新疆不同石油产区油污土壤含油量的测定

Determination of mineral oil content in soil in differen oildom of Xinjiang

目的了解新疆不同油田产区油污土壤中石油的含量,为今后土壤的石油污染治理提供理论依据。方法采用紫外分光光度法,选择不同波长分别测定克拉玛依油田和鄯善油田石油产区油污土壤中石油的含量。结果克拉玛依油田的重油和吐哈油田轻质油的最适合测量波长分别为254nm和230nm,建立的回归方程分别为y=0.00142+0.10096x,相关系数r=0.99949和y=-0.00134+0.06693x,相关系数r=0.99809;采用紫外分光光度法测量不同石油产区土壤标本中的石油含量,发现克拉玛依重油和鄯善油田油污土壤中石油含量平均为0.86mg/g和1.87mg/g。结论针对不同石油产区主要污染油种类,选择不同波长并建立了相应的回归方程,然后采用紫外分光光度法,检测出不同石油产区油污土壤中石油含量,发现克拉玛依油田土壤含油率低于吐哈油田,为今后土壤的石油污染治理提供了试验方法和科学依据。

Objective To know petrolic content in oil in different oildom of Xinjiang,so as to provide theoritical basis for petroleum pollution of soil.Methods Ultraviolet spectrophotometry of different absorbable wavelength was taken to determine petrolic content in different contaminated soil in Karamay and Shanshan.Results The most favorable absorbable wavelength for heave oil and light oil were 254 nm and 230 nm.Standard curve was set up at these wavelength,with standard curve of heave oil of y=0.001 42＋0.100 96x,r=0.999 49,light oil of y=-0.001 34＋0.066 93x,r=0.998 09.The petrolic content in contaminated soil was 0.86 mg/g in Karamay Oilfield and 1.868 mg/g in Tuyuke Oilfield.Conclusions Standard curve is set up and determination of the petrolic content in the contaminated soil was lower in Karamay Oilfield than in Tuyuke Oilfield.It provides experimental way and scientific basis for pollution abatement of petroleum in soil.