Influences of copper speciation on toxicity to microorganisms in soils / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 409-413, 2006.
Article
in English
| WPRIM
| ID: wpr-249907
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the relationship between copper speciation and microbial features (microbial communities and copper tolerance level) in order to determine the adverse effect of different forms of Cu on microorganisms.</p><p><b>METHODS</b>Tessier's sequential extraction procedure was used to qualify the different Cu forms (exchangeable, carbonate bound, Fe/Mn oxide bound, residue and organic matter bound), and the copper tolerance level (expressed as IC50, influence concentration) was measured by the plate-count method.</p><p><b>RESULTS</b>By simple correlation analysis, the IC50 was positively correlated with the concentration of exchangeable Cu (R2 = 0.8204), while weakly correlated with other forms of Cu.</p><p><b>CONCLUSION</b>The bacterial community tolerance increases in the copper-contaminated soil while sensitive bacteria decrease in the copper-contaminated soils. The exchangeable Cu exerts high toxicity to microbial communities.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Soil Microbiology
/
Soil Pollutants
/
Bacteria
/
Chemistry
/
China
/
Environmental Monitoring
/
Copper
/
Toxicity
/
Fungi
/
Hydrogen-Ion Concentration
Country/Region as subject:
Asia
Language:
English
Journal:
Biomedical and Environmental Sciences
Year:
2006
Type:
Article
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