| Popis: |
The concentration level and distribution of Cadmium (Cd) were determined from hydrocarbon remediated soil and sediment samples in some parts of the Niger Delta. The results from the descriptive analysis, geo-accummulation index (Igeo) and comparison with guideline values were interpretated as having high potential threat to the environment and human health; the concentration level of Cadmium in the remediated soil and remained higher than the target value of 0.8mg/kg given by the Department of Petroleum Resources (DPR) in the Environmental Guidelines and Standards for Petroleum Industry in Nigeria (EGASPIN) and the World Health Organization (WHO) guideline of 0.003mg/kg. the mean Cadmium concentration values were as high as 50.5mg/kg and 7.29mg/kg in soil and sediment, respectively. Of the topsoil evaluated, 25% of the sample data have most of its Cd concentration values about 2 to 13 times greater than the 0.8mg/kg target value and more than 100% greater than WHO guideline value of 0.003mg/kg. Comparable high concentration values were observed in the median and upper quartile having 50% and 75% of the data, respectively. The acidity of most of the remediated sites evaluated showed low pH values ( |
