| 摘要: |
| 用原子吸收法测定了渤海湾表层沉积物中重金属的含量,同时用 2种评价方法对该海域底质环境进行了评价。结果表明:沉积物中汞、锌含量平均值超过标准,其余项目未发现超标;其分布特征由于受沿岸不同污染源的污染影 响,重金属污染物难以形成一定规律的分布状态。同时该海域底质环境质量总指数已达到污染程度和很强的生态危害,其中主要污染元素是Hg,已达重污染,并形 成极强的生态危害。 |
| 关键词: 渤海湾 表层沉积物 重金属 相关分析 污染评价 |
| DOI： |
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| 基金项目:国家重点基础研究发展规划项目(2007CB407306) |
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| Heavy metals and pollution assessment in surface sediments of Bohai Bay |
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| Abstract: |
| The contents of heavy metals in the surface sediments from Bohai Bay are determined by atomic absorption spectrum(AAS) and two different methods of assessment of sediment quality are used to envaluate the sediment environment of Bohai Bay. And the results of measurement show that the sediments are mostly polluted by Zn and Hg, but the average values of the other metals are all below the standards compared with "national coastal background standard value". The spatial distributions of heavy metals do not form a certain feature because of the different pollution sources from the coast. And the results of evaluation indicate that the sediment quality is markedly polluted and Hg is the primary element of pollution, which is seriously harmful to ecology. |
| Key words: Bohai Bay surface sediments heavy metal correlation analysis quality assessment. |
