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Chemical and microbiological changes in soil following exposure to heavy atmospheric pollution
AbstractSoils exposed to atmospheric pollution from a coking works were more acidic and contained higher concentrations of S-oxides and higher numbers of S-oxidising micro-organisms than did similar, but unpolluted, soils. Transfer of unpolluted soil to the polluted site resulted in an increase in S-oxidising micro-organisms and S-oxides in these soils, and to decreases in soil pH and the number of heterotrophic bacteria. Transfer of polluted soil to the unpolluted site did not, however, result in a marked increase in soil pH, or in a change to more normal concentrations of S-oxides and numbers of S-oxidising micro-organisms. The fact that the concentration of S-oxides in the polluted soil did not fall when removed from exposure to the effluent indicates that internal microbial oxidation accounts to some extent for the higher concentration of S-oxides and lower pH found in polluted soil. The results suggest that without treatment, the brown earth soils studied here would not rapidly recover once the source of the pollution had been removed, either by effluent clean-up or plant closure.
Chemical and microbiological changes in soil following exposure to heavy atmospheric pollution
AbstractSoils exposed to atmospheric pollution from a coking works were more acidic and contained higher concentrations of S-oxides and higher numbers of S-oxidising micro-organisms than did similar, but unpolluted, soils. Transfer of unpolluted soil to the polluted site resulted in an increase in S-oxidising micro-organisms and S-oxides in these soils, and to decreases in soil pH and the number of heterotrophic bacteria. Transfer of polluted soil to the unpolluted site did not, however, result in a marked increase in soil pH, or in a change to more normal concentrations of S-oxides and numbers of S-oxidising micro-organisms. The fact that the concentration of S-oxides in the polluted soil did not fall when removed from exposure to the effluent indicates that internal microbial oxidation accounts to some extent for the higher concentration of S-oxides and lower pH found in polluted soil. The results suggest that without treatment, the brown earth soils studied here would not rapidly recover once the source of the pollution had been removed, either by effluent clean-up or plant closure.
Chemical and microbiological changes in soil following exposure to heavy atmospheric pollution
Killham, K. (author) / Wainwright, M. (author)
Environmental Pollution Series A: Ecological and Biological ; 33 ; 121-131
1984-01-01
11 pages
Article (Journal)
Electronic Resource
English
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