Im. Gabbasova et al., CHANGES IN SOIL PROPERTIES AND GROUNDWATER COMPOSITION UNDER THE IMPACT OF POLLUTION BY OIL AND SEWAGE WATERS FROM THE OIL-FIELDS OF BASHKORTOSTAN, Eurasian soil science, 30(11), 1997, pp. 1219-1229
The effect of contamination by oil products and sewage waters from oil
wells on soil properties was studied. Humus status, acid-alkaline equ
ilibrium, content of available forms of nitrogen and phosphorous, enzy
me activity, and chemical composition of water extracts from soils wer
e examined. The samples were collected on the territory of major oil f
ields in Bashkortostan.