M. Wyszkowski, A. Ziółkowska
University of Warmia and Mazury in Olsztyn, Department of Environmental Chemistry, Olsztyn, PL

EFFECT OF PETROL, DIESEL OIL AND NEUTRALIZING SUBSTANCES ON SOME PROPERTIES OF SOIL


The purpose of the present experiment has been to determine the effect of soil contamination with petrol and diesel oil (0, 2.5, 5 and 10 g kg-1 of soil) and different substances on the content of organic carbon and available forms of phosphorus, potassium and magnesium in the soil. Compost, bentonite and calcium oxide were applied in order to neutralize the anticipated negative effects of petrol and diesel oil on soil properties. The effect of petroleum-derived substances and alleviating substances on the content of the analyzed elements in soil was varied. Petrol and diesel did not have a clear impact on the content of organic carbon in the soil, following the harvest of the plants. Higher rates of petroleum-derived substances caused an increase in the content of available potassium and a decrease in the content of available magnesium in the soil. Diesel oil increased the content of available phosphorus in the soil. The influence of petrol on the content of available phosphorus in the soil was negative. Among the neutralization additives applied, bentonite had the most favourable and positive effect on the content of the examined elements (with exception organic carbon) in soil. The effect of compost and calcium oxide was generally lower than bentonite.

Keywords: petrol, diesel oil, compost, bentonite, calcium oxide, organic carbon, mineral components