Abstract
Chemical properties of bottom sediment in manmade reservoir were analyzed. Principal component analysis and factor analysis were conducted to differentiate the sources of heavy metals. The mean concentrations of heavy metals decrease in the following order: Mn>Pb>As>Zn>Cr>Cu. The spatial distribution of heavy metals shows that oil palm plantation and modern agricultural activities influence heavy metal distribution. Heavy metal contents were higher in the west wing and could be associated with micronutrient fertilizer from oil palm plantation with remarkable increases, especially for Zn, Cu and Mn.
Highlights
Chemical properties of bottom sediment in manmade reservoir were analyzed
Seydan Dam, Turkey show that the application of fertilizer and pesticide in agricultural activities is the main source of anthropogenic input, Zn and
Study area: Sembrong Reservoir is located in the southern part of Peninsular Malaysia between latitudes
Summary
Chemical properties of bottom sediment in manmade reservoir were analyzed. Principal component analysis and factor analysis were conducted to differentiate the sources of heavy metals. Heavy metal contents were higher in the west wing and could be associated with micronutrient fertilizer from oil palm plantation with remarkable increases, especially for Zn, Cu and Mn. Two main rivers flow into the reservoirs, namely, Sembrong River and Marpo River. Heavy metal contamination in sediments could have long-term implications on human health because surface water is the main source of water supply. The accumulation of heavy metal in reservoirs is controlled by complex physical and chemical adsorption mechanisms that are triggered by natural processes or human activities (Spencer and MacLeod, 2002; Abraham, 1998; Ghrefat and Yusuf, 2006; Çevik et al, 2009). Studies on risk assessment and ecological risk of heavy metals in reservoir sediment have been conducted by
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