文章基本信息

标题：Seasonal Metal Distribution in Ondo Coastal Sediment, Nigeria
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作者：IA Ololade ; L Lajide ; IA Amoo 等
期刊名称：Journal of Applied Sciences and Environmental Management
印刷版ISSN：1119-8362
出版年度：2007
卷号：11
期号：4
语种：English
出版社：Department of Pure & Industrial Chemistry, University of Port Harcourt
摘要：The distribution of heavy metals in streambed sediment from an oil-producing region in Nigeria has been examined between the two distinct seasons (dry and wet). The highest mean concentration during the dry season (wet season in brackets) was 2083.3±355.5 (2264.2±347.3)mg/kg Cu and 0.16±0.06 (0.19±0.09)mg/kg Zn respectively. With similar patterns at both seasons, the order of increasing concentration was Zn season. Elevated concentration of Cu in the study was attributable to the nature of Nigerian soil. However, the impact of oil related activities within the study r egion may be contributing to the levels of other metals, particularly Pb. Significant correlations ( r = 0.05; 0.01) were record ed between some of the metals, pH and %clay in the mud fraction. Cadmium vs Ni and Cu vs Ni were both significant at both seasons. The clay fraction of the mud were significantly correlated with Pb (r = 0.949), Cd (r = 0.749) ad Ni (r = 0.869).The partition coefficient data showed that several f actors controlled the adsorption of metals unto the sediment. Comparison of sediment with guideline values indicated anthropogenic enrichment but it was considered that only Cu, and possibly Pb pose potential threats to the ecology of the area.