铜陵顺安河沉积物中重金属的特征与迁移转化
首发时间:2007-12-17
摘要:通过对铜陵顺安河沉积物中重金属总量及形态的分析实验,研究重金属各形态在沉积物中的分布特征,并探讨重金属在迁移过程中的变化。结果显示,河流沉积物中有大量金属积累,在迁移过程中总量逐渐降低,不同的重金属在沉积物中各形态比例差别很大。沿河流向下,Cd的有效态始终最高,均占总量的60%以上;Cu的总量很高,并且在迁移过程中有效态逐渐升高;Pb和Zn的变化较小;Cr在沉积物中始终以残渣态为主。
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Characteristics and Migration of Heavy Metals in Sediments in Shun An River of Tong Ling
Abstract:Total contents and forms of heavy metals in river sediments were analyzed, and were researched heavy metals in sediments in the form of the distribution and change of heavy metals in the process of migration. Results showed that a large number of river sediments of metal accumulation in the process of relocation of the total decreased gradually, the forms of different heavy metals in sediments were so different. Along the river flows, the effective species of Cd is always the highest, has the total 60%possession;the content of Cu is high, and in the process of relocation of the effective species gradually increased; Pb and Zn were little changed; Cr in sediments always in the state mainly to the residue species.
Keywords: Shun an River of Tong Ling sediment heavy metals migration
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No.1704717693011978****
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