玉门市老君庙油田土壤石油污染状况调查

The Petroleum Pollution in the Soil of Laojunmiao Oilfield of Yumen City

为探明老君庙油田土壤石油污染情况,采用索氏抽提-重量法分别测定了该油田4个采样区3个土样层面(表层、下层及底层)土壤的含油量,并对其在土壤中的迁移规律进行了初步研究。结果表明,老君庙油田土壤石油污染非常严重,且土壤含油量随土壤粒径减小而增大,最高可达83601mg/kg。尽管石油污染物在土壤中存在下渗现象,但是由于黄土对其吸附能力较强,使其主要集中于土壤浅层。

In order to study the petroleum pollution in the soil of Laojunmiao oilfield, the oil concentrations of the soil samples from three layers （surface, substrate and understratum） in four sample districts in Laojunmiao oilfield were analyzed by Soxhlet Extraction- Gravimetric method, and then the transferring of oil pollutant in soil was studied. It is shown that the petroleum pollution in the soil of Laojunmiao oilfield is serious with a maximum oil concentration of 83601 mg/kg. Moreover, because of the strong adsorption of oil pollutant by ocher, the oil pollutant is mainly distributed in the surface layer of soil and the oil concentration of soil increases with the decrease of the diameter of soil granule.