胜利油田土壤中重金属的污染特征分析

Contamination characteristic analysis of heavy metals in the soil of Shengli Oilfield

长期油田开发造成了胜利油田采油区土壤环境质量恶化,然而目前对油田土壤中重金属的污染特征尚不十分明确。本文通过对胜利油田孤岛油区土壤中8种重金属(Cu、Zn、Pb、Cd、Cr、Ni、V和Mn)进行采样和分析,发现研究区土壤中Cu、Zn、Cd和Ni的富集因子分别达到了3.44、5.79、8.08和2.47,存在不同程度的富集现象,且具有潜在污染风险;重金属形态分析结果表明,油区土壤中重金属的形态分布很可能受到了石油污染的影响。

Long-term oil exploitation causes quality deterioration of the soil in Shengli Oilfield. However, we know very little about the contamination characteristics of the heavy metals in the soil of oilfields. We discovered that enrichment factors of Cu, Zn, Cd and Ni were 3.44, 5. 79, 8.08 and 2.47 and potential pollution risk existed through the sampling and analysis of eight heavy metals （Cu, Zn, Pb, Cd, Cr, Ni, V and Mn） in the soit of Gudao oil region of Shengli Oitfield. Heavy metal speciation analysis results reveal that the speciation distribution of heavy metals are probably affected by oil pollution in the soil.