果,Zn、Cd和Cr与地质累积指数评价结果区别较大,研究区重金属总体污染程度为低度和中度,除Cd外其他重金属处于低生态危害水平,研究区重金属总体生态危害为低度。调查和研究成果可为分析区域重金属环境影响和制定污染控制对策提供科学依据。
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| 关 键 词： | 沉积物 重金属 潮滩 海洋环境 生态风险 |
Investigation and Evaluation of Heavy Metal Pollution on the Tidal Flat of the South Bank of Hangzhou Bay |
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| YANG Xianhui,JIN Aimin and PANG Hongjiao.Investigation and Evaluation of Heavy Metal Pollution on the Tidal Flat of the South Bank of Hangzhou Bay[J].Ocean Development and Management,2018,35(4):30-35. |
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| Authors: | YANG Xianhui JIN Aimin and PANG Hongjiao |
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| Affiliation: | Institute of Marine Geology and Resources,Ocean College of Zhejiang University,Institute of Marine Geology and Resources,Ocean College of Zhejiang University and Institute of Marine Geology and Resources,Ocean College of Zhejiang University |
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| Abstract: | In this paper,3 sampling sections and sediment samples were arranged on the tidal flat of the south bank of Hangzhou Bay,and the pollution status and ecological risk of heavy metals were evaluated by the method of geologic cumulative index and potential ecological hazard index.The results showed that the sediment is basically coarse silt and fine sand,and the grain size from sea to land gradually becomes thinner and the sorting is gradually poor.The heavy metal contents of all stations are Pb,Zn,Cu,Cr,Cd and Hg in order,and the heavy metal contents from high to low are the high tidal flat,medium tidal flat,and low tidal flat,and the spatial distribution of Cu,Hg and Pb varied greatly.The results of this sampling survey are different from those of neighboring regions and regional historical data.According to the evaluation results of the geological cumulative index,Cu,Pb and Zn are polluted to vary degrees.According to the pollution index and potential ecological hazard index,Zn,Cd and Cr are different from the geological Cumulative index,the total pollution degree of heavy metals in the study area is low and moderate,other heavy metals are in lower ecological hazard level except Cd,the overall ecological hazard of heavy metals in the study area is low.The results of investigation and research can provide scientific basis for analyzing the environmental impact of heavy metals in the region and formulating pollution control countermeasures. |
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