ABSTRACT
The Lagos lagoon system is the main water body in Lagos State and it is highly polluted. It receives enormous amount of domestic and industrial wastes from rivers and creeks. In this study, three main Lagos trans-urban streams Odo-lyaalaro, Shasha and Ibeshe creeks that empty into the Lagos Lagoon were examined. For the study, samples were collected bimonthly for a year and the physicochemical properties of both the water and sediments were determined. The pseudototal heavy metal concentrations in surface sediments were determined and the quality of the data were checked with two standard reference materials-CRM BCR 143 and GLAURM. Odo-Iyaalaro was observed to be a polluted water body, with high concentrations of Pb, Cu, Cd, and Zn, with mean concentrations of 21.3 mg/kg, 138.7 mg/kg, 118.6 mg/kg, and 777 mg/kg respectively at point S, and 34.4 mg/kg, 184.8 mg/kg, 153.5 mg/kg and 1044 mg/kg respectively at point 6. In Ibeshe creek, Cu showed the highest concentration of 332 mg/kg at point B which is a point close to a shoreline textile industry. Enrichment factors, using Fe as a normalizer, showed that Pb, Cu, Zn and Cu in sediments of Odo-lyaalaro and Shasha creeks, and Cu in i beshe creek, were products of anthropogenic sources. It also showed that Cr in the Lagos Lagoon sediments was of natural origin. Principal component analysis showed that organic matter builds aggregates and flocs, which effectively concentrate potentially toxic metals and sink down to form a 'fluffy layer.
OLUWABUKOLA, O (2021). Chemometric Analysis,Speciation And Remediation Of Potentially Toxic Metals In The Sediments Of The Lagos Lagoon System. Afribary. Retrieved from https://afribary.com/works/chemometric-analysis-speciation-and-remediation-of-potentially-toxic-metals-in-the-sediments-of-the-lagos-lagoon-system
OLUWABUKOLA, OYEYIOLA "Chemometric Analysis,Speciation And Remediation Of Potentially Toxic Metals In The Sediments Of The Lagos Lagoon System" Afribary. Afribary, 07 May. 2021, https://afribary.com/works/chemometric-analysis-speciation-and-remediation-of-potentially-toxic-metals-in-the-sediments-of-the-lagos-lagoon-system. Accessed 30 Apr. 2024.
OLUWABUKOLA, OYEYIOLA . "Chemometric Analysis,Speciation And Remediation Of Potentially Toxic Metals In The Sediments Of The Lagos Lagoon System". Afribary, Afribary, 07 May. 2021. Web. 30 Apr. 2024. < https://afribary.com/works/chemometric-analysis-speciation-and-remediation-of-potentially-toxic-metals-in-the-sediments-of-the-lagos-lagoon-system >.
OLUWABUKOLA, OYEYIOLA . "Chemometric Analysis,Speciation And Remediation Of Potentially Toxic Metals In The Sediments Of The Lagos Lagoon System" Afribary (2021). Accessed April 30, 2024. https://afribary.com/works/chemometric-analysis-speciation-and-remediation-of-potentially-toxic-metals-in-the-sediments-of-the-lagos-lagoon-system