Distribution of Microorganisms over the Ground Polluted with Oil Products in the Vadose and Saturation Zones
I. V. Trusey, A. Y. Ozersky, V. P. Ladygina, Y. L. Gurevich
Pages: 29-35
Abstract
The ground polluted with oil products was analyzed at a depth of 0,5-7,8 m (loamy soil), 11,5-13,0 m (gravelite), 13,0-15,0 m (siltstone). It was shown that the distribution of oil products and microorganisms in the ground over the profile depends on the hydrogeological properties of the rock (porosity, filtration coefficient). The number of aerobic heterotrophic microorganisms varied from 10-10 ufc/g, the fraction of hydrocarbon-oxidizing ones increased with depth from 30 to 85 %. The number of anaerobic microorganisms was comparable with the number of aerobic ones. The number of psychrotrophs and psychrophiles increases with depth; in the lower horizon these organisms prevail over the number of mesophiles.
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