| Toxicity measurements in aqueous solution during ozonation of mono-chlorophenols. | |
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MedLine Citation:
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PMID: 16122866 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The Microtox toxicity and Oxygen Uptake Rate (OUR) inhibition tests were conducted to monitor the variation of toxicity during ozonation of 2-chlorophenol (2-CP), 3-chlorophenol (3-CP) and 4-chlorophenol (4-CP) under neutral conditions. The results revealed that the oxidized 2-CP solution exhibited new toxicity to pure bacteria and mixed microorganisms in the early stage of ozonation. The largest inhibition of OUR appeared at one mol of applied ozone dosage per mol of initial 2-CP, and the percentage of inhibition was 63.8%. In addition, ozonated 3-CP and 4-CP also significantly induced new aqueous toxicity, if these toxic intermediates were not further ozonated. Comparing the variation of toxicity and the hydroxylated/chlorinated intermediates formed, 3-chloro-catechol, 2-chloro-2, 4-hexadienedioic acid and the dimmer compounds may be related to the sources of toxicity during the ozonation of 2-CP. |
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Authors:
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Neng-Chou Shang; Yue-Hwa Yu; Hwong-Wen Ma; Cheng-Hsin Chang; Ming-Long Liou |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2005-08-24 |
Journal Detail:
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Title: Journal of environmental management Volume: 78 ISSN: 0301-4797 ISO Abbreviation: J. Environ. Manage. Publication Date: 2006 Feb |
Date Detail:
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Created Date: 2005-12-26 Completed Date: 2006-06-29 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0401664 Medline TA: J Environ Manage Country: England |
Other Details:
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Languages: eng Pagination: 216-22 Citation Subset: IM |
Affiliation:
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Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei, Taiwan, ROC. shangnc@ntu.edu.tw |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Chlorophenols
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chemistry*,
toxicity* Oxygen / metabolism Ozone / chemistry* Photobacterium / drug effects Sewage Solutions Water Pollutants / toxicity* |
| Chemical | |
Reg. No./Substance:
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0/Chlorophenols; 0/Sewage; 0/Solutions; 0/Water Pollutants; 10028-15-6/Ozone; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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