Assessment of Heavy Metal Levels, Pollution Indices and Ecological Risks of Floodplain Sediments in Urban Areas in Delta State, Nigeria
The aim of this study is to assess heavy metals levels, pollution indices and ecological risks of floodplain sediments in urban areas in Delta State, Nigeria. The levels of nine heavy metals (Cd, Pb, Cr, Ni, Cu, Co, Mn, Zn and Fe) were measured in floodplain sediments of urban areas in Delta State, Nigeria. Sediment samples from the nine urban areas were collected for three months (July-September) covering the wet season. The sediment samples were digested with aqua regia, and the heavy metal levels in the digests were quantified by means of atomic absorption spectrometry.