Concentration, ecological risk and enrichment factor assessment of selected heavy metals in sediments from New Calabar River, Nigeria

Nwineewii, J. D.; Edori, Onisogen Simeon; Onuchukwu, P.U.G.

doi:10.4314/jasem.v22i10.20

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…It has not been known to possess any important physiological characteristics in animal or plant system, but rather acts as an inhibitor of many regular systems in humans. Elevated levels of Pb in humans is poisonous and may possibly cause severe disease in animals [20] or a condition known as plumbism [21]. Negative effects of Pb to marine or freshwater plants and animals namely algae, benthic invertebrates, and embryos and fingerlings of freshwater fish and amphibians comprise loss of sodium, reduction in performance capacity, development difficulties, and irregular growth of algae [22].…”

Section: Lead (Pb)mentioning

confidence: 99%

"Assessment of Heavy Metal Pollution in Sediments of Silver River, Southern Ijaw, Bayelsa State, Nigeria"

OS¹

2021

EAES

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The concentrations of heavy metals in sediment of Silver River were determined using atomic absorption spectrophotometer. The result indicated the presence of heavy metals at different concentrations. The concentrations of the heavy metals showed that Fe>Mn>Zn>Cu>Ni>Cr>Pb>Cd>Hg. The mean concentrations of the measured metals in mg/Kg were Cd (2.638±0.900), Pb (6.004±1.368), Cr (6.228±1.752), Ni (6.570±1.102), Cu (8.754±2.386), Zn (15.320±3.486), Fe (219.593±22.641), Mn (54.172±51.645) and Hg (0.006±0.005). All the concentrations of the heavy metals examined when compared with those of average value of heavy metals in shale showed that all the metals were lower than their corresponding world average values except Cd. Contamination factor index analysis of the sediment heavy metals burden showed that the sediment was polluted with Cd, contaminated with Cu, Zn and Cr and uncontaminated with Pb, Fe, Mn and Hg, Ni. Thus, showing that despite the heavy oil discharges from artisanal refining practices, the sediment is yet to be contaminated. The obtained values are yet to implicate anthropogenic input sources of heavy metals into the river. However, frantic effort should be put in place to curb input sources into the river.

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Section: Lead (Pb)mentioning

confidence: 99%