Distribution of heavy metals in different size fraction of sediment at Setiu Lagoon

Abstract

The concentration and distribution of heavy metals (Cd, Cu, Zn and Pb) in different size fraction of sediment at Setiu Lagoon was carried out and the correlation between concentration of heavy metals with size fraction ( 40 µm, 63 µm, 90 µm, 125 µm, 250 µm, and 500 µm). Beside the sedimentological characteristics of the sediment was studied also. Cadmium shows the very high correlation between particle size and concentration of heavy metals. Toe r value for th.is correlation is 0.8152 with p < 0.01. It is followed by Zinc (Zn) that also have high correlation with r value = 0.7454, p < 0.01. The correlation for Pb is define as moder a te correlation; substantial related with r = 0.6561, p < 0.01. Cu also shows the moderate correlation with r = 0.5415, and p < 0.05. It shows that the concentration of heavy metals are tends to decrease with increasing particles size of sediment