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.
Artigo
em Inglês
| 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>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Microbiologia do Solo
/
Poluentes do Solo
/
Bactérias
/
Química
/
China
/
Monitoramento Ambiental
/
Cobre
/
Toxicidade
/
Fungos
/
Concentração de Íons de Hidrogênio
País/Região como assunto:
Ásia
Idioma:
Inglês
Revista:
Biomedical and Environmental Sciences
Ano de publicação:
2006
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS