Abstract

The concentrations of selected potentially toxic metals and other soil physico-chemical variables in soil receptacles of a solid waste dumpsite at Onne, Nigeria were assessed to ascertain the levels of contamination and ecological risks. Surface soils (0 – 20 cm depth) from four sampling areas (north, south, east and west) of the dumpsite were analyzed for Cd, Pb, Ni, As and Cr, using atomic absorption spectroscopy. Single and integrated ecological risks indices were calculated using established models. Results revealed the mean values (mg/kg) of Cd (1.00 – 3.09), Pb (125.37 – 285.48), Ni (10.37 – 16.17), As (0.26 – 0.87), Cr (52.16 – 77.17). Assessment of ecological risk indices for north, south, east and west showed {PLI (2.38, 1.27, 1.17 and 1.33), EF (1.01, 16.0, 13.90 and 56.0), Cd (21.50, 11.10, 9.49 and 10.90), PERI (392.0, 132.0, 148.0 and 157.0), PIAvg (5.17, 2.55, 2.27 and 2.56), PINemerow (7.75, 3.80, 3.18 and 3.38) } respectively. These implied that the soils around the dumpsite area were polluted due to enrichment of the selected metals and therefore of low quality. Ecological risk reduction strategies were also recommended.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.