K. Fahmida; I. M. Rafizul
Abstract
The principle objective of this study was to evaluate the soil quality and the level of contamination of soil by heavy metals adapting various developed index in a selected waste disposal site at Rajbandh, Khulna, Bangladesh. To theses ...
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The principle objective of this study was to evaluate the soil quality and the level of contamination of soil by heavy metals adapting various developed index in a selected waste disposal site at Rajbandh, Khulna, Bangladesh. To theses endeavor, ten soil samples were collected from the selected locations and then the relevant elements of Al, Fe, Mn, Cr, Cu, Pb, Zn, Ni, Cd, As, Co, Sb, Sc and Hg were measured and monitored using standard method. To estimate the contamination situation of soil, contamination factor (CF), enrichment factor (EF) and geo-accumulation index (Igeo) and potential ecological risk index (PERI) were computed using geological background values. In addition, for assessing soil quality, Pearson's correlation coefficients analysis was also performed. Furthermore, this study revealed that the values of CF and Igeo in soils around the waste disposal area affected from the contamination of heavy metals mostly by Pb, Cd and Sb. In contrast, Pearson's correlation indicated that the sources of metals are almost the same and these heavy metals might be derived from the waste accumulation activity. Dump sites have great potential for energy extraction if the high valued compounds to be extracted.
G. A. Ebong; E. A. Moses
Abstract
Roadside dusts from high traffic density areas in Uyo, Ikot Ekpene, Eket, Ibeno, Abak and Itu local government areas of Akwa Ibom State, Nigeria were analyzed for concentrations of total cadmium, chromium, copper, nickel, zinc and lead. Optimized Bureau Community of Reference (BCR) speciation method ...
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Roadside dusts from high traffic density areas in Uyo, Ikot Ekpene, Eket, Ibeno, Abak and Itu local government areas of Akwa Ibom State, Nigeria were analyzed for concentrations of total cadmium, chromium, copper, nickel, zinc and lead. Optimized Bureau Community of Reference (BCR) speciation method was used for determination of metals forms. Results indicated that, mean concentrations of Cd and Cu were higher while concentrations of Cr, Ni, Zn and Pb were lower than their standards. Cd and Cr existed predominantly in acid extractable form, Cu and Zn in residual fraction while Ni and Pb mostly in reducible form. Cd and Pb were in the high risk class while Cu, Ni and Zn were within the low risk zone. Ibeno as the most contaminated area studied, closely followed by Uyo while Abak was the least contaminated area. Correlation analysis indicated strong positive association and common source for the metals evaluated in this study.
