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×published date:2025-Aug-08
FULL TEXT in - | page 214 - 219
Abstract
This study investigates heavy metal accumulation and ecological risk assessment of water snail (Lymnaea auricularis) harvested from swamps in Kolo Creek, Bayelsa State, Nigeria. L. auricularis (n=5) were harvested from three water bodies (Site 1= Imiringi 1; Site 2=Imiringi 2, and Site 3= Emeyal) around Kolo Creek. Collected water and L. auricularis samples were taken to the laboratory for heavy metal (Fe, Zn, Hg, Mn, Cu, Pb) analyses employing standard operating procedures. Results indicated that L. auricularis accumulated Fe, Cu and Mn in site 1 as compared to the two other sites (2 and 3). Pb was not accumulated in the water snail. Analysis of heavy metal index (MI) and heavy metal evaluation index (HEI) showed that site 1 is contaminated with Fe, while site 2 is moderately polluted with Fe. The three sites (1, 2 and 3) under investigation showed that they are moderately polluted with Mn. In conclusion, long–term exposure of L.auricularis to Fe and Mn may pose a serious ecological risk; hence, it was recommended that regular assessment of heavy metals in water bodies and L. auricularis around Kolo Creek be carried out in order to ascertain the environmental health
Keywords: Ecological Risks Assessment, Lymnaea auricularis Heavy metals, Kolo Creek,,
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