Linked Life Data

11846283

Source:http://linkedlifedata.com/resource/pubmed/id/11846283

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2002-2-15
pubmed:abstractText
This study investigates the variation of toxicity during ozonation of 2-chlorophenol (2-CP), 3-chlorophenol (3-CP) and 4-chlorophenol (4-CP) in neutral condition. Acute toxicity of pure chlorophenols (CPs) and their ozonated intermediates was evaluated by Microtox assay. The results revealed that the intermediates of oxidized CPs induced new toxicity during the early stage of ozonation, and the ozonated 2-CP showed higher degree of toxicity increase than 3-CP and 4-CP. The maximum toxicity normally occurred before the maximum color intensity was monitored, while ozone dosage applied was within 1 mg of ozone per mg of initial CPs. This increasing toxicity was mainly contributed from ozonated intermediates. Formation of chlorocatechols, chloromuconic acids and hydroxylated/chlorinated dimeric compounds were detected in ozonation of CPs. These chlorinated by-products may cause greater toxicity than the parent chlorophenols. The required ozone dosage to detoxify the CPs solution into a complete non-toxic condition follows the order: 4-CP > 3-CP > 2-CP.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1093-4529
pubmed:author
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
261-71
pubmed:dateRevised
2009-8-14
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Variation of toxicity during the ozonation of monochlorophenolic solutions.
pubmed:affiliation
Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, ROC. shangnc@hotmail.com
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't