Effects of cadmium and simulated acid rain on ammonification and nitrification in soil

The toxicity of cadmium to nitrifying soil micro-organisms was studied in perfusion experiments, in which the initial soil pH had been adjusted to between 2 and 3. Glycine or ammonium sulphate were used as the substrates. The nitrification of both these was inhibited in soils with initial pH values...

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Bibliographic Details
Published inArchives of environmental contamination and toxicology Vol. 12; no. 3; pp. 285 - 291
Main Authors Bewley, Richard J. F., Stotzky, G.
Format Journal Article
LanguageEnglish
Published 01.01.1983
Subjects
ammonia
pollution
soil biology
waste management
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Summary:The toxicity of cadmium to nitrifying soil micro-organisms was studied in perfusion experiments, in which the initial soil pH had been adjusted to between 2 and 3. Glycine or ammonium sulphate were used as the substrates. The nitrification of both these was inhibited in soils with initial pH values of 2.5 or 2.0, respectively, and never recovered. Ammonification was not affected, though. In less acidified soils , the inhibitory effects of cadmium and of sulphuric acid acidity were cumulative. The authors conclude that shock acidification of soils by acid rain will be more damaging than cadmium pollution.
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ISSN:0090-4341
1432-0703
DOI:10.1007/BF01059404