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Respiration Studies on Soil Treated with Some Hydrocarbons¹

ABSTRACT

Respiration studies, as measured by the uptake of O₂, were made upon oil-free and oil-impregnated soils. A modified Haldane apparatus was used. Composite soil samples of oil-impregnated soil obtained around oil wells showed greater biological activity than samples of oil-free soil. The respiration rate was greater, however, in oil-free soil cores than with oil-impregnated soil cores. Crude oil, kerosene, and mineral oil were added at 2, 10, and 20% on a volume-weight basis levels to a soil. Each percentage addition resulted in its own biological activity pattern but in general the trends were similar. In all cases, the soil with added hydrocarbon had a greater respiration rate than the untreated soil.

¹ Published with the approval of the Director of the West Virginia Univ. Agr. Exp. Sta., Morgantown, as Scientific Paper No. 750. Presented before Div. S-3, Soil Sci. Soc. Am., Nov. 18–21, 1963, at Denver, Colorado.

² Graduate Assistant and Professor of Bacteriology, respectively.

Received for publication November 29, 1963. Accepted for publication February 12, 1964.