Linked Life Data

16343589

Source:http://linkedlifedata.com/resource/pubmed/id/16343589

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2006-1-2
pubmed:abstractText
The toxicity of three heavy metals (copper, zinc and nickel) on an activated sludge biomass was studied by measuring several parameters of microbiological activity and the dynamics of microbial community composition. The effects on the microflora in the activated-sludge tank were evaluated by dosing the tank with different metal concentrations and a non-inhibiting concentration of copper for a 2-week period. The relationship between biological effects and chemical measurements was elucidated by principal component analysis (PCA). The biochemical data suggested a higher sensitivity of nitrifiers to these metals than heterotrophs. This was confirmed by fluorescent in situ hybridization (FISH) analysis on the microbial community. The impact of copper was displayed by biomass deflocculating phenomena (pin-point) and a decrease in the beta-proteo bacteria component. In addition, the zone settling velocity (ZSV) was shown not to be a good indicator of chronic toxicity phenomena. Finally, the sequence of biomass metal accumulation capability was assessed, and corresponds to Cu>Ni>Zn.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0043-1354
pubmed:author
pubmed:issnType
Print
pubmed:volume
40
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
99-106
pubmed:dateRevised
2006-4-19
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Metal toxicity in municipal wastewater activated sludge investigated by multivariate analysis and in situ hybridization.
pubmed:affiliation
Department of Food Science Technology and Microbiology (DISTAM), University of Milan, Agricultural Faculty, Via Celoria 2, 20133 Milan, Italy. pamela.principi@unimi.it
pubmed:publicationType
Journal Article