| Inhibition of seawater on bisphenol A (BPA) degradation by Fenton reagents. | |
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MedLine Citation:
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PMID: 14749102 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To investigate bisphenol-A (BPA) degradation in seawater using Fenton reagents, changes in the BPA recovery and in the concentration of BPA metabolite, BPA-o-quinone in the three water samples; BPA free deionizad water (control water), 3% aq. NaCl and seawater as a function of time after BPA fortification in the presence of radical oxygen species (ROS) at 20 degrees C were investigated. The BPA recoveries were lower in both 3% aq. NaCl and seawater than in the control water. The BPA recovery in aq. NaOCl decreased as a function of NaOCl concentration, indicating that BPA could be degraded by the potent radical ion (OCl-) at the concentration of above 2 microM. A BPA metabolite, BPA-o-quinone was formed in all the water samples after addition of ROS which was produced by Fenton reaction (reaction of 0.11 M H2O2 and 0.44 mM FeCl3.6H2O). These results indicated that BPA degradation could occur by an addition of ROS and further accelerated by the formation of OCl- in salt containing water samples. BPA recovery was the highest in seawater immediately after addition of Fenton reagents and the amount of BPA-o-quinone was very low, which suggests that seawater possesses an inhibitory system on BPA degradation. There was a positive correlation (p<0.01) between the fortified iron concentration and turbidity in seawater. Turbidity might be originated from iron-binding substances. Degradation threshold of BPA was observed when Fenton reaction was employed in seawater fortified with high amount of BPA. The present study suggested that iron trapping caused an inhibition on BPA degradation by Fenton reagents. |
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Authors:
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Junko Sajiki; Jun Yonekubo |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Environment international Volume: 30 ISSN: 0160-4120 ISO Abbreviation: Environ Int Publication Date: 2004 Apr |
Date Detail:
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Created Date: 2004-01-29 Completed Date: 2004-06-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7807270 Medline TA: Environ Int Country: United States |
Other Details:
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Languages: eng Pagination: 145-50 Citation Subset: IM |
Affiliation:
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Chiba Prefectural Institute of Public Health, 666-2 Nitona-cho, Chuo-ku, Chiba 260-8715, Chiba City, Japan. j.sjk@ma.pref.chiba.jp |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Estrogens, Non-Steroidal
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chemistry* Hydrogen Peroxide / chemistry* Iron / chemistry* Oxidation-Reduction Phenols / chemistry* Reactive Oxygen Species Seawater / chemistry* Water Pollutants / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Estrogens, Non-Steroidal; 0/Fenton's reagent; 0/Phenols; 0/Reactive Oxygen Species; 0/Water Pollutants; 7439-89-6/Iron; 7722-84-1/Hydrogen Peroxide; 80-05-7/bisphenol A |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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