DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kang, KH | ko |
dc.contributor.author | Dec, J | ko |
dc.contributor.author | Park, Heekyung | ko |
dc.contributor.author | Bollag, JM | ko |
dc.date.accessioned | 2009-12-07T08:31:15Z | - |
dc.date.available | 2009-12-07T08:31:15Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2004-06 | - |
dc.identifier.citation | WATER RESEARCH, v.38, pp.2737 - 2745 | - |
dc.identifier.issn | 0043-1354 | - |
dc.identifier.uri | http://hdl.handle.net/10203/14322 | - |
dc.description.abstract | Naturally occurring phenols were evaluated as mediators for the transformation of the fungicide cyprodinil by birnessite. With birnessite alone, cyprodinil transformation was negligible (0.6%). In the presence of mediators, however, it increased considerably (1.5-60.9%). With some exceptions (2,6-dimethoxyphenol, syringic acid), methoxylated phenols showed a substantial capacity for enhancing the transformation. Mass spectrometry indicated that cyprodinil cross-coupled with free radicals of phenols formed at birnessite surfaces. The extent of cyprodinil transformation in the presence of syringaldehyde, m-methoxyphenol, or vanillin increased with the amount of birnessite. In reactions with o- and p-methoxyphenol and vanillic acid, cyprodinil transformation was unaffected by the amount of birnessite, but it increased with increasing phenol concentration. The addition of various humic acids at low concentrations (5-10 mg/L) had little effect on cyprodinil transformation in the presence of o-methoxyphenol or syringaldehyde. At higher concentrations, however, humic acids inhibited the transformation (by 5-20%) when o-methoxyphenol was a mediator, but showed no effect in the presence of syringaldehyde. (C) 2004 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Effect of phenolic mediators and humic acid on cyprodinil transformation in presence of birnessite | - |
dc.type | Article | - |
dc.identifier.wosid | 000222625200013 | - |
dc.identifier.scopusid | 2-s2.0-2942683005 | - |
dc.type.rims | ART | - |
dc.citation.volume | 38 | - |
dc.citation.beginningpage | 2737 | - |
dc.citation.endingpage | 2745 | - |
dc.citation.publicationname | WATER RESEARCH | - |
dc.identifier.doi | 10.1016/j.watres.2004.03.018 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Park, Heekyung | - |
dc.contributor.nonIdAuthor | Kang, KH | - |
dc.contributor.nonIdAuthor | Dec, J | - |
dc.contributor.nonIdAuthor | Bollag, JM | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | birnessite | - |
dc.subject.keywordAuthor | cyprodinil | - |
dc.subject.keywordAuthor | phenolic compounds | - |
dc.subject.keywordAuthor | oxidative coupling | - |
dc.subject.keywordAuthor | humic acid | - |
dc.subject.keywordPlus | DILUTE AQUEOUS SUSPENSIONS | - |
dc.subject.keywordPlus | MANGANESE OXIDES | - |
dc.subject.keywordPlus | CHLORINATED PHENOLS | - |
dc.subject.keywordPlus | MN(IV) OXIDE | - |
dc.subject.keywordPlus | REDUCTIVE DISSOLUTION | - |
dc.subject.keywordPlus | NATURAL ENVIRONMENTS | - |
dc.subject.keywordPlus | COUPLING REACTIONS | - |
dc.subject.keywordPlus | ABIOTIC FORMATION | - |
dc.subject.keywordPlus | REACTION-PRODUCTS | - |
dc.subject.keywordPlus | OXIDATION | - |
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