Linked Life Data

17509647

Source:http://linkedlifedata.com/resource/pubmed/id/17509647

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2007-6-15
pubmed:abstractText
Polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and dioxin-like polychlorinated biphenyls (PCBs) in char and slag produced from automobile shredder residue by pyrolysis and melting process were analyzed to measure changes in the characteristics and distribution of their congeners caused by thermal treatment. In particular, a large quantity of dioxin-like PCBs occurred in low-chlorinated congeners. The concentration of PCDDs/PCDFs in char was 0.542 microg/kg, with mostly PCDFs dominant and its toxicity equivalent concentration (TEQ) was about 70ngTEQ/kg. The concentration and toxicity equivalent concentration of dioxin-like PCBs in char were 0.869 microg/kg and 1.60ngTEQ/kg, respectively. Melted char slag was produced using various cooling methods: water quenching, air cooling, and slow cooling. The concentrations of PCDDs/PCDFs in slag produced by the methods were 1.51, 1.38, and 2.43ngTEQ/kg, respectively; those of dioxin-like PCBs were close to 0.01ngTEQ/kg. The congener distributions varied only slightly among the cooling methods. Applying melting procedure to char reduced PCDD/PCDF concentration by 95.3%, and the corresponding TEQ concentration was reduced by 97.9%. We thus conclude that melting process is an efficient way to reduce the concentrations of PCDDs/PCDFs in solids produced by pyrolysis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0045-6535
pubmed:author
pubmed:issnType
Print
pubmed:volume
68
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1636-41
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Distribution of dioxins, furans, and dioxin-like PCBs in solid products generated by pyrolysis and melting of automobile shredder residues.
pubmed:affiliation
Department of Environmental Engineering, YIEST, Yonsei University, 234 Heungup, Wonju, South Korea.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't