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| 东平湖不同粒径底泥沉积物中汞的形态分布 |
| M orphology D istribution ofM ercury in SedimentsofD ifferent Sizesin the Dong-ping Lake |
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| DOI： |
| 中文关键词: 沉积物 汞 形态分布 东平湖 |
| 英文关键词: Sediments Mercury Morphologic distribution Dong -ping Lake |
| 基金项目:山东省环保局科技计划基金资助项目 (2003017) |
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| 中文摘要: |
| 对东平湖底泥沉积物中重金属汞的总量和形态及沉积物形貌进行了研究, 从粒径分布与沿程分布分析了汞元素的形态分布特征。结果表明, 东平湖底泥沉积物的主要粒径<63μ m, 且沉积物颗粒粒径越小, 其表面的吸附物越多。不同粒级沉积物中汞的存在均以可氧化提取态形式为主, 汞的形态分布与沉积物粒径的相关性可能受到原生矿物及因粒度效应产生吸附差异的综合影响。 汞形态的沿程分布特征表明, 湖南采样点受污染严重, 潜在危害较大。 |
| 英文摘要: |
| Totalcontentand morphology ofmercuryin sedimentsin Dong-ping Lake were determined. The characteristic ofmorphologic distribution wasdiscussed from two aspects-size distribution and distance distribution. The resultsshowed thatthe smallerthe size ofsurface sediments was, the more mattersitadsorbed. The mostparticulate sizesofsedimentsin the Dong - ping Lake werelessthan< 63 μ m. Mercury existed in sediments with differentsizesasoxidizablefraction primarily, andtherelationship between morphologyofmercury and particulate sizeofsediments wasinfluenced by the mineralcomposition and the adsorption involved in granularity effect. Theresultsofdistance distribution ofmercuryindicatedthatsouthlake washeavypolluted and had poten tialharm to environment. |
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