| 长江口水体中重金属形态交换过程的研究 |
| 摘要点击 2434 全文点击 1805 投稿时间：1995-02-22 |
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| 中文关键词 重金属 溶解态 颗粒态 交换过程 |
| 英文关键词 trace metals soluble spepies suspended particles Changjiang river |
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| 中文摘要 |
| 研究了重金属在水体中溶解态和颗粒态的含量分布,并以一个代表性水平剖面和垂直剖面分析了金属形态交换过程。其动态交换是,重金属由颗粒态沿水平方向交换时向溶解态转化,形态转化强度为Ni>Fe>Co>Cu>Mn>Pb;重金属的垂向交换过程,都是被铁锰(水合)氧化物及有机质吸附,向金属铁锰氧化物态转化,形态转化强度为Pb>Cu>Mn>Fe>Ni>Co,最后得出长江口海域金属污染程度及环境现状。 |
| 英文摘要 |
| The present paper deats with the exchange process and distribution of particulate species,soluble species,and various other species of suspended particles trace metals from waterbody across the main axis of the Changjiang river diluted waler in flood season. The variation trend of its state shows that trace metals along horizontal profile tended to tranfer from particulate forms into soluble form,and the translation priorly of metals forms was Ni>Fe Co>Cu>Mn>Pb. The vertical changes of their chemical forms in aqueous environment was adsorbed by Fe-Mn oxides and organic detritus; the metals bound Fe-Mn oxides combined species was the most important speciation j and the tranferable forder of metals forms is pb>Cu> Mn>Fe>Ni>Co. Finally,the environmental status and pollution level in the water column of Changjiang estuary was discussed. |
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