Calculation of Pollution Indicators for Heavy Metals in the Surface Soil of Nasiriyah Oil Field

Abstract

The study included the assessment of the pollution indicators of heavy metals in the surface soil of the Nasiriyah oil field. Nine soil samples were collected from selective sites of the oil field, and the soil samples were analyzed to find the concentration of heavy metals such as Co, Cr, Cu, Ni, pb, V and Zn.  The results are compared with the global standards.  Zn, Cr, Ni, V, Co and Pb possess high value which indicate pollution due to the industrial activities. The factor of enrichment is determined to find the saturation factor, processing and converting raw concentrations values and finding the local background for the element’s concentration in the local soil. Regarding the values of the enrichment factor (EF)) in the soil samples were at an average between (21.7-0.28) according to the following (Cu > V > pb > Cr > Co > Ni > Zn). The contamination factor (CF) values in the samples of soil study area were at an average between (11.91-0.21) according to (Zn > Ni > Co > Cr > Pb > V >Cu).  The highest PLI values   at S9, S8, S4 and S3, which are >1 indicate that the soil in these stations is polluted, while soil of the stations S1, S2, S5, S6 and S7 are <1 and thus is not polluted.