Journal
ENVIRONMENT INTERNATIONAL
Volume 28, Issue 8, Pages 779-782Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0160-4120(02)00124-1
Keywords
heavy metals; PAH; dehydrogenase assay
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Dehydrogenase enzyme activity (DHA) assay method using resazurin was accommodated for measuring of toxicity of compound contaminants on uncharacterized microbial communities present in any given soil. The method was used to compare the toxic effect of heavy metal and polycyclic aromatic hydrocarbon (PAH) contaminant mixture (Cr, Pb, Cu, Cd, Pyrene) on four typical Estonian soils covering a range of compositions. The method proved to be useable on all soils; the sensitivity of soil microbiology to toxic effect of contaminants was found to have a negative correlation with Ca and organic matter (OM) content and a positive correlation with amorphous phase content of soils. (C) 2002 Elsevier Science Ltd. All rights reserved.
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